component
HCPL-2531-C1L0
Public Made by Adomby adom
KTP Logic Output Optoisolators, DIP-8. 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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README
markdownHCPL-2531-C1L0
KTP · Logic Output Optoisolators · DIP-8
HCPL-2531-C1L0 from KTP, in a DIP-8. 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 1 | input | Anode of LED channel 1; the datasheet limits input reverse voltage to 5 V and peak forward input current to 50 mA. |
| 2 | CATHODE 1 | passive | Cathode of LED channel 1, the return side of the input LED for channel 1. |
| 3 | CATHODE 2 | passive | Cathode of LED channel 2, the return side of the input LED for channel 2. |
| 4 | ANODE 2 | input | Anode of LED channel 2; the datasheet limits input reverse voltage to 5 V and peak forward input current to 50 mA. |
| 5 | GND | power_in | Ground reference for the photodiode/output stage of the isolator; the output collector voltage rating is -0.5 V to 15 V. |
| 6 | VO2 | output | Open-collector output of channel 2 with average output current limited to 8 mA and peak output current to 16 mA. |
| 7 | VO1 | output | Open-collector output of channel 1 with average output current limited to 8 mA and peak output current to 16 mA. |
| 8 | VCC | power_in | Supply voltage pin; the datasheet rates it from -0.5 V to 15 V (maximum 1 minute). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | KTP |
| Package | DIP-8 |
| Category | Optoisolators |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input reverse voltage | VR | 5 | V | 3 | |||
| Supply voltage (max 1 min) | VCC | -0.5 | 15 | V | 1 min | 3 | |
| Output collector voltage | VO | -0.5 | V | 3 | |||
| Base current | IB | 5 | mA | 3 | |||
| Average forward input current | IF(AVG) | 25 | mA | 3 | |||
| Peak forward input current | IF(PEAK) | 50 | mA | 3 | |||
| Peak transient input current | IF(TRANS) | 1 | A | 3 | |||
| Input power dissipation | PIN | 45 | mW | 3 | |||
| Average output current | IO(AVG) | 8 | mA | 3 | |||
| Peak output current | IO(PEAK) | 16 | mA | 3 | |||
| Output collector power dissipation | PO | 100 | mW | 3 | |||
| Storage temperature | TS | -55 | 125 | °C | 3 | ||
| Operating temperature | TA | -40 | 85 | °C | 3 | ||
| High level output current | IOH | 0.003 | 0.5 | µA | Vo=Vcc=5.5V, IF=0 mA | 3 | |
| Low level output voltage | VOL | 0.1 | 0.4 | V | Io=3 mA, IF=16 mA, Vcc=4.5V | 3 | |
| High level supply current | ICCH | 0.02 | 1 | µA | IF = 16 mA | 3 | |
| Low level supply current | ICCL | 50 | 200 | µA | IF = 0 mA | 3 | |
| Input forward voltage | VF | 1.5 | 1.7 | V | IF = 16 mA | 3 | |
| Input breakdown voltage (printed as forward) | BV | 5 | V | IR = 10 µA | 3 | ||
| Current transfer ratio | CTR | 19 | 24 | 50 | % | Vo=0.4V, IF=16 mA, Vcc=4.5V | 3 |
| Output logic high common mode transient immunity | /CMH/ | 30 | kV/µs | RL=4.1kΩ, IF = 0 mA, VCM=10 Vp-p, CL=15 pF | 3 | ||
| Output logic low common mode transient immunity | /CML/ | 30 | kV/µs | RL=4.1kΩ, IF = 0 mA (VCM text truncated in source) | 3 | ||
| Logic high output propagation delay | tPLH | 0.4 | 1.5 | µs | RL=4.1kΩ, CL=15 pF | 3 | |
| Logic low output propagation delay | tPHL | 0.3 | 1.5 | µs | RL=4.1kΩ, CL=15 pF | 3 | |
| Input-output leakage current | II-O | 1 | µA | 45% RH, t = 5 s, VI-O=3 kV dc | 3 | ||
| Input-output isolation voltage | VISO | 2500 | V rms | RH ≤ 50%, t = 1 min | 3 | ||
| Input capacitance | CIN | 60 | pF | f=1 MHz, VF=0 V | 3 | ||
| Forward voltage temperature coefficient | ΔVF/ΔTA | -1.6 | IF = 16 mA | 3 | |||
| Input-output isolation resistance | RI-O | 1012 | Ω | VI-O = 500 V dc | 3 | ||
| Input-output isolation capacitance | CI-O | 0.6 | pF | f = 1 MHz | 3 |
CAD (KiCad official)
- Symbol:
HCPL-2531-C1L0 - Footprint:
Package_DIP:DIP-8_W7.62mm - 3D model: DIP-8 (KiCad packages3D, STEP)
- 3D model files:
hcpl-2531-c1l0-etched.step/hcpl-2531-c1l0-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);hcpl-2531-c1l0.step/hcpl-2531-c1l0.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: KTP datasheet (5 pp, sha256
2e66c781714dd9fc, retrieved 2026-10-15, 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-haiku-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).