A close-up of a blue Varistor 05D mov surge protection device with two leads.

Varistor 05D series

Key Features of Varistor 05D Series

● Superior Surge Protection: Metal oxide varistor (MOVs) effectively shields circuits from voltage spikes, ensuring the safety and longevity of your devices.

● Wide Voltage Range: Versatile and suitable for a broad range of applications, from telecommunications to industrial systems.

● Quick Response: Instantly reacts to overvoltage, providing reliable and immediate protection.

● Durable and Reliable: Engineered for long-term performance, delivering consistent results even in demanding conditions.

● Competitive Price, Compact Design: Offers exceptional value with space-saving design, making it an ideal choice for various applications.

INQUIRY

Details

Varistor chip diameter: 5mm

Electrical specifications:
1. Pressure sensitive voltage: 18~750V
2. Maximum allowable voltage: 11~460V(AC) 14~615V(DC)
3. Flow capacity (for reference)@1KHz: 30-1400pf

Varistor product introduction

Varistor is a kind of metal oxide semiconductor nonlinear ceramic resistance element with zinc oxide as the main component. According to its voltammetry characteristics, it can be divided into two types: symmetric (non-polar) and asymmetric (polar). Resistance is more sensitive to voltage,
When the voltage reaches a certain value, the resistance quickly switches on. Because the varistor has good non-line characteristics. Large flow, fast action and no continuous flow, etc., are widely used as surge protectors, lightning surge protectors and electronics
Voltage equipment lightning protection to prevent such overvoltages from interfering with the normal operation of electronic voltage equipment or damaging various circuit components.

Application of varistor

Products as surge protectors are widely used in various fields of electronic engineering:
1. Communication,
2. Electricity,
3. Home appliances,
Specific such as: telephone, switch, electricity meter, distribution cabinet, socket box, distribution box, power switch, power surge protection box, power voltage regulator, lightning arrester (SPD surge protection special) and so on.

Metal oxide varistor working principle

When at rest, varistors have a high impedance (several megohm) relative to the protected electronic components and do not change the circuit characteristics of the original design
When a transient surge voltage occurs (exceeding the breakdown voltage of the varistor), the impedance of the varistor becomes low (only a few ohms) and causes a short circuit of the original line.
In other words, the electronic product or component is also protected.

Advantages of varistors

1. Wide voltage range
2. Large flow capacity, large energy tolerance
3. Large nonlinear coefficient
4. Small leakage current
5. Symmetrical volt-ampere characteristics
6. Residual depression
7. Fast action, small response time
8. No continuous flow
9. Good voltage ratio
10. Strong surge absorption capacity
11. High efficiency surge current processing capability
12. Stable execution ability of suppressed voltage characteristics
13. Excellent material
14. Work reliably
15. Long life
16. Widely used

Varistor Naming rules

Diagram illustrating the naming rule of a Varistor MOV surge protection component, showing company code, element diameter, disc type, varistor voltage, and tolerance.

Varistor 05D series part of the product model summary table

Please see details of the 05D Varistor Part Numbers here.

N(Standard) Series
Diameter:5mm

J(High Surge&High Energy) Series
Diameter:5mm

Varistor packing specifications

Item	Part No.		Bulk			Reel		Ammo
			Bag	Box	Carton	Box	Carton	Box	Carton
1	05D	8R0M-391K	1000	2000	12000	2000	16000	2000	10000
2		431K-751K						1500	7500

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