component
KP40101B
Public Made by Adomby adom
Cosmo Electronics 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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README
markdownKP40101B
Cosmo Electronics · Transistor, Photovoltaic Output Optoisolators · DIP-4
KP40101B from Cosmo Electronics, 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 | Input LED anode; absolute maximum ratings give forward current IF 50 mA and reverse voltage VR 6 V. |
| 2 | Cathode | passive | Input LED cathode, the return side of the input forward-current path rated at IF 50 mA maximum with VR 6 V reverse. |
| 3 | Emitter | passive | Output phototransistor emitter; the datasheet rates emitter-collector voltage VECO at 0.1 V. |
| 4 | Collector | passive | Output phototransistor collector; the datasheet rates collector-emitter voltage VCEO at 300 V and collector current IC at 150 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Cosmo Electronics |
| 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 |
|---|---|---|---|---|---|---|---|
| Current transfer ratio | CTR | 600 | 9000 | % | IF =1mA,VCE=2V | 1 | |
| Input forward voltage | VF | 1.2 | 1.4 | V | IF =20mA | 1 | |
| Peak forward voltage | VFM | 3.5 | V | IFM =0.5A | 1 | ||
| Reverse current | IR | 10 | uA | VR =4V | 1 | ||
| Collector dark current | ICEO | 1 | uA | VCE =200V, IF=0 | 1 | ||
| Collector-emitter saturation voltage | VCE (sat) | 1.5 | V | IF=20mA, IC=5mA | 1 | ||
| Floating capacitance | Cf | 0.6 | 1 | pF | V=0, f=1MHZ | 1 | |
| Response time (Rise) | tr | 60 | 300 | us | VCE=2V, IC=20mA, RL=100ohm | 1 | |
| Response time (Fall) | tf | 50 | 250 | us | 1 | ||
| Input forward current | IF | 50 | mA | 1 | |||
| Peak forward current | IFM | 1 | 1 | ||||
| Reverse voltage | VR | 6 | V | 1 | |||
| Input power dissipation | PD | 70 | mW | 1 | |||
| Collector-emitter voltage | VCEO | 300 | V | 1 | |||
| Emitter-collector voltage | VECO | 0.1 | V | 1 | |||
| Collector current | IC | 150 | mA | 1 | |||
| Collector power dissipation | PC | 200 | mW | 1 | |||
| Total power dissipation | Ptot | 200 | mW | 1 | |||
| Isolation voltage | Viso | 5000 | Vrms | 1 minute | 1 | ||
| Operating temperature | Topr | -30 | 100 | °C | 1 | ||
| Storage temperature | Tstg | -55 | 125 | °C | 1 | ||
| Soldering temperature | Tsol | 260 | °C | 10 second | 1 |
CAD (KiCad official)
- Symbol:
KP40101B - Footprint:
Package_DIP:DIP-4_W7.62mm - 3D model: DIP-4 (KiCad packages3D, STEP)
- 3D model files:
kp40101b-etched.step/kp40101b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);kp40101b.step/kp40101b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Cosmo Electronics datasheet (2 pp, sha256
f228e39cc944c969, retrieved 2026-10-15, tier: lcsc) - 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).