HCPL2531M Equivalent & Substitute Parts

Part Overview

The HCPL2531M is an optoisolator with transistor output manufactured by onsemi, designed for high-voltage isolation applications. This 2-channel device provides 5000Vrms isolation with DC input and transistor output configuration in an 8-DIP through-hole package. The part is currently in active production status with 12,300 units in stock. Alternative models may be required due to inventory constraints, supply chain considerations, or specific application requirements within the same electrical and mechanical parameter range.

Substiute Parts

HCPL2531M

onsemiIn Stock: 12339HCPL2531M Datasheet

Current PartRFQ

HCPL2531VM

onsemiIn Stock: 2084HCPL2531VM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HCPL2531M is determined by strict equivalence across the following critical parameters:

• Isolation Voltage: 5000Vrms (mandatory match)
• Channel Configuration: 2 channels (mandatory match)
• Input/Output Type: DC input with transistor output (mandatory match)
• Package Type: 8-DIP through-hole (mandatory match)
• Electrical Performance: Current transfer ratio range 19–50% @ 16mA, output voltage maximum 20V, output current 8mA per channel (mandatory match)
• Operating Temperature Range: -40°C ~ 100°C (mandatory match)
• Compliance: ROHS3 compliant, REACH unaffected status (mandatory match)

The HCPL2531VM meets all substitution criteria as a parametric equivalent within the HCPL2531 base product family.

Parameter Comparison

Engineering Selection Recommendations

Both HCPL2531M and HCPL2531VM are active production parts from onsemi with identical electrical and mechanical specifications. Selection between these parts is based on availability and supply chain requirements rather than technical differentiation. Both parts maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for industrial and commercial applications. The 8-DIP through-hole package ensures compatibility with existing PCB designs and assembly processes. Current inventory levels (12,300 units for HCPL2531M and 1,998 units for HCPL2531VM) should be considered in procurement planning.

Frequently Asked Questions (FAQ)

Q: Can HCPL2531VM be used as a direct replacement for HCPL2531M?

A: Yes. The HCPL2531VM is a parametric equivalent with identical electrical performance, isolation voltage, channel configuration, package type, and compliance certifications. Direct substitution is supported without circuit modification.

Q: Are there any differences in the 8-DIP package dimensions between these parts?

A: No. Both parts use the same 8-DIP (0.300", 7.62mm) through-hole package specification. PCB footprints and assembly processes are identical.

Q: Do both parts meet the same regulatory compliance standards?

A: Yes. Both HCPL2531M and HCPL2531VM are ROHS3 compliant and REACH unaffected, meeting the same regulatory requirements.

Q: What is the significance of the current transfer ratio range (19–50% @ 16mA)?

A: The current transfer ratio defines the relationship between input LED current and output transistor current. Both parts maintain the same 19–50% range at 16mA input, ensuring consistent signal isolation performance across the specified operating range.

Q: Are there temperature-related performance differences between these substitutes?

A: No. Both parts operate across the identical temperature range of -40°C to 100°C with the same electrical specifications maintained throughout this range.

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

A: Yes. Both parts provide 5000Vrms isolation voltage, suitable for applications requiring galvanic isolation between high-voltage and low-voltage circuits.