EL814S(A)(TD) Equivalent & Substitute Parts

Part Overview

The EL814S(A)(TD) is an optoisolator with transistor output manufactured by Everlight Electronics Co Ltd. This component provides 5000Vrms isolation in a 4-SMD surface mount package, designed for AC and DC input applications. The part is currently active in production with 760 pieces in stock inventory.

Substitute parts are identified when equivalent electrical and mechanical parameters are available from alternative manufacturers. Substitution becomes necessary due to supply availability, lead time requirements, or inventory management across multiple sourcing channels.

Substiute Parts

EL814S(A)(TD)

Everlight Electronics Co LtdIn Stock: 778EL814S(A)(TD) Datasheet

Current PartRFQ

LTV-814HS

Lite-On Inc.In Stock: 17026LTV-814HS Datasheet

SimilarRFQ

LTV-814HS-TA1

Lite-On Inc.In Stock: 2229LTV-814HS-TA1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the EL814S(A)(TD) are qualified based on the following critical parameters that determine functional equivalence:

Isolation Voltage: Both substitute parts maintain 5000Vrms isolation, matching the primary requirement for galvanic separation.

Package Configuration: All parts use 4-SMD, Gull Wing surface mount packaging, ensuring mechanical and footprint compatibility on printed circuit boards.

Output Type: Transistor output topology is consistent across all parts, maintaining circuit interface compatibility.

Input Type: AC and DC input capability is preserved in substitute parts, supporting the same signal source flexibility.

Mounting Type: Surface mount technology is uniform across all candidates, supporting automated assembly processes.

Compliance Standards: All parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating.

The substitute parts identified are LTV-814HS and LTV-814HS-TA1, both manufactured by Lite-On Inc. These parts differ in packaging format (Tube versus Tape & Reel) but share identical electrical specifications within the allowed parameter set.

Parameter Comparison

Engineering Selection Recommendations

Electrical Compatibility: The EL814S(A)(TD) and LTV-814HS/LTV-814HS-TA1 share identical isolation voltage (5000Vrms), output type (Transistor), and input type (AC, DC) specifications. All parts are active products with current manufacturing status.

Mechanical Compatibility: Package configuration (4-SMD, Gull Wing) and mounting type (Surface Mount) are identical across all parts, ensuring direct footprint compatibility on PCB designs.

Compliance Alignment: All parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) rating, supporting equivalent environmental and reliability standards.

Packaging Differentiation: LTV-814HS is supplied in Tube packaging, while LTV-814HS-TA1 is supplied in Tape & Reel format. Selection between these two depends on assembly process requirements and inventory management practices.

Parameter Variations: The substitute parts exhibit different electrical characteristics in current transfer ratio measurement conditions (20-80% @ 100mA versus 50-150% @ 1mA), maximum output voltage (35V versus 80V), and operating temperature range (-30°C ~ 100°C versus -55°C ~ 110°C). These differences must be evaluated against specific circuit requirements.

Frequently Asked Questions (FAQ)

Q: Can LTV-814HS or LTV-814HS-TA1 be used as direct replacements for EL814S(A)(TD)?

A: Both LTV-814HS and LTV-814HS-TA1 share the same 4-SMD package footprint, isolation voltage, and basic functional topology. However, differences in maximum output voltage (35V versus 80V), operating temperature range, and current transfer ratio characteristics must be evaluated against circuit design specifications before substitution.

Q: What is the difference between LTV-814HS and LTV-814HS-TA1?

A: Both parts are electrically identical. The difference is packaging format: LTV-814HS is supplied in Tube packaging, while LTV-814HS-TA1 is supplied in Tape & Reel (TR) format. Selection depends on assembly equipment compatibility and production volume requirements.

Q: Are all three parts RoHS compliant?

A: Yes. EL814S(A)(TD), LTV-814HS, and LTV-814HS-TA1 are all ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating.

Q: What are the key electrical differences between the main part and substitutes?

A: The primary differences are: (1) Maximum output voltage: EL814S(A)(TD) supports 80V while substitutes support 35V; (2) Operating temperature range: EL814S(A)(TD) operates from -55°C to 110°C while substitutes operate from -30°C to 100°C; (3) Current transfer ratio is measured at different conditions (1mA versus 100mA).

Q: Which substitute should be selected for high-temperature applications?

A: The EL814S(A)(TD) supports operation to 110°C, while LTV-814HS and LTV-814HS-TA1 are rated to 100°C maximum. For applications requiring operation above 100°C, the EL814S(A)(TD) is the appropriate selection.

Q: Can these parts be used in applications requiring 80V output?

A: The EL814S(A)(TD) supports maximum output voltage of 80V. The LTV-814HS and LTV-814HS-TA1 substitutes support only 35V maximum output voltage. For 80V applications, the EL814S(A)(TD) must be used.