EL816(A) Optoisolator Equivalent & Substitute Parts

Part Overview

The EL816(A) 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(A) is packaged in a 4-DIP through-hole configuration with a single isolation channel and 50mA output current capability. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, design flexibility, or supply chain considerations.

Substiute Parts

EL816(A)

Everlight Electronics Co LtdIn Stock: 1147EL816(A) 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(A) are qualified based on the following criteria:

Electrical Equivalence Parameters:

• Isolation voltage of 5000Vrms
• Single channel configuration
• Transistor output topology
• Maximum output voltage of 80V
• Maximum output current of 50mA per channel
• DC input type
• Operating temperature range of -55°C to 110°C

Mechanical Compatibility Parameters:

• Package case type (4-DIP or 4-SMD variants)
• Mounting type (through-hole or surface-mount)
• Pin configuration compatibility

Compliance Parameters:

• RoHS compliance status
• Active product status

The TLP785 series from Toshiba Semiconductor and Storage meets these substitution criteria across three variants: TLP785(Y,F), TLP785(F), and TLP785(GR-TP6,F). Each variant maintains the core electrical specifications while offering different packaging and current transfer ratio ranges.

Parameter Comparison

Engineering Selection Recommendations

For Through-Hole PCB Assembly (Direct Pin-Compatible Substitutes):

TLP785(Y,F) and TLP785(F) are pin-compatible through-hole 4-DIP alternatives to the EL816(A). Both maintain identical package dimensions (0.300", 7.62mm) and mounting type. TLP785(Y,F) offers a current transfer ratio range of 50% to 150% at 5mA, while TLP785(F) provides a wider range of 50% to 600% at 5mA. Both are RoHS compliant and available in tube packaging. The EL816(A) exhibits a Vce saturation maximum of 200mV compared to 400mV for both TLP785 variants, representing a performance difference in output transistor saturation characteristics.

For Surface-Mount PCB Assembly:

TLP785(GR-TP6,F) is a surface-mount variant in 4-SMD gull-wing package configuration. This part maintains electrical equivalence with 5000Vrms isolation, 80V maximum output voltage, and 50mA output current. The current transfer ratio range is 100% to 300% at 5mA. This variant is supplied in tape and reel (TR) packaging and is RoHS compliant. The surface-mount configuration requires different PCB layout and assembly processes compared to through-hole mounting.

Compliance and Availability:

All substitute parts maintain ROHS3 or RoHS compliance status and MSL rating of 1 (Unlimited). The EL816(A) has 1094 units in stock, while TLP785(Y,F) has 966 units, TLP785(F) has 2332 units, and TLP785(GR-TP6,F) has 13874 units available. All parts are classified as active products.

Frequently Asked Questions (FAQ)

Q: Can TLP785(F) be used as a direct replacement for EL816(A) in existing through-hole PCB designs?

A: Yes. TLP785(F) is a pin-compatible 4-DIP through-hole substitute with identical package dimensions (0.300", 7.62mm). Both parts maintain 5000Vrms isolation, 80V maximum output voltage, and 50mA output current specifications. No PCB layout modifications are required for this substitution.

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

A: Both are through-hole 4-DIP packages with identical electrical specifications for isolation voltage, output voltage, and output current. The primary difference is the current transfer ratio range: TLP785(Y,F) ranges from 50% to 150% at 5mA, while TLP785(F) ranges from 50% to 600% at 5mA. Both are supplied in tube packaging and are RoHS compliant.

Q: When should TLP785(GR-TP6,F) be selected instead of the through-hole variants?

A: TLP785(GR-TP6,F) should be selected for surface-mount PCB assembly processes. This variant uses a 4-SMD gull-wing package and is supplied in tape and reel (TR) format, which is optimized for automated pick-and-place assembly. Through-hole variants (TLP785(Y,F) and TLP785(F)) are not suitable for surface-mount applications.

Q: Are there differences in Vce saturation between EL816(A) and TLP785 substitutes?

A: Yes. The EL816(A) has a maximum Vce saturation of 200mV, while all TLP785 variants specify 400mV maximum. This represents a 2x difference in output transistor saturation voltage. Applications sensitive to output voltage drop characteristics should account for this parameter difference.

Q: Do all substitute parts meet the same temperature operating range as EL816(A)?

A: Yes. The EL816(A) and all three TLP785 variants operate across the identical temperature range of -55°C to 110°C.

Q: What is the significance of the current transfer ratio differences between parts?

A: Current transfer ratio (CTR) defines the ratio of output current to input current. The EL816(A) specifies 80% to 160% CTR at 5mA. TLP785(Y,F) specifies 50% to 150%, TLP785(F) specifies 50% to 600%, and TLP785(GR-TP6,F) specifies 100% to 300%. These ranges affect input current requirements for achieving specified output current levels. Applications with tight input current budgets should verify CTR specifications against circuit requirements.

Q: Are all parts RoHS compliant?

A: Yes. The EL816(A) is ROHS3 compliant. TLP785(Y,F) and TLP785(GR-TP6,F) are RoHS compliant, and TLP785(F) is ROHS3 compliant. All parts meet RoHS environmental compliance requirements.

Q: What packaging formats are available for each substitute?

A: TLP785(Y,F) and TLP785(F) are supplied in tube packaging for through-hole applications. TLP785(GR-TP6,F) is supplied in tape and reel (TR) format for surface-mount automated assembly. Tube packaging is suitable for manual or semi-automated insertion, while tape and reel format is optimized for high-volume automated assembly lines.