EL817(D)-V Optoisolator Equivalent & Substitute Parts

Part Overview

The EL817(D)-V 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 through-hole package. The device is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part specifications, enabling direct replacement in circuit applications without design modification.

Substiute Parts

EL817(D)-V

Everlight Electronics Co LtdIn Stock: 792EL817(D)-V Datasheet

Current PartRFQ

EL817(D)

Everlight Electronics Co LtdIn Stock: 1211EL817(D) Datasheet

Parametric EquivalentRFQ

140817140410

Würth ElektronikIn Stock: 1103140817140410 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the EL817(D)-V are qualified based on strict parametric equivalence across the following critical criteria:

Isolation Voltage: All substitutes maintain 5000Vrms isolation rating, ensuring equivalent safety and regulatory compliance in high-voltage isolation applications.

Channel Configuration: Single-channel architecture is preserved across all substitute parts, maintaining identical circuit topology requirements.

Current Transfer Ratio: Minimum 300% and maximum 600% @ 5mA specifications are matched across all alternatives, ensuring consistent optical coupling efficiency.

Output Characteristics: Transistor output type, maximum output voltage of 35V, output current of 50mA per channel, and Vce saturation maximum of 200mV are identical across all parts.

Thermal Range: Operating temperature range of -55°C to 110°C is consistent, supporting equivalent environmental performance.

Package Specification: All substitutes use 4-DIP through-hole package with 0.300" (7.62mm) pitch, enabling direct PCB footprint compatibility.

Input Type: DC input specification is maintained across all alternatives.

Compliance Status: All parts maintain RoHS3 compliance and MSL 1 rating, supporting equivalent regulatory and manufacturing requirements.

Parameter Comparison

Engineering Selection Recommendations

EL817(D) - Everlight Electronics Co Ltd variant of the base product. Identical electrical and mechanical specifications to EL817(D)-V with Active product status and full RoHS3 compliance. This part represents a direct parametric equivalent with no design considerations required for substitution.

140817140410 - Würth Elektronik WL-OCPT series optoisolator. Meets all critical parametric requirements with 5000Vrms isolation, matching current transfer ratio range, identical output specifications, and 4-DIP through-hole package. Forward voltage specification shows 1.24V typical versus 1.2V for Everlight parts, representing a minor variance within acceptable tolerance for DC input applications. Active product status and RoHS3 compliance confirm ongoing manufacturing support and regulatory alignment.

All three parts maintain identical isolation voltage, channel count, output current capability, saturation characteristics, and thermal operating range. Package footprint compatibility is confirmed across all alternatives. Selection between these parts may be based on supplier availability, lead time, or established procurement relationships, as electrical performance is equivalent.

Frequently Asked Questions (FAQ)

Q: Can EL817(D) directly replace EL817(D)-V in existing designs?

A: Yes. EL817(D) is parametrically identical to EL817(D)-V across all specified electrical and mechanical parameters. Both are manufactured by Everlight Electronics Co Ltd with identical isolation voltage (5000Vrms), current transfer ratio (300-600% @ 5mA), output specifications (35V max, 50mA per channel), and 4-DIP through-hole package. No circuit modification is required.

Q: Is the Würth Elektronik 140817140410 compatible with EL817(D)-V applications?

A: Yes. The 140817140410 meets all critical parametric specifications: 5000Vrms isolation, 300-600% current transfer ratio @ 5mA, 35V maximum output voltage, 50mA output current, 200mV Vce saturation, and 4-DIP through-hole package. The forward voltage specification of 1.24V typical (versus 1.2V for Everlight) represents a minor variance acceptable for DC input optoisolator applications. Direct PCB footprint compatibility is confirmed.

Q: What parameters determine substitution eligibility for EL817(D)-V?

A: Substitution is based on matching: isolation voltage (5000Vrms), single-channel configuration, current transfer ratio range (300-600% @ 5mA), transistor output type, maximum output voltage (35V), output current per channel (50mA), Vce saturation (200mV maximum), operating temperature range (-55°C to 110°C), 4-DIP through-hole package, and DC input type. All substitute parts meet these criteria.

Q: Are there package or mounting differences between these optoisolators?

A: No. All three parts use identical 4-DIP through-hole package with 0.300" (7.62mm) pitch. Mounting type is through-hole for all alternatives, ensuring direct PCB compatibility without layout modification.

Q: Do all substitute parts have equivalent compliance certifications?

A: Yes. EL817(D), EL817(D)-V, and 140817140410 all maintain RoHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating. All parts are classified as Active product status with ongoing manufacturing support.

Q: What is the significance of the current transfer ratio specification?

A: Current transfer ratio (300-600% @ 5mA) defines the optical coupling efficiency between the LED input and transistor output. All substitute parts maintain identical minimum and maximum specifications, ensuring equivalent signal transfer characteristics and circuit performance across the specified input current range.

Q: Can these parts be used interchangeably in high-voltage isolation circuits?

A: Yes. All parts provide 5000Vrms isolation rating, supporting equivalent safety margins in high-voltage isolation applications. Electrical performance, thermal characteristics, and compliance status are identical across all alternatives.