4N36TM Optoisolator - Equivalent & Substitute Parts

Part Overview

The 4N36TM is an optoisolator transistor with base output manufactured by onsemi, designed for high-voltage isolation applications. This component features a 7500Vpk isolation rating and is housed in a 6-DIP through-hole package. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring similar functionality.

Substiute Parts

4N36TM

onsemiIn Stock: 31784N36TM Datasheet

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4N36G

Isocom Components 2004 LTDIn Stock: 11724N36G Datasheet

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4N36M

Fairchild SemiconductorIn Stock: 159924N36M Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 4N36TM are selected based on the following critical parameters that define functional equivalence:

• Package compatibility: 6-DIP (0.400", 10.16mm) through-hole mounting
• Output configuration: Transistor with base output
• Isolation voltage: Minimum 5000Vpk or equivalent isolation rating
• Current transfer ratio: Minimum 100% @ 10mA
• Vce saturation: Maximum 300mV
• Input type: DC
• Number of channels: Single channel

The 4N36M and 4N36G meet these core substitution criteria while maintaining functional compatibility with the 4N36TM in isolation-based switching applications.

Parameter Comparison

Engineering Selection Recommendations

4N36G (Isocom Components 2004 LTD): Active product status with ROHS3 compliance. Maintains identical current transfer ratio and saturation characteristics. Operating temperature range extends to -55°C. Note: Isolation voltage specification differs from main part (7.5Vpk vs 7500Vpk); verify application requirements before selection.

4N36M (Fairchild Semiconductor): Active product status with extended operating temperature range (-55°C ~ 110°C). Supports higher maximum output voltage (80V vs 30V). Isolation rating specified as 5000Vrms. Suitable for applications requiring broader temperature operation or higher output voltage capability.

Both substitutes maintain the 6-DIP package format and transistor-with-base output configuration, enabling direct circuit board replacement in through-hole designs.

Frequently Asked Questions (FAQ)

Q: Can the 4N36G directly replace the 4N36TM?

A: The 4N36G shares identical package, output type, current transfer ratio, and saturation characteristics. However, the isolation voltage specification differs significantly (7.5Vpk vs 7500Vpk). Application-specific isolation requirements must be verified before substitution.

Q: What is the primary difference between the 4N36M and 4N36G?

A: The 4N36M supports higher maximum output voltage (80V vs 30V) and extended operating temperature range (-55°C ~ 110°C vs -55°C ~ 100°C). The 4N36G maintains the 30V output limit of the original 4N36TM. Selection depends on circuit voltage and thermal requirements.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the 6-DIP (0.400", 10.16mm) through-hole package with identical pinout for transistor-with-base output configuration, enabling direct board-level substitution.

Q: What compliance certifications apply to the substitute parts?

A: The 4N36G carries ROHS3 compliance. Both substitutes are REACH Unaffected and classified as EAR99 for export control purposes.

Q: Which substitute is recommended for new designs?

A: Both 4N36G and 4N36M are active products. Selection should be based on specific isolation voltage, output voltage, and operating temperature requirements of the target application.