# HoJLR1206-1W-40mR-1%-75ppm

**Milliohm** · Current Sense Resistors / Shunt Resistors · 1206

HoJLR1206-1W-40mR-1%-75ppm from Milliohm, in a 1206. 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 | Milliohm |
| Package | 1206 |
| 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 (F = ±1%) |  | -1 |  | 1 | % |  | 1 |
| Temperature coefficient of resistance | TCR | -75 |  | 75 | ppm/℃ |  | 2 |
| Operating temperature range |  | -55 |  | 155 | ℃ |  | 2 |
| Load life resistance change | ΔR/R | -1 |  | 1 | % | 1000 hours at rated power, 70℃, 1.5 hours ON, 0.5 hour OFF | 4 |
| Short time overload resistance change | ΔR/R | -1 |  | 1 | % | 5 X rated power for 5 s | 4 |
| Moisture load-free resistance change | ΔR/R | -1 |  | 1 | % | 85℃, 85%RH, 1000 hrs | 4 |
| Temperature cycle resistance change | ΔR/R | -1 |  | 1 | % | -55℃ & +155℃, 100 cycles, 15 min per extreme | 4 |
| Resistance to soldering heat resistance change | ΔR/R | -0.5 |  | 0.5 | % | 260±5℃ for 10±1 sec | 4 |
| High temperature exposure resistance change | ΔR/R | -1 |  | 1 | % | 155℃, 1000 hrs | 4 |
| Low temperature storage resistance change | ΔR/R | -1 |  | 1 | % | -55℃, 1000 hrs | 4 |
| Substrate bending resistance change | ΔR/R | -0.5 |  | 0.5 | % | Bending width 2 mm | 4 |
| Insulation resistance |  | 100 |  |  | MΩ | 100 V DC for 1 minute | 4 |
| Rated power | P |  | 1 |  | W | 1W variant of the HoJLR1206 series | 2 |

## CAD (KiCad official)

- Symbol: `HoJLR1206-1W-40mR-1%-75ppm`
- Footprint: `Resistor_SMD:R_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `hojlr1206-1w-40mr-1-75ppm-etched.step` / `hojlr1206-1w-40mr-1-75ppm-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `hojlr1206-1w-40mr-1-75ppm.step` / `hojlr1206-1w-40mr-1-75ppm.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Milliohm datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590207914331049984) (5 pp, sha256 `147dfca10465d97e`, retrieved 2026-10-17, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/hojlr1206-1w-40mr-1-75ppm-datasheet.pdf)