FOD2743CSD Equivalent & Substitute Parts

Part Overview

The FOD2743CSD is an optoisolator with transistor output manufactured by onsemi, designed for high-voltage isolation applications requiring 5000Vrms isolation rating. This component features a single channel configuration with DC input and transistor output, suitable for driving loads up to 50mA at maximum 70V output voltage.

The FOD2743CSD is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this component.

Substiute Parts

FOD2743CSD

onsemiIn Stock: 1055FOD2743CSD Datasheet

Current PartRFQ

FOD2743BSD

onsemiIn Stock: 1965FOD2743BSD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FOD2743CSD are identified based on strict electrical and mechanical parameter equivalence. The following parameters define substitution eligibility:

• Voltage - Isolation: 5000Vrms (critical for high-voltage isolation applications)
• Number of Channels: 1 (functional requirement)
• Input Type: DC (signal interface requirement)
• Output Type: Transistor (output stage configuration)
• Current Transfer Ratio range: 50% to 100% @ 1mA (transfer characteristic)
• Voltage - Output (Max): 70V (maximum output voltage rating)
• Current - Output / Channel: 50mA (maximum output current)
• Mounting Type: Surface Mount (assembly compatibility)
• Package / Case: 8-SMD, Gull Wing (physical footprint compatibility)

The FOD2743BSD meets all substitution criteria and is classified as an active product, providing supply continuity for the obsolete FOD2743CSD.

Parameter Comparison

Engineering Selection Recommendations

The FOD2743BSD is the direct substitute for the obsolete FOD2743CSD. Both components share identical electrical specifications and physical packaging, ensuring functional equivalence in circuit applications.

The FOD2743BSD carries active product status, providing assured supply availability and manufacturing support. The substitute part is ROHS3 compliant, meeting current environmental and regulatory requirements for new designs and production runs.

Both parts maintain REACH Unaffected status and EAR99 export classification. The packaging difference (FOD2743CSD supplied in standard packaging versus FOD2743BSD in Tape & Reel format) reflects standard industry practice for active products and does not affect component functionality or performance.

Frequently Asked Questions (FAQ)

Q: Can FOD2743BSD be used as a direct replacement for FOD2743CSD in existing designs?

A: Yes. The FOD2743BSD is electrically and mechanically equivalent to the FOD2743CSD. All critical parameters including isolation voltage, current transfer ratio, output voltage rating, and output current capacity are identical. The 8-SMD Gull Wing package footprint is the same, enabling direct PCB substitution.

Q: What is the primary advantage of switching to FOD2743BSD?

A: The FOD2743BSD is an active product with assured supply continuity, whereas the FOD2743CSD is obsolete. Transitioning to the FOD2743BSD eliminates supply chain risk and ensures access to current manufacturing batches.

Q: Are there packaging considerations when substituting FOD2743BSD for FOD2743CSD?

A: The FOD2743BSD is supplied in Tape & Reel (TR) packaging, which is standard for active optoisolator products. This packaging format is compatible with automated assembly equipment and does not affect component performance or functionality.

Q: Do both parts meet the same regulatory and compliance standards?

A: Both parts maintain REACH Unaffected status and EAR99 export classification. The FOD2743BSD additionally carries ROHS3 compliance certification, meeting current environmental regulations for new production.

Q: What parameters determine substitution eligibility for optoisolators in this category?

A: Substitution eligibility is determined by matching isolation voltage rating, number of channels, input and output types, current transfer ratio range, maximum output voltage and current ratings, operating temperature range, and physical package configuration. All these parameters must align between the main part and substitute part.