4N36300 Optoisolator Equivalent & Substitute Parts

Part Overview

The 4N36300 is an optoisolator transistor with base output manufactured by onsemi, rated for 5300Vrms isolation voltage in a 6-DIP package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs. The 4N36300 provides galvanic isolation with transistor output capability suitable for DC input applications requiring high voltage isolation in through-hole mounting configurations.

Substiute Parts

4N36300

onsemiIn Stock: 12574N36300 Datasheet

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4N36

Texas InstrumentsIn Stock: 1004684N36 Datasheet

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4N36-X000

Vishay Semiconductor Opto DivisionIn Stock: 12264N36-X000 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the 4N36300 is determined by the following critical parameters:

• Isolation Voltage: Minimum 5000Vrms (the 4N36300 specifies 5300Vrms)
• Output Configuration: Transistor with Base output
• Number of Channels: Single channel
• Package Type: 6-DIP (0.300", 7.62mm)
• Mounting: Through Hole
• Input Type: DC
• Operating Temperature Range: -55°C ~ 100°C minimum
• Current Transfer Ratio: Minimum 100% @ 10mA

The substitute parts 4N36 (Texas Instruments) and 4N36-X000 (Vishay Semiconductor Opto Division) meet these core substitution criteria. Both maintain the same package footprint, isolation voltage specification (5000Vrms), output transistor configuration, and operating temperature range. Differences in turn-on/turn-off time, forward voltage, and maximum forward current are secondary parameters that do not prevent functional substitution in applications designed for the 4N36300.

Parameter Comparison

Engineering Selection Recommendations

4N36 (Texas Instruments): This part is classified as Active product status, ensuring continued availability and manufacturer support. However, it carries RoHS non-compliant status and is REACH Affected. The Texas Instruments 4N36 features slower switching times (10µs turn-on/off versus 2µs for the 4N36300) and reduced maximum forward current (50mA versus 100mA). Selection of this substitute is appropriate for applications where the slower switching performance is acceptable and RoHS compliance is not required.

4N36-X000 (Vishay Semiconductor Opto Division): This part is classified as Active product status with ROHS3 Compliant certification, making it suitable for applications requiring RoHS compliance. The Vishay 4N36-X000 also features 10µs switching times and supports 60mA maximum forward current. The forward voltage specification (1.2V typical) is closer to the original 4N36300 (1.18V) compared to the Texas Instruments alternative. This part is supplied in Tube packaging.

Both substitute parts maintain the critical isolation voltage, output configuration, and package compatibility required for direct substitution in 6-DIP through-hole applications. Selection between them depends on compliance requirements and acceptable switching performance parameters for the target application.

Frequently Asked Questions (FAQ)

Q: Can the 4N36 or 4N36-X000 be used as direct pin-for-pin replacements for the 4N36300?

A: Yes. Both substitute parts share identical 6-DIP package pinouts and through-hole mounting specifications. No PCB layout modifications are required for physical substitution.

Q: What is the significance of the isolation voltage difference between 5300Vrms (4N36300) and 5000Vrms (substitutes)?

A: The 4N36300 provides 300Vrms higher isolation rating. Applications designed for 5300Vrms isolation cannot be downrated to 5000Vrms without circuit redesign. Conversely, applications requiring only 5000Vrms isolation can safely use the substitute parts.

Q: How do the switching time differences affect circuit performance?

A: The 4N36300 specifies 2µs turn-on and turn-off times, while both substitutes specify 10µs. In high-frequency switching applications, this 5x difference may impact signal fidelity and timing margins. Applications with switching frequencies below 50kHz typically tolerate this difference without performance degradation.

Q: Are there compliance or regulatory differences between the substitute options?

A: The Vishay 4N36-X000 is ROHS3 Compliant, while the Texas Instruments 4N36 is RoHS non-compliant. For applications subject to RoHS regulations, the Vishay part is the appropriate selection. The Texas Instruments part is REACH Affected, while the Vishay part does not specify REACH status in the provided data.

Q: What is the impact of reduced maximum forward current in the substitutes?

A: The 4N36300 supports 100mA maximum forward current, while the Texas Instruments 4N36 supports 50mA and the Vishay 4N36-X000 supports 60mA. Applications requiring input LED currents above 60mA cannot use these substitutes without circuit modification.

Q: Does packaging format (Tube versus standard packaging) affect substitution?

A: Packaging format affects supply chain and handling procedures but does not impact electrical or mechanical compatibility. The Vishay 4N36-X000 is supplied in Tube packaging, which may influence procurement and assembly processes but does not affect circuit performance.