About Bipolar Transistors - BJT

Bipolar Transistors - BJT

Bipolar junction transistors (BJTs) are a type of transistor used in electronics and signal processing circuits. They are composed of two pn-junctions in a three-terminal device. In the most common configuration, the BJT acts as an amplifier and can be used to amplify both voltage and current. BJTs can also be used in a switching configuration, where they are used to control the flow of current in a circuit. BJTs are versatile and can be used in a wide range of applications, from computers and consumer electronics to industrial and medical control systems.

Bipolar Transistors - BJT

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Image	Stock Code(▲▼)	Description	Manufacturer	Availability ⓘ (▲▼)	Price(AUD) (Ex. GST)(▲▼)	Enter Qty	Technology	Mounting Style	Package / Case	Transistor Polarity	Configuration	Maximum DC Collector Current	Collector- Emitter Voltage VCEO Max	Collector- Base Voltage VCBO	Emitter- Base Voltage VEBO	Collector-Emitter Saturation Voltage	Pd - Power Dissipation	Gain Bandwidth Product fT	Minimum Operating Temperature	Maximum Operating Temperature	Qualification	Series	Packaging

MMBTA42-TP

Bipolar (BJT) Transistor NPN 300 V 500 mA 50MHz 225 mW Surface Mount SOT-23
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Micro Commercial Components (MCC)

17460
Ships to you
between Tue. 29 Sep to Mon. 05 Oct

October 2026

October 2026
	S	M	T	W	T	F	S
40	27	28	29	30	1	2	3
41	4	5	6	7	8	9	10
42	11	12	13	14	15	16	17
43	18	19	20	21	22	23	24
44	25	26	27	28	29	30	31
45	1	2	3	4	5	6	7

AUD 0.0186

Multiples of: 3000

Smd/Smt

SOT - 23

Npn

Single

0.3 A

300 V

6 V

300 mW

50 Mhz

- 55 C

+ 150 C

Mmbta42

Reel

BC857BLT1G

Bipolar Transistors - BJT 100mA 50V PNP
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

ON Semiconductor

17460
Ships to you
between Tue. 29 Sep to Mon. 05 Oct

October 2026

October 2026
	S	M	T	W	T	F	S
40	27	28	29	30	1	2	3
41	4	5	6	7	8	9	10
42	11	12	13	14	15	16	17
43	18	19	20	21	22	23	24
44	25	26	27	28	29	30	31
45	1	2	3	4	5	6	7

AUD 0.0277

Multiples of: 3000

Smd/Smt

SOT - 23 - 3

Pnp

Single

0.1 A

- 45 V

- 50 V

5 V

- 0.65 V

225 mW

100 Mhz

- 55 C

+ 150 C

Bc857bl

Cut Tape

PMBTA06,215

Bipolar (BJT) Transistor NPN 80 V 500 mA 100MHz 250 mW Surface Mount TO-236AB
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Nexperia

17460
Ships to you
between Tue. 29 Sep to Mon. 05 Oct

October 2026

October 2026
	S	M	T	W	T	F	S
40	27	28	29	30	1	2	3
41	4	5	6	7	8	9	10
42	11	12	13	14	15	16	17
43	18	19	20	21	22	23	24
44	25	26	27	28	29	30	31
45	1	2	3	4	5	6	7

AUD 0.0449

Multiples of: 3000

Smd/Smt

SOT - 23

Npn

Single

0.5 A

80 V

4 V

100 Mhz

- 65 C

+ 150 C

Reel

BC857BTT1G

Transistors Bipolar - BJT 100mA 50V PNP
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

ON Semiconductor

17460
Ships to you
between Tue. 29 Sep to Mon. 05 Oct

October 2026

October 2026
	S	M	T	W	T	F	S
40	27	28	29	30	1	2	3
41	4	5	6	7	8	9	10
42	11	12	13	14	15	16	17
43	18	19	20	21	22	23	24
44	25	26	27	28	29	30	31
45	1	2	3	4	5	6	7

