EL816(D) Optoisolator Equivalent & Substitute Parts

Part Overview

The EL816(D) is a 5000Vrms isolation optoisolator with transistor output manufactured by Everlight Electronics Co Ltd. This component is classified as an active product and is designed for applications requiring galvanic isolation between input and output circuits. The EL816(D) is packaged in a 4-DIP through-hole configuration with a single isolation channel. Substitute parts are identified based on matching electrical isolation ratings, output characteristics, and mechanical compatibility within the optoisolator product category.

Substiute Parts

EL816(D)

Everlight Electronics Co LtdIn Stock: 7782EL816(D) Datasheet

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TLP785(F)

Toshiba Semiconductor and StorageIn Stock: 2426TLP785(F) Datasheet

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TLP785(GR-TP6,F)

Toshiba Semiconductor and StorageIn Stock: 13910TLP785(GR-TP6,F) Datasheet

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TLP785(Y,F)

Toshiba Semiconductor and StorageIn Stock: 1021TLP785(Y,F) Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the EL816(D) are identified based on the following criteria:

Primary Matching Parameters:

• Voltage - Isolation: 5000Vrms (exact match required)
• Number of Channels: 1 (exact match required)
• Output Type: Transistor (exact match required)
• Voltage - Output (Max): 80V (exact match required)
• Current - Output / Channel: 50mA (exact match required)
• Operating Temperature Range: -55°C ~ 110°C (exact match required)

Secondary Compatibility Factors:

• Input Type: DC (exact match required)
• Mounting Type: Through Hole or Surface Mount (package-dependent)
• Package / Case: 4-DIP or 4-SMD variants (determines mechanical fit)
• RoHS Compliance: ROHS3 or RoHS Compliant (regulatory requirement)

The Current Transfer Ratio (CTR) range varies among substitute parts. The EL816(D) specifies 300% to 600% @ 5mA. Substitute parts may have different CTR specifications while maintaining the same isolation voltage and output characteristics. This variation is acceptable within the optoisolator product category as long as the minimum CTR meets application requirements.

Parameter Comparison

Engineering Selection Recommendations

For Through-Hole PCB Assemblies:

TLP785(F) and TLP785(Y,F) are direct mechanical and electrical substitutes for the EL816(D) in through-hole applications. Both parts maintain the 4-DIP package configuration and are compatible with existing PCB layouts designed for the EL816(D). TLP785(F) offers a Current Transfer Ratio range of 50% to 600% @ 5mA, providing broader CTR coverage than the EL816(D). TLP785(Y,F) specifies a narrower CTR range of 50% to 150% @ 5mA. Both parts are RoHS compliant and maintain the same isolation voltage and output current ratings.

For Surface Mount PCB Assemblies:

TLP785(GR-TP6,F) is a surface mount variant packaged in 4-SMD gull wing configuration. This part is suitable for applications requiring surface mount technology and maintains all critical electrical parameters including 5000Vrms isolation, 80V maximum output voltage, and 50mA output current. The Current Transfer Ratio range is 100% to 300% @ 5mA. This part is not mechanically compatible with through-hole PCB designs.

Compliance and Regulatory Status:

All substitute parts maintain RoHS compliance and MSL Level 1 (Unlimited) moisture sensitivity rating. The EL816(D) is ROHS3 compliant. TLP785(F) is also ROHS3 compliant. TLP785(Y,F) and TLP785(GR-TP6,F) are RoHS compliant. All parts carry ECCN EAR99 classification and HTSUS code 8541.49.8000.

Frequently Asked Questions (FAQ)

Q: Can TLP785(F) replace EL816(D) in existing designs?

A: Yes. TLP785(F) is mechanically and electrically compatible with EL816(D) in through-hole applications. Both parts use the 4-DIP package, maintain 5000Vrms isolation, 80V maximum output voltage, and 50mA output current. The parts are pin-compatible and can be substituted directly on PCBs designed for the EL816(D).

Q: What is the difference between TLP785(F) and TLP785(Y,F)?

A: Both parts are 4-DIP through-hole optoisolators with identical mechanical packaging and isolation ratings. The primary difference is the Current Transfer Ratio specification. TLP785(F) specifies 50% to 600% @ 5mA, while TLP785(Y,F) specifies 50% to 150% @ 5mA. Selection depends on application requirements for CTR performance.

Q: Is TLP785(GR-TP6,F) compatible with EL816(D) PCB layouts?

A: No. TLP785(GR-TP6,F) is a surface mount component in 4-SMD gull wing package, while EL816(D) is a through-hole 4-DIP component. These parts are not mechanically compatible and require different PCB designs and assembly processes. TLP785(GR-TP6,F) is suitable only for new designs utilizing surface mount technology.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed are RoHS compliant. EL816(D) and TLP785(F) are specifically ROHS3 compliant. TLP785(Y,F) and TLP785(GR-TP6,F) are RoHS compliant. All parts meet regulatory requirements for hazardous substance restrictions.

Q: What are the key electrical parameters that must match for substitution?

A: The critical matching parameters are: Voltage - Isolation (5000Vrms), Number of Channels (1), Output Type (Transistor), Voltage - Output (Max) (80V), Current - Output / Channel (50mA), and Operating Temperature Range (-55°C ~ 110°C). These parameters determine functional equivalence in isolation applications.

Q: How does the Current Transfer Ratio affect substitution decisions?

A: Current Transfer Ratio (CTR) determines the efficiency of signal transfer across the isolation barrier. The EL816(D) specifies 300% to 600% @ 5mA. Substitute parts have different CTR ranges. Selection should be based on application requirements for signal integrity and switching performance. A lower minimum CTR may require higher input current to achieve the same output response.

Q: What is the significance of Vce Saturation differences?

A: Vce Saturation (Max) affects output voltage drop during transistor saturation. EL816(D) specifies 200mV maximum, while all TLP785 variants specify 400mV maximum. This difference impacts output voltage levels in switching applications. Applications sensitive to output voltage drop should account for this parameter variation.