# LM385DBZ-1.2RG

**HANSCHIP semiconductor** · Voltage Reference · SOT-23-3

LM385DBZ-1.2RG from HANSCHIP semiconductor, in a SOT-23-3. 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 | CATHODE | passive | Cathode of the shunt voltage reference; the datasheet gives the 10µA to 20mA operating current range and an absolute maximum reverse current of 30 mA. |
| 2 | ANODE | passive | Anode of the reference diode; the absolute maximum forward current is 10 mA. |
| 3 | NC | unconnected | No internal connection (内部无连接). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HANSCHIP semiconductor |
| Package | SOT-23-3 |
| Category | Power Management (PMIC) |
| 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 |  | 1.2 | 1.24 | 1.28 | V | Ta=25℃, 10µA≤IR≤20mA | 3 |
| Reverse breakdown voltage change with current |  |  | 1 | 1.5 | mV | 10µA ≤ IR≤1mA | 3 |
| Reverse breakdown voltage change with current |  |  | 10 | 25 | mV | 1mA≤IR≤20mA | 3 |
| Minimum operating current |  |  | 8 | 15 | µA |  | 3 |
| Reverse dynamic impedance |  |  |  | 1 | Ω | IR=100µA, f=20Hz | 3 |
| Wideband noise (rms) |  |  |  | 60 | µV | IR=100µA,10Hz≤f≤10kHz | 3 |
| Average temperature coefficient |  |  |  | 80 | ppm/℃ | IR = 100 µA | 3 |
| Reverse current |  |  |  | 30 | mA |  | 2 |
| Forward current |  |  |  | 10 | mA |  | 2 |
| Operating temperature range |  | 0 |  | 70 | ℃ |  | 2 |
| Storage temperature |  | -55 |  | 150 | ℃ |  | 2 |
| Soldering temperature (spot, 10 s) |  |  |  | 245 | ℃ | Spot soldering, 10 seconds | 2 |
| Operating current (lower bound) |  | 10 |  |  | µA | Operating current range stated in product description | 1 |
| Operating current (upper bound) |  |  |  | 20 | mA | Operating current range stated in product description | 1 |
| Long-term stability |  |  | 20 |  | ppm | IR=100µA, T=1000Hr, TA=25°C±0.1°C | 3 |

## CAD (KiCad official)

- Symbol: `LM385DBZ-1.2RG`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files: `lm385dbz-1-2rg-etched.step` / `lm385dbz-1-2rg-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm385dbz-1-2rg.step` / `lm385dbz-1-2rg.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HANSCHIP semiconductor datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757726549196328960) (10 pp, sha256 `157af182943a2f1a`, retrieved 2026-10-09, 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 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/lm385dbz-1-2rg-datasheet.pdf)