HCPL2531TVM Equivalent & Substitute Parts

Part Overview

The HCPL2531TVM is a 2-channel optoisolator with transistor output manufactured by onsemi, designed for high-voltage isolation applications requiring 5000Vrms isolation rating. This component features DC input, transistor output configuration, and operates across the industrial temperature range of -40°C to 100°C. The HCPL2531TVM is designated as Last Time Buy, making identification of equivalent and substitute parts essential for design continuity and long-term supply chain planning.

Substiute Parts

HCPL2531TVM

onsemiIn Stock: 795HCPL2531TVM Datasheet

Current PartRFQ

HCPL2531VM

onsemiIn Stock: 2084HCPL2531VM Datasheet

MFR RecommendedRFQ

HCPL2531TVM

Fairchild SemiconductorIn Stock: 2912HCPL2531TVM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HCPL2531TVM are identified based on strict electrical and mechanical parameter equivalence. The following criteria determine substitution validity:

Critical Equivalence Parameters:

• Number of Channels: 2
• Voltage - Isolation: 5000Vrms
• Current Transfer Ratio range: 19% to 50% @ 16mA
• Input Type: DC
• Output Type: Transistor
• Voltage - Output (Max): 20V
• Current - Output / Channel: 8mA
• Operating Temperature: -40°C ~ 100°C
• Mounting Type: Through Hole
• Base Product Number: HCPL2531

Substitutes are grouped into two categories: MFR Recommended (same manufacturer, active product status) and Parametric Equivalent (alternative manufacturer, matching electrical specifications).

Parameter Comparison

Engineering Selection Recommendations

HCPL2531VM (MFR Recommended Substitute): This onsemi part maintains full electrical parameter equivalence with the HCPL2531TVM while offering Active product status, ensuring continued availability and manufacturer support. ROHS3 compliance is confirmed. The primary design consideration is package pitch: HCPL2531VM uses 8-DIP (0.300", 7.62mm) versus the main part's 8-DIP (0.400", 10.16mm). PCB layout and footprint compatibility must be verified before implementation. This substitute is recommended for new designs and ongoing production requiring onsemi sourcing.

HCPL2531TVM (Parametric Equivalent - Fairchild Semiconductor): This alternative maintains complete electrical parameter equivalence and identical package dimensions (8-DIP 0.400", 10.16mm) to the main part, enabling direct PCB substitution without layout modification. Product status is Active. RoHS compliance status is not specified in available documentation. This option is suitable for applications where Fairchild Semiconductor sourcing is acceptable and package pitch compatibility is critical.

Frequently Asked Questions (FAQ)

Q: Can HCPL2531VM be used as a direct replacement for HCPL2531TVM?

A: HCPL2531VM is electrically equivalent across all specified parameters. However, the package pitch differs: HCPL2531VM uses 8-DIP (0.300", 7.62mm) while HCPL2531TVM uses 8-DIP (0.400", 10.16mm). PCB footprint compatibility must be confirmed before substitution.

Q: What is the difference between the two substitute parts?

A: HCPL2531VM is manufactured by onsemi (same as the main part) with Active product status and confirmed ROHS3 compliance. The Fairchild Semiconductor HCPL2531TVM offers identical electrical specifications and matching package dimensions but represents a different manufacturer source.

Q: Are all three parts pin-compatible?

A: All three parts share the same 8-DIP package type and electrical interface. Physical PCB compatibility depends on package pitch: the main part and Fairchild equivalent use 0.400" pitch, while HCPL2531VM uses 0.300" pitch.

Q: Why is the main part designated Last Time Buy?

A: Last Time Buy status indicates the manufacturer is discontinuing this specific part number. HCPL2531VM (Active status) is the recommended transition path for ongoing production requirements.

Q: Are compliance certifications equivalent across all three parts?

A: HCPL2531TVM and HCPL2531VM are both ROHS3 compliant. RoHS status for the Fairchild Semiconductor equivalent is not specified in available documentation and should be confirmed through the manufacturer datasheet.