EL816 Optoisolator Equivalent & Substitute Parts

Part Overview

The EL816 is an active 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-DIP through-hole package. The part is currently in active production status with 2400 pieces available in inventory.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across isolation voltage, current transfer ratio specifications, output voltage/current ratings, and package form factor. Alternative sources become necessary for supply chain continuity, inventory availability, or procurement preferences.

Substiute Parts

EL816

Everlight Electronics Co LtdIn Stock: 2507EL816 Datasheet

Current PartRFQ

LTV-816

Lite-On Inc.In Stock: 45423LTV-816 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the EL816 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Isolation voltage rating: 5000Vrms (no reduction permitted)
• Number of channels: 1 (single channel configuration)
• Current transfer ratio range: 50% to 600% @ 5mA (full range match required)
• Output type: Transistor (topology must match)
• Maximum output voltage: 80V (no reduction permitted)
• Maximum output current per channel: 50mA (no reduction permitted)
• Vce saturation: 200mV maximum (no increase permitted)
• Rise/fall time: 4µs / 3µs typical (matching switching characteristics)
• Input type: DC

Mechanical Equivalence Criteria:

• Package form factor: 4-DIP (0.300", 7.62mm)
• Mounting type: Through Hole
• Pin configuration and spacing must be identical

Compliance Criteria:

• RoHS3 compliance required
• Active product status

The LTV-816 manufactured by Lite-On Inc. meets all electrical and mechanical equivalence criteria and qualifies as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

EL816 (Everlight Electronics Co Ltd):

• Primary selection for applications requiring extended low-temperature operation below -30°C
• Operating temperature range of -55°C to 110°C accommodates cryogenic and harsh industrial environments
• Maximum DC forward current rating of 60mA provides additional input current margin
• ROHS3 compliant and active production status
• 2400 pieces currently in stock

LTV-816 (Lite-On Inc.):

• Direct electrical and mechanical substitute for standard temperature range applications (-30°C to 110°C)
• Identical isolation voltage, current transfer ratio, output specifications, and switching characteristics
• ROHS3 compliant and active production status
• Significantly higher inventory availability (45,400 pieces in stock)
• Suitable for applications where extended low-temperature performance is not required
• Maximum DC forward current rating of 50mA is adequate for standard input drive circuits

Both parts carry identical compliance certifications (ROHS3, ECCN EAR99, HTSUS 8541.49.8000) and unlimited moisture sensitivity rating (MSL 1).

Frequently Asked Questions (FAQ)

Q: Can LTV-816 replace EL816 in all applications?

A: LTV-816 is a direct substitute for applications operating within the -30°C to 110°C temperature range. If your circuit operates below -30°C, the EL816 is required due to its extended lower temperature limit of -55°C. All other electrical and mechanical parameters are equivalent.

Q: What is the significance of the Current Transfer Ratio specification?

A: Current Transfer Ratio (CTR) defines the ratio of output collector current to input LED current. Both EL816 and LTV-816 specify 50% to 600% CTR @ 5mA, meaning the output current will be 50% to 600% of the input current. This range must match exactly for substitution eligibility.

Q: Are there differences in the DC forward current rating between these parts?

A: Yes. EL816 specifies a maximum DC forward current (If) of 60mA, while LTV-816 specifies 50mA. This difference affects the maximum input LED drive current. For circuits designed within the 50mA limit, both parts are interchangeable. Circuits requiring the full 60mA input current capability must use EL816.

Q: Do both parts use the same 4-DIP package?

A: Yes. Both EL816 and LTV-816 use identical 4-DIP through-hole packages with 0.300" (7.62mm) spacing. Pin configuration and PCB footprint are identical, enabling direct board-level substitution without layout modifications.

Q: What is the difference in operating temperature ranges?

A: EL816 operates from -55°C to 110°C, while LTV-816 operates from -30°C to 110°C. The EL816 supports 25°C lower minimum temperature, making it suitable for cryogenic, aerospace, or extreme cold-weather applications. Standard industrial applications typically operate within the -30°C to 110°C range covered by both parts.

Q: Are both parts RoHS3 compliant?

A: Yes. Both EL816 and LTV-816 are ROHS3 compliant with unlimited moisture sensitivity (MSL 1), meeting current environmental and reliability standards for commercial and industrial applications.

Q: What is the significance of the 4µs rise time and 3µs fall time?

A: These switching characteristics define the speed at which the optoisolator responds to input signal changes. Both parts specify identical 4µs rise time and 3µs fall time, ensuring equivalent switching performance in high-frequency or time-critical applications.

Q: Can I use LTV-816 if my design specifies EL816?

A: LTV-816 is a qualified substitute provided your application operates within -30°C to 110°C and does not require the full 60mA input current capability. Verify these conditions before substitution. If your design operates below -30°C or requires 60mA input current, EL816 must be used.