HCPL2531V Equivalent & Substitute Parts

Part Overview

The HCPL2531V is a 2-channel optoisolator with transistor output manufactured by onsemi, rated for 2500Vrms isolation voltage. This component is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. The HCPL2531V operates in Through Hole 8-DIP packaging and is suitable for applications requiring galvanic isolation with DC input and transistor output configuration.

Substiute Parts

HCPL2531V

onsemiIn Stock: 1103HCPL2531V Datasheet

Current PartRFQ

HCPL2531VM

onsemiIn Stock: 2084HCPL2531VM Datasheet

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HCPL-2533

Broadcom LimitedIn Stock: 3235HCPL-2533 Datasheet

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HCPL-2533-000E

Broadcom LimitedIn Stock: 2595HCPL-2533-000E Datasheet

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HCPL-253L-000E

Broadcom LimitedIn Stock: 777HCPL-253L-000E Datasheet

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HCPL-4534-000E

Broadcom LimitedIn Stock: 5761HCPL-4534-000E Datasheet

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TLP2530(F)

Toshiba Semiconductor and StorageIn Stock: 4416TLP2530(F) Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the HCPL2531V is determined by the following critical parameters:

• Number of Channels: Must be 2 channels
• Package Type: Must be 8-DIP (0.300", 7.62mm) for mechanical compatibility
• Mounting Type: Must be Through Hole
• Output Type: Must be Transistor
• Input Type: Must be DC
• Voltage - Isolation: Minimum 2500Vrms (equal or higher isolation voltage acceptable)
• Current - Output / Channel: Must support 8mA minimum
• Voltage - Output (Max): Must support 20V minimum
• Operating Temperature Range: Must encompass -55°C ~ 100°C or be compatible with application requirements

Substitute parts are grouped into two categories:

Direct Manufacturer Upgrade: HCPL2531VM (onsemi) provides higher isolation voltage (5000Vrms) with improved switching performance while maintaining identical channel count, package, and output specifications.

Cross-Manufacturer Alternatives: HCPL-2533, HCPL-2533-000E, HCPL-253L-000E, HCPL-4534-000E, and TLP2530(F) meet the core electrical and mechanical requirements with variations in isolation voltage, switching speed, and compliance status.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: HCPL2531VM

The HCPL2531VM is the manufacturer-recommended upgrade from onsemi. It maintains identical channel count, package, and output voltage specifications while providing enhanced isolation voltage (5000Vrms) and improved switching performance (250ns turn-on, 260ns turn-off). This part is in active production status with ROHS3 compliance. The only consideration is the reduced operating temperature minimum (-40°C vs. -55°C), which is acceptable for most industrial applications.

Secondary Recommendations for Active Production Parts:

HCPL-2533-000E and HCPL-253L-000E (Broadcom Limited) are active production alternatives with 3750Vrms isolation. HCPL-2533-000E provides baseline performance, while HCPL-253L-000E offers improved switching speed (200ns turn-on, 600ns turn-off) and current transfer ratio matching the original part. Both maintain full operating temperature range (-55°C ~ 100°C) and ROHS3 compliance.

HCPL-4534-000E (Broadcom Limited) supports the full 20V output voltage specification and offers improved switching performance. It is ROHS3 compliant and maintains the full operating temperature range.

Compatibility Constraints:

HCPL-2533 (non-000E variant) is RoHS non-compliant and should be avoided for new designs requiring regulatory compliance.

TLP2530(F) (Toshiba) matches the original isolation voltage (2500Vrms) but is obsolete and exhibits lower current transfer ratio (7% minimum). This part should be considered only when isolation voltage requirements are critical and other alternatives are unavailable.

Frequently Asked Questions (FAQ)

Q: Can HCPL2531VM directly replace HCPL2531V without circuit modification?

A: Yes. The HCPL2531VM maintains identical pinout, channel count, output voltage rating (20V), and output current (8mA). The higher isolation voltage (5000Vrms vs. 2500Vrms) and faster switching times are backward compatible. The reduced minimum operating temperature (-40°C vs. -55°C) must be verified against application requirements.

Q: Why do HCPL-2533 variants have lower maximum output voltage (7V vs. 20V)?

A: The HCPL-2533 series is designed for lower voltage output applications. Circuits requiring 20V output must use HCPL2531VM, HCPL-4534-000E, or TLP2530(F).

Q: Are all substitute parts available in the same 8-DIP package?

A: Yes. All listed substitute parts use the 8-DIP (0.300", 7.62mm) Through Hole package, ensuring mechanical compatibility with existing PCB layouts.

Q: What is the impact of different current transfer ratios on circuit design?

A: Current transfer ratio determines the output current for a given input current. Parts with lower minimum CTR (such as TLP2530(F) at 7%) require higher input drive current to achieve the same output. Circuit design must account for the specific CTR range of the selected part.

Q: Which substitute part is recommended for new designs?

A: HCPL2531VM is the recommended choice for new designs. It is in active production, ROHS3 compliant, and provides superior performance characteristics while maintaining full compatibility with HCPL2531V circuit designs.

Q: Can HCPL-2533 non-compliant variant be used in RoHS-regulated applications?

A: No. HCPL-2533 (without -000E designation) is RoHS non-compliant. Use HCPL-2533-000E or HCPL-253L-000E for applications requiring RoHS3 compliance.