4N35-X006 Equivalent & Substitute Parts

Part Overview

The 4N35-X006 is an optoisolator transistor with base output manufactured by Vishay Semiconductor Opto Division. This single-channel device provides 5000Vrms isolation in a 6-DIP through-hole package and is classified as Active product status. The 4N35-X006 is used in applications requiring galvanic isolation between input and output circuits with high voltage isolation ratings. Equivalent and substitute parts are identified based on matching electrical characteristics, package compatibility, and isolation voltage specifications to ensure functional interchangeability in circuit designs.

Key Parameters

Parameter	4N35-X006 Specification
Manufacturer	Vishay Semiconductor Opto Division
Number of Channels	1
Voltage - Isolation	5000Vrms
Current Transfer Ratio (Min)	100% @ 10mA
Turn On / Turn Off Time (Typ)	10µs, 10µs
Output Type	Transistor with Base
Voltage - Output (Max)	30V
Current - Output / Channel	50mA
Voltage - Forward (Vf) (Typ)	1.2V
Current - DC Forward (If) (Max)	60mA
Operating Temperature	-55°C ~ 100°C
Package / Case	6-DIP (0.400", 10.16mm)
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the 4N35-X006 are grouped based on the following critical parameters that determine functional interchangeability:

Primary Matching Criteria:

Package / Case: 6-DIP through-hole configuration
Output Type: Transistor with Base
Input Type: DC
Number of Channels: 1
Mounting Type: Through Hole
RoHS Status: ROHS3 Compliant

Secondary Electrical Criteria:

Voltage - Isolation: Minimum 4170Vrms (acceptable for applications designed for 5000Vrms isolation)
Current Transfer Ratio (Min): Minimum 10% @ 10mA
Operating Temperature Range: -55°C to 100°C or compatible subset
Voltage - Output (Max): 30V
Current - Output / Channel: 50mA

Substitutes are divided into two categories: parametric equivalents from the same manufacturer (Vishay) and manufacturer-recommended alternatives from other suppliers (Isocom Components, onsemi) that meet the electrical and mechanical requirements.

Parameter Comparison

Parameter	4N35-X006	4N35-X016	4N25XG	4N26M	4N27XG	4N28XG	4N35G	4N35XG	4N36XG	4N37M	4N37XG
Manufacturer	Vishay	Vishay	Isocom	onsemi	Isocom	Isocom	Isocom	Isocom	Isocom	onsemi	Isocom
Number of Channels	1	1	1	1	1	1	1	1	1	1	1
Voltage - Isolation	5000Vrms	5000Vrms	7.5Vpk	4170Vrms	7.5Vpk	7.5Vpk	5300Vrms	7.5Vpk	7.5Vpk	4170Vrms	7.5Vpk
Current Transfer Ratio (Min)	100% @ 10mA	100% @ 10mA	20% @ 10mA	20% @ 10mA	10% @ 10mA	10% @ 10mA	100% @ 10mA	100% @ 10mA	100% @ 10mA	100% @ 10mA	100% @ 10mA
Turn On / Turn Off Time (Typ)	10µs, 10µs	10µs, 10µs	—	2µs, 2µs	—	—	—	—	—	2µs, 2µs	—
Rise / Fall Time (Typ)	—	—	2µs, 2µs	—	2µs, 2µs	2µs, 2µs	2µs, 2µs	2µs, 2µs	2µs, 2µs	—	2µs, 2µs
Output Type	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base
Voltage - Output (Max)	30V	30V	30V	30V	30V	30V	—	30V	30V	30V	30V
Current - Output / Channel	50mA	50mA	50mA	—	50mA	50mA	—	50mA	50mA	—	50mA
Voltage - Forward (Vf) (Typ)	1.2V	1.2V	1.2V	1.18V	1.2V	1.2V	1.3V	1.2V	1.2V	1.18V	1.2V
Current - DC Forward (If) (Max)	60mA	60mA	60mA	60mA	60mA	60mA	—	—	—	60mA	—
Vce Saturation (Max)	—	—	500mV	500mV	500mV	500mV	300mV	300mV	300mV	300mV	300mV
Operating Temperature	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-40°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-40°C ~ 100°C	-55°C ~ 100°C
Package / Case	6-DIP (0.400", 10.16mm)	6-DIP (0.400", 10.16mm)	6-DIP (0.400", 10.16mm)	6-DIP (0.300", 7.62mm)	6-DIP (0.400", 10.16mm)	6-DIP (0.400", 10.16mm)	6-DIP (0.400", 10.16mm)	6-DIP (0.400", 10.16mm)	6-DIP (0.400", 10.16mm)	6-DIP (0.300", 7.62mm)	6-DIP (0.400", 10.16mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Parametric Equivalent: The 4N35-X016 from Vishay Semiconductor Opto Division is a direct parametric equivalent to the 4N35-X006. Both parts share identical electrical specifications, isolation voltage rating of 5000Vrms, current transfer ratio of 100% @ 10mA, and package configuration. This part is recommended as the primary substitute when 4N35-X006 availability is limited.

