# L4CA0612LR010FNR

**Littelfuse** · Chip Resistor - Surface Mount · 0612

L4CA0612LR010FNR from Littelfuse, in a 0612. 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 | Littelfuse |
| Package | 0612 |
| Category | Resistors |
| 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 |
|---|---|---|---|---|---|---|---|
| Resistance tolerance | Rt | -1 |  | 1 | % | Part number tolerance code F = ±1% | 2 |
| Temperature coefficient of resistance (TCR) |  | -50 |  | 50 | ppm/°C |  | 2 |
| Resistance (nominal) | R |  | 10 |  | mΩ |  | 2 |
| Rated power | P |  | 1 |  | W |  | 2 |
| Resistance change after short time overload |  | -1 |  | 1 | % | Applied voltage: 2.5X rated power. Test duration: 5 seconds | 4 |
| Resistance change after load life |  | -1 |  | 1 | % | Test Temperature: 70 °C ± 3 °C, Applied voltage: rated voltage. Test period: 1,000 hours with power cycling 90 min. power ON / 30 min. power OFF | 4 |
| Resistance change after moisture resistance |  | -1 |  | 1 | % | Test Condition: 40 °C ± 3 °C / 90-95% RH. Test period: 1,000 hours | 4 |
| Resistance change after temperature cycle (thermal shock) |  | -1 |  | 1 | % | Repeat 1,000 cycles: -55 ± 3 °C (30 min.) / +155 ±3 °C (30 min.), transition time 1 minute maximum | 4 |
| Resistance change after high temperature exposure |  | -1 |  | 1 | % | Test Temperature: Maximum rated operational temperature. Test period: 1,000 hours, no electrical load | 4 |
| Resistance change after HAST |  | -1 |  | 1 | % | Test Temperature: 121 °C ± 2 °C, Test Pressure: 30 PSIA, Test period: 48 hours, no electrical load | 4 |
| Resistance change after terminal strength |  | -0.5 |  | 0.5 | % | Test Force: 17.7N, Duration: 60 ±1 seconds, parts soldered onto a PCB | 4 |
| Resistance change after vibration |  | -1 |  | 1 | % | Frequency: 10 - 2,000 Hz, Acceleration: 15 ± 1.5 gs, Test Duration: 20 mins / 12 Cycles | 4 |
| Resistance change after mechanical shock |  | -1 |  | 1 | % | Force: 50 ± 5 gs, Test Duration: 11 ±1 milliseconds | 4 |

## CAD (KiCad official)

- Symbol: `L4CA0612LR010FNR`
- Footprint: `Resistor_SMD:R_0612_1632Metric`
- 3D model: 0612 (KiCad packages3D, STEP)
- 3D model files: `l4ca0612lr010fnr-etched.step` / `l4ca0612lr010fnr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `l4ca0612lr010fnr.step` / `l4ca0612lr010fnr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Littelfuse datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8600444583201148928) (6 pp, sha256 `4c589b2cb121671f`, retrieved 2026-10-16, 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/l4ca0612lr010fnr-datasheet.pdf)