HCPL-2503#300 Equivalent & Substitute Parts

Part Overview

The HCPL-2503#300 is an optoisolator transistor with base output designed for high-voltage isolation applications. This component provides 3750Vrms isolation with a single channel configuration in an 8-DIP Gull Wing surface mount package. The part is discontinued at DiGi Electronics, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

HCPL-2503#300

Broadcom LimitedIn Stock: 889HCPL-2503#300 Datasheet

Current PartRFQ

HCPL-0501-000E

Broadcom LimitedIn Stock: 2151HCPL-0501-000E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HCPL-2503#300 is determined by the following critical parameters:

• Isolation Voltage: Must maintain 3750Vrms minimum isolation rating
• Number of Channels: Single channel configuration required
• Output Type: Transistor with base output configuration
• Input Type: DC input compatibility
• Current Transfer Ratio: Minimum 15% performance threshold
• Operating Temperature Range: -55°C to 100°C compatibility
• Mounting Type: Surface mount requirement
• Forward Voltage and Current: Input LED specifications (Vf 1.5V, If Max 25mA)

The HCPL-0501-000E qualifies as a direct substitute based on matching all critical isolation, channel, output type, and temperature specifications. Both components are manufactured by Broadcom Limited within the same optoisolator product family.

Parameter Comparison

Engineering Selection Recommendations

The HCPL-0501-000E is the manufacturer-recommended substitute for the discontinued HCPL-2503#300. Selection of this alternative is supported by:

• Functional Equivalence: All critical electrical parameters match or exceed the original specification, including isolation voltage, channel configuration, output type, and operating temperature range.
• Product Availability: The HCPL-0501-000E maintains active product status with established inventory supply, addressing the discontinuation of the original part.
• Compliance Improvement: The substitute achieves ROHS3 compliance, whereas the original part is RoHS non-compliant. This provides enhanced environmental and regulatory alignment for new designs and production runs.
• Package Consideration: The substitute uses an 8-SOIC package instead of 8-DIP Gull Wing. PCB layout and footprint modifications are required for implementation.
• Enhanced Output Voltage Rating: The HCPL-0501-000E provides a maximum output voltage of 20V compared to 7V in the original, offering greater design margin in output stage applications.

Frequently Asked Questions (FAQ)

Q: Can the HCPL-0501-000E be used as a direct pin-for-pin replacement?

A: The HCPL-0501-000E is functionally equivalent but not a pin-for-pin replacement. The original part uses an 8-DIP Gull Wing package, while the substitute uses an 8-SOIC package. PCB footprint redesign is required.

Q: What are the key electrical differences between these parts?

A: The primary electrical differences are the Current Transfer Ratio test condition (15% @ 16mA for the substitute versus 15% @ 8mA for the original) and the maximum output voltage (20V versus 7V). Both maintain identical isolation voltage, channel count, output type, and operating temperature range.

Q: Does the HCPL-0501-000E meet the same isolation requirements?

A: Yes. Both parts provide 3750Vrms isolation voltage and are designed for identical high-voltage isolation applications.

Q: What is the significance of the RoHS compliance difference?

A: The HCPL-0501-000E achieves ROHS3 compliance, making it suitable for applications with environmental and regulatory requirements. The original HCPL-2503#300 is RoHS non-compliant and may not meet current procurement standards for new designs.

Q: Are there any thermal or reliability considerations when switching to the substitute?

A: Both parts operate across the identical temperature range of -55°C to 100°C and share the same MSL rating of 1 (Unlimited). No additional thermal or reliability concerns are introduced by the substitution.

Q: What design changes are necessary to implement the HCPL-0501-000E?

A: The primary change is PCB footprint modification to accommodate the 8-SOIC package. Electrical circuit design remains unchanged due to functional equivalence of all critical parameters.