High Current Transfer Ratio Alternatives: Parts 4N35G, 4N35XG, 4N36XG, and 4N37XG maintain the 100% @ 10mA current transfer ratio specification. Among these, 4N35XG and 4N36XG from Isocom Components are pin-compatible with the 4N35-X006 in the standard 6-DIP (0.400", 10.16mm) package. The 4N37M from onsemi also maintains 100% current transfer ratio but uses a narrower 6-DIP (0.300", 7.62mm) package, which may require PCB layout verification for through-hole mounting compatibility.

Lower Current Transfer Ratio Alternatives: Parts 4N25XG, 4N26M, 4N27XG, 4N28XG, and 4N37XG provide current transfer ratios of 20% or 10% @ 10mA. These parts are suitable for applications where lower current transfer ratios are acceptable. The 4N26M and 4N37M from onsemi operate within a narrower temperature range (-40°C to 100°C) compared to the 4N35-X006 (-55°C to 100°C).

Package Compatibility Consideration: The 4N26M and 4N37M use a 6-DIP (0.300", 7.62mm) package, which differs from the standard 6-DIP (0.400", 10.16mm) package of the 4N35-X006. PCB footprint verification is required before substitution to ensure mechanical fit in through-hole mounting applications.

Compliance and Regulatory Status: All substitute parts listed are ROHS3 compliant and maintain Active product status, ensuring long-term availability and regulatory compliance for new designs and production environments.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 4N35-X006 with the 4N35-X016? A: Yes. The 4N35-X016 is a direct parametric equivalent with identical electrical specifications, isolation voltage, current transfer ratio, and package configuration. No circuit modifications are required.

Q: What is the difference between the 4N35-X006 and parts with lower current transfer ratios like the 4N27XG? A: The 4N35-X006 provides 100% current transfer ratio @ 10mA, while the 4N27XG provides 10% @ 10mA. The 4N35-X006 delivers higher output current for the same input current. Selection depends on circuit requirements for output current drive capability.

Q: Are the 4N26M and 4N37M suitable substitutes for the 4N35-X006? A: The 4N26M and 4N37M are electrically compatible alternatives with 100% current transfer ratio and similar output specifications. However, they use a narrower 6-DIP (0.300", 7.62mm) package instead of the standard 6-DIP (0.400", 10.16mm) package. PCB footprint compatibility must be verified before substitution. Additionally, these parts operate within a narrower temperature range (-40°C to 100°C) versus the 4N35-X006 (-55°C to 100°C).

Q: What isolation voltage specifications are available among substitute parts? A: The 4N35-X006 provides 5000Vrms isolation. Substitute parts offer isolation ratings of 4170Vrms (4N26M, 4N37M), 5300Vrms (4N35G), or 7.5Vpk (4N25XG, 4N27XG, 4N28XG, 4N35XG, 4N36XG, 4N37XG). Selection should match or exceed the isolation voltage requirement of the application.

Q: Are all substitute parts RoHS compliant? A: Yes. All substitute parts listed are ROHS3 compliant and suitable for applications requiring RoHS compliance.

Q: Which substitute part offers the best direct replacement for through-hole PCB mounting? A: The 4N35-X016, 4N35XG, 4N36XG, 4N27XG, 4N28XG, and 4N25XG all use the standard 6-DIP (0.400", 10.16mm) package and are directly compatible with PCB footprints designed for the 4N35-X006. Among these, the 4N35-X016 is the closest parametric match.

Q: What is the significance of the turn-on and turn-off time specifications? A: The 4N35-X006 specifies 10µs turn-on and turn-off times. Substitute parts from Isocom Components do not specify these timing parameters but provide rise and fall times of 2µs. Parts from onsemi (4N26M, 4N37M) specify 2µs turn-on and turn-off times. For timing-critical applications, these differences should be evaluated against circuit requirements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message