FOD2741CS Equivalent & Substitute Parts

Part Overview

The FOD2741CS 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 signal isolation in industrial and power management circuits.

The FOD2741CS is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for applications currently utilizing this component.

Substiute Parts

FOD2741CS

onsemiIn Stock: 693FOD2741CS Datasheet

Current PartRFQ

FOD2741BS

Fairchild SemiconductorIn Stock: 1524FOD2741BS Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FOD2741CS are identified based on strict electrical and mechanical parameter matching. The following parameters determine substitution eligibility:

• Voltage - Isolation: 5000Vrms (primary isolation specification)
• Number of Channels: 1 (functional configuration)
• Output Type: Transistor (output stage architecture)
• Current Transfer Ratio: 100% @ 10mA (Min) to 200% @ 10mA (Max)
• Voltage - Output (Max): 30V
• Current - Output / Channel: 50mA
• Vce Saturation (Max): 400mV
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SMD, Gull Wing (mechanical compatibility)

Parts matching all these parameters are classified as direct electrical and mechanical equivalents.

Parameter Comparison

Engineering Selection Recommendations

The FOD2741BS (Fairchild Semiconductor) is a direct electrical and mechanical equivalent to the FOD2741CS. Both components share identical electrical specifications across all critical parameters: isolation voltage, current transfer ratio, output voltage and current ratings, saturation characteristics, and operating temperature range. Both are packaged in 8-SMD, Gull Wing configuration, ensuring mechanical compatibility in existing PCB layouts.

The primary distinction is product status: the FOD2741CS is obsolete, while the FOD2741BS is active. For new designs or ongoing production requiring component replenishment, the FOD2741BS provides supply chain continuity with equivalent performance characteristics. Both components carry identical ECCN (EAR99) and HTSUS (8541.49.8000) classifications.

Frequently Asked Questions (FAQ)

Q: Can FOD2741BS be used as a direct replacement for FOD2741CS?

A: Yes. The FOD2741BS meets all electrical and mechanical specifications of the FOD2741CS. Isolation voltage, current transfer ratio, output ratings, saturation voltage, operating temperature range, and package configuration are identical between both parts.

Q: Are there any package compatibility concerns when substituting FOD2741BS for FOD2741CS?

A: No. Both components use 8-SMD, Gull Wing packaging. PCB footprints, pin assignments, and mounting procedures are compatible.

Q: Why is the FOD2741CS listed as obsolete?

A: Obsolescence status indicates the component is no longer manufactured by onsemi. The FOD2741BS, manufactured by Fairchild Semiconductor, provides equivalent functionality for applications currently using the FOD2741CS.

Q: What parameters must match for a part to be considered a substitute for FOD2741CS?

A: Critical matching parameters include 5000Vrms isolation voltage, single-channel configuration, transistor output type, 100-200% current transfer ratio at 10mA, 30V maximum output voltage, 50mA output current per channel, 400mV maximum Vce saturation, -40°C to 85°C operating temperature range, and 8-SMD Gull Wing package.

Q: Are compliance certifications identical between FOD2741CS and FOD2741BS?

A: Both components share identical ECCN (EAR99) and HTSUS (8541.49.8000) classifications, indicating equivalent regulatory and trade compliance status.