component
AT851-CuH-D
Public Made by Adomby adom
AOTE Transistor, Photovoltaic Output Optoisolators, DIP-4. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownAT851-CuH-D
AOTE · Transistor, Photovoltaic Output Optoisolators · DIP-4
AT851-CuH-D from AOTE, in a DIP-4. 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 | Anode | passive | Anode of the input infrared LED; recommended forward current is 5 to 15 mA, absolute maximum 50 mA, with reverse voltage limited to 6 V. |
| 2 | Cathode | passive | Cathode of the input infrared LED, connected to the return of the input drive circuit. |
| 3 | Emitter | passive | Emitter of the output phototransistor; emitter-collector voltage is limited to 7 V maximum. |
| 4 | Collector | passive | Collector of the output phototransistor; collector-emitter voltage is rated 350 V maximum and collector current 50 mA maximum. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | AOTE |
| Package | DIP-4 |
| Category | Optoisolators |
| Pins | 4 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Forward Current | IF | 5 | 15 | mA | 3 | ||
| Collector-Emitter Voltage | VCEO | 5 | 350 | V | 3 | ||
| Collector Current | IC | 5 | 35 | mA | 3 | ||
| Forward Current | IF | 50 | mA | 3 | |||
| Reverse Voltage | VR | 6 | V | 3 | |||
| Peak forward current | IFP | 1000 | mA | 1us, pulse | 3 | ||
| Power dissipation derating factor (above Ta = 100°C) | PDD | 2.9 | mW/°C | above Ta = 100°C | 3 | ||
| Collector Power Dissipation | PC | 150 | mW | 3 | |||
| Collector Current | IC | 50 | mA | 3 | |||
| Collector-Emitter Voltage | VCEO | 350 | V | 3 | |||
| Emitter-Collector Voltage | VECO | 7 | V | 3 | |||
| Total Power Dissipation | Ptot | 200 | mW | 3 | |||
| Isolation Voltage | Viso | 5000 | Vrms | 3 | |||
| Operating Temperature | Topr | -55 | 110 | ℃ | 3 | ||
| Storage Temperature | Tstg | -55 | 125 | ℃ | 3 | ||
| Soldering Temperature | Tsol | 260 | ℃ | 3 | |||
| Collector-Emitter Breakdown Voltage | BVCEO | 350 | V | IC =0.1mA, IF =0mA | 4 | ||
| Emitter-Collector Voltage | BVECO | 7 | V | IE =10uA, IF =0mA | 4 | ||
| Current Transfer Ratio | CTR | 50 | 600 | % | IF=1mA , VCE=5V | 4 | |
| Collector-Emitter Saturation Voltage | VCE(sat) | 0.4 | V | IF=±20mA, IC =1mA | 4 | ||
| Reverse Current | IR | 10 | uA | VR =4V | 4 | ||
| Collector Dark Current | ICEO | 100 | nA | VCE=20V, IF =0mA | 4 | ||
| Terminal Capacitance | Ct | 30 | 250 | pF | V=0V, F =1KHz | 4 | |
| Forward Voltage | VF | 1.2 | 1.4 | V | IF=10mA | 4 | |
| Rise Time | Tr | 4 | 18 | µs | VCE=2V, IC =2mA, RL =100Ω | 4 | |
| Fall Time | Tf | 5 | 18 | µs | VCE=2V, IC =2mA, RL =100Ω | 4 |
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 | ③ 框架类型 Lead Frame（ Cu: 铜框架 Copper ） | 8 |
CAD (KiCad official)
- Symbol:
AT851-CuH-D - Footprint:
Package_DIP:DIP-4_W7.62mm - 3D model: DIP-4 (KiCad packages3D, STEP)
- 3D model files:
at851-cuh-d-etched.step/at851-cuh-d-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);at851-cuh-d.step/at851-cuh-d.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: AOTE datasheet (12 pp, sha256
e0cb8cd36f234e7e, retrieved 2026-10-16, 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+vision), consensusclaude-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).