EL814S(TU) Equivalent & Substitute Parts

Part Overview

The EL814S(TU) is an optoisolator with transistor output manufactured by Everlight Electronics Co Ltd. This component provides 5000Vrms isolation voltage in a 4-SMD surface mount package and is classified as Active product status. The device integrates a single isolation channel with AC/DC input capability and transistor output configuration, suitable for applications requiring galvanic isolation in low-voltage control circuits.

Substitute parts are identified when equivalent electrical and mechanical parameters align within the allowed specifications for optoisolator transistor output devices. Substitution eligibility is determined by matching isolation voltage, channel count, output type, mounting configuration, and package format.

Substiute Parts

EL814S(TU)

Everlight Electronics Co LtdIn Stock: 1168EL814S(TU) Datasheet

Current PartRFQ

LTV-814HS

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

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LTV-814HS-TA1

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

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the EL814S(TU) are qualified based on the following critical parameters that define functional equivalence:

Primary Matching Criteria:

• Voltage - Isolation: 5000Vrms (exact match required)
• Number of Channels: 1 (exact match required)
• Output Type: Transistor (exact match required)
• Package / Case: 4-SMD, Gull Wing (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Input Type: AC, DC (exact match required)

Secondary Compatibility Parameters:

• Vce Saturation (Max): 200mV (exact match required)
• RoHS Status: ROHS3 Compliant (compliance requirement)
• Moisture Sensitivity Level (MSL): 1 (Unlimited) (exact match required)

The substitute parts LTV-814HS and LTV-814HS-TA1 manufactured by Lite-On Inc. satisfy all primary and secondary matching criteria. Both parts maintain identical isolation voltage, channel configuration, output topology, and physical package specifications. The primary distinction between substitutes is packaging format: LTV-814HS is supplied in Tube packaging, while LTV-814HS-TA1 is supplied in Tape & Reel (TR) format.

Parameter Comparison

Engineering Selection Recommendations

EL814S(TU) - Primary Selection

The EL814S(TU) remains the primary component choice when Everlight Electronics Co Ltd sourcing is specified or preferred. This part is Active status with ROHS3 compliance and MSL 1 rating. Current inventory of 1070 pieces supports standard procurement timelines.

LTV-814HS-TA1 - Preferred Substitute

The LTV-814HS-TA1 is the recommended substitute when EL814S(TU) availability is constrained. This part matches all critical electrical and mechanical parameters, maintains identical isolation voltage (5000Vrms), output topology (transistor), and package configuration (4-SMD, Gull Wing). The Tape & Reel packaging format aligns with the original part's TR specification. Active product status, ROHS3 compliance, and MSL 1 rating ensure regulatory and environmental compatibility. Inventory of 2200 pieces supports production requirements.

LTV-814HS - Secondary Substitute

The LTV-814HS provides functional equivalence with identical electrical specifications and package format. Tube packaging differs from the original TR format and may require process adjustment for automated assembly. This part is suitable for applications where packaging format flexibility is acceptable. Active product status and full compliance certifications apply. Inventory of 16958 pieces provides extended availability.

Operating Temperature Consideration

The EL814S(TU) specifies operating temperature range of -55°C ~ 110°C, while both LTV-814HS variants specify -30°C ~ 100°C. Applications requiring operation below -30°C or above 100°C must retain the EL814S(TU) specification.

Output Voltage Consideration

The EL814S(TU) specifies maximum output voltage of 80V, while LTV-814HS variants specify 35V maximum. Applications requiring output voltage operation above 35V must retain the EL814S(TU) specification.

Frequently Asked Questions (FAQ)

Q: Can LTV-814HS and LTV-814HS-TA1 be used interchangeably with EL814S(TU)?

A: LTV-814HS-TA1 provides direct substitution with matching isolation voltage (5000Vrms), channel count (1), output type (transistor), and package configuration (4-SMD, Gull Wing). LTV-814HS provides electrical equivalence but differs in packaging format (Tube vs. Tape & Reel). Both parts maintain identical Vce saturation (200mV) and MSL 1 rating. Substitution is valid when operating temperature range (-30°C ~ 100°C) and maximum output voltage (35V) requirements are compatible with the application.

Q: What are the key differences between EL814S(TU) and the substitute parts?

A: The primary differences are: (1) Operating temperature range: EL814S(TU) supports -55°C ~ 110°C versus -30°C ~ 100°C for substitutes; (2) Maximum output voltage: EL814S(TU) supports 80V versus 35V for substitutes; (3) Current transfer ratio specifications differ at different test currents; (4) Rise/fall time characteristics differ (EL814S(TU): 7µs/11µs versus LTV-814HS variants: 4µs/3µs); (5) Packaging format: EL814S(TU) and LTV-814HS-TA1 use Tape & Reel, while LTV-814HS uses Tube.

Q: Which substitute part should be selected for automated assembly processes?

A: LTV-814HS-TA1 is the preferred choice for automated assembly due to Tape & Reel packaging format, which matches the original EL814S(TU) specification. This packaging format is optimized for pick-and-place equipment and standard SMD assembly workflows. LTV-814HS in Tube packaging may require manual handling or process modification for automated systems.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. EL814S(TU), LTV-814HS, and LTV-814HS-TA1 are all ROHS3 compliant. All parts maintain MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard storage and handling procedures.

Q: What inventory levels are available for each part?

A: EL814S(TU) has 1070 pieces in stock. LTV-814HS-TA1 has 2200 pieces in stock. LTV-814HS has 16958 pieces in stock. Inventory levels should be verified at time of procurement.

Q: Can EL814S(TU) be substituted in applications requiring operation below -30°C?

A: No. The substitute parts LTV-814HS and LTV-814HS-TA1 specify minimum operating temperature of -30°C. Applications requiring operation at -55°C must use EL814S(TU), which supports this extended lower temperature range.

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

A: No. LTV-814HS and LTV-814HS-TA1 specify maximum output voltage of 35V. Applications requiring 80V output voltage operation must use EL814S(TU). Exceeding the 35V maximum output voltage specification of substitute parts may result in component failure.