EL817(M)-V Optoisolator Equivalent & Substitute Parts

Part Overview

The EL817(M)-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 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 are required for design flexibility, inventory management, or supply chain continuity while maintaining identical functional performance.

Substiute Parts

EL817(M)-V

Everlight Electronics Co LtdIn Stock: 1012EL817(M)-V Datasheet

Current PartRFQ

140817141010

Würth ElektronikIn Stock: 1036140817141010 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the EL817(M)-V is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Voltage - Isolation: 5000Vrms (mandatory match)
• Number of Channels: 1 (mandatory match)
• Current Transfer Ratio range: 50% (Min) @ 5mA and 600% (Max) @ 5mA (mandatory match)
• Output Type: Transistor (mandatory match)
• Voltage - Output (Max): 35V (mandatory match)
• Current - Output / Channel: 50mA (mandatory match)
• Vce Saturation (Max): 200mV (mandatory match)
• Operating Temperature Range: -55°C ~ 110°C (mandatory match)

Mechanical Equivalence Requirements:

• Package / Case: 4-DIP (0.400", 10.16mm) (mandatory match)
• Mounting Type: Through Hole (mandatory match)

Compliance Requirements:

• RoHS3 Compliant status (mandatory match)

Substitute parts must satisfy all electrical, mechanical, and compliance criteria simultaneously. Minor variations in forward voltage (Vf) and rise/fall time characteristics within the specified ranges do not disqualify substitution eligibility.

Parameter Comparison

Engineering Selection Recommendations

Both the EL817(M)-V and 140817141010 are Active product status components with full RoHS3 compliance and identical electrical and mechanical specifications. Selection between these parts is based on:

Availability and Supply Chain: The EL817(M)-V (Everlight) has 941 pieces in stock, while the 140817141010 (Würth Elektronik) has 1024 pieces in stock. Choose based on current inventory requirements and lead time constraints.

Packaging Format: The EL817(M)-V is supplied in standard packaging, while the 140817141010 is supplied in Tube packaging. Tube packaging may be preferred for automated assembly processes.

Regulatory and Compliance Status: Both parts carry identical ECCN (EAR99) and HTSUS (8541.49.8000) classifications. The 140817141010 includes explicit REACH Unaffected status documentation.

Forward Voltage Tolerance: The EL817(M)-V specifies 1.2V typical forward voltage, while the 140817141010 specifies 1.24V typical. This 0.04V difference is within acceptable tolerance for most circuit designs and does not affect substitution eligibility.

Rise/Fall Time Characteristics: The EL817(M)-V specifies 4µs rise time and 3µs fall time, while the 140817141010 specifies 3µs rise time and 4µs fall time. Both configurations meet identical switching performance requirements for the specified isolation voltage and output current rating.

Frequently Asked Questions (FAQ)

Q: Can the 140817141010 directly replace the EL817(M)-V in existing designs?

A: Yes. Both components meet identical electrical specifications for isolation voltage (5000Vrms), current transfer ratio (50-600% @ 5mA), output voltage (35V max), output current (50mA), and saturation voltage (200mV max). Both use identical 4-DIP through-hole packaging and operate across the same temperature range (-55°C to 110°C). No circuit modifications are required.

Q: Are there any differences in switching speed between these parts?

A: The rise and fall times are specified in opposite order. The EL817(M)-V specifies 4µs rise / 3µs fall, while the 140817141010 specifies 3µs rise / 4µs fall. Both configurations deliver equivalent switching performance within the specified isolation and current parameters.

Q: What is the significance of the packaging difference (standard vs. Tube)?

A: Tube packaging is a continuous reel format optimized for automated pick-and-place assembly. Standard packaging is suitable for manual handling and smaller production volumes. The electrical and mechanical specifications are identical; packaging choice depends on assembly process requirements.

Q: Do both parts require identical PCB footprints?

A: Yes. Both components use the 4-DIP (0.400", 10.16mm) package with through-hole mounting. PCB footprints, lead spacing, and hole diameters are identical. No PCB redesign is necessary when substituting between these parts.

Q: Are there any compliance or regulatory differences?

A: Both parts are RoHS3 compliant with MSL 1 (unlimited moisture sensitivity). Both carry identical ECCN (EAR99) and HTSUS (8541.49.8000) classifications. The 140817141010 includes explicit REACH Unaffected status, which may be relevant for specific regulatory documentation requirements.

Q: What is the current transfer ratio and how does it affect circuit design?

A: Both parts specify a current transfer ratio of 50% minimum to 600% maximum at 5mA input current. This ratio defines the relationship between input LED current and output transistor current. Circuit designs must account for this range when calculating input drive requirements and output load characteristics.

Q: Can these parts be used in high-temperature applications?

A: Both parts operate across -55°C to 110°C. Applications requiring operation above 110°C or below -55°C require alternative component selection outside this equivalence group.