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RL1206A300K

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RUILON Shenzhen Ruilongyuan Elec Varistors, 1206. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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RL1206A300K

RUILON Shenzhen Ruilongyuan Elec · Varistors · 1206

RL1206A300K from RUILON Shenzhen Ruilongyuan Elec, in a 1206. 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 One of two interchangeable end terminations (WB 0.50±0.20 mm) of the bidirectional multilayer varistor; the RL1206A300K has 28.8~36 V varistor voltage at 1 mA, 24 VDC / 18 VAC maximum allowable voltage, and 79 V maximum clamping at 100 A (8/20μs).
2 2 passive Second interchangeable end termination of the bidirectional, symmetrical varistor; the recommended pad layout uses two pads with a 2.0 mm gap (K) and a 4.0 mm overall span (J).

Key specifications

Parameter Value
Manufacturer RUILON Shenzhen Ruilongyuan Elec
Package 1206
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 tolerance (part code K) -10 10 % Standard Tolerance K: ±10% 1
Varistor voltage V1mA 28.8 36 V 2
Max. allowable AC voltage VAC 18 V 2
Max. allowable DC voltage VDC 24 V 2
Max. energy 0.5 J 10/1000μs 2
Max. clamping voltage VC 79 V 8/20μs, IP(A) = 5 2
Withstanding surge current I 100 A 8/20μs 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, 30min cycle, 5 cycles 2
Varistor voltage change, full load -10 10 % Working Voltage, 85ºC, 1000 hrs 2
Operating temperature range -55 125 ℃ 1
Storage temperature range 5 40 ºC Storage condition, taping package 3

CAD (KiCad official)

  • Symbol: RL1206A300K
  • Footprint: Resistor_SMD:R_1206_3216Metric
  • 3D model: 1206 (KiCad packages3D, STEP)
  • 3D model files: rl1206a300k-etched.step / rl1206a300k-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rl1206a300k.step / rl1206a300k.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: RUILON Shenzhen Ruilongyuan Elec datasheet (4 pp, sha256 d28fdd03e354ca9c, retrieved 2026-10-18, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-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).

Datasheet PDF