Npn High
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200, NPN MJ16022 High Power Transistor TO-3 MOTOROLA $416.00 |
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200pcs, MJ16022 NPN High Power Transistor TO-3 Motorola $415.00 |
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200x BU508A High Voltage Current NPN Transistor NEW m $367.00 |
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200pcs, NPN MJ16020 High Power Transistor TO-3 MOTOROLA $365.00 |
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200pcs, MJ16020 NPN High Power Transistor TO-3 Motorola $360.00 |
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200, NPN 2SC1307 Transistors for High Power Output AMPS $216.00 |
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100,High Voltage Current NPN Transistor BU508A BU508 m $212.00 |
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100,High Voltage Current NPN Transistor BU508A BU508 m $212.00 |
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100pcs, BU508A High Voltage Current NPN Transistor $211.00 |
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MRF492 Motorola NPN High Power Transistor - 70 Watts $120.00 |
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50pcs, NPN MJ16022 High Power Transistor TO-3 MOTOROLA $112.00 |
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50pcs, MOT NPN MJ14002 High-current Transistor TO-3 $110.00 |
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50x BU508A High Voltage Current NPN Transistor NEW m $110.00 |
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50pcs, BU508A High Voltage Current NPN Transistor $109.00 |
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50pcs, MJ16022 NPN High Power Transistors TO-3 Motorola $109.00 |
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BUX98AP HIGH VOLTAGE NPN POWER TRANSISTOR LOT OF 10 $99.00 |
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50pcs, MJ16020 NPN High Power Transistor TO-3 Motorola $95.00 |
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50,2N5239 NPN High Voltage Power Transistor TO-3 MOT $90.00 |
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50pcs,MJ15001 NPN High Power Audio AMP Transistor TO-3 $89.00 |
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BUV61 high power NPN BY SGS LOT OF 10 $89.00 |
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2SC3306 NPN for switching regulator and high voltage LOT OF 50 $87.00 |
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SOT−223 PACKAGE HIGH CURRENT NPN SILICON TRANSISTOR SURFACE MOUNT SPZT651T1G $75.00 |
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20 pcs MRF571 RF NPN High Freq Transistor Mototola $58.00 |
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BUX10 HIGH POWER NPN SILICON BY SGS LOT OF 5 $42.00 |
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2N918 JAN MIL-SPEC NPN high frequency LOT OF 10 $39.95 |
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BUV48 HIGH POWER NPN SILICON TR LOT OF 10 $39.95 |
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NPN HIGH POWER SILICON TRANSISTOR 2N3585, TO-66 QUANTITY-5 $39.00 |
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(100) Philips BU1706AB High Voltage 850V 5A NPN Switching Power Transistor SMD $36.99 |
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2SC3306 NPN for switching regulator and high voltage LOT OF 20 $33.00 |
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Sale 1000 X MPSA42 NPN High Voltage Transistor 0.5A 300V New Free Shipping $32.68 |
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1000pcs(1Kpcs) MPSA42 NPN High Voltage Transistor 500mA 300V TO-92 $32.50 |
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New 1000pcs X MPSA42 NPN High Voltage 0.5A 300V TO-92 Transistor Free Shipping $32.00 |
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Free Shipping New 1000 pcs X MPSA42 NPN High Voltage 0.5A 300V Transistor $31.99 |
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1000pcs(1Kpcs) MPSA42 NPN High Voltage Transistor 500mA 300V TO-92 $30.50 |
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2N6308, 8A 350V, High Voltage NPN Power Transistor (4) $29.99 |
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100p MMBTA42C / MMBTA42 NPN high-Voltage transistor NEW (A277) $29.99 |
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50, NPN 2SC1307 Transistors for High Power Output AMPS $29.90 |
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Free Shipping New 500 pcs X MPSA42 NPN High Voltage 0.5A 300V Transistor $29.50 |
