ProjectsPricingInsights

4N25SM AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

4N25SM product

4N25SM

Photovoltaic Output

OptocouplerSMTonsemi

The 4N25SM is a standard 6-pin SMT phototransistor optocoupler providing 4170 VACRMS isolation, ideal for general-purpose signal isolation in power and logic circuits.

Best for

  • Power supply regulation
  • Digital logic isolation
  • Microprocessor input interfacing

Avoid if

  • High-speed data communication requiring low propagation delay

Check before use

  • Thermal derating limits
  • Reflow soldering profile

Key specifications

Isolation Voltage
4170 VACRMS
Min CTR
20%
VCEO
30 V

Compliance & Environment

RoHS
ROHS3 Compliant
REACH
REACH Unaffected
MSL
1 (Unlimited)
ECCN
EAR99
HTSUS
8541.49.8000

Application

Power SuppliesDigital Logic

Datasheet

Fairchild-Semiconductor-company-11.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for 4N25SM: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

EDA Symbol
Schematic symbol for your EDA tool
Get Files
PCB Footprint
Land pattern for PCB layout
Get Files
3D Model
STEP file for mechanical design
Get Files
KiCad Library
Verified KiCad 8 symbol, footprint, and 3D model
Generate library

Login required · CAD models billed separately as an add-on

Where to Buy

Real-time and catalog pricing from verified distributors

Live prices updated on demand · Catalog (~) prices may differ

Alternative components

Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.

Design and risk insights

Questions & answers

The 4N25SM is a general-purpose optocoupler from onsemi, featuring a gallium arsenide infrared LED and a silicon phototransistor in a 6-pin SMT package.