# WLTM0612QLR006FNR

**Littelfuse** · Current Sense Resistors / Shunt Resistors · 0612

WLTM0612QLR006FNR 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 | % |  | 2 |
| Temperature coefficient of resistance | TCR | -100 |  | 100 | ppm/ºC |  | 2 |
| Resistance change after Short Time Overload |  | -1 |  | 1 | % | JIS-C-5201, 4.13; applied voltage 2.5X rated power; 5 seconds | 4 |
| Resistance change after Load Life |  | -1 |  | 1 | % | JIS-C-5201-1, 4.25; 70 °C ±3 °C; rated voltage; 1,000 hours | 4 |
| Resistance change after Moisture Resistance |  | -1 |  | 1 | % | JIS-C-5201-1, 4.24; 40 °C ±3 °C / 90-95% RH; 1,000 hours | 4 |
| Resistance change after Temperature Cycle |  | -1 |  | 1 | % | JESD22-A-104; 1,000 cycles, -55 ±3 °C / +155 ±3 °C | 4 |
| Resistance change after High Temperature Exposure |  | -1 |  | 1 | % | MIL-STD-202, Method 108, Condition D; maximum rated operational temperature; 1,000 hours; no electrical load | 4 |
| Resistance change after HAST |  | -1 |  | 1 | % | 121 °C ± 2 °C; 30 PSIA; 48 hours; no electrical load | 4 |
| Resistance change after Terminal Strength |  | -0.5 |  | 0.5 | % | AEC-Q200-006; test force 17.7N; 60 ±1 seconds | 4 |
| Resistance change after Vibration |  | -1 |  | 1 | % | MIL-STD-202, Method 204, Condition B; 10-2,000 Hz; 15 ±1.5 gs; 20 mins / 12 cycles | 4 |
| Resistance change after Mechanical Shock |  | -1 |  | 1 | % | MIL-STD-202, Method 213, Condition A; 50 ±5 gs; 11 ±1 milliseconds | 4 |
| Resistance (Ro) | Ro |  | 6 |  | mΩ |  | 2 |
| Power rating |  |  | 1.5 |  | W |  | 2 |

## CAD (KiCad official)

- Symbol: `WLTM0612QLR006FNR`
- Footprint: `Resistor_SMD:R_0612_1632Metric`
- 3D model: 0612 (KiCad packages3D, STEP)
- 3D model files: `wltm0612qlr006fnr-etched.step` / `wltm0612qlr006fnr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `wltm0612qlr006fnr.step` / `wltm0612qlr006fnr.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/8604382698056269824) (7 pp, sha256 `90339ad00ae86738`, retrieved 2026-10-15, 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/wltm0612qlr006fnr-datasheet.pdf)