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RL1210A431K
Public Made by Adomby adom
RUILON Shenzhen Ruilongyuan Elec Varistors, 1210. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownRL1210A431K
RUILON Shenzhen Ruilongyuan Elec · Varistors · 1210
RL1210A431K from RUILON Shenzhen Ruilongyuan Elec, in a 1210. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | 1 | passive | First end-termination of the bidirectional, symmetrical varistor; RL1210A431K is rated 275 VAC / 350 VDC max allowable voltage, with 387~473 V varistor voltage at 1 mA. |
| 2 | 2 | passive | Second end-termination of the bidirectional, symmetrical varistor, interchangeable with the first; clamping voltage is 710 V at 8/20μs and 5 A, and withstanding surge current is 250 A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | RUILON Shenzhen Ruilongyuan Elec |
| Package | 1210 |
| Category | Circuit Protection |
| Pins | 2 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Varistor voltage | V1mA | 387 | 473 | V | V1mA, 1 mA test current; RL1210A431K row | 2 | |
| Varistor voltage tolerance (K suffix) | -10 | 10 | % | K: ±10% | 1 | ||
| Max allowable voltage (AC) | VAC | 275 | V | RL1210A431K row | 2 | ||
| Max allowable voltage (DC) | VDC | 350 | V | RL1210A431K row | 2 | ||
| Max energy | 0.8 | J | 10/1000 μs | 2 | |||
| Max clamping voltage | VC | 710 | V | 8/20 μs | 2 | ||
| Withstanding surge current | I | 250 | A | 8/20 μs | 2 | ||
| Operating temperature range | -55 | 125 | °C | 1 | |||
| Storage temperature | 5 | 40 | °C | Storage condition | 2 | ||
| Storage relative humidity | 65 | %RH | Storage condition | 2 | |||
| Storage time | 12 | months | Taping package storage condition | 2 | |||
| Response time | 1 | ns | <1 ns | 2 | |||
| Varistor voltage change, bias humidity | -10 | 10 | % | 90%RH, 40ºC, working voltage, 1000 hrs | 2 | ||
| Varistor voltage change, thermal shock | -10 | 10 | % | -40ºC to 85ºC, 30 min cycle, 5 cycles | 2 | ||
| Varistor voltage change, full load | -10 | 10 | % | Working voltage, 85ºC, 1000 hrs | 2 | ||
| Solderability dip temperature | 240 | 250 | °C | 245±5 ºC, 3±1 sec | 2 | ||
| Soldering gun tip temperature | 280 | °C | Soldering gun under 30 W | 3 | |||
| Heat shock during soldering | 100 | °C | Do not give heat shock over 100°C in the process of soldering | 3 |
CAD (KiCad official)
- Symbol:
RL1210A431K - Footprint:
Resistor_SMD:R_1210_3225Metric - 3D model: 1210 (KiCad packages3D, STEP)
- 3D model files:
rl1210a431k-etched.step/rl1210a431k-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);rl1210a431k.step/rl1210a431k.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: RUILON Shenzhen Ruilongyuan Elec datasheet (4 pp, sha256
e8cd1faffba96262, retrieved 2026-10-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).