FOD2743ASDV Equivalent & Substitute Parts

Part Overview

The FOD2743ASDV is an optoisolator with transistor output manufactured by onsemi, designed for applications requiring galvanic isolation up to 5000Vrms. This component features a single channel configuration with DC input and transistor output, suitable for signal isolation in industrial and power management circuits.

The FOD2743ASDV carries an Obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for systems utilizing this optoisolator.

Substiute Parts

FOD2743ASDV

onsemiIn Stock: 773FOD2743ASDV Datasheet

Current PartRFQ

FOD2743BSDV

onsemiIn Stock: 49348FOD2743BSDV Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FOD2743ASDV is determined by strict equivalence across the following critical parameters:

• Isolation Voltage: 5000Vrms (primary isolation specification)
• Number of Channels: 1 (functional configuration)
• Input Type: DC (signal interface requirement)
• Output Type: Transistor (output stage architecture)
• Maximum Output Voltage: 70V (voltage rating compatibility)
• Maximum Output Current: 50mA per channel (current handling capacity)
• Current Transfer Ratio Range: 50% to 100% @ 1mA (optical coupling efficiency)
• Package Type: 8-SMD, Gull Wing (physical and electrical interface)
• Operating Temperature Range: -40°C ~ 85°C (thermal operating envelope)

The FOD2743BSDV meets all these criteria and qualifies as a direct substitute for the FOD2743ASDV. The primary distinction between these parts is product status and packaging format, not electrical or mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The FOD2743BSDV is the direct substitute for the FOD2743ASDV. All electrical and mechanical parameters are identical. The FOD2743BSDV carries Active product status, ensuring long-term availability and continued manufacturer support, whereas the FOD2743ASDV is Obsolete.

The FOD2743BSDV is supplied in Tape & Reel (TR) packaging format, which is standard for production environments and automated assembly processes. The FOD2743ASDV was supplied in bulk packaging. This packaging difference does not affect electrical performance or functional compatibility.

For new designs or production continuity, the FOD2743BSDV is the appropriate selection. Both parts comply with REACH regulations and carry EAR99 export classification.

Frequently Asked Questions (FAQ)

Q: Can FOD2743BSDV directly replace FOD2743ASDV in existing designs?

A: Yes. All electrical specifications, isolation voltage, output characteristics, and operating parameters are identical. The physical package (8-SMD, Gull Wing) and pin configuration are equivalent. Direct substitution is supported without circuit modification.

Q: What is the difference between FOD2743ASDV and FOD2743BSDV?

A: The primary differences are product status and packaging format. FOD2743ASDV is Obsolete and supplied in bulk packaging. FOD2743BSDV is Active and supplied in Tape & Reel (TR) format, which is standard for high-volume manufacturing and automated assembly.

Q: Why is FOD2743ASDV marked as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued active production and support. FOD2743BSDV remains in active production as the current equivalent part.

Q: Are there any compliance or certification differences?

A: Both parts comply with REACH regulations and carry identical ECCN (EAR99) and HTSUS classifications. No compliance differences exist between the two parts.

Q: What is the Current Transfer Ratio specification, and why is it important?

A: Current Transfer Ratio (CTR) is the ratio of output collector current to input LED current, expressed as a percentage. The FOD2743 series specifies 50% to 100% @ 1mA input current. This parameter determines the optical coupling efficiency and affects circuit design for proper signal transmission across the isolation barrier.

Q: Can these parts be used interchangeably in high-temperature applications?

A: Both parts operate across the identical temperature range of -40°C to 85°C. Applications requiring operation outside this range require alternative components.