About Varistors

Varistors

A varistor (also known as a voltage-dependent resistor, or VDR) is a resistor whose resistance changes as the voltage across it increases or decreases. Varistors are typically constructed from a ceramic material containing semiconductor materials such as silicon and germanium. They have a relatively large resistance at low voltage levels, but as the voltage increases, their resistance drops significantly, allowing more current to flow through them. This feature makes them useful for absorbing transient voltages, which are sudden increases in the voltage that can occur when a device is powered on or off. Varistors are also commonly used to provide overvoltage protection, where they absorb and dissipate excessive voltages before they reach sensitive electronic components.

Varistors

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Image	Stock Code(▲▼)	Description	Manufacturer	Availability ⓘ (▲▼)	Price(AUD) (Ex. GST)(▲▼)	Enter Qty	Product	Voltage Rating DC	Voltage Rating AC	Clamping Voltage	Diameter	Peak Surge Current	Surge Energy Rating	Capacitance	Operating Temperature Range	Termination Style	Packaging	Package / Case	Series	Mounting Style	Varistor Voltage	Minimum Operating Temperature	Maximum Operating Temperature	Qualification

820554001

Varistors WE-VD Disc Varistor 500pF 100A 56VDC
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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.

Wurth

4850
Ships to you
by Wed. 23 Sep

September 2026

September 2026
	S	M	T	W	T	F	S
36	30	31	1	2	3	4	5
37	6	7	8	9	10	11	12
38	13	14	15	16	17	18	19
39	20	21	22	23	24	25	26
40	27	28	29	30	1	2	3
41	4	5	6	7	8	9	10

AUD 0.6324

Multiples of: 1

56 V

40 V

150 V

5 mm

100 A

2.1 J

500 pF

- 40 C to + 85 C

Radial

Reel

We - Vd

68 V

- 40 C

+ 85 C

820545001

Varistors Disk Varistor Standard WE-VD
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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.

Wurth

4850
Ships to you
by Wed. 23 Sep

September 2026

September 2026
	S	M	T	W	T	F	S
36	30	31	1	2	3	4	5
37	6	7	8	9	10	11	12
38	13	14	15	16	17	18	19
39	20	21	22	23	24	25	26
40	27	28	29	30	1	2	3
41	4	5	6	7	8	9	10

AUD 0.634

Multiples of: 1

820513011

Varistors WE-VD THT LS=7.5mm 385VDC 70J 190pF
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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.

Wurth

4850
Ships to you
by Wed. 23 Sep

September 2026

September 2026
	S	M	T	W	T	F	S
36	30	31	1	2	3	4	5
37	6	7	8	9	10	11	12
38	13	14	15	16	17	18	19
39	20	21	22	23	24	25	26
40	27	28	29	30	1	2	3
41	4	5	6	7	8	9	10

AUD 0.6432

Multiples of: 1

MOV

385 VDC

300 VAC

775 V

12.5 mm

2.5 kA

70 J

190 pF

Through Hole

Cut Tape

WE - VD

PCB Mount

470 V

- 40 C

+ 85 C

820543011

Wurth Electronics Varistors WE-VD 14mm Disc 420pF 4500A 385VDC
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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.

Wurth

4850
Ships to you
by Wed. 23 Sep

September 2026

September 2026
	S	M	T	W	T	F	S
36	30	31	1	2	3	4	5
37	6	7	8	9	10	11	12
38	13	14	15	16	17	18	19
39	20	21	22	23	24	25	26
40	27	28	29	30	1	2	3
41	4	5	6	7	8	9	10

AUD 0.7037

Multiples of: 1

385 VDC

300 VAC

775 V

14 mm

4.5 kA

140 J

420 pF

- 40 C to + 125 C

Radial

Reel

We - Vd

470 VDC

- 40 C

+ 125 C

820542711

Varistors WE-VD Disc Varistor 450pF 4500A 350VDC
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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.

Wurth

4850
Ships to you
by Wed. 23 Sep

September 2026

September 2026
	S	M	T	W	T	F	S
36	30	31	1	2	3	4	5
37	6	7	8	9	10	11	12
38	13	14	15	16	17	18	19
39	20	21	22	23	24	25	26
40	27	28	29	30	1	2	3
41	4	5	6	7	8	9	10

AUD 0.7037

Multiples of: 1

350 V

275 V

710 V

14 mm

4.5 kA

132 J

450 pF

- 40 C to + 125 C

Radial

Reel

We - Vd

430 V

- 40 C

+ 125 C

820572501

Wurth Electronics Varistors WE-VD 7mm Disc 1820pF 250A 31VDC
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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.

Wurth

4850
Ships to you
by Wed. 23 Sep

September 2026

September 2026
	S	M	T	W	T	F	S
36	30	31	1	2	3	4	5
37	6	7	8	9	10	11	12
38	13	14	15	16	17	18	19
39	20	21	22	23	24	25	26
40	27	28	29	30	1	2	3
41	4	5	6	7	8	9	10

AUD 0.7084

Multiples of: 1

31 VDC

25 VAC

77 V

7 mm

250 A

2.4 J

1820 pF

- 40 C to + 85 C

Radial

Reel

We - Vd

39 VDC

- 40 C

+ 85 C

820571406

Varistors WE-VD Disc Varistor 2930pF 250A 18VDC
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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.

Wurth

4850
Ships to you
by Wed. 23 Sep

September 2026

September 2026
	S	M	T	W	T	F	S
36	30	31	1	2	3	4	5
37	6	7	8	9	10	11	12
38	13	14	15	16	17	18	19
39	20	21	22	23	24	25	26
40	27	28	29	30	1	2	3
41	4	5	6	7	8	9	10

AUD 0.7084

Multiples of: 1

18 V

14 V

43 V

7 mm

250 A

1.4 J

2930 pF

- 40 C to + 85 C

Radial

Reel

We - Vd

22 V

- 40 C

+ 85 C

820574001

Wurth Electronics Varistors WE-VD 7mm Disc 1120pF 250A 56VDC
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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.

Wurth

4850
Ships to you
by Wed. 23 Sep

September 2026

September 2026
	S	M	T	W	T	F	S
36	30	31	1	2	3	4	5
37	6	7	8	9	10	11	12
38	13	14	15	16	17	18	19
39	20	21	22	23	24	25	26
40	27	28	29	30	1	2	3
41	4	5	6	7	8	9	10

AUD 0.7084

Multiples of: 1

56 VDC

40 VAC

135 V

7 mm

250 A

4.3 J

1120 pF

- 40 C to + 85 C

Radial

Reel

We - Vd

68 VDC

- 40 C

+ 85 C

820576001

Wurth Electronics Varistors WE-VD 7mm Disc 540pF 1200A 85VDC
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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.

Wurth

4850
Ships to you
by Wed. 23 Sep

September 2026

September 2026
	S	M	T	W	T	F	S
36	30	31	1	2	3	4	5
37	6	7	8	9	10	11	12
38	13	14	15	16	17	18	19
39	20	21	22	23	24	25	26
40	27	28	29	30	1	2	3
41	4	5	6	7	8	9	10

AUD 0.7084

Multiples of: 1

85 VDC

60 VAC

165 V

7 mm

1.2 kA

7 J

540 pF

- 40 C to + 85 C

Radial

Reel

We - Vd

100 VDC

- 40 C

+ 85 C

820573001

Varistors Disk Varistor Standard WE-VD
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.

Wurth

4850
Ships to you
by Wed. 23 Sep

September 2026