Specifications
| Type | Description |
|---|---|
| Part Number | 4N35 |
| Manufacturer | Vishay |
| Product Type | Phototransistor Optocoupler |
| Category | Optocouplers |
| Package / Case | DIP-6 |
| Isolation Test Voltage | 5000 V RMS |
| Input Forward Current | 50 mA |
| Input Reverse Voltage | 6 V |
| Input Forward Voltage | 1.3 V typ; IF=10 mA |
| Collector Current | 50 mA |
| Collector-Emitter Breakdown Voltage | 70 V |
| DC Current Transfer Ratio | 100% min; VCE=10 V, IF=10 mA |
| Switching Time | 10 µs typ |
| Operating Temperature | -55 to +100°C |
| Datasheet Status | request_only |
Product Overview
The Vishay 4N35 is a phototransistor optocoupler. Its input side is specified with a forward voltage of 1.3 V typical at IF=10 mA. The output phototransistor section includes 30 V minimum collector-emitter breakdown voltage. Collector-emitter leakage is 5 nA typical at VCE=10 V.
Isolation parameters include 5000 V RMS isolation test voltage, at least 7 mm creepage and clearance. The device operates from -55°C to +100°C ambient.
Key Features
- 5000 V RMS isolation test voltage
- DIP-6 package
- Input LED rated for 50 mA forward current
- 6 V input reverse voltage rating
- 100% minimum DC current transfer ratio
- 10 µs typical switching time
- Creepage and clearance >= 7 mm
- 1e12 ohm isolation resistance at 25°C
- Operating range -55°C to +100°C
- 260°C soldering temperature capability
Typical Applications
- Isolated signal coupling
- Galvanic isolation interfaces
- Phototransistor output switching
- DIP-6 through-hole assemblies
Procurement Notes
When requesting a quote for 4N35, 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.
Related Technical Articles
FAQ
What type of device is the 4N35?
A Vishay phototransistor optocoupler in DIP-6 package with input LED and phototransistor output.
What isolation rating is specified?
5000 V RMS isolation test voltage, >= 7 mm creepage and clearance.
What current transfer ratio is listed?
100% minimum DC current transfer ratio at VCE=10 V and IF=10 mA.
What is the operating temperature range?
The device operates from -55°C to +100°C ambient.
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.