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RL0603A390K

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RUILON Shenzhen Ruilongyuan Elec Varistors, 0603. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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RL0603A390K

RUILON Shenzhen Ruilongyuan Elec · Varistors · 0603

RL0603A390K from RUILON Shenzhen Ruilongyuan Elec, in a 0603. 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 (RL0603A390K: varistor voltage 36~45 V at 1 mA, max 25 VAC / 30 VDC), interchangeable with the other terminal.
2 2 passive Second end termination of the bidirectional, symmetrical varistor (RL0603A390K: max clamping voltage 99 V at 8/20 µs, 1 A), interchangeable with the other terminal.

Key specifications

Parameter Value
Manufacturer RUILON Shenzhen Ruilongyuan Elec
Package 0603
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 36 45 V 2
Varistor voltage tolerance (code K) -10 10 % Varistor voltage tolerance K: ±10% 1
Max. allowable voltage AC 25 V 2
Max. allowable voltage DC 30 V 2
Max. energy 0.3 J 10/1000μs 2
Clamping voltage VC 99 V 8/20μs 2
Withstanding surge current I 30 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 to85ºC,30min.cycle,5 cycles 2
Varistor voltage change, full load voltage -10 10 % Working Voltage,85ºC,1000 hrs 2
Response time 1 ns <1ns 2
Operating temperature range -55 125 ℃ 1
Storage temperature 5 40 ℃ 2
Storage relative humidity 65 %RH 2
Storage time 12 months Taping package, 12 months max 2
Heat shock during soldering 100 °C Heat shock in soldering process 3
Soldering gun tip temperature 280 °C Soldering gun under 30W, within 3 seconds 3
Reflow peak temperature (Pb-free) TP 260 °C Printed as 260 +0/-5°C 3

CAD (KiCad official)

  • Symbol: RL0603A390K
  • Footprint: Resistor_SMD:R_0603_1608Metric
  • 3D model: 0603 (KiCad packages3D, STEP)
  • 3D model files: rl0603a390k-etched.step / rl0603a390k-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rl0603a390k.step / rl0603a390k.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 57dffee942a9641e, 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