EL817(D)-VG Equivalent & Substitute Parts

Part Overview

The EL817(D)-VG is an 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 package. The part is currently active in production with full inventory availability. Substitute parts are identified based on matching electrical characteristics, mechanical compatibility, and functional equivalence within the optoisolator transistor output category.

Substiute Parts

EL817(D)-VG

Everlight Electronics Co LtdIn Stock: 1165EL817(D)-VG Datasheet

Current PartRFQ

VO618A-2

Vishay Semiconductor Opto DivisionIn Stock: 4441VO618A-2 Datasheet

SimilarRFQ

VO618A-4

Vishay Semiconductor Opto DivisionIn Stock: 12873VO618A-4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the EL817(D)-VG are qualified based on the following criteria:

Electrical Compatibility:

• Isolation voltage rating equal to or greater than 5000Vrms
• Single channel configuration
• Transistor output type
• Maximum output voltage of 80V or greater
• Maximum output current of 50mA or greater
• Input type: DC
• Operating temperature range encompassing -55°C to 110°C

Mechanical Compatibility:

• Package type: 4-DIP (0.300", 7.62mm)
• Through hole mounting
• Supplier device package: 4-DIP

Regulatory Compliance:

• RoHS3 compliant
• Moisture sensitivity level 1 (unlimited)

The substitute parts VO618A-2 and VO618A-4 meet all electrical and mechanical requirements for direct substitution with the EL817(D)-VG.

Parameter Comparison

Engineering Selection Recommendations

VO618A-4 Primary Substitute: The VO618A-4 is the preferred substitute for the EL817(D)-VG. Both parts are active products with RoHS3 compliance and unlimited moisture sensitivity rating. The VO618A-4 provides higher isolation voltage (5300Vrms versus 5000Vrms), identical output voltage and current ratings, and matching operating temperature range. The current transfer ratio at 1mA (160% to 320%) provides functional equivalence for the EL817(D)-VG application space. Vce saturation is higher at 400mV compared to 200mV, and switching times are faster. Inventory availability for VO618A-4 is 12,850 pieces.

VO618A-2 Secondary Substitute: The VO618A-2 is a secondary substitute option. It meets all mechanical and regulatory requirements with 5300Vrms isolation voltage and identical package specifications. The current transfer ratio range (63% to 125% @ 1mA) is lower than the EL817(D)-VG, making it suitable for applications with different input current requirements. Inventory availability is 4,394 pieces.

Both substitute parts maintain through-hole 4-DIP package compatibility and support the same operating temperature range as the original component.

Frequently Asked Questions (FAQ)

Q: Can VO618A-4 directly replace EL817(D)-VG in existing designs? A: Yes. Both parts share identical package type (4-DIP), mounting method (through hole), output voltage (80V), output current (50mA), and operating temperature range (-55°C to 110°C). Pin-to-pin compatibility is maintained.

Q: What is the difference between VO618A-2 and VO618A-4? A: The primary difference is the current transfer ratio specification. VO618A-4 has a minimum CTR of 160% @ 1mA, while VO618A-2 has a minimum CTR of 63% @ 1mA. Both share identical isolation voltage (5300Vrms), output ratings, and package specifications.

Q: Does the higher isolation voltage of VO618A parts affect compatibility? A: No. Higher isolation voltage (5300Vrms versus 5000Vrms) is a superset specification and does not create incompatibility. The substitute parts exceed the isolation requirement of the original component.

Q: Are there differences in switching speed between these parts? A: Yes. The VO618A series has faster switching characteristics: turn-on time of 3µs and turn-off time of 2.3µs, compared to rise time of 6µs and fall time of 8µs for the EL817(D)-VG. This represents improved performance in the substitute parts.

Q: What is the significance of Vce saturation differences? A: The EL817(D)-VG has a maximum Vce saturation of 200mV, while VO618A parts specify 400mV maximum. This parameter affects output voltage drop in saturation. Applications sensitive to saturation voltage must account for this difference.

Q: Are all three parts RoHS3 compliant? A: Yes. The EL817(D)-VG, VO618A-2, and VO618A-4 are all RoHS3 compliant with moisture sensitivity level 1 (unlimited).

Q: Which substitute should be selected for new designs? A: Selection between VO618A-2 and VO618A-4 depends on input current requirements. VO618A-4 is recommended for applications requiring higher current transfer ratio performance. VO618A-2 is suitable for lower input current applications.