3C92CTX Optoisolator Equivalent & Substitute Parts

Part Overview

The 3C92CTX is an optoisolator with transistor output manufactured by TT Electronics/Optek Technology. This component provides 1000VDC isolation with a single channel configuration in a TO-72-4 metal can package. The device is currently active in production with 857 units in stock. Equivalent parts are identified when identical electrical specifications and mechanical compatibility are maintained across isolation voltage, current transfer ratio, switching characteristics, and package form factor.

Substiute Parts

3C92CTX

TT Electronics/Optek TechnologyIn Stock: 9273C92CTX Datasheet

Current PartRFQ

3C91C

TT Electronics/Optek TechnologyIn Stock: 15533C91C Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The 3C92CTX has one parametric equivalent identified as the 3C91C. Substitution eligibility is determined by strict equivalence across the following critical parameters:

• Isolation voltage rating: 1000VDC
• Number of channels: 1
• Current transfer ratio range: 30% to 200% @ 10mA
• Switching characteristics: 9µs turn-on, 6µs turn-off (Max)
• Output type: Transistor
• Maximum output voltage: 50V
• Maximum output current per channel: 30mA
• Vce saturation: 400mV (Max)
• Operating temperature range: -55°C to 125°C
• Package form factor: TO-72-4 Metal Can
• Mounting configuration: Through Hole

The 3C91C meets all specified parameters identically to the 3C92CTX, establishing direct parametric equivalence for component selection purposes.

Parameter Comparison

Engineering Selection Recommendations

Both the 3C92CTX and 3C91C are active production components manufactured by TT Electronics/Optek Technology with identical electrical and mechanical specifications. Both devices are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The 3C91C currently has higher inventory availability at 1526 units compared to 857 units for the 3C92CTX. Selection between these parts should be based on supply chain requirements and lead time considerations, as they are electrically and mechanically interchangeable for all specified applications.

Frequently Asked Questions (FAQ)

Q: Can the 3C91C be used as a direct replacement for the 3C92CTX?

A: Yes. The 3C91C is a parametric equivalent with identical specifications across all electrical parameters, isolation voltage, switching characteristics, output ratings, and package configuration. Direct substitution is supported for applications requiring the 3C92CTX.

Q: Are there any differences in the TO-72-4 package between these parts?

A: No. Both parts use the identical TO-206AF, TO-72-4 metal can package with through-hole mounting. Pin configuration and mechanical dimensions are equivalent.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the 3C92CTX and 3C91C are ROHS3 compliant with MSL rating of 1 (Unlimited) and REACH unaffected status.

Q: What is the isolation voltage rating for these optoisolators?

A: Both parts provide 1000VDC isolation voltage with a single channel configuration.

Q: Are the switching characteristics identical between these parts?

A: Yes. Both parts have identical turn-on time of 9µs and turn-off time of 6µs (Max), with current transfer ratio specifications of 30% to 200% @ 10mA.