FOD2741CTV Equivalent & Substitute Parts

Part Overview

The FOD2741CTV is a 5000Vrms optoisolator with transistor output manufactured by onsemi in an 8-DIP package. This component provides galvanic isolation for DC input signals with a single channel configuration. The part is currently classified as obsolete, making identification of compatible substitutes essential for ongoing system support and new design implementations. Substitute parts must maintain electrical and mechanical compatibility across isolation voltage, current transfer ratio, output characteristics, and package specifications.

Substiute Parts

FOD2741CTV

onsemiIn Stock: 851FOD2741CTV Datasheet

Current PartRFQ

FOD2741BTV

Fairchild SemiconductorIn Stock: 2277FOD2741BTV Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the FOD2741CTV is determined by strict equivalence across the following critical parameters:

• Voltage - Isolation: 5000Vrms (primary isolation specification)
• Number of Channels: 1 (single-channel configuration)
• Current Transfer Ratio: 100% to 200% @ 10mA (input-to-output current transfer range)
• Output Type: Transistor (output stage configuration)
• Voltage - Output (Max): 30V (maximum collector voltage rating)
• Current - Output / Channel: 50mA (maximum output current per channel)
• Voltage - Forward (Vf) (Typ): 1.5V (Max) (input LED forward voltage)
• Vce Saturation (Max): 400mV (output transistor saturation voltage)
• Operating Temperature: -40°C ~ 85°C (thermal operating range)
• Package / Case: 8-DIP (0.400", 10.16mm) (physical form factor and pin compatibility)
• Mounting Type: Through Hole (PCB assembly method)

The FOD2741BTV meets all specified parameters and qualifies as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The FOD2741BTV is a direct functional equivalent to the FOD2741CTV. The primary distinction is product status: the FOD2741CTV is obsolete while the FOD2741BTV is active. For new designs and ongoing system support, the FOD2741BTV is the appropriate selection due to its active manufacturing status and continued availability. Both parts share identical electrical specifications, thermal operating range, and physical package dimensions, ensuring pin-for-pin compatibility and functional interchangeability in 8-DIP through-hole applications. Both parts carry ECCN EAR99 classification and HTSUS code 8541.49.8000.

Frequently Asked Questions (FAQ)

Q: Can the FOD2741BTV replace the FOD2741CTV in existing designs?

A: Yes. The FOD2741BTV is a direct substitute with identical electrical and mechanical specifications. Pin configuration, package dimensions (8-DIP, 0.400" / 10.16mm), and all functional parameters are equivalent.

Q: What is the primary reason to substitute the FOD2741CTV?

A: The FOD2741CTV is obsolete. The FOD2741BTV is an active product with ongoing manufacturing and supply availability.

Q: Are there any differences in isolation voltage or current transfer ratio?

A: No. Both parts specify 5000Vrms isolation voltage and identical current transfer ratio of 100% to 200% @ 10mA.

Q: Do both parts support the same operating temperature range?

A: Yes. Both parts operate across -40°C to 85°C.

Q: Is the package footprint identical?

A: Yes. Both parts use 8-DIP (0.400", 10.16mm) through-hole packaging with identical pin assignments.

Q: What are the maximum output specifications?

A: Both parts support maximum output voltage of 30V and maximum output current of 50mA per channel, with Vce saturation not exceeding 400mV.