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2N3997 JANTX MIL-SPEC 100 V, 5 A high speed NPN $29.00 |
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15pcs Brand New 2N3773 3773 16A 140V High Power NPN Transistor TO-3 ST $28.99 |
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2SD1213 NPN 30V/12A High-Speed Swi BY SANYO LOT OF 10 $28.95 |
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2SC4664 High-speed switching NPN LOT OF 20 $28.95 |
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10pcs, NPN MJ16022 High Power Transistor TO-3 MOTOROLA $27.00 |
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10PCS, MOT NPN MJ14002 High-current Transistor TO-3 $26.99 |
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10pcs, MJ16022 NPN High Power Transistor TO-3 Motorola $25.99 |
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New 500pcs X MPSA42 NPN High Voltage 0.5A 300V TO-92 Transistor Free Shipping $25.99 |
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2SC4834 High-speed switching bipolar NPN LOT OF 20 $24.95 |
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2N5682, 120V 1A NPN Bipolar High Power Transistor Qty 4 $22.49 |
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MPSA42, High Voltage Transistor, 300V, NPN, Qty 200 $20.69 |
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50p MMBTA42C / MMBTA42 NPN high-Voltage transistor NEW (A277) $19.99 |
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Mil-Spec JANTX2N3866A NPN Si High Frequency Transistor $19.99 |
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10pcs,MJ15001 NPN High Power Audio AMP Transistor TO-3 $19.99 |
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10pcs, NPN MJ16020 High Power Transistor TO-3 MOTOROLA $19.99 |
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Qty 4: Vintage 2N5828 NPN High Gain “FuzZ” Transistors StompBox Pedal Xlnt! NOS $19.95 |
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RCA CA3093E: High Current NPN Transistor, Zener-Diode, Diode Array: Very Rare $19.95 |
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(10) TT2062-0J4 HIGH VOLTAGE TRANSISTORs, NPN, 1500V,35A (Pulsed),85W,TOSHIBA $19.95 |
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BU407 BY ST HIGH CURRENT NPN SILICON TRANSISTOR LOT OF 20 $19.95 |
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2 HIGH-POWER 2N6282 TRANSISTORS,RCA,TO3 NPN COMPLEMENTARY DARLINGTON TRANSISTORS $19.95 |
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10pcs, MJ16020 NPN High Power Transistor TO-3 Motorola $19.90 |
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10 x 2N3773 16A 140V Audio High Power NPN Transistor TO-3 New Free Shipping $19.49 |
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BUV48 HIGH POWER NPN SILICON TR LOT OF 5 $19.00 |
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2SC3788 D NPN high-definition CTR LOT OF 20 $19.00 |
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100 PCS 2SC5706 TO-252 C5706 High Current Switching Applications TRANSISTORS NPN $18.98 |
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100 PCS 2SC5706 TO-251 C5706 High Current Switching Applications TRANSISTORS NPN $18.98 |
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MRF581 NPN Silicon High-Frequency Transistor LOT of 5 $18.95 |
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5 Pcs MJ15001 + 5 Pcs MJ15002 NPN High Power Audio TO-3 $18.50 |
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10 Pcs, MJ15001 NPN High Power Audio MOT TO-3 $18.50 |
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10,High Voltage Current NPN Transistor BU508A BU508 m $18.20 |
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10x BU508A High Voltage Current NPN Transistor NEW m $18.20 |
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10pcs, BU508A High Voltage Current NPN Transistor $17.99 |
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12 NOS 70s NPN High-Speed Switch Transistors~Gold Leads $17.95 |
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10 pcs New 2N3773 16A 140V High Power NPN Transistor TO-3 ST $17.65 |
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2N6517, 500mA 350V, NPN, High Voltage Transistor (200) $16.19 |
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10 pcs 2N3773 16A 140V Audio High Power NPN Transistor MOT/ST TO-3 New $15.99 |
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20x 2N2222A 2N2222 TO-18 NPN transistor 40V 0.8A High $15.99 |
