HCPL-4506 Equivalent & Substitute Parts

Part Overview

The HCPL-4506 is a logic output optoisolator with open collector and Schottky clamped output, manufactured by Broadcom Limited. This single-channel device provides 3750Vrms isolation with 15kV/µs common mode transient immunity in an 8-DIP through-hole package. The component is currently active in production. Substitute parts are identified when equivalent electrical isolation, channel configuration, output topology, and package specifications are maintained across the optoisolator product category.

Substiute Parts

HCPL-4506

Broadcom LimitedIn Stock: 2226HCPL-4506 Datasheet

Current PartRFQ

HCPL-4506-000E

Broadcom LimitedIn Stock: 20188HCPL-4506-000E Datasheet

MFR RecommendedRFQ

HCPL4503M

onsemiIn Stock: 6122HCPL4503M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HCPL-4506 are identified based on the following criteria:

Primary Substitution Criteria:

• Single-channel optoisolator configuration
• 8-DIP through-hole package (0.300", 7.62mm)
• Isolation voltage rating of 3750Vrms or higher
• Common mode transient immunity of 15kV/µs or higher
• Open collector or transistor output topology
• Operating temperature range of -40°C to 100°C or wider
• DC input type
• Supply voltage compatibility within 4.5V ~ 30V range

Identified Substitutes:

1. HCPL-4506-000E (Broadcom Limited) — Direct manufacturer variant with identical electrical specifications and package configuration. Differs only in RoHS compliance status (ROHS3 Compliant vs. RoHS non-compliant).

2. HCPL4503M (onsemi) — Single-channel optoisolator with transistor output and base connection. Provides higher isolation voltage (5000Vrms) and equivalent CMTI performance. Output topology differs (transistor with base vs. open collector), but maintains functional compatibility for applications requiring galvanic isolation with DC input and single-channel configuration in 8-DIP package.

Parameter Comparison

Engineering Selection Recommendations

HCPL-4506-000E is the primary direct substitute for HCPL-4506. Both parts are manufactured by Broadcom Limited with identical electrical specifications, isolation voltage, CMTI rating, output configuration, and package dimensions. The only distinction is RoHS compliance: HCPL-4506-000E meets ROHS3 requirements while the original HCPL-4506 does not. Selection of HCPL-4506-000E is appropriate for applications requiring RoHS3 compliance or when sourcing the original part becomes unavailable.

HCPL4503M (onsemi) is a functional substitute for applications where higher isolation voltage (5000Vrms vs. 3750Vrms) is beneficial or required. This part differs in output topology (transistor with base connection vs. open collector with Schottky clamp) and maximum output current (8mA vs. 15mA). HCPL4503M is suitable for designs that can accommodate transistor output characteristics and lower output current specifications. Both parts maintain single-channel configuration, 8-DIP package, DC input type, and -40°C to 100°C operating temperature range. HCPL4503M holds ROHS3 compliance status.

Frequently Asked Questions (FAQ)

Q: Can HCPL-4506-000E be used as a direct replacement for HCPL-4506?

A: Yes. HCPL-4506-000E is a direct substitute with identical electrical specifications, isolation voltage (3750Vrms), CMTI rating (15kV/µs), output configuration (open collector with Schottky clamp), current rating (15mA), and 8-DIP package. The parts differ only in RoHS compliance status.

Q: What are the key differences between HCPL-4506 and HCPL4503M?

A: Both are single-channel optoisolators in 8-DIP packages with DC input and -40°C to 100°C operating temperature. HCPL4503M provides higher isolation voltage (5000Vrms vs. 3750Vrms). The output topology differs: HCPL-4506 uses open collector with Schottky clamp, while HCPL4503M uses transistor with base connection. Maximum output current is lower on HCPL4503M (8mA vs. 15mA).

Q: Is HCPL4503M compatible with circuits designed for HCPL-4506?

A: Functional compatibility depends on circuit design. Both parts provide galvanic isolation with single-channel DC input in the same 8-DIP package. However, the different output topologies (open collector vs. transistor with base) and output current ratings (15mA vs. 8mA) require circuit verification. Applications with output current requirements exceeding 8mA or those specifically designed for open collector output may require circuit modification.

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

A: Yes. HCPL-4506, HCPL-4506-000E, and HCPL4503M are all supplied in 8-DIP (0.300", 7.62mm) through-hole packages with identical pin spacing and mounting requirements.

Q: Which substitute part should be selected for new designs?

A: For new designs, HCPL-4506-000E is recommended as the primary choice due to ROHS3 compliance and identical electrical specifications to HCPL-4506. HCPL4503M is suitable when higher isolation voltage (5000Vrms) is required and circuit design accommodates transistor output topology and lower output current (8mA maximum).