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

Part Overview

The EL817(S)(TU)-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 with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across isolation voltage, current transfer ratio, output characteristics, and package specifications. Alternative models ensure design flexibility and supply chain continuity while preserving circuit functionality.

Substiute Parts

EL817(S)(TU)-G

Everlight Electronics Co LtdIn Stock: 686EL817(S)(TU)-G 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)(TU)-G is determined by strict equivalence across the following critical parameters:

Isolation Performance: Voltage isolation rating must equal 5000Vrms to maintain galvanic separation specifications.

Channel Configuration: Single channel (1 channel) requirement ensures functional compatibility in isolation circuits.

Current Transfer Ratio: Both minimum (50% @ 5mA) and maximum (600% @ 5mA) specifications must be matched to preserve input-output signal transfer characteristics.

Output Characteristics: Transistor output type, maximum output voltage (80V), maximum output current (50mA), and saturation voltage (200mV) must remain constant.

Switching Performance: Rise and fall times (6µs, 8µs) define circuit timing behavior and must be equivalent.

Temperature Range: Operating temperature span (-55°C ~ 110°C) must be maintained for thermal compatibility.

Package Specification: 4-SMD Gull Wing surface mount package ensures mechanical and electrical compatibility with PCB layouts.

Compliance: ROHS3 compliance and MSL 1 rating must be preserved.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: EL817(S)(TU)-G is the baseline reference part with confirmed Active product status and ROHS3 compliance. Current inventory: 646 Pcs New Original In Stock.

Substitute Selection: EL8171S1(TU)-G is a parametric equivalent with identical electrical and mechanical specifications. This substitute maintains all critical performance parameters including 5000Vrms isolation, 50-600% current transfer ratio, 80V maximum output voltage, and 50mA output current. Both parts share identical package configuration (4-SMD Gull Wing), operating temperature range (-55°C ~ 110°C), and compliance certifications (ROHS3, MSL 1). The substitute part carries higher inventory availability: 5099 Pcs New Original In Stock.

Packaging Consideration: The substitute part is supplied in Tape & Reel (TR) format, while the main part packaging specification is not explicitly defined. Both maintain identical 4-SMD Gull Wing mechanical compatibility for surface mount assembly.

Compliance Verification: Both parts are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1), ensuring regulatory and environmental compatibility across applications.

Frequently Asked Questions (FAQ)

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

A: Yes. All electrical parameters including isolation voltage (5000Vrms), current transfer ratio (50-600% @ 5mA), output voltage (80V max), output current (50mA), and switching characteristics (6µs/8µs rise/fall time) are identical. The 4-SMD Gull Wing package ensures mechanical compatibility with existing PCB layouts.

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

A: The parts are parametric equivalents with identical electrical and mechanical specifications. The primary difference is packaging format: EL8171S1(TU)-G is supplied in Tape & Reel format with higher inventory availability (5099 Pcs vs 646 Pcs).

Q: Are both parts suitable for 5000Vrms isolation applications?

A: Yes. Both EL817(S)(TU)-G and EL8171S1(TU)-G maintain 5000Vrms isolation voltage rating, meeting high-voltage galvanic separation requirements.

Q: Do these parts have identical operating temperature ranges?

A: Yes. Both parts operate across -55°C to 110°C, ensuring thermal compatibility in equivalent applications.

Q: Are both parts RoHS compliant?

A: Yes. Both parts are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity), meeting environmental and regulatory requirements.

Q: Can I use either part interchangeably in surface mount assembly?

A: Yes. Both parts use identical 4-SMD Gull Wing surface mount package configuration, ensuring compatibility with standard SMD assembly processes and equipment.

Q: What is the current transfer ratio specification?

A: Both parts specify 50% minimum and 600% maximum current transfer ratio at 5mA input current, defining the input-output signal transfer characteristics.