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20 x TIP35C TIP35 SILICON HIGH POWER NPN TRANSISTOR $15.99 |
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(10) C5387 / 2SC5387 HIGH-VOLTAGE TRANSISTORs,NPN, 1500V,20A (pulsed),10A DC,50W $15.95 |
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2SC5200 High Power Audio Amp transistor NPN 250V 17A x8 $15.90 |
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8pcs 2N3773 16A 140V High Power NPN Transistor TO-3 ST Brand New $15.50 |
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TIP47 TIP 47 NPN HIGH VOLTAGE POWER TRANSISTOR (Qty 10) $14.99 |
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NE02137 NPN SILICON HIGH FREQUENCY TRANSISTOR 4.5GHz $14.99 |
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MOTOROLA 2N3440 NPN HIGH VOLTAGE TRANSISTORS QTY 10 *** NEW *** $14.99 |
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(1) 2N5328 TRANSISTOR NPN TO-59 HIGH POWER, VOLTAGE, FREQ. NEW/NOS $14.95 |
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2SC2930 NPN High Voltage Silicon High Power Transistor $14.95 |
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NEW MJ16022 NPN HIGH POWER TRANSISTOR TO-3 $14.50 |
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BC639 NPN Audio and GP High Output Amp TO-92 100 pc $13.99 |
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5PCS,NPN MJ16020 High Power Transistor TO-3 MOTOROLA $13.99 |
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5pcs, NPN MJ16020 High Power Transistor TO-3 MOTOROLA $13.99 |
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5pcs, MJ16020 NPN High Power Transistor TO-3 Motorola $13.88 |
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ST BSX20 NPN TRANSISTOR TO-18 HIGH SPEED RF fT=500MHZ $13.80 |
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5, NPN MJ16022 High Power Transistor TO-3 MOTOROLA $12.99 |
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2N5886 COMPLEMENTARY HIGH POWER NPN TRANSISTORS TO-3 ***NEW*** ( Qty 3 ) $12.99 |
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2 RCA 2N5239 NPN Si HIGH VOLTAGE HIGH POWER TRANSISTORS $12.99 |
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10, NPN 2SC1307 Transistors for High Power Output AMPS $12.90 |
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NTE NTE283 T-NPN, Si, High Vltg, High Current Sw, Horiz $12.75 |
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5pcs, MJ16022 NPN High Power Transistors TO-3 Motorola $12.68 |
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NTE NTE190 T-NPN. SI, High Voltage Amp. for Horz. Drive & Linear Applications $12.60 |
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MPSA42, High Voltage Transistor, 300V, NPN, Qty 100 $12.59 |
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LT1839 / Motorola NPN Silicon High Frequency Transistor $12.25 |
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4 Pieces Motorola 2N5038 High Current NPN Transistors $12.00 |
More Npn High related items:
negative current output while logic HIGH in IC's?
I've been reading the datasheets for some cmos IC's, particularly 4017 and 4022... I'm wondering, why is it that their current output is negative at logic high, and is small positive when in logic LOW. I see schematics in the net using the 4022 as a led chaser by connecting the base of an npn transistor to the IC's output, but doesn't an npn transistor need positive current at the base to properly bias it?
The convention is used is that a current flowing into a device is positive, and flowing out is negative be it input or output.
If you consider a 5k connected to a 5V, the current is 1mA, flosing into the resistor. As far as the resistor is concerned this current is positive, But for the 5V it is considered negative. Th current flowing into an npn transistor base is positive. The current provided by an IC for this is negative as far as IC is concerned.
Look up TTL internal circuit and you will find that a source of Low level will have to sink a current of 1.6mA from the device it drives. In this case, the source has 1.6mA while TTL input is -1.6mA. This is because the current is flowing out of the TTL device.
SImilarly if a TTL device is driving an LED connected through a resistor to 5V rail, the current will flow into the TTL driver and is considered positive.
If you can live with a disgusting analogy:
If you vomit, it is negative. If you eat, it is positive.
