component
LM385-1.2
Public Made by Adomby adom
Sungine Voltage References, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownLM385-1.2
Sungine · Voltage References · SOT-23
LM385-1.2 from Sungine, 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 | CATHODE | passive | Cathode (reference voltage terminal) with 1.240 V typical reverse breakdown voltage (1.200 to 1.280 V) over 10 µA to 20 mA operating current, and 30 mA absolute maximum reverse current. |
| 2 | ANODE | passive | Anode (return terminal) of the two-terminal reference, with 10 mA absolute maximum forward current. |
| 3 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Sungine |
| Package | SOT-23 |
| Category | Power Supply Chip |
| 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 | VR | 1.2 | 1.24 | 1.28 | V | Ta=25℃, 10µA≤IR≤20mA | 3 |
| Minimum operating current | IR(min) | 8 | 15 | µA | 3 | ||
| Reverse breakdown voltage change with current (low range) | ΔVR | 1 | 1.5 | mV | 10µA ≤ IR ≤ 1mA | 3 | |
| Reverse breakdown voltage change with current (high range) | ΔVR | 10 | 25 | mV | 1mA ≤ IR ≤ 20mA | 3 | |
| Reverse dynamic impedance | 1 | Ω | IR=100µA, f=20Hz | 3 | |||
| Wideband noise (rms) | 60 | µV | IR=100µA, 10Hz≤f≤10kHz | 3 | |||
| Long term stability | 20 | ppm | IR=100µA, T=1000Hr, TA=25°C±0.1°C | 3 | |||
| Average temperature coefficient | 30 | ppm/℃ | IR = 100 µA | 3 | |||
| Reverse current | IR | 30 | mA | 2 | |||
| Forward current | IF | 10 | mA | 2 | |||
| Operating temperature range | 0 | 70 | ℃ | 2 | |||
| Storage temperature | -55 | 150 | ℃ | 2 | |||
| Soldering temperature | 260 | ℃ | spot soldering, 10 seconds | 2 |
CAD (KiCad official)
- Symbol:
LM385-1.2 - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
lm385-1-2-etched.step/lm385-1-2-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm385-1-2.step/lm385-1-2.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Sungine datasheet (8 pp, sha256
18a7f70f9ccffd3a, retrieved 2026-10-22, 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, primaryclaude-sonnet-5-5(text), consensusclaude-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).