AUD 0.0488

Multiples of: 3000

Smd/Smt

SC - 75 - 3

Pnp

Single

0.1 A

- 45 V

- 50 V

5 V

- 0.65 V

100 Mhz

- 55 C

+ 150 C

Bc857bt

Reel

BCX70G

Transistors Bipolar - BJT SOT-23 NPN GP AMP
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

ON Semiconductor

17460
Ships to you
between Tue. 29 Sep to Mon. 05 Oct

October 2026

October 2026
	S	M	T	W	T	F	S
40	27	28	29	30	1	2	3
41	4	5	6	7	8	9	10
42	11	12	13	14	15	16	17
43	18	19	20	21	22	23	24
44	25	26	27	28	29	30	31
45	1	2	3	4	5	6	7

AUD 0.055

Multiples of: 1

Smd/Smt

SOT - 23

Npn

Single

0.1 A

45 V

5 V

0.55 V

350 mW

250 Mhz

- 65 C

+ 150 C

Bcx70g

Reel

BC548CTA

Transistors Bipolar - BJT NPN 30V 100mA HFE/8
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

ON Semiconductor

17460
Ships to you
between Tue. 29 Sep to Mon. 05 Oct

October 2026

October 2026
	S	M	T	W	T	F	S
40	27	28	29	30	1	2	3
41	4	5	6	7	8	9	10
42	11	12	13	14	15	16	17
43	18	19	20	21	22	23	24
44	25	26	27	28	29	30	31
45	1	2	3	4	5	6	7

AUD 0.0559

Multiples of: 18000

Through Hole

TO - 92 - 3 K in KED LEAD

Npn

Single

0.1 A

30 V

5 V

200 mV

300 Mhz

- 65 C

+ 150 C

Bc548

Ammo Pack

2PD601ART,235

Transistors Bipolar - BJT NPN TRANSISTOR
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Nexperia

17460
Ships to you
between Tue. 29 Sep to Mon. 05 Oct

October 2026

October 2026
	S	M	T	W	T	F	S
40	27	28	29	30	1	2	3
41	4	5	6	7	8	9	10
42	11	12	13	14	15	16	17
43	18	19	20	21	22	23	24
44	25	26	27	28	29	30	31
45	1	2	3	4	5	6	7

AUD 0.0561

Multiples of: 1

Smd/Smt

TO - 236AB

Npn

Single

0.1 A

50 V

60 V

6 V

250 mW

100 Mhz

- 65 C

+ 150 C

Reel

MMBT3906Q-7-F

Bipolar Transistors - BJT General Purpose Transistor SOT23 T&R 3K
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

Diodes Incorporated

17460
Ships to you
between Tue. 29 Sep to Mon. 05 Oct

October 2026

October 2026
	S	M	T	W	T	F	S
40	27	28	29	30	1	2	3
41	4	5	6	7	8	9	10
42	11	12	13	14	15	16	17
43	18	19	20	21	22	23	24
44	25	26	27	28	29	30	31
45	1	2	3	4	5	6	7

AUD 0.057

Multiples of: 3000

2N5551TF

Transistors Bipolar - BJT NPN Transistor General Purpose
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

ON Semiconductor

17460
Ships to you
between Tue. 29 Sep to Mon. 05 Oct

October 2026

October 2026
	S	M	T	W	T	F	S
40	27	28	29	30	1	2	3
41	4	5	6	7	8	9	10
42	11	12	13	14	15	16	17
43	18	19	20	21	22	23	24
44	25	26	27	28	29	30	31
45	1	2	3	4	5	6	7

AUD 0.0598

Multiples of: 18000

Through Hole

TO - 92 - 3 K in KED LEAD

Npn

Single

0.6 A

160 V

180 V

6 V

0.2 V

300 Mhz

- 55 C

+ 150 C

2N5551

Reel

2N3904TA

Bipolar Transistors - BJT NPN Transistor General Purpose
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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.

ON Semiconductor

1736
Ships to you
between Tue. 29 Sep to Mon. 05 Oct

October 2026