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200, NPN MJ16022 High Power Transistor TO-3 MOTOROLA $416.00 |
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200pcs, MJ16022 NPN High Power Transistor TO-3 Motorola $415.00 |
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200x BU508A High Voltage Current NPN Transistor NEW m $367.00 |
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200pcs, NPN MJ16020 High Power Transistor TO-3 MOTOROLA $365.00 |
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200pcs, MJ16020 NPN High Power Transistor TO-3 Motorola $360.00 |
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200, NPN 2SC1307 Transistors for High Power Output AMPS $216.00 |
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100,High Voltage Current NPN Transistor BU508A BU508 m $212.00 |
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100,High Voltage Current NPN Transistor BU508A BU508 m $212.00 |
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100pcs, BU508A High Voltage Current NPN Transistor $211.00 |
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MRF492 Motorola NPN High Power Transistor - 70 Watts $120.00 |
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50pcs, NPN MJ16022 High Power Transistor TO-3 MOTOROLA $112.00 |
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50pcs, MOT NPN MJ14002 High-current Transistor TO-3 $110.00 |
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50x BU508A High Voltage Current NPN Transistor NEW m $110.00 |
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50pcs, BU508A High Voltage Current NPN Transistor $109.00 |
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50pcs, MJ16022 NPN High Power Transistors TO-3 Motorola $109.00 |
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BUX98AP HIGH VOLTAGE NPN POWER TRANSISTOR LOT OF 10 $99.00 |
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50pcs, MJ16020 NPN High Power Transistor TO-3 Motorola $95.00 |
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50,2N5239 NPN High Voltage Power Transistor TO-3 MOT $90.00 |
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50pcs,MJ15001 NPN High Power Audio AMP Transistor TO-3 $89.00 |
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BUV61 high power NPN BY SGS LOT OF 10 $89.00 |
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2SC3306 NPN for switching regulator and high voltage LOT OF 50 $87.00 |
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SOT−223 PACKAGE HIGH CURRENT NPN SILICON TRANSISTOR SURFACE MOUNT SPZT651T1G $75.00 |
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20 pcs MRF571 RF NPN High Freq Transistor Mototola $58.00 |
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BUX10 HIGH POWER NPN SILICON BY SGS LOT OF 5 $42.00 |
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2N918 JAN MIL-SPEC NPN high frequency LOT OF 10 $39.95 |
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BUV48 HIGH POWER NPN SILICON TR LOT OF 10 $39.95 |
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NPN HIGH POWER SILICON TRANSISTOR 2N3585, TO-66 QUANTITY-5 $39.00 |
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(100) Philips BU1706AB High Voltage 850V 5A NPN Switching Power Transistor SMD $36.99 |
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2SC3306 NPN for switching regulator and high voltage LOT OF 20 $33.00 |
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Sale 1000 X MPSA42 NPN High Voltage Transistor 0.5A 300V New Free Shipping $32.68 |
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1000pcs(1Kpcs) MPSA42 NPN High Voltage Transistor 500mA 300V TO-92 $32.50 |
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New 1000pcs X MPSA42 NPN High Voltage 0.5A 300V TO-92 Transistor Free Shipping $32.00 |
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Free Shipping New 1000 pcs X MPSA42 NPN High Voltage 0.5A 300V Transistor $31.99 |
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1000pcs(1Kpcs) MPSA42 NPN High Voltage Transistor 500mA 300V TO-92 $30.50 |
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2N6308, 8A 350V, High Voltage NPN Power Transistor (4) $29.99 |
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100p MMBTA42C / MMBTA42 NPN high-Voltage transistor NEW (A277) $29.99 |
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50, NPN 2SC1307 Transistors for High Power Output AMPS $29.90 |
