EL814S(TB)-V Equivalent & Substitute Parts

Part Overview

The EL814S(TB)-V is a 5000Vrms optoisolator with transistor output manufactured by Everlight Electronics Co Ltd. This component provides galvanic isolation for AC and DC input signals with a single-channel transistor output configuration in a 4-SMD surface mount package. The part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active product lines that maintain electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Voltage - Isolation	5000Vrms
Number of Channels	1
Output Type	Transistor
Input Type	AC, DC
Mounting Type	Surface Mount
Package / Case	4-SMD, Gull Wing
Vce Saturation (Max)	200mV
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the EL814S(TB)-V is based on the following critical parameters that must be maintained:

Mandatory Matching Parameters:

Voltage - Isolation: 5000Vrms
Number of Channels: 1
Output Type: Transistor
Package / Case: 4-SMD, Gull Wing
Mounting Type: Surface Mount
Vce Saturation (Max): 200mV

The substitute parts LTV-814HS and LTV-814HS-TA1 from Lite-On Inc. satisfy all mandatory electrical isolation and mechanical requirements. Both variants are manufactured from the same base product number (LTV-814) and differ only in packaging format: LTV-814HS is supplied in Tube packaging, while LTV-814HS-TA1 is supplied in Tape & Reel format. Both maintain active product status and full ROHS3 compliance.

Parameter Comparison

Parameter	EL814S(TB)-V	LTV-814HS	LTV-814HS-TA1
Manufacturer	Everlight Electronics Co Ltd	Lite-On Inc.	Lite-On Inc.
Product Status	Discontinued at DiGi Electronics	Active	Active
Number of Channels	1	1	1
Voltage - Isolation	5000Vrms	5000Vrms	5000Vrms
Current Transfer Ratio (Min)	20% @ 1mA	20% @ 100mA	20% @ 100mA
Current Transfer Ratio (Max)	300% @ 1mA	80% @ 100mA	80% @ 100mA
Rise / Fall Time (Typ)	7µs, 11µs	4µs, 3µs	4µs, 3µs
Input Type	AC, DC	AC, DC	AC, DC
Output Type	Transistor	Transistor	Transistor
Voltage - Output (Max)	80V	35V	35V
Voltage - Forward (Vf) (Typ)	1.2V	1.4V	1.4V
Current - DC Forward (If) (Max)	60 mA	150 mA	150 mA
Vce Saturation (Max)	200mV	200mV	200mV
Operating Temperature	-55°C ~ 110°C	-30°C ~ 100°C	-30°C ~ 100°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Packaging Format	Not specified	Tube	Tape & Reel (TR)

Engineering Selection Recommendations

LTV-814HS and LTV-814HS-TA1 Suitability:

Both LTV-814HS variants are direct functional substitutes for the EL814S(TB)-V based on electrical isolation requirements and mechanical compatibility. The substitute parts maintain the 5000Vrms isolation voltage, single-channel transistor output, and identical 4-SMD Gull Wing package configuration. Both are ROHS3 compliant with MSL Level 1 rating, matching the original part's environmental specifications.

Packaging Selection:

LTV-814HS (Tube): Select for applications requiring standard tube packaging with 16,958 units in current inventory.
LTV-814HS-TA1 (Tape & Reel): Select for high-volume automated assembly processes with 2,200 units in current inventory.

Active Product Status:

Both substitute parts carry active product status from Lite-On Inc., ensuring continued availability and supply chain stability compared to the discontinued EL814S(TB)-V.

Operating Temperature Consideration:

The EL814S(TB)-V operates across -55°C to 110°C, while LTV-814HS and LTV-814HS-TA1 operate across -30°C to 100°C. Applications requiring operation below -30°C or above 100°C must evaluate alternative solutions outside this substitute group.

Frequently Asked Questions (FAQ)

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

A: Yes, both parts are electrically and mechanically compatible. The primary difference is packaging format: LTV-814HS uses Tube packaging while LTV-814HS-TA1 uses Tape & Reel format. Selection depends on assembly process requirements.

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

A: The substitute parts exhibit faster rise and fall times (4µs and 3µs versus 7µs and 11µs), lower maximum output voltage (35V versus 80V), and higher maximum forward current (150mA versus 60mA). These differences must be evaluated against specific circuit requirements.

Q: Are there temperature range limitations when substituting?

A: Yes. The EL814S(TB)-V operates from -55°C to 110°C, while both LTV-814HS variants operate from -30°C to 100°C. Applications requiring extended low-temperature operation below -30°C cannot use these substitutes.

Q: Do the substitute parts maintain the same isolation voltage?

A: Yes. Both LTV-814HS and LTV-814HS-TA1 maintain 5000Vrms isolation voltage, identical to the EL814S(TB)-V.

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

A: Both parts are electrically identical. LTV-814HS is supplied in Tube packaging for standard applications, while LTV-814HS-TA1 is supplied in Tape & Reel format for automated high-volume assembly processes.

Q: Are both substitute parts ROHS3 compliant?

A: Yes. Both LTV-814HS and LTV-814HS-TA1 are ROHS3 compliant with MSL Level 1 rating, matching the original part's environmental compliance.

Q: Which substitute part should be selected for new designs?

A: For new designs, either LTV-814HS or LTV-814HS-TA1 can be selected based on packaging requirements. LTV-814HS-TA1 is recommended for high-volume production due to Tape & Reel format compatibility with automated assembly equipment.

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