FOD2741CT Equivalent & Substitute Parts

Part Overview

The FOD2741CT is an optoisolator with transistor output manufactured by onsemi, designed for applications requiring 5000Vrms isolation. This component features a single channel configuration with DC input and transistor output, suitable for signal isolation in industrial and consumer electronics applications. The FOD2741CT is classified as obsolete, making identification of compatible substitute parts essential for ongoing design support and procurement planning. The FOD2741BTV serves as a direct functional equivalent from Fairchild Semiconductor, maintaining identical electrical and mechanical specifications while offering active product status.

Substiute Parts

FOD2741CT

onsemiIn Stock: 11160FOD2741CT Datasheet

Current PartRFQ

FOD2741BTV

Fairchild SemiconductorIn Stock: 2277FOD2741BTV Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the FOD2741CT is determined by strict equivalence across the following critical parameters:

• Voltage - Isolation: 5000Vrms
• Number of Channels: 1
• Input Type: DC
• Output Type: Transistor
• Current Transfer Ratio: 100% - 200% @ 10mA
• Voltage - Output (Max): 30V
• Current - Output / Channel: 50mA
• Vce Saturation (Max): 400mV
• Operating Temperature Range: -40°C ~ 85°C
• Package / Case: 8-DIP (0.400", 10.16mm)
• Mounting Type: Through Hole

The FOD2741BTV from Fairchild Semiconductor meets all specified parameters and qualifies as a direct substitute. Both components share identical electrical performance characteristics and mechanical compatibility, enabling seamless integration into existing designs.

Parameter Comparison

Engineering Selection Recommendations

The FOD2741BTV is the qualified substitute for the obsolete FOD2741CT. Both components carry identical ECCN (EAR99) and HTSUS (8541.49.8000) classifications, ensuring regulatory compliance equivalence. The FOD2741BTV maintains active product status, providing assured long-term availability and supply chain continuity compared to the obsolete FOD2741CT. All electrical parameters, thermal specifications, and mechanical dimensions are identical, enabling direct replacement without circuit modification. Selection of the FOD2741BTV is appropriate for new designs and legacy system support requiring optoisolator functionality with 5000Vrms isolation capability in 8-DIP through-hole packaging.

Frequently Asked Questions (FAQ)

Q: Can the FOD2741BTV directly replace the FOD2741CT in existing designs?

A: Yes. The FOD2741BTV is electrically and mechanically equivalent to the FOD2741CT. All critical parameters including isolation voltage, current transfer ratio, output voltage, saturation voltage, and operating temperature range are identical. The 8-DIP package dimensions and through-hole mounting type are the same, enabling direct PCB substitution.

Q: Why is the FOD2741CT listed as obsolete?

A: The FOD2741CT has reached end-of-life status with onsemi. The FOD2741BTV from Fairchild Semiconductor provides continued access to equivalent optoisolator functionality with active product support.

Q: Are there any compliance differences between the two parts?

A: No. Both the FOD2741CT and FOD2741BTV share identical ECCN and HTSUS classifications, indicating equivalent regulatory and trade compliance status.

Q: What are the key parameters that define substitution compatibility?

A: Substitution is determined by matching isolation voltage (5000Vrms), channel count (1), input/output types (DC input, transistor output), current transfer ratio range (100-200% @ 10mA), maximum output voltage (30V), maximum output current (50mA), saturation voltage (400mV max), operating temperature range (-40°C to 85°C), and package type (8-DIP through-hole).

Q: Is the FOD2741BTV available in the same packaging as the FOD2741CT?

A: Yes. Both components use 8-DIP (0.400", 10.16mm) through-hole packaging, ensuring mechanical compatibility and identical PCB footprint.