MOC8105S Equivalent & Substitute Parts

Part Overview

The MOC8105S is an optoisolator with transistor output manufactured by onsemi, featuring 5300Vrms isolation voltage and single-channel configuration in 6-SMD surface mount packaging. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The MOC8105S serves applications requiring galvanic isolation with transistor-based output switching in compact surface mount form factors.

Substiute Parts

MOC8105S

onsemiIn Stock: 1107MOC8105S Datasheet

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CNY17F2SM

onsemiIn Stock: 12672CNY17F2SM Datasheet

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MOC8105SM

Isocom Components 2004 LTDIn Stock: 1187MOC8105SM Datasheet

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MOC8105SMT&R

Isocom Components 2004 LTDIn Stock: 1099MOC8105SMT&R Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the MOC8105S is determined by the following critical parameters: single-channel transistor output optoisolator configuration, 6-SMD surface mount package with gull wing leads, maximum output voltage of 30V, output current capability of 50mA per channel, and Vce saturation specification of 400mV maximum. The isolation voltage specification, current transfer ratio range, and operating temperature range define the functional performance envelope.

Substitute parts are grouped into two categories based on isolation voltage compatibility:

Category 1 - Reduced Isolation Voltage (Active Status): CNY17F2SM operates at 4170Vrms isolation, which is lower than the MOC8105S specification of 5300Vrms. This part maintains active product status and meets the core electrical and mechanical requirements for applications where the lower isolation voltage is acceptable.

Category 2 - Equivalent Isolation Voltage (Active Status): MOC8105SM and MOC8105SMT&R are variants of the same MOC8105 series with active product status. These parts share the same base product number and package configuration, with differences limited to packaging format (tube versus tape & reel).

Parameter Comparison

Engineering Selection Recommendations

MOC8105SM and MOC8105SMT&R are the primary substitutes for the obsolete MOC8105S. Both parts maintain active product status, share the same base product number (MOC8105), and are manufactured by Isocom Components 2004 LTD. These variants differ only in packaging format: MOC8105SM is supplied in tube packaging, while MOC8105SMT&R is supplied in tape & reel format. Both achieve ROHS3 compliance and maintain the same electrical specifications including 30V maximum output voltage, 50mA output current, and 400mV Vce saturation. The operating temperature range of -55°C to 100°C matches the original MOC8105S specification.

CNY17F2SM is an alternative substitute manufactured by onsemi with active product status and ROHS3 compliance. This part operates at 4170Vrms isolation voltage, which is lower than the MOC8105S specification of 5300Vrms. CNY17F2SM is suitable for applications where the reduced isolation voltage meets system requirements. The part maintains 50mA output current capability and 400mV Vce saturation specification. The operating temperature range is -40°C to 100°C, which is narrower than the MOC8105S range at the lower end.

All substitute parts maintain the 6-SMD gull wing surface mount package configuration, ensuring mechanical compatibility with existing PCB layouts designed for the MOC8105S.

Frequently Asked Questions (FAQ)

Q: Can MOC8105SM directly replace MOC8105S in existing designs?

A: MOC8105SM shares the same base product number, package configuration, and core electrical specifications with MOC8105S. The primary difference is product status: MOC8105S is obsolete while MOC8105SM is active. Both maintain 30V maximum output voltage, 50mA output current, and 400mV Vce saturation. Mechanical compatibility is confirmed through identical 6-SMD gull wing packaging. Verify isolation voltage requirements in your application, as both parts operate at 7.5Vpk isolation.

Q: What is the difference between MOC8105SM and MOC8105SMT&R?

A: MOC8105SM and MOC8105SMT&R are identical in electrical specifications and performance. The difference is packaging format only: MOC8105SM is supplied in tube packaging, while MOC8105SMT&R is supplied in tape & reel format. Select based on your procurement and assembly process requirements.

Q: Is CNY17F2SM compatible with MOC8105S applications?

A: CNY17F2SM is compatible for applications where the 4170Vrms isolation voltage specification is acceptable. The MOC8105S specifies 5300Vrms isolation, so CNY17F2SM operates at a lower isolation rating. Both parts maintain identical 50mA output current, 400mV Vce saturation, and 6-SMD gull wing package configuration. The operating temperature range for CNY17F2SM is -40°C to 100°C, compared to -55°C to 100°C for MOC8105S. Verify your application's isolation voltage and temperature requirements before selection.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is determined by: single-channel transistor output configuration, 6-SMD surface mount package with gull wing leads, maximum output voltage of 30V, output current capability of 50mA per channel, and Vce saturation specification of 400mV maximum. Isolation voltage, current transfer ratio range, and operating temperature range must be evaluated against specific application requirements.

Q: Are all substitute parts RoHS compliant?

A: MOC8105SM, MOC8105SMT&R, and CNY17F2SM are all ROHS3 compliant. The original MOC8105S does not specify RoHS status in available documentation.