FOD617D3SD Equivalent & Substitute Parts

Part Overview

The FOD617D3SD is a 5000Vrms optoisolator with transistor output in 4-SMD surface mount packaging, manufactured by onsemi. This component provides galvanic isolation for low-speed signal switching applications with a single channel configuration. The part is currently obsolete, making equivalent substitutes necessary for new designs and ongoing production support.

Substiute Parts

FOD617D3SD

onsemiIn Stock: 1051FOD617D3SD Datasheet

Current PartRFQ

FOD817D3SD

onsemiIn Stock: 29929FOD817D3SD Datasheet

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VO615A-4X017T

Vishay Semiconductor Opto DivisionIn Stock: 128343VO615A-4X017T Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the FOD617D3SD is determined by the following critical parameters:

• Voltage Isolation Rating: 5000Vrms (mandatory match)
• Output Type: Transistor output configuration
• Package / Case: 4-SMD, Gull Wing surface mount
• Number of Channels: Single channel
• Operating Temperature Range: -55°C ~ 110°C
• Maximum Output Voltage: 70V
• Maximum Output Current: 50mA per channel

The identified substitutes maintain these core electrical and mechanical specifications, ensuring functional compatibility in existing circuit designs. Variations in Current Transfer Ratio, forward voltage, and saturation voltage are within acceptable ranges for typical optoisolator applications.

Parameter Comparison

Engineering Selection Recommendations

FOD817D3SD (onsemi): This substitute is an active product from the same manufacturer as the FOD617D3SD. It maintains identical isolation voltage, output voltage, and current ratings. The FOD817D3SD offers improved Current Transfer Ratio performance (300–600% @ 5mA) and lower Vce saturation (200mV maximum), providing enhanced switching characteristics. RoHS3 compliance is available. This part is the preferred substitute for direct replacement in new designs.

VO615A-4X017T (Vishay Semiconductor Opto Division): This substitute maintains all critical electrical parameters including 5000Vrms isolation, 70V maximum output voltage, and 50mA output current. The VO615A-4X017T is an active product with RoHS3 compliance. Current Transfer Ratio specifications match the FOD617D3SD (160–320% @ 10mA). Vce saturation is 300mV maximum. This part provides an alternative from a different manufacturer with equivalent performance characteristics.

Frequently Asked Questions (FAQ)

Q: Can FOD817D3SD directly replace FOD617D3SD in existing designs?

A: Yes. Both parts share identical isolation voltage (5000Vrms), output voltage (70V maximum), output current (50mA), operating temperature range (-55°C ~ 110°C), and 4-SMD Gull Wing package. The FOD817D3SD is an active product, making it suitable for production use.

Q: What is the difference between FOD617D3SD and FOD817D3SD?

A: The primary differences are product status (FOD617D3SD is obsolete; FOD817D3SD is active) and performance characteristics. FOD817D3SD offers higher Current Transfer Ratio (300–600% @ 5mA versus 160–320% @ 10mA) and lower Vce saturation (200mV versus 400mV). These improvements do not affect functional compatibility.

Q: Is VO615A-4X017T compatible with FOD617D3SD?

A: Yes. The VO615A-4X017T maintains the same isolation voltage, output specifications, operating temperature range, and 4-SMD Gull Wing package. Current Transfer Ratio and saturation voltage characteristics are equivalent to the FOD617D3SD.

Q: Are all three parts available in the same packaging?

A: Yes. All three parts use 4-SMD, Gull Wing surface mount packaging. FOD617D3SD and FOD817D3SD are supplied in Tape & Reel (TR) packaging, as is VO615A-4X017T.

Q: What compliance certifications apply to these substitutes?

A: FOD817D3SD and VO615A-4X017T both carry RoHS3 compliance. All three parts are REACH Unaffected and classified as EAR99 for export control purposes.

Q: Can I use these parts interchangeably in my circuit?

A: Yes, provided your circuit design accommodates the specified electrical parameters. All three parts meet the core requirements: 5000Vrms isolation, single-channel transistor output, 70V maximum output voltage, and 50mA maximum output current per channel.