# RL0603E005M300K

**RUILON Shenzhen Ruilongyuan Elec** · Varistors · 0603

RL0603E005M300K 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 | Terminal 1 of an unpolarised resistor; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised resistor; either orientation. |

## 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 |
|---|---|---|---|---|---|---|---|
| Operation temperature range |  | -55 |  | 85 | °C |  | 4 |
| Max. leakage current |  |  |  | 1 | µA | Applied voltage: specified working voltage (5 VDC) | 3 |
| Capacitance tolerance (K suffix, null capacitance error) |  | -20 |  | 20 | % | K suffix | 2 |
| Capacitance |  |  | 3 |  | pF | @1MHz | 3 |
| Working voltage |  |  | 5 | 5 | VDC |  | 3 |
| Trigger voltage |  |  | 50 |  | V |  | 3 |
| Clamping voltage |  |  | 25 |  | V |  | 3 |
| Leakage current after reflow soldering |  |  |  | 10 | µA | After reflow soldering (peak 260±5°C, min 10 s) | 4 |
| Leakage current after humidity load test |  |  |  | 10 | µA | 85±5°C, 85±5% RH | 4 |
| Leakage current after thermal shock |  |  |  | 10 | µA | -40±5°C to 85±5°C, 5 cycles | 4 |
| Leakage current after high temperature test |  |  |  | 10 | µA | 85±5°C, 1000±24 h | 4 |
| Leakage current after ESD test |  |  |  | 10 | µA | IEC61000-4-2 contact ±8 kV / air ±15 kV | 4 |
| Terminal electrode solder coverage (solderability) |  | 90 |  |  | % | Solder type H63A, 230±5°C, 5±1 s | 4 |
| Terminal electrode solder coverage (reflow) |  | 50 |  |  | % | Solder type H63A, reflow | 4 |
| Adhesive strength (1608/0603) |  | 1 |  |  | kgf | Adhesive strength test, 1608 size | 4 |
| Peak temperature (Pb-free reflow) | TP |  |  | 260 | °C | Pb-free assembly profile | 5 |
| Average ramp-up rate (TL to TP) |  |  |  | 3 | °C/second | Pb-free assembly profile | 5 |
| Ramp-down rate |  |  |  | 6 | °C/second | Pb-free assembly profile | 5 |
| Time 25°C to peak temperature |  |  |  | 8 | minutes | Pb-free assembly profile | 5 |

## CAD (KiCad official)

- Symbol: `RL0603E005M300K`
- Footprint: `Resistor_SMD:R_0603_1608Metric`
- 3D model: 0603 (KiCad packages3D, STEP)
- 3D model files: `rl0603e005m300k-etched.step` / `rl0603e005m300k-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rl0603e005m300k.step` / `rl0603e005m300k.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [RUILON Shenzhen Ruilongyuan Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586172530772086784) (6 pp, sha256 `a3c29cff2c9e6cc1`, retrieved 2026-10-19, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `two-terminal convention` (convention), consensus `off` (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](docs/rl0603e005m300k-datasheet.pdf)