component
K30101B
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
markdownK30101B
Cosmo Electronics · Transistor, Photovoltaic Output Optoisolators · DIP-4
K30101B 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, Cathode | passive | One terminal of the two infrared emitting diodes connected in inverse parallel; the input is rated at forward current ±50 mA continuous and ±1 A peak (IFM). |
| 2 | Anode, Cathode | passive | Other terminal of the two infrared emitting diodes connected in inverse parallel; the input is rated at forward current ±50 mA continuous and ±1 A peak (IFM). |
| 3 | Emitter | passive | Emitter of the phototransistor detector, with emitter-collector voltage VECO rated at 6 V maximum. |
| 4 | Collector | passive | Collector of the phototransistor detector, with collector-emitter voltage VCEO rated at 80 V maximum and collector current IC rated at 50 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 |
|---|---|---|---|---|---|---|---|
| Forward voltage | VF | 1.2 | 1.4 | V | IF=±20mA | 3 | |
| Peak forward voltage | VFM | 3 | V | IFM=±0.5A | 3 | ||
| Collector dark current | ICEO | 0.1 | μA | VCE=20V | 3 | ||
| Current transfer ratio, rank B (K3010 B) | CTR | 60 | 300 | % | 4 | ||
| Collector-emitter saturation voltage | VCE(sat) | 0.1 | 0.3 | V | IF=±20mA, IC=1mA | 3 | |
| Floating capacitance | Cf | 0.6 | 1 | pF | V=0, f=1MHz | 3 | |
| Response time (rise) | tr | 5 | 20 | μs | VCE=2V, IC=2mA, RL=100Ω | 3 | |
| Response time (fall) | tf | 4 | 20 | μs | 3 | ||
| Forward current | IF | -50 | 50 | mA | 3 | ||
| Peak forward current | IFM | -1 | 1 | A | 3 | ||
| Power dissipation (input) | PD | 70 | mW | 3 | |||
| Collector-emitter voltage | VCEO | 80 | V | 3 | |||
| Emitter-collector voltage | VECO | 6 | V | 3 | |||
| Collector current | IC | 50 | mA | 3 | |||
| Collector power dissipation | PC | 150 | mW | 3 | |||
| Total power dissipation | Ptot | 200 | mW | 3 | |||
| Isolation voltage | Viso | 5000 | Vrms | 1 minute | 3 | ||
| Operating temperature | Topr | -55 | 115 | ℃ | 3 | ||
| Storage temperature | Tstg | -55 | 125 | ℃ | 3 | ||
| Soldering temperature | Tsol | 260 | ℃ | 10 seconds | 3 |
CAD (KiCad official)
- Symbol:
K30101B - Footprint:
Package_DIP:DIP-4_W7.62mm - 3D model: DIP-4 (KiCad packages3D, STEP)
- 3D model files:
k30101b-etched.step/k30101b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);k30101b.step/k30101b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Cosmo Electronics datasheet (11 pp, sha256
805d703604762b2a, retrieved 2026-10-16, 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).