Equivalent & Substitute Parts for 4N35-V Optoisolator

Part Overview

The 4N35-V is an optoisolator transistor with base output manufactured by Everlight Electronics Co Ltd. This component provides 5000Vrms isolation with a single channel configuration in a 6-DIP through-hole package. The device is actively produced and ROHS3 compliant, making it suitable for industrial and consumer applications requiring galvanic isolation.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across critical isolation, switching, and packaging parameters. The 4N35-V remains in active production; substitute identification serves applications requiring alternative sourcing or inventory management.

Substiute Parts

4N35-V

Everlight Electronics Co LtdIn Stock: 21114N35-V Datasheet

Current PartRFQ

4N35-X001

Vishay Semiconductor Opto DivisionIn Stock: 27864N35-X001 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 4N35-V is determined by the following critical parameters:

Isolation Voltage: 5000Vrms isolation is the primary functional requirement. Substitute parts must maintain this specification.

Channel Configuration: Single channel (1 channel) is mandatory for direct substitution.

Output Configuration: Transistor with base output is required for circuit compatibility.

Input Type: DC input specification must be maintained.

Package and Mounting: 6-DIP through-hole package with 0.300" (7.62mm) pitch ensures mechanical and board-level compatibility.

Electrical Performance: Current transfer ratio minimum of 100% @ 10mA, forward voltage of 1.2V typical, and forward current maximum of 60mA establish the operational envelope.

Compliance: ROHS3 compliance and MSL Level 1 are required for modern manufacturing environments.

The 4N35-X001 meets all critical substitution criteria within these parameters.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (4N35-V): Use the 4N35-V when the application requires maximum output voltage rating of 80V and operating temperature range extending to 110°C. This part is actively produced by Everlight Electronics and maintains full ROHS3 compliance with MSL Level 1 rating.

Substitute Selection (4N35-X001): The 4N35-X001 from Vishay Semiconductor Opto Division is suitable for applications where output voltage does not exceed 30V and operating temperature remains within -55°C to 100°C. This substitute maintains equivalent isolation voltage, channel configuration, current transfer ratio, and switching characteristics. Both parts are actively produced and ROHS3 compliant.

Compliance Considerations: Both parts meet ROHS3 requirements and carry MSL Level 1 rating, indicating compatibility with standard manufacturing processes without moisture sensitivity constraints.

Inventory and Sourcing: The 4N35-X001 currently has higher inventory availability (2715 Pcs) compared to the 4N35-V (2100 Pcs), which may influence sourcing decisions for high-volume applications.

Frequently Asked Questions (FAQ)

Q: Can the 4N35-X001 replace the 4N35-V in all applications?

A: The 4N35-X001 is suitable for substitution only when the application output voltage requirement does not exceed 30V and the operating temperature range remains within -55°C to 100°C. If the circuit requires output voltages up to 80V or operation at temperatures above 100°C, the 4N35-V is required.

Q: What is the significance of the 5000Vrms isolation voltage?

A: The 5000Vrms isolation voltage specifies the maximum voltage difference that can be safely applied between the input and output circuits without breakdown. Both the 4N35-V and 4N35-X001 maintain this specification, making them functionally equivalent for isolation requirements.

Q: Are the switching characteristics identical between these parts?

A: Both parts exhibit equivalent turn-on time of 10µs. The 4N35-V has a turn-off time of 9µs while the 4N35-X001 has 10µs. This minor difference does not affect compatibility in standard switching applications.

Q: What does the 6-DIP package specification mean?

A: The 6-DIP (Dual In-line Package) with 0.300" (7.62mm) pitch indicates a through-hole component with 6 pins arranged in two parallel rows. Both parts use identical packaging, ensuring direct mechanical compatibility on printed circuit boards.

Q: Are both parts RoHS compliant?

A: Yes, both the 4N35-V and 4N35-X001 are ROHS3 compliant and carry MSL Level 1 rating, indicating they meet current environmental and manufacturing standards without moisture sensitivity constraints.

Q: What is the Current Transfer Ratio and why is it important?

A: The Current Transfer Ratio of 100% @ 10mA indicates that for every 10mA of input current, the output transistor conducts with 100% efficiency. Both parts maintain this specification, ensuring equivalent optical coupling performance.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes, the identical 6-DIP package and through-hole mounting type allow direct pin-for-pin substitution on the same PCB. However, circuit design must account for the output voltage and temperature rating differences noted in the parameter comparison table.