EL816(B)-V Equivalent & Substitute Parts

Part Overview

The EL816(B)-V is an optoisolator with transistor output manufactured by Everlight Electronics Co Ltd. This component provides 5000Vrms isolation in a 4-DIP through-hole package, designed for single-channel DC input applications with 50mA output current capability. The part is currently active in production with 669 pieces in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to availability constraints, design flexibility, or supply chain considerations.

Substiute Parts

EL816(B)-V

Everlight Electronics Co LtdIn Stock: 688EL816(B)-V Datasheet

Current PartRFQ

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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VO618A-3

Vishay Semiconductor Opto DivisionIn Stock: 5464VO618A-3 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the EL816(B)-V is determined by the following criteria:

Primary Compatibility Requirements:

• Isolation voltage rating of 5000Vrms or higher
• Single-channel configuration
• Transistor output topology
• Maximum output voltage of 80V or greater
• Output current capability of 50mA or greater
• Operating temperature range encompassing -55°C to 110°C
• 4-DIP package footprint (0.300", 7.62mm)
• Through-hole mounting type

Secondary Compatibility Factors:

• Input type: DC
• Forward voltage (Vf) within typical range of 1.1V to 1.2V
• Maximum forward current (If) of 60mA
• RoHS3 compliance or equivalent environmental certification

All identified substitute parts meet these criteria and are functionally interchangeable in applications designed for the EL816(B)-V.

Parameter Comparison

Engineering Selection Recommendations

Through-Hole DIP Package Substitutes (Direct PCB Compatibility):

TLP785(F), TLP785(Y,F), and VO618A-3 are through-hole 4-DIP optoisolators that maintain identical footprint compatibility with the EL816(B)-V. All three parts are active products with RoHS3 or equivalent compliance. Selection among these three depends on current transfer ratio requirements and switching speed specifications for the application.

Surface Mount Alternative:

TLP785(GR-TP6,F) is a surface-mount variant in 4-SMD gull-wing package. This part is not mechanically compatible with through-hole PCB designs but offers the highest inventory availability (13,874 pieces) and identical electrical isolation and output specifications. This option applies only to designs using surface-mount assembly processes.

Electrical Performance Considerations:

The EL816(B)-V exhibits a minimum current transfer ratio of 130% at 5mA input, which is higher than TLP785(F) and TLP785(Y,F) but lower than TLP785(GR-TP6,F). The VO618A-3 provides equivalent minimum CTR performance at a lower input current (1mA vs. 5mA). The EL816(B)-V has a lower maximum Vce saturation (200mV) compared to all substitutes (400mV), which may be significant in low-voltage output applications.

Compliance and Certification:

All substitute parts maintain ROHS3 compliance or equivalent environmental certification. Moisture sensitivity level is uniform across all options (MSL 1 - Unlimited). ECCN and HTSUS classifications are identical.

Frequently Asked Questions (FAQ)

Q: Can TLP785(GR-TP6,F) be used as a direct replacement for EL816(B)-V on existing PCBs?

A: No. TLP785(GR-TP6,F) is a surface-mount component in 4-SMD gull-wing package, while EL816(B)-V is through-hole 4-DIP. PCB footprints are not compatible. Through-hole substitutes are TLP785(F), TLP785(Y,F), or VO618A-3.

Q: What is the significance of the current transfer ratio (CTR) difference between EL816(B)-V and substitute parts?

A: CTR determines the output current for a given input current. EL816(B)-V has CTR of 130-260% at 5mA input. TLP785(F) ranges 50-600%, TLP785(Y,F) ranges 50-150%, TLP785(GR-TP6,F) ranges 100-300%, and VO618A-3 ranges 100-200% at 1mA. Applications requiring specific output current levels must verify CTR specifications against design requirements.

Q: Are all substitute parts rated for the same isolation voltage?

A: EL816(B)-V, TLP785(F), TLP785(Y,F), and TLP785(GR-TP6,F) are all rated at 5000Vrms isolation. VO618A-3 is rated at 5300Vrms, which exceeds the EL816(B)-V specification and is therefore compatible for isolation-critical applications.

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

A: Both are through-hole 4-DIP packages from Toshiba with identical electrical isolation and output specifications. The primary difference is the current transfer ratio range: TLP785(F) ranges 50-600% while TLP785(Y,F) ranges 50-150% at 5mA input. Selection depends on the specific CTR requirement of the application.

Q: Does the Vce saturation difference affect substitutability?

A: EL816(B)-V has maximum Vce saturation of 200mV, while all substitutes are rated at 400mV. In applications where output voltage drop is critical, the EL816(B)-V provides superior performance. However, all parts meet the 80V maximum output voltage specification and are functionally compatible in standard isolation applications.

Q: Which substitute part has the best inventory availability?

A: TLP785(GR-TP6,F) has the highest inventory with 13,874 pieces in stock. However, this is a surface-mount component. For through-hole applications, VO618A-3 offers the highest availability at 5,365 pieces.

Q: Are all parts suitable for the full -55°C to 110°C temperature range?

A: Yes. All substitute parts and the main part EL816(B)-V are rated for -55°C to 110°C operating temperature range.

Q: What is the moisture sensitivity level for these optoisolators?

A: All parts, including EL816(B)-V and all substitutes, have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.