FOD2742AV Equivalent & Substitute Parts

Part Overview

The FOD2742AV is a 2500Vrms optoisolator with transistor output manufactured by onsemi in an 8-SOIC surface mount package. This component provides galvanic isolation for single-channel DC input applications with a maximum output voltage of 70V and 50mA per channel capacity. The FOD2742AV is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

FOD2742AV

onsemiIn Stock: 941FOD2742AV Datasheet

Current PartRFQ

FOD2742BV

onsemiIn Stock: 4052FOD2742BV Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the FOD2742AV is determined by strict equivalence across the following critical parameters:

• Isolation Voltage: 2500Vrms (mandatory match)
• Number of Channels: 1 (mandatory match)
• Output Type: Transistor (mandatory match)
• Current Transfer Ratio Range: 100% to 200% @ 10mA (mandatory match)
• Maximum Output Voltage: 70V (mandatory match)
• Maximum Output Current: 50mA per channel (mandatory match)
• Package Type: 8-SOIC surface mount (mandatory match)
• Input Type: DC (mandatory match)
• Voltage - Forward (Vf): 1.2V typical (mandatory match)
• Vce Saturation: 400mV maximum (mandatory match)
• Operating Temperature Range: -25°C to 85°C (mandatory match)

The FOD2742BV meets all substitution criteria and is classified as an equivalent part for the obsolete FOD2742AV.

Parameter Comparison

Engineering Selection Recommendations

The FOD2742BV is the direct equivalent substitute for the obsolete FOD2742AV. Both components share identical electrical and mechanical specifications across all critical parameters. The FOD2742BV holds active product status with onsemi, ensuring ongoing availability and supply chain continuity. The FOD2742BV is ROHS3 compliant, providing enhanced environmental and regulatory compliance compared to the obsolete FOD2742AV. Both parts carry REACH Unaffected status and EAR99 export classification. Pin-for-pin compatibility and identical package geometry enable direct board-level substitution without design modification.

Frequently Asked Questions (FAQ)

Q: Can FOD2742BV replace FOD2742AV in existing designs? A: Yes. The FOD2742BV is electrically and mechanically equivalent to the FOD2742AV across all specified parameters. Direct substitution is supported without circuit redesign.

Q: What is the primary reason for substitution? A: The FOD2742AV is classified as obsolete. The FOD2742BV maintains active product status with onsemi, ensuring long-term availability and supply reliability.

Q: Are there package differences between these parts? A: No. Both components use identical 8-SOIC surface mount packaging with 0.154" (3.90mm) width. PCB footprints are identical.

Q: Do isolation voltage ratings differ? A: No. Both parts provide 2500Vrms isolation voltage with identical current transfer ratio specifications of 100% to 200% @ 10mA.

Q: What compliance differences exist? A: The FOD2742BV is ROHS3 compliant. Both parts are REACH Unaffected and carry EAR99 export classification.

Q: Are thermal operating ranges identical? A: Yes. Both components operate across -25°C to 85°C with identical maximum output voltage (70V) and current (50mA per channel) specifications.