component
SFH6343T
Public Made by Adomby adom
Vishay Intertech Transistor, Photovoltaic Output Optoisolators, SOIC-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
markdownSFH6343T
Vishay Intertech · Transistor, Photovoltaic Output Optoisolators · SOIC-8
SFH6343T from Vishay Intertech, in a SOIC-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 | NC | unconnected | Not connected in the pin diagram; the datasheet states no function for this pin, so leave it unconnected. |
| 2 | A | passive | LED anode of the GaAlAs infrared emitting diode; the datasheet limits DC forward current to 25 mA and reverse voltage to 3 V. |
| 3 | C | passive | LED cathode of the GaAlAs infrared emitting diode; the datasheet limits DC forward current to 25 mA and reverse voltage to 3 V. |
| 4 | NC | unconnected | Not connected in the pin diagram; the datasheet states no function for this pin, so leave it unconnected. |
| 5 | E | passive | Emitter of the integrated output transistor; the datasheet recommends a 0.1 µF bypass capacitor between pins 5 and 8. |
| 6 | C | output | Open-collector output; the datasheet limits output voltage to 25 V and output current to 8 mA. |
| 7 | NC | unconnected | No base connection on the SFH6343T (ordering table: NO BASE CONNECTION); the datasheet states no function for this pin, so leave it unconnected. |
| 8 | VCC | power_in | Supply voltage pin with a limit of -0.5 to 30 V; a 0.1 µF bypass capacitor between pins 5 and 8 is recommended. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Vishay Intertech |
| Package | SOIC-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 |
|---|---|---|---|---|---|---|---|
| Reverse voltage | VR | 3 | V | 1 | |||
| DC forward current | IF | 25 | mA | 1 | |||
| Surge forward current | IFSM | 1 | A | tp ≤ 1 μs, 300 pulses/s | 1 | ||
| Power dissipation (input) | Pdiss | 45 | mW | Tamb ≤ 70 °C | 1 | ||
| Supply voltage | VS | -0.5 | 30 | V | 2 | ||
| Output voltage | VO | -0.5 | 25 | V | 2 | ||
| Output current | IO | 8 | mA | 2 | |||
| Power dissipation (output) | Pdiss | 100 | mW | Tamb ≤ 70 °C | 2 | ||
| Isolation test voltage | VISO | 4000 | VRMS | between emitter and detector | 2 | ||
| Storage temperature range | Tstg | -55 | 150 | °C | 2 | ||
| Ambient temperature range | Tamb | -55 | 100 | °C | 2 | ||
| Junction temperature | Tj | 100 | °C | 2 | |||
| Soldering temperature | 260 | °C | max. 10 s, dip soldering distance to seating plane ≥ 1.5 mm | 2 | |||
| Creepage distance | 4 | mm | 2 | ||||
| Clearance distance | 4 | mm | 2 | ||||
| Forward voltage | VF | 1.6 | 1.8 | V | IF = 16 mA, 25 °C | 2 | |
| Forward voltage | VF | 1.6 | 1.9 | V | IF = 16 mA | 2 | |
| Reverse current | IR | 0.5 | 10 | μA | VR = 3 V | 2 | |
| Logic high supply current | ICCH | 0.001 | 1 | μA | IF = 0 mA, VO = open, VCC = 15 V, 25 °C | 2 | |
| Logic high supply current | ICCH | 0.001 | 2 | μA | IF = 0 mA, VO = open, VCC = 15 V | 2 | |
| Logic low output voltage | VOL | 0.15 | 0.5 | V | IF = 16 mA, VCC = 4.5 V, IO = 2.4 mA | 2 | |
| Logic high output current | IOH | 0.003 | 0.5 | μA | IF = 0 mA, VO = VCC = 5.5 V, 25 °C | 2 | |
| Logic high output current | IOH | 0.01 | 1 | μA | IF = 0 mA, VO = VCC = 15 V, 25 °C | 2 | |
| Current transfer ratio | CTR | 19 | 35 | 50 | % | VO = 0.4 V, IF = 16 mA, VCC = 4.5 V, 25 °C | 3 |
| Current transfer ratio | CTR | 15 | 36 | % | VO = 0.5 V, IF = 16 mA, VCC = 4.5 V | 3 | |
| Propagation delay time to logic low at output | tPHL | 0.25 | 1 | μs | RL = 1.9 KΩ | 3 | |
| Propagation delay time to logic high at output | tPLH | 0.5 | 1 | μs | RL = 1.9 KΩ | 3 | |
| Common mode transient immunity at logic high level output | /CMH/ | 15 | 30 | kV/μs | RL = 1.9 kΩ, IF = 0 mA, VCM = 1500 VP-P | 4 | |
| Common mode transient immunity at logic low level output | /CML/ | 15 | 30 | kV/μs | RL = 1.9 kΩ, IF = 16 mA, VCM = 1500 VP-P | 4 | |
| Temperature coefficient of forward voltage | ΔVF/ΔT | -1.7 | mW/°C | IF = 16 mA | 2 | ||
| Logic low supply current | ICCL | 200 | μA | IF = 16 mA, VO = open, VCC = 15 V | 2 | ||
| Logic high output current | IOH | 50 | μA | IF = 0 mA, VO = VCC = 15 V | 2 | ||
| Input capacitance | CIN | 75 | pF | f = 1 MHz, VF = 0 V | 2 | ||
| Capacitance (input to output) | CIO | 0.4 | pF | f = 1 MHz | 3 |
CAD (KiCad official)
- Symbol:
SFH6343T - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
sfh6343t-etched.step/sfh6343t-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sfh6343t.step/sfh6343t.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Vishay Intertech datasheet (7 pp, sha256
6517034e5be32edd, retrieved 2026-10-18, 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).