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

Part Overview

The EL817(S)(TD)-VG 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 with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical performance, isolation voltage, channel configuration, and package specifications are maintained across alternative part numbers or packaging formats from the same manufacturer.

Substiute Parts

EL817(S)(TD)-VG

Everlight Electronics Co LtdIn Stock: 1008EL817(S)(TD)-VG Datasheet

Current PartRFQ

EL8171S1(TU)-G

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

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the EL817(S)(TD)-VG is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Voltage - Isolation: 5000Vrms (mandatory match)
• Number of Channels: 1 (mandatory match)
• Current Transfer Ratio range: 50% to 600% @ 5mA (mandatory match)
• Output Type: Transistor (mandatory match)
• Voltage - Output (Max): 80V (mandatory match)
• Current - Output / Channel: 50mA (mandatory match)
• Vce Saturation (Max): 200mV (mandatory match)
• Rise / Fall Time: 6µs, 8µs (mandatory match)
• Operating Temperature: -55°C ~ 110°C (mandatory match)

Mechanical & Compliance Equivalence Requirements:

• Package / Case: 4-SMD, Gull Wing (mandatory match)
• Mounting Type: Surface Mount (mandatory match)
• RoHS Status: ROHS3 Compliant (mandatory match)
• Moisture Sensitivity Level: 1 (Unlimited) (mandatory match)

Substitute parts may differ in packaging format (bulk vs. Tape & Reel) and base product series designation while maintaining identical electrical and thermal performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both the EL817(S)(TD)-VG and EL8171S1(TU)-G maintain identical electrical specifications, thermal operating range, and isolation voltage performance. Selection between these parts is determined by packaging and supply chain requirements rather than functional capability.

EL817(S)(TD)-VG is appropriate for applications requiring bulk packaging format with lower volume requirements or specific procurement workflows that do not mandate tape and reel delivery.

EL8171S1(TU)-G is appropriate for high-volume manufacturing environments, automated pick-and-place assembly operations, and supply chains requiring Tape & Reel (TR) packaging format. This part number offers higher current inventory availability.

Both parts carry Active product status, full RoHS3 compliance, and EAR99 export classification. No functional or compliance trade-offs exist between these alternatives.

Frequently Asked Questions (FAQ)

Q: Can EL8171S1(TU)-G replace EL817(S)(TD)-VG in existing designs?

A: Yes. Both parts are electrically and mechanically equivalent. The EL8171S1(TU)-G differs only in packaging format (Tape & Reel vs. bulk). No circuit redesign or board layout modification is required.

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

A: The primary difference is packaging delivery format. EL817(S)(TD)-VG is supplied in bulk packaging, while EL8171S1(TU)-G is supplied in Tape & Reel (TR) format. All electrical parameters, isolation voltage, output current, and thermal specifications are identical.

Q: Are there any compliance or certification differences?

A: No. Both parts carry identical RoHS3 compliance status, MSL 1 (Unlimited) moisture sensitivity rating, EAR99 export classification, and HTSUS code 8541.49.8000.

Q: Which part should be selected for automated assembly?

A: EL8171S1(TU)-G is designed for automated pick-and-place assembly operations due to its Tape & Reel packaging format. This format is standard for high-volume surface mount manufacturing.

Q: Are the isolation voltage and current transfer ratio specifications identical?

A: Yes. Both parts provide 5000Vrms isolation voltage and identical current transfer ratio specifications of 50% to 600% @ 5mA. Output current capability, saturation voltage, and rise/fall times are also identical.

Q: Can these parts be used interchangeably in the same PCB assembly?

A: Yes, provided the assembly process accommodates the packaging format. If the assembly line uses automated tape-fed equipment, EL8171S1(TU)-G is required. If manual placement or bulk component handling is used, EL817(S)(TD)-VG is suitable.