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Free Shipping New 500 pcs X MPSA42 NPN High Voltage 0.5A 300V Transistor $29.50 |
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2N3997 JANTX MIL-SPEC 100 V, 5 A high speed NPN $29.00 |
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15pcs Brand New 2N3773 3773 16A 140V High Power NPN Transistor TO-3 ST $28.99 |
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2SD1213 NPN 30V/12A High-Speed Swi BY SANYO LOT OF 10 $28.95 |
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2SC4664 High-speed switching NPN LOT OF 20 $28.95 |
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10pcs, NPN MJ16022 High Power Transistor TO-3 MOTOROLA $27.00 |
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10PCS, MOT NPN MJ14002 High-current Transistor TO-3 $26.99 |
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10pcs, MJ16022 NPN High Power Transistor TO-3 Motorola $25.99 |
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New 500pcs X MPSA42 NPN High Voltage 0.5A 300V TO-92 Transistor Free Shipping $25.99 |
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2SC4834 High-speed switching bipolar NPN LOT OF 20 $24.95 |
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2N5682, 120V 1A NPN Bipolar High Power Transistor Qty 4 $22.49 |
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MPSA42, High Voltage Transistor, 300V, NPN, Qty 200 $20.69 |
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50p MMBTA42C / MMBTA42 NPN high-Voltage transistor NEW (A277) $19.99 |
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Mil-Spec JANTX2N3866A NPN Si High Frequency Transistor $19.99 |
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10pcs,MJ15001 NPN High Power Audio AMP Transistor TO-3 $19.99 |
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10pcs, NPN MJ16020 High Power Transistor TO-3 MOTOROLA $19.99 |
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Qty 4: Vintage 2N5828 NPN High Gain “FuzZ” Transistors StompBox Pedal Xlnt! NOS $19.95 |
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RCA CA3093E: High Current NPN Transistor, Zener-Diode, Diode Array: Very Rare $19.95 |
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(10) TT2062-0J4 HIGH VOLTAGE TRANSISTORs, NPN, 1500V,35A (Pulsed),85W,TOSHIBA $19.95 |
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BU407 BY ST HIGH CURRENT NPN SILICON TRANSISTOR LOT OF 20 $19.95 |
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2 HIGH-POWER 2N6282 TRANSISTORS,RCA,TO3 NPN COMPLEMENTARY DARLINGTON TRANSISTORS $19.95 |
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10pcs, MJ16020 NPN High Power Transistor TO-3 Motorola $19.90 |
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10 x 2N3773 16A 140V Audio High Power NPN Transistor TO-3 New Free Shipping $19.49 |
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BUV48 HIGH POWER NPN SILICON TR LOT OF 5 $19.00 |
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2SC3788 D NPN high-definition CTR LOT OF 20 $19.00 |
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100 PCS 2SC5706 TO-252 C5706 High Current Switching Applications TRANSISTORS NPN $18.98 |
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100 PCS 2SC5706 TO-251 C5706 High Current Switching Applications TRANSISTORS NPN $18.98 |
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MRF581 NPN Silicon High-Frequency Transistor LOT of 5 $18.95 |
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5 Pcs MJ15001 + 5 Pcs MJ15002 NPN High Power Audio TO-3 $18.50 |
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10 Pcs, MJ15001 NPN High Power Audio MOT TO-3 $18.50 |
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10,High Voltage Current NPN Transistor BU508A BU508 m $18.20 |
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10x BU508A High Voltage Current NPN Transistor NEW m $18.20 |
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10pcs, BU508A High Voltage Current NPN Transistor $17.99 |
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12 NOS 70s NPN High-Speed Switch Transistors~Gold Leads $17.95 |
|
|
10 pcs New 2N3773 16A 140V High Power NPN Transistor TO-3 ST $17.65 |
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|
2N6517, 500mA 350V, NPN, High Voltage Transistor (200) $16.19 |
