MOC8100M Equivalent & Substitute Parts

Part Overview

The MOC8100M is an optoisolator transistor with base output manufactured by onsemi, designed for high-voltage isolation applications. It features 7500Vpk isolation voltage in a 6-DIP through-hole package. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing system support, maintenance, and new design implementations where this isolation topology is required.

Substiute Parts

MOC8100M

onsemiIn Stock: 1936MOC8100M Datasheet

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MCT5210M

onsemiIn Stock: 9733MCT5210M Datasheet

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MOC8100

Isocom Components 2004 LTDIn Stock: 1419MOC8100 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the MOC8100M is determined by the following critical parameters:

• Package compatibility: 6-DIP (0.300", 7.62mm) through-hole form factor
• Output configuration: Transistor or Darlington with base output
• Isolation voltage: Minimum 4170Vrms or equivalent peak voltage
• Maximum output voltage: 30V
• Input type: DC
• Operating temperature range: Must support the application's thermal requirements
• Mounting type: Through-hole

The substitute parts listed below meet these core electrical and mechanical requirements, though individual parameter values may differ within acceptable ranges for the optoisolator category.

Parameter Comparison

Engineering Selection Recommendations

MCT5210M is an active product from onsemi with ROHS3 compliance. It provides 4170Vrms isolation voltage, which is lower than the MOC8100M's 7500Vpk specification. Selection of this substitute requires confirmation that the application's isolation voltage requirement does not exceed 4170Vrms. The MCT5210M offers improved current transfer ratio (70% @ 3mA) and faster turn-off time (400ns), with lower Vce saturation (400mV). Operating temperature range is -40°C ~ 100°C, which is narrower than the MOC8100M.

MOC8100 is an active product from Isocom Components 2004 LTD with ROHS3 compliance. It provides 5300Vrms isolation voltage and maintains the same output voltage maximum (30V) and Vce saturation (500mV) as the MOC8100M. The output configuration is Darlington with base rather than transistor with base. Operating temperature range matches the MOC8100M (-55°C ~ 100°C). This part is suitable for applications where the lower isolation voltage of 5300Vrms is acceptable and Darlington output characteristics are compatible with the circuit design.

Frequently Asked Questions (FAQ)

Q: Can MCT5210M directly replace MOC8100M in all applications?

A: MCT5210M has lower isolation voltage (4170Vrms vs. 7500Vpk). Direct replacement is only valid if the application's isolation voltage requirement does not exceed 4170Vrms. Circuit validation is necessary to confirm compatibility with the different current transfer ratio and switching characteristics.

Q: What is the key difference between MOC8100 and MOC8100M?

A: MOC8100 uses Darlington output configuration, while MOC8100M uses transistor with base output. Both maintain 30V maximum output voltage and 500mV Vce saturation. The Darlington configuration in MOC8100 provides higher current gain but different switching behavior.

Q: Are all substitute parts available in the same 6-DIP package?

A: Yes. MCT5210M and MOC8100 are both available in 6-DIP (0.300", 7.62mm) through-hole packages, matching the MOC8100M's physical form factor and PCB mounting requirements.

Q: Which substitute part has the best product availability?

A: MCT5210M has the highest inventory (9670 Pcs), followed by MOC8100 (1330 Pcs). Both are active products with ongoing supply.

Q: What compliance certifications apply to the substitute parts?

A: MCT5210M carries ROHS3 compliance. MOC8100 carries ROHS3 compliance. Both parts are REACH Unaffected and classified as EAR99 for export control purposes.