# ZRB500F03TA

**Diodes Incorporated** · Voltage References · SOT-23

ZRB500F03TA from Diodes Incorporated, in a SOT-23. 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 | NC | unconnected | Pin 1 is floating or connected to pin 2 on the SOT23 package. |
| 2 | GND | power_in | Pin 2 is the ground reference for the reference voltage, and all voltages in the absolute maximum ratings are referenced to GND. |
| 3 | VR | output | Pin 3 is the 5.0 V precision voltage reference output, operating over a recommended reverse current of 0.05 mA to 15 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-23 |
| Category | Power Management ICs |
| 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 |
|---|---|---|---|---|---|---|---|
| Reverse breakdown voltage tolerance | VR | -3 |  | 3 | % | ZRB500F03TA Tol 3% | 4 |
| Reverse breakdown voltage | VR | 4.85 | 5 | 5.15 | V | IR = 150µA | 2 |
| Minimum operating current | IMIN |  | 30 | 50 | µA |  | 2 |
| Recommended operating current | IR | 0.05 |  | 15 | mA |  | 2 |
| Average reverse breakdown voltage temperature coefficient | TC |  | 15 | 50 | ppm/°C | IR(MIN) to IR(MAX) | 2 |
| Slope resistance | RS |  | 0.33 | 1.5 | Ω |  | 2 |
| Reverse dynamic impedance | ZR |  | 0.4 | 1 | Ω | IR = 1mA, f = 100Hz, IAC = 0.1IR | 2 |
| Wideband noise voltage | EN |  | 105 |  | µV(rms) | IR = 150µA, f = 10Hz to 10kHz | 2 |
| Reverse current |  |  |  | 25 | mA |  | 2 |
| Forward current |  |  |  | 25 | mA |  | 2 |
| Operating temperature |  | -40 |  | 85 | °C |  | 2 |
| Storage temperature |  | -55 |  | 125 | °C |  | 2 |
| Power dissipation |  |  |  | 330 | mW | TAMB = 25°C, SOT23 | 2 |

## CAD (KiCad official)

- Symbol: `ZRB500F03TA`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `zrb500f03ta-etched.step` / `zrb500f03ta-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `zrb500f03ta.step` / `zrb500f03ta.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Diodes Incorporated datasheet](https://www.diodes.com/assets/Datasheets/ZRB500F03TA.pdf) (5 pp, sha256 `0579e330849217aa`, retrieved 2026-10-30, 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/zrb500f03ta-datasheet.pdf)