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10 pcs 2N3773 16A 140V Audio High Power NPN Transistor MOT/ST TO-3 New $15.99 |
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20x 2N2222A 2N2222 TO-18 NPN transistor 40V 0.8A High $15.99 |
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20 x TIP35C TIP35 SILICON HIGH POWER NPN TRANSISTOR $15.99 |
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(10) C5387 / 2SC5387 HIGH-VOLTAGE TRANSISTORs,NPN, 1500V,20A (pulsed),10A DC,50W $15.95 |
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2SC5200 High Power Audio Amp transistor NPN 250V 17A x8 $15.90 |
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|
8pcs 2N3773 16A 140V High Power NPN Transistor TO-3 ST Brand New $15.50 |
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TIP47 TIP 47 NPN HIGH VOLTAGE POWER TRANSISTOR (Qty 10) $14.99 |
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NE02137 NPN SILICON HIGH FREQUENCY TRANSISTOR 4.5GHz $14.99 |
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|
MOTOROLA 2N3440 NPN HIGH VOLTAGE TRANSISTORS QTY 10 *** NEW *** $14.99 |
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|
(1) 2N5328 TRANSISTOR NPN TO-59 HIGH POWER, VOLTAGE, FREQ. NEW/NOS $14.95 |
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2SC2930 NPN High Voltage Silicon High Power Transistor $14.95 |
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|
NEW MJ16022 NPN HIGH POWER TRANSISTOR TO-3 $14.50 |
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|
BC639 NPN Audio and GP High Output Amp TO-92 100 pc $13.99 |
|
|
5PCS,NPN MJ16020 High Power Transistor TO-3 MOTOROLA $13.99 |
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5pcs, NPN MJ16020 High Power Transistor TO-3 MOTOROLA $13.99 |
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|
5pcs, MJ16020 NPN High Power Transistor TO-3 Motorola $13.88 |
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|
ST BSX20 NPN TRANSISTOR TO-18 HIGH SPEED RF fT=500MHZ $13.80 |
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5, NPN MJ16022 High Power Transistor TO-3 MOTOROLA $12.99 |
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|
2N5886 COMPLEMENTARY HIGH POWER NPN TRANSISTORS TO-3 ***NEW*** ( Qty 3 ) $12.99 |
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|
2 RCA 2N5239 NPN Si HIGH VOLTAGE HIGH POWER TRANSISTORS $12.99 |
|
|
10, NPN 2SC1307 Transistors for High Power Output AMPS $12.90 |
|
|
NTE NTE283 T-NPN, Si, High Vltg, High Current Sw, Horiz $12.75 |
|
|
5pcs, MJ16022 NPN High Power Transistors TO-3 Motorola $12.68 |
|
|
NTE NTE190 T-NPN. SI, High Voltage Amp. for Horz. Drive & Linear Applications $12.60 |
|
|
MPSA42, High Voltage Transistor, 300V, NPN, Qty 100 $12.59 |
|
|
LT1839 / Motorola NPN Silicon High Frequency Transistor $12.25 |
|
|
4 Pieces Motorola 2N5038 High Current NPN Transistors $12.00 |
More Npn High related items:
negative current output while logic HIGH in IC's?
I've been reading the datasheets for some cmos IC's, particularly 4017 and 4022... I'm wondering, why is it that their current output is negative at logic high, and is small positive when in logic LOW. I see schematics in the net using the 4022 as a led chaser by connecting the base of an npn transistor to the IC's output, but doesn't an npn transistor need positive current at the base to properly bias it?
The convention is used is that a current flowing into a device is positive, and flowing out is negative be it input or output.
If you consider a 5k connected to a 5V, the current is 1mA, flosing into the resistor. As far as the resistor is concerned this current is positive, But for the 5V it is considered negative. Th current flowing into an npn transistor base is positive. The current provided by an IC for this is negative as far as IC is concerned.
Look up TTL internal circuit and you will find that a source of Low level will have to sink a current of 1.6mA from the device it drives. In this case, the source has 1.6mA while TTL input is -1.6mA. This is because the current is flowing out of the TTL device.
SImilarly if a TTL device is driving an LED connected through a resistor to 5V rail, the current will flow into the TTL driver and is considered positive.
If you can live with a disgusting analogy:
If you vomit, it is negative. If you eat, it is positive.
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