EL817(S)(TD)-G Equivalent & Substitute Parts

Part Overview

The EL817(S)(TD)-G is an optoisolator with transistor output manufactured by Everlight Electronics Co Ltd. This component provides galvanic isolation up to 5000Vrms with a single channel configuration in a 4-SMD surface mount package. The device is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical parameters are required for design flexibility, supply chain continuity, or packaging format preferences while maintaining functional compatibility in isolation applications.

Substiute Parts

EL817(S)(TD)-G

Everlight Electronics Co LtdIn Stock: 1172EL817(S)(TD)-G Datasheet

Current PartRFQ

EL8171S1(TU)-G

Everlight Electronics Co LtdIn Stock: 5131EL8171S1(TU)-G Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the EL817(S)(TD)-G are identified based on strict equivalence of the following critical parameters:

• Isolation Voltage: 5000Vrms (mandatory match)
• Number of Channels: 1 (mandatory match)
• Output Type: Transistor (mandatory match)
• Current Transfer Ratio Range: 50% to 600% @ 5mA (mandatory match)
• Maximum Output Voltage: 80V (mandatory match)
• Maximum Output Current: 50mA per channel (mandatory match)
• Package Configuration: 4-SMD, Gull Wing (mandatory match)
• Operating Temperature Range: -55°C to 110°C (mandatory match)
• RoHS Compliance: ROHS3 Compliant (mandatory match)

The substitute part EL8171S1(TU)-G meets all electrical and mechanical equivalence criteria. The primary difference is the packaging format: the substitute is supplied in Tape & Reel (TR) configuration versus the standard packaging of the main part. Both parts share the same base product series designation and maintain identical functional specifications for isolation, switching characteristics, and thermal performance.

Parameter Comparison

Engineering Selection Recommendations

Both the EL817(S)(TD)-G and EL8171S1(TU)-G are Active status products manufactured by Everlight Electronics Co Ltd with full ROHS3 compliance. Selection between these parts is determined by packaging and supply requirements rather than electrical performance.

EL817(S)(TD)-G is appropriate for applications requiring standard packaging format with lower volume requirements or when component-level packaging is specified.

EL8171S1(TU)-G is appropriate for high-volume production environments where Tape & Reel packaging provides automated assembly advantages and cost efficiency. This part maintains identical electrical specifications and thermal performance characteristics.

Both parts satisfy identical isolation voltage, switching speed, current transfer ratio, and temperature range requirements. Component selection should be based on manufacturing process requirements, inventory management practices, and supply chain availability rather than functional differences.

Frequently Asked Questions (FAQ)

Q: Are EL817(S)(TD)-G and EL8171S1(TU)-G electrically interchangeable?

A: Yes. Both parts have identical electrical specifications including 5000Vrms isolation voltage, 50-600% current transfer ratio, 80V maximum output voltage, and 50mA maximum output current per channel. Switching characteristics, forward voltage, and saturation voltage are identical.

Q: What is the difference between these two part numbers?

A: The primary difference is packaging format. EL817(S)(TD)-G uses standard packaging, while EL8171S1(TU)-G is supplied in Tape & Reel (TR) format. Both use 4-SMD, Gull Wing package configuration and are surface mount components.

Q: Can I use EL8171S1(TU)-G in place of EL817(S)(TD)-G in my PCB design?

A: Yes. The physical footprint is identical (4-SMD, Gull Wing). The component can be placed and soldered using the same assembly process. Tape & Reel packaging does not affect PCB-level compatibility.

Q: Are both parts RoHS compliant?

A: Yes. Both EL817(S)(TD)-G and EL8171S1(TU)-G are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited).

Q: Which part should I specify for high-volume production?

A: EL8171S1(TU)-G in Tape & Reel format is optimized for automated assembly in high-volume manufacturing environments. Standard packaging may be more suitable for lower volumes or manual assembly processes.

Q: Do both parts operate across the same temperature range?

A: Yes. Both parts operate from -55°C to 110°C with identical rise and fall time specifications of 6µs and 8µs respectively.