About Zener Diodes

Zener Diodes

Zener diodes are a type of diode that allows current to flow in the reverse direction when the voltage across the diode exceeds the reverse breakdown voltage. The breakdown voltage, also known as the Zener voltage, is the voltage at which the diode starts to conduct in the reverse direction. Zener diodes are designed specifically to provide a regulated voltage across their terminals. They are commonly used in voltage regulation circuits and in power supply circuits.

Zener Diodes

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Image	Stock Code(▲▼)	Description	Manufacturer	Availability ⓘ (▲▼)	Price(AUD) (Ex. GST)(▲▼)	Enter Qty	Vz - Zener Voltage	Voltage Tolerance	Voltage Temperature Coefficient	Zener Current	Pd - Power Dissipation	Maximum Reverse Leakage Current	Zz - Zener Impedance	Maximum Operating Temperature	Configuration	Mounting Style	Package / Case	Packaging	Minimum Operating Temperature	Test Current	Qualification	Series

1SMA4737A

Zener Diodes SMA (DO-214AC) RoHS
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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.

Microdiode Electronics

38
Ships to you
between Fri. 24 Jul to Wed. 29 Jul

July 2026

July 2026
	S	M	T	W	T	F	S
27	28	29	30	1	2	3	4
28	5	6	7	8	9	10	11
29	12	13	14	15	16	17	18
30	19	20	21	22	23	24	25
31	26	27	28	29	30	31	1
32	2	3	4	5	6	7	8

AUD 0.0399

Multiples of: 10

SMMSZ4688T1G

Zener Diodes ZEN SOD123 REG 0.5W
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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

0
6 to 16 Weeks

December 2026

December 2026
	S	M	T	W	T	F	S
49	29	30	1	2	3	4	5
50	6	7	8	9	10	11	12
51	13	14	15	16	17	18	19
52	20	21	22	23	24	25	26
53	27	28	29	30	31	1	2
2	3	4	5	6	7	8	9

AUD 0.0333

Multiples of: 3000

4.7 V

5 %

500 mW

+ 150 C

Single

SMD/SMT

SOD - 123 - 2

Reel , Cut Tape

- 55 C

50 uA

MMSZ4688

MMSZ5230B

MMSZ5230B SOD123 4.7V ZENER DIODE SMD
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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.

Motorola

0
Ships to you
by Mon. 06 Jul

July 2026

July 2026
	S	M	T	W	T	F	S
27	28	29	30	1	2	3	4
28	5	6	7	8	9	10	11
29	12	13	14	15	16	17	18
30	19	20	21	22	23	24	25
31	26	27	28	29	30	31	1
32	2	3	4	5	6	7	8

AUD 0.0333

Multiples of: 3000

BZX84C11RF

Surface Mount Zener Diode
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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.

Taiwan Semiconductor

0
6 to 16 Weeks

December 2026

December 2026
	S	M	T	W	T	F	S
49	29	30	1	2	3	4	5
50	6	7	8	9	10	11	12
51	13	14	15	16	17	18	19
52	20	21	22	23	24	25	26
53	27	28	29	30	31	1	2
2	3	4	5	6	7	8	9

AUD 0.0333

Multiples of: 3000

TZM5258B-GS18

Zener Diodes 36 Volt 0.5 Watt 5%
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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.

Vishay

0
6 to 16 Weeks

December 2026

December 2026
	S	M	T	W	T	F	S
49	29	30	1	2	3	4	5
50	6	7	8	9	10	11	12
51	13	14	15	16	17	18	19
52	20	21	22	23	24	25	26
53	27	28	29	30	31	1	2
2	3	4	5	6	7	8	9

AUD 0.0334

Multiples of: 10000

36 V

5 %

0.093 % /K

500 mW (1/2 w)

70 Ohms

+ 175 C

Single

Smd/Smt

SOD - 80

Cut Tape

- 65 C

3.4 mA

MMBZ5256B-E3-08

Zener Diodes 30 Volt 0.225W 5%
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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.

Vishay

0
6 to 16 Weeks

December 2026

December 2026
	S	M	T	W	T	F	S
49	29	30	1	2	3	4	5
50	6	7	8	9	10	11	12
51	13	14	15	16	17	18	19
52	20	21	22	23	24	25	26
53	27	28	29	30	31	1	2
2	3	4	5	6	7	8	9

AUD 0.0334

Multiples of: 3000

30 V

5 %

0.091 % / C

100 nA

225 mW

100 nA

49 Ohms

+ 150 C

Single

Smd/Smt

SOT - 23 - 3

Reel

- 55 C

Mmbz52xx

MM5Z51V

Zener Diodes 51V 180Ohm 0.2W
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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

0
6 to 16 Weeks

December 2026

December 2026
	S	M	T	W	T	F	S
49	29	30	1	2	3	4	5
50	6	7	8	9	10	11	12
51	13	14	15	16	17	18	19
52	20	21	22	23	24	25	26
53	27	28	29	30	31	1	2
2	3	4	5	6	7	8	9

AUD 0.0334

Multiples of: 1

51 V

6 %

50 nA

200 mW

50 nA

180 Ohms

+ 150 C

Single

Smd/Smt

SOD - 523F

Reel

- 55 C

2 mA

Mm5z51

BZT52B3V6

Zener Diodes SOD-123 RoHS
Icon ROHS

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.

Formosa

0
6 to 16 Weeks

December 2026

December 2026
	S	M	T	W	T	F	S
49	29	30	1	2	3	4	5
50	6	7	8	9	10	11	12
51	13	14	15	16	17	18	19
52	20	21	22	23	24	25	26
53	27	28	29	30	31	1	2
2	3	4	5	6	7	8	9

AUD 0.0334

Multiples of: 20

BZT52-C18J

Zener Diodes BZT52-C18/SOD123/SOD2
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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

0
6 to 16 Weeks

December 2026

December 2026
	S	M	T	W	T	F	S
49	29	30	1	2	3	4	5
50	6	7	8	9	10	11	12
51	13	14	15	16	17	18	19
52	20	21	22	23	24	25	26
53	27	28	29	30	31	1	2
2	3	4	5	6	7	8	9

AUD 0.0334

Multiples of: 10000

18 V

5 %

590 mW

20 Ohms

+ 150 C

Single

SMD/SMT

SOD - 123 - 2

Reel , Cut Tape

- 55 C

5 mA

AEC - Q101

BZT52

ZMM43B

Diode: Zener; 0.5W; 43V; SMD; tape; MiniMELF
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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.

Diotec

0
6 to 16 Weeks

December 2026