# PWR220T-20-R100F

**BOURNS** · Through Hole Resistors · TO-220-2

PWR220T-20-R100F from BOURNS, in a TO-220-2. 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 | One resistor terminal of the 2-lead TO-220 package (5.08 mm lead pitch), electrically isolated from the backplate; operating voltage is √(P*R) with a maximum of 250 V. |
| 2 | 2 | passive | Second resistor terminal of the 2-lead TO-220 package (5.08 mm lead pitch), electrically isolated from the backplate; 20 W rating at 25 °C case temperature. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | BOURNS |
| Package | TO-220-2 |
| 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 (suffix F) |  | -1 |  | 1 | % | F = 1 % absolute tolerance | 1 |
| TCR |  | -100 |  | 100 | ppm/°C | 0.02 Ω<R<130.0K Ω | 1 |
| Operating voltage (√P×R) |  |  |  | 250 | V | Operating voltage √P×R, maximum | 1 |
| Power rating |  |  |  | 20 | W | @ 25 °C case temperature | 1 |
| Inductance |  |  |  | 0.1 | µH |  | 1 |
| Operating temperature |  | -55 |  | 155 | °C |  | 1 |
| Short term overload ΔR | ΔR | -0.25 |  | 0.25 | % | 2x Pr for R < 2 Ω, 1.6 x Pr for R ≥ 2 Ω, V < 1.5 x Operating Voltage | 1 |
| Load life ΔR | ΔR | -1 |  | 1 | % | 1000 hours at rated power | 1 |
| Thermal shock ΔR | ΔR | -0.5 |  | 0.5 | % | -55 °C to 155 °C, 5 cycles | 1 |
| Resistance to soldering heat ΔR | ΔR | -0.5 |  | 0.5 | % | 10 seconds at 270 °C | 1 |
| Vibration ΔR | ΔR | -0.25 |  | 0.25 | % | 20 G 10-2000 Hz .06 in D.A. | 1 |
| Terminal strength ΔR | ΔR | -0.2 |  | 0.2 | % | MIL-STD-202, Method 211 Test A1 | 1 |
| Shock ΔR | ΔR | -0.5 |  | 0.5 | % | Saw Tooth: 100 g/6 ms | 1 |
| Humidity (steady state) ΔR | ΔR | -0.5 |  | 0.5 | % | 1000 hrs. 85 °C/85 % RH | 1 |
| High temperature exposure ΔR | ΔR | -0.5 |  | 0.5 | % | 100 hrs - 40 % Pr @ +125 °C | 1 |
| Resistance (nominal, this MPN R100) | R |  | 0.1 |  | Ω | Resistance code R100 | 1 |
| Thermal resistance | Rthj |  | 6.5 |  | °C/W |  | 1 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | Copper | tin | Pins....................Tinned Copper (Sn/Cu) | 1 |

## CAD (KiCad official)

- Symbol: `PWR220T-20-R100F`
- Footprint: `Package_TO_SOT_THT:TO-220-2_Vertical`
- 3D model: TO-220-2 (KiCad packages3D, STEP)
- 3D model files: `pwr220t-20-r100f-etched.step` / `pwr220t-20-r100f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pwr220t-20-r100f.step` / `pwr220t-20-r100f.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [BOURNS datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590896471543787520) (4 pp, sha256 `78c6145653907c7a`, retrieved 2026-10-20, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-5-5` (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/pwr220t-20-r100f-datasheet.pdf)