# PTV09A-4020U-B203

**BOURNS** · Potentiometers, Variable Resistors · THT

PTV09A-4020U-B203 from BOURNS, in a THT. 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 end terminal of the carbon resistive element (Terminal 1, the reference for the Terminal 1-2 output and 1-3 input curves); the datasheet gives a maximum operating voltage of 20 VDC / 50 VAC and a power rating of 0.05 W for linear and audio taper. |
| 2 | 2 | passive | Wiper (output) terminal, shown as Terminal 2 and measured as the Terminal 1-2 output voltage; the datasheet gives sliding noise of 100 mV max and residual resistance of 500 ohms or ±1 % max. |
| 3 | 3 | passive | Other end terminal of the carbon resistive element (Terminal 3, the Terminal 1-3 input reference); the datasheet gives a maximum operating voltage of 20 VDC / 50 VAC and a power rating of 0.05 W for linear and audio taper. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | BOURNS |
| Package | THT |
| Category | Resistors |
| Pins | 3 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating Temperature |  | -10 |  | 50 | °C |  | 1 |
| Maximum Operating Voltage (Linear and Audio), DC |  |  |  | 20 | VDC |  | 1 |
| Maximum Operating Voltage (Linear and Audio), AC |  |  |  | 50 | VAC |  | 1 |
| Sliding Noise |  |  |  | 100 | mV |  | 1 |
| Residual Resistance |  |  |  | 500 | ohms |  | 1 |
| Standard Resistance Tolerance |  | -20 |  | 20 | % | Standard resistance tolerance | 1 |
| Nominal Resistance (Resistance Code 203, B taper) | R |  | 20000 |  | ohms |  | 1 |

## CAD (KiCad official)

- Symbol: `PTV09A-4020U-B203`
- Footprint: `Adom_Gen:Bourns_PTV09_4df4a4`
- 3D model: THT (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [BOURNS datasheet](https://www.bourns.com/docs/product-datasheets/PTV09.pdf) (5 pp, sha256 `411cdb6a62e61f9c`, retrieved 2026-11-05, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/ptv09a-4020u-b203-datasheet.pdf)