component
MTLP521-1GB
Public Made by Adomby adom
MSKSEMI 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
markdownMTLP521-1GB
MSKSEMI · Transistor, Photovoltaic Output Optoisolators · DIP-4
MTLP521-1GB from MSKSEMI, in a DIP-4. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | A | input | LED anode (input); forward current IF max 50 mA, forward voltage VF 1.0-1.3 V at IF=10 mA, reverse voltage VR max 6 V. |
| 2 | K | input | LED cathode (input); reverse leakage current IR max 10 µA at VR=5 V. |
| 3 | E | output | Phototransistor emitter (output); emitter-collector breakdown voltage BVECO ≥ 7 V (IE=10 µA, IF=0). |
| 4 | C | output | Phototransistor collector (output); collector-emitter breakdown voltage BVCEO ≥ 80 V (IC=0.1 mA, IF=0), IC max 50 mA, PC max 150 mW, CTR 100-600% (GB grade, IF=5 mA, VCE=5 V). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | MSKSEMI |
| Package | DIP-4 |
| Category | Optoisolators |
| Pins | 4 |
CAD (KiCad official)
- Symbol:
MTLP521-1GB - Footprint:
Package_DIP:DIP-4_W7.62mm - 3D model: DIP-4 (KiCad packages3D, STEP)
- 3D model files:
mtlp521-1gb-etched.step/mtlp521-1gb-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mtlp521-1gb.step/mtlp521-1gb.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: MSKSEMI datasheet (8 pp, sha256
bd1c5f5caa7b48a4, retrieved 2026-09-21, 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 0.2, primaryclaude-sonnet-4-6(text+vision), consensusclaude-opus-4-7(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).