# Varistors

- Page: https://www.songtian-ste.com/en/products/metal-oxide-varistors/
- Chinese version: https://www.songtian-ste.com/zh/products/metal-oxide-varistors/

Radial-leaded, medium/large-disc high-energy and SMD varistors.

- **series**: 7
- **part numbers**: 3,345

Product finder: [Varistors](https://www.songtian-ste.com/en/products/finder/?type=varistors)

[**2025 product catalog (PDF)**](https://www.songtian-ste.com/downloads/songtian-product-catalog-2025-en.pdf)

## Radial-leaded varistors

4

3,345 part numbers

| Series | Key ranges | Approvals | Part numbers |
| --- | --- | --- | --- |
| [**S** S Series Standard Radial-Leaded Metal-Oxide Varistors](https://www.songtian-ste.com/en/products/metal-oxide-varistors/s-standard/) | **Nominal varistor voltage**: 18–1,100 V; **Max. peak current (8/20 µs)**: 100–6,500 A | UL, CQC | 1,409 |
| [**Z / Z2** Z Series High-Energy Radial-Leaded Metal-Oxide Varistors](https://www.songtian-ste.com/en/products/metal-oxide-varistors/z-high-energy/) | **Nominal varistor voltage**: 18–1,200 V; **Max. peak current (8/20 µs)**: 250–18,000 A |   | 1,259 |
| [**Q** Q Series 6kV/3kA Radial-Leaded Metal-Oxide Varistors](https://www.songtian-ste.com/en/products/metal-oxide-varistors/q-annex-q/) | **Nominal varistor voltage**: 82–1,100 V; **Max. peak current (8/20 µs)**: 3,500–10,000 A |   | 656 |
| [**Q-A** Automotive Q Series 6kV/3kA Radial-Leaded Metal-Oxide Varistors (AEC-Q200)](https://www.songtian-ste.com/en/products/metal-oxide-varistors/automotive-q-mov/) | **Automotive qualification**: AEC-Q200 qualified part numbers available; **Nominal varistor voltage**: 82–1,000 V | CQC, UL, VDE AEC-Q200 | 21 |

## High-energy varistors (medium and large disc)

2

Series overview; part data on request

| Series | Key ranges | Approvals | Part numbers |
| --- | --- | --- | --- |
| [**D** D Series Large-Disc High-Energy Metal-Oxide Varistors](https://www.songtian-ste.com/en/products/metal-oxide-varistors/d-high-energy/) | **Nominal varistor voltage V1mA**: 200–1,800 V; **Disc size**: 32–53 mm |   | On request |
| [**R** R Series High-Energy Metal-Oxide Varistors](https://www.songtian-ste.com/en/products/metal-oxide-varistors/r-high-energy/) | **Nominal varistor voltage V1mA**: 200–1,800 V; **Disc size**: 10–34 mm |   | On request |

## SMD varistors

1

Part numbers and datasheets on request

| Series | Key ranges | Approvals | Part numbers |
| --- | --- | --- | --- |
| [**SMD-MOV** SMD-MOV Surface-Mount Metal-Oxide Varistors](https://www.songtian-ste.com/en/products/smd-varistors/smd-mov/) SMD | **Nominal code range**: 201K–821K; **Case size**: 3225 / 4032 |   | On request |

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Approval scope as stated on each certificate.