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RL0805A391K

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by adom

RUILON Shenzhen Ruilongyuan Elec Varistors, 0805. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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rl0805a391k-etched.step rl0805a391k: factory component page (tier=lcsc) · Ray 21d ago
rl0805a391k-hero.glb rl0805a391k: hero GLB from the etched model (keeps the MPN mark) · Ray 21d ago
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RL0805A391K

RUILON Shenzhen Ruilongyuan Elec · Varistors · 0805

RL0805A391K from RUILON Shenzhen Ruilongyuan Elec, in a 0805. 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 end terminal of the bidirectional, symmetrical multilayer varistor (non-polarized); RL0805A391K has varistor voltage 351~429V at 1mA, max 250VAC / 320VDC.
2 2 passive Other end terminal of the bidirectional, symmetrical multilayer varistor (non-polarized); max clamping voltage 675V at 10A (8/20μs), 2A peak current, 0.1J max energy.

Key specifications

Parameter Value
Manufacturer RUILON Shenzhen Ruilongyuan Elec
Package 0805
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 351 429 V 2
Varistor voltage tolerance (K suffix) -10 10 % K = ±10% 1
Max. allowable voltage (AC) VAC 250 V 2
Max. allowable voltage (DC) VDC 320 V 2
Max. energy 0.1 J 10/1000μs 2
Max. clamping voltage VC 675 V 8/20μs, IP = 2 A 2
Withstanding surge current I 10 A 8/20μs 2
Bias humidity varistor voltage change VV/VV -10 10 % 90%RH, 40ºC, working voltage, 1000 hrs 2
Thermal shock varistor voltage change VV/VV -10 10 % -40ºC to 85ºC, 30 min cycle, 5 cycles 2
Full load varistor voltage change VV/VV -10 10 % Working voltage, 85ºC, 1000 hrs 2
Response time 1 ns 2
Operating temperature range -55 125 ℃ 1
Storage temperature range 5 40 ℃ Storage condition 2
Storage relative humidity 65 % Storage condition 2

CAD (KiCad official)

  • Symbol: RL0805A391K
  • Footprint: Resistor_SMD:R_0805_2012Metric
  • 3D model: 0805 (KiCad packages3D, STEP)
  • 3D model files: rl0805a391k-etched.step / rl0805a391k-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rl0805a391k.step / rl0805a391k.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 bdb2791a3d6b9dbb, retrieved 2026-10-17, 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