Specifications
| Type | Description |
|---|---|
| Part Number | SFH620A |
| Manufacturer | Vishay |
| Product Type | Phototransistor Optocoupler |
| Category | Optocouplers |
| Package / Case | DIP-4 standard, DIP-4 400 mil option 6, SMD-4 option 7, SMD-4 option 9; 2.54 mm lead spacing; DIP standard 7.62 mm typ row spacing; option 6 10.16 mm typ row spacing; body 4.70 ± 0.15 mm x 6.60 ± 0.25 mm, height 5.10 mm max |
| Isolation Test Voltage | 5300 VRMS |
| Collector Emitter Voltage | 70 V |
| DC Forward Current | ±60 mA |
| Surge Forward Current | ±2.5 A |
| Input Power Dissipation | 100 mW |
| Collector Emitter Voltage | 70 V |
| Emitter Collector Voltage | 7 V |
| Collector Current | 50 mA |
| Peak Collector Current | 100 mA |
| Output Power Dissipation | 150 mW |
| Total Power Dissipation | 250 mW |
| Storage Temperature Range | -55 to +150 °C |
| Ambient Temperature Range | -55 to +100 °C |
| Junction Temperature | 100 °C |
| Soldering Temperature | 260 °C |
| Forward Voltage | typ 1.25 V, max 1.65 V |
| Input Capacitance | typ 50 pF |
| Input Thermal Resistance | typ 750 K/W |
| Collector Emitter Capacitance | typ 6.8 pF |
| Output Thermal Resistance | typ 500 °C/W |
| Collector Emitter Saturation Voltage | typ 0.25 V, max 0.4 V |
| Coupling Capacitance | typ 0.2 pF |
| Collector Emitter Leakage Current | typ 2 nA, max 50 nA |
| Collector Emitter Leakage Current | typ 5 nA, max 100 nA |
| Current Transfer Ratio | min 40%, max 125% |
| Current Transfer Ratio | min 63%, max 200% |
| Current Transfer Ratio | min 100%, max 320% |
| Current Transfer Ratio | min 13%, typ 30% |
| Current Transfer Ratio | min 22%, typ 45% |
| Current Transfer Ratio | min 34%, typ 70% |
| Turn On Time | typ 3 µs |
| Rise Time | typ 2 µs |
| Turn Off Time | typ 2.3 µs |
| Fall Time | typ 2 µs |
| Cut Off Frequency | typ 208 kHz |
| Climatic Classification | 55/115/21 |
| Pollution Degree | 2 |
| Comparative Tracking Index | 175 |
| Maximum Rated Withstanding Isolation Voltage | 4470 VRMS |
| Tested Withstanding Isolation Voltage | 5300 VRMS |
| Maximum Transient Isolation Voltage | 8000 Vpeak |
| Maximum Repetitive Peak Isolation Voltage | 890 Vpeak |
| Isolation Resistance | ≥10^12 Ω |
| Isolation Resistance | ≥10^11 Ω |
| Output Safety Power | 700 mW |
| Input Safety Current | 400 mA |
| Input Safety Temperature | 175 °C |
| Creepage Distance | ≥7 mm |
| Clearance Distance | ≥7 mm |
| Creepage Distance | ≥8 mm |
| Clearance Distance | ≥8 mm |
| Creepage Distance | ≥7 mm |
| Clearance Distance | ≥7 mm |
| Insulation Thickness | ≥0.4 mm |
| ESD Level | HBM class 2 |
| Floor Life | unlimited |
| Moisture Sensitivity Level | MSL 1 |
| Datasheet Status | request_only |
Product Overview
The Vishay SFH620A is an AC input phototransistor optocoupler in the LED category. Its input side is rated for ±60 mA DC forward current, ±2.5 A surge forward current for pulses up to 10 µs, and 100 mW input power dissipation at Tamb = 25°C. Forward voltage is specified as 1.25 V typical and 1.65 V maximum at IF = ±60 mA.
The output phototransistor is rated for 70 V VCEO, 7 V VECO, 50 mA collector current, 100 mA peak collector current for pulses up to 1 µs, and 150 mW output power dissipation. Electrical coupling data includes CTR ranges for -1, -2, and -3 bins, 0.25 V typical collector-emitter saturation voltage, 6.8 pF typical collector-emitter capacitance, and leakage limits by bin.
Package options include standard DIP-4, 400 mil DIP-4 option 6, and SMD-4 options 7 and 9. The device supports isolation-focused designs with 5300 VRMS tested isolation, 8000 Vpeak transient isolation, creepage and clearance distances from at least 7 mm to 8 mm depending on option, MSL 1 handling, and unlimited floor life under Tamb < 30°C and RH < 85%.
Key Features
- AC input phototransistor optocoupler structure
- 5300 VRMS tested withstanding isolation voltage
- 70 V collector-emitter voltage rating
- CTR bins from 40% to 320% at ±10 mA
- Typical 3 µs turn-on time with 75 Ω load
- Typical 208 kHz cut-off frequency with 75 Ω load
- DIP-4 and SMD-4 package options
- Creepage and clearance distances up to ≥8 mm
- MSL 1 moisture sensitivity classification
- HBM class 2 ESD handling level
Typical Applications
- AC input isolation
- Phototransistor output switching
- Low-frequency signal coupling
- Safety insulation barriers
- DIP-4 through-hole assemblies
- SMD-4 surface-mount assemblies
- Designs requiring 5300 VRMS tested isolation
Procurement Notes
When requesting a quote for SFH620A, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For optocoupler and isolation sourcing, isolation voltage, CTR or output type, package, creepage distance, temperature grade, agency approvals and soldering conditions should be verified before approval.
FAQ
What type of device is the SFH620A?
The SFH620A is an AC input phototransistor optocoupler from Vishay. It is listed in the LED category and combines an AC input with a phototransistor output in DIP-4 and SMD-4 package options.
What isolation ratings are specified for SFH620A?
The extracted datasheet facts list 5300 VRMS tested withstanding isolation voltage for 1 s, 4470 VRMS maximum rated withstanding isolation voltage for 1 min, and 8000 Vpeak maximum transient isolation voltage.
Which package options are available for this part?
SFH620A package options include standard DIP-4, DIP-4 400 mil option 6, SMD-4 option 7, and SMD-4 option 9. The body is specified as 4.70 ± 0.15 mm by 6.60 ± 0.25 mm.
What CTR ranges are listed for SFH620A bins?
At VCE = 5 V and IF = ±10 mA, the -1 bin is 40% to 125%, the -2 bin is 63% to 200%, and the -3 bin is 100% to 320%.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 28, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.