4N35S Equivalent & Substitute Parts

Part Overview

The 4N35S is an optoisolator transistor with base output manufactured by Lite-On Inc., designed for high-voltage isolation applications requiring 3550Vrms isolation rating. This component integrates a single-channel optoisolator with transistor output and base connection in a 6-SMD surface mount package. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical and mechanical parameters are required due to inventory availability, packaging format preferences, or supply chain optimization.

Substiute Parts

4N35S

Lite-On Inc.In Stock: 30364N35S Datasheet

Current PartRFQ

4N35-500E

Broadcom LimitedIn Stock: 15584N35-500E Datasheet

MFR RecommendedRFQ

4N35-560E

Broadcom LimitedIn Stock: 59794N35-560E Datasheet

MFR RecommendedRFQ

4N35-300E

Broadcom LimitedIn Stock: 31654N35-300E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 4N35S are qualified based on strict electrical and mechanical parameter equivalence. All identified substitutes maintain identical specifications across the following critical parameters: isolation voltage (3550Vrms), channel count (1), current transfer ratio minimum (100% @ 10mA), rise/fall time (3µs, 3µs), output type (transistor with base), maximum output voltage (30V), output current per channel (100mA), forward voltage (1.2V), maximum forward current (60mA), saturation voltage (300mV), operating temperature range (-55°C ~ 100°C), mounting type (surface mount), and package configuration (6-SMD, Gull Wing).

Substitutes are differentiated by packaging format (Cut Tape & Digi-Reel, Tape & Reel, or Tube) and manufacturer (Broadcom Limited vs. Lite-On Inc.). All substitute parts share the same base product number (4N35) and maintain full compliance with RoHS3 and REACH requirements.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain full electrical and mechanical equivalence to the 4N35S. Selection between the main part and substitutes should be based on packaging format requirements and supply chain considerations.

The 4N35-500E (Broadcom) in Cut Tape & Digi-Reel format is designated as the manufacturer-recommended substitute, suitable for applications requiring flexible packaging options.

The 4N35-560E (Broadcom) in Tape & Reel format is designated as the manufacturer-recommended substitute for high-volume production environments requiring automated assembly processes.

The 4N35-300E (Broadcom) in Tube packaging is classified as a parametric equivalent, maintaining identical electrical specifications and tube packaging format matching the original 4N35S.

All substitute parts carry active product status with full RoHS3 compliance and REACH unaffected designation, ensuring regulatory compliance equivalent to the original component.

Frequently Asked Questions (FAQ)

Q: What determines if a part can substitute for the 4N35S?

A: Substitute parts must maintain identical electrical parameters including isolation voltage (3550Vrms), current transfer ratio (100% @ 10mA), output voltage and current ratings (30V, 100mA), timing characteristics (3µs rise/fall time), and operating temperature range (-55°C ~ 100°C). The package configuration (6-SMD, Gull Wing) and mounting type (surface mount) must also remain unchanged.

Q: Are there differences between the Lite-On 4N35S and Broadcom 4N35 variants?

A: The electrical and mechanical specifications are identical across all variants. Differences exist only in packaging format (Tube, Cut Tape & Digi-Reel, or Tape & Reel) and manufacturer source. All variants share the same base product number (4N35) and maintain equivalent performance characteristics.

Q: Can I use 4N35-500E, 4N35-560E, or 4N35-300E interchangeably with 4N35S?

A: Yes, all three Broadcom variants are electrically and mechanically equivalent to the 4N35S. Selection should be based on packaging format requirements. The 4N35S and 4N35-300E both use Tube packaging. The 4N35-500E uses Cut Tape & Digi-Reel format. The 4N35-560E uses Tape & Reel format for high-volume applications.

Q: Do all substitute parts meet the same compliance standards?

A: Yes. All substitute parts are RoHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the compliance profile of the original 4N35S.

Q: What is the difference between Cut Tape & Digi-Reel and Tape & Reel packaging?

A: Cut Tape & Digi-Reel format (4N35-500E) provides flexible packaging suitable for both manual and automated assembly. Tape & Reel format (4N35-560E) is optimized for high-volume automated production environments. Tube format (4N35S, 4N35-300E) is suitable for lower-volume applications and manual assembly processes.