HCPL-2502#300 Equivalent & Substitute Parts

Part Overview

The HCPL-2502#300 is a single-channel optoisolator with transistor output and base connection, rated for 3750Vrms isolation voltage. Manufactured by Broadcom Limited, this component is designed for high-speed signal isolation applications requiring galvanic isolation in industrial and telecommunications equipment. The part is currently discontinued at DiGi Electronics, necessitating identification of equivalent alternatives that maintain functional compatibility while meeting current availability and compliance requirements.

Substiute Parts

HCPL-2502#300

Broadcom LimitedIn Stock: 785HCPL-2502#300 Datasheet

Current PartRFQ

HCPL-2502-300E

Broadcom LimitedIn Stock: 675HCPL-2502-300E Datasheet

DirectRFQ

HCPL0453

Fairchild SemiconductorIn Stock: 3163HCPL0453 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HCPL-2502#300 are identified based on the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Single-channel optoisolator configuration
• DC input type
• Transistor output topology
• Surface mount packaging (8-pin configuration)
• Isolation voltage rating of 2500Vrms or higher
• Output voltage capability of 20V or greater
• Output current capability of 8mA or greater
• Operating temperature range encompassing or overlapping -55°C to 100°C
• Current transfer ratio performance within acceptable operational margins

Substitute Categories:

Direct Equivalent (HCPL-2502-300E): Identical electrical specifications and package configuration with improved product status and RoHS compliance.

Functional Alternative (HCPL0453): Meets core isolation and switching requirements with trade-offs in isolation voltage rating (2500Vrms vs. 3750Vrms) and current transfer ratio performance, suitable for applications not requiring maximum isolation voltage.

Parameter Comparison

Engineering Selection Recommendations

HCPL-2502-300E (Primary Substitute): Select this part as the preferred direct replacement for HCPL-2502#300. It maintains identical electrical specifications and package configuration while offering active product status and ROHS3 compliance. This substitute eliminates obsolescence risk and meets modern regulatory requirements without design modification.

HCPL0453 (Functional Alternative): Consider this part only when isolation voltage requirements can be reduced to 2500Vrms. The HCPL0453 offers superior current transfer ratio performance (19-50% vs. 15-22%) and improved turn-off time (300ns vs. 600ns), providing faster switching characteristics. However, the narrower operating temperature range (-40°C to 85°C) and different package configuration (8-SOIC vs. 8-SMD) require circuit board layout verification and thermal analysis for applications operating below -40°C or above 85°C.

Frequently Asked Questions (FAQ)

Q: Can HCPL-2502-300E be used as a direct drop-in replacement for HCPL-2502#300?

A: Yes. The HCPL-2502-300E maintains identical electrical specifications, isolation voltage rating, current transfer ratio, switching times, and package configuration. The primary difference is product status (active vs. discontinued) and RoHS compliance (ROHS3 vs. non-compliant). No circuit modifications are required.

Q: What are the key differences between HCPL-2502#300 and HCPL0453?

A: The HCPL0453 has a lower isolation voltage rating (2500Vrms vs. 3750Vrms), higher current transfer ratio range (19-50% vs. 15-22%), faster turn-off time (300ns vs. 600ns), narrower operating temperature range (-40°C to 85°C vs. -55°C to 100°C), and different package configuration (8-SOIC vs. 8-SMD). Applications requiring 3750Vrms isolation or operation below -40°C must use HCPL-2502-300E.

Q: Is the HCPL0453 package compatible with HCPL-2502#300 PCB layouts?

A: No. The HCPL0453 uses 8-SOIC packaging (0.154" width) while HCPL-2502#300 uses 8-SMD with gull wing leads. PCB footprint modification is required for HCPL0453 implementation.

Q: What is the impact of the lower isolation voltage rating on HCPL0453 applications?

A: The 2500Vrms rating of HCPL0453 is suitable for applications with isolation requirements below 2500Vrms. Applications requiring 3750Vrms isolation for safety or regulatory compliance must use HCPL-2502-300E to maintain the specified isolation margin.

Q: Are there temperature range limitations when substituting with HCPL0453?

A: Yes. The HCPL0453 operating range is -40°C to 85°C, compared to -55°C to 100°C for HCPL-2502#300. Applications requiring operation below -40°C or above 85°C must use HCPL-2502-300E.