# RN73H1ETTP1502B25

**KOA Speer Elec** · Current Sense Resistors / Shunt Resistors · 0402

RN73H1ETTP1502B25 from KOA Speer Elec, in a 0402. 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 | KOA Speer Elec |
| Package | 0402 |
| 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 (code B) |  | -0.1 |  | 0.1 | % | Part number tolerance letter B = ±0.1% | 1 |
| T.C.R. (code 25) | TCR | -25 |  | 25 | ppm/°C | Part number TCR code 25; T.C.R. ±25 ppm/°C for 1E (0402) row | 2 |
| Maximum working voltage |  |  |  | 50 | V | 1E (0402) row | 2 |
| Maximum overload voltage |  |  |  | 100 | V | 1E (0402) row | 2 |
| Rated power at 85°C | P |  |  | 0.063 | W | 1E (1/16W), power rating @ 85°C | 2 |
| Operating temperature |  | -55 |  | 155 | °C | Operating Temperature stated for RN73H series | 2 |
| Human body model ESD sensitivity |  | 0.5 |  |  | kV | 1E: 0.5kV and more, Human Body Model 100pF, 1.5kΩ | 2 |
| Overload (short time) ΔR | ΔR | -0.05 | 0.01 | 0.05 | % | Rated voltage x 2.5 or max overload voltage, whichever is less, for 5 seconds | 2 |
| Resistance to solder heat ΔR | ΔR | -0.05 | 0.01 | 0.05 | % | 260°C ± 5°C, 10 seconds ± 1 second; printed footnote: depends on resistance value | 2 |
| Rapid change of temperature ΔR | ΔR | -0.1 | 0.02 | 0.1 | % | -55°C (30 min), +155°C (30 min), 1000 cycles (1E); printed footnote: depends on resistance value | 2 |
| Moisture resistance ΔR | ΔR | -0.1 | 0.05 | 0.1 | % | 85°C ± 2°C, 85% ± 5% RH, 1000 hours; 1.5 hr ON, 0.5 hr OFF cycle; printed footnote: depends on resistance value | 2 |
| Endurance at 85°C ΔR | ΔR | -0.1 | 0.03 | 0.1 | % | 85°C ± 2°C, 3000 hours, 1.5 hr ON, 0.5 hr OFF cycle; printed footnote: depends on resistance value | 2 |
| High temperature exposure ΔR | ΔR | -0.1 | 0.05 | 0.1 | % | +155°C, 1000 hours; printed footnote: depends on resistance value | 2 |
| Nominal resistance | R |  | 15 |  | kΩ | Decoded from part number 1502 (3 significant figures + multiplier) | 1 |
| Rated ambient temperature |  |  | 85 |  | °C | Rated ambient temperature; derate per ambient derating curve above 85°C | 1 |
| Rated terminal part temperature (1E) |  |  | 90 |  | °C | 1E (0402) terminal part temperature derating point | 1 |
| T.C.R. typical (+25°C/+125°C) | TCR |  | 5 |  | x10-6K | +25°C/+125°C: T.C.R. typical | 2 |

## CAD (KiCad official)

- Symbol: `RN73H1ETTP1502B25`
- Footprint: `Resistor_SMD:R_0402_1005Metric`
- 3D model: 0402 (KiCad packages3D, STEP)
- 3D model files: `rn73h1ettp1502b25-etched.step` / `rn73h1ettp1502b25-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rn73h1ettp1502b25.step` / `rn73h1ettp1502b25.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [KOA Speer Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602849323906445312) (2 pp, sha256 `107ee631f82076a0`, retrieved 2026-10-17, 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/rn73h1ettp1502b25-datasheet.pdf)