HCPL-4661#300 Equivalent & Substitute Parts

Part Overview

The HCPL-4661#300 is a logic output optoisolator manufactured by Broadcom Limited, designed for high-speed digital isolation applications. This 2-channel device provides 3750Vrms isolation with open collector, Schottky clamped outputs and supports data rates up to 10MBd. The component is currently active in production and widely used in industrial control, power management, and communication interface circuits where galvanic isolation is required. Substitute parts are identified when electrical performance, mechanical compatibility, and functional specifications remain equivalent across the specified parameter range.

Substiute Parts

HCPL-4661#300

Broadcom LimitedIn Stock: 705HCPL-4661#300 Datasheet

Current PartRFQ

HCPL-4661-300E

Broadcom LimitedIn Stock: 5778HCPL-4661-300E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HCPL-4661#300 is determined by strict equivalence across the following critical parameters:

• Isolation Voltage: 3750Vrms (exact match required)
• Number of Channels: 2 channels (exact match required)
• Output Configuration: Open Collector, Schottky Clamped (exact match required)
• Common Mode Transient Immunity: 15kV/µs minimum (exact match required)
• Data Rate: 10MBd (exact match required)
• Package Type: 8-SMD, Gull Wing (exact match required)
• Voltage Supply Range: 4.5V ~ 5.5V (exact match required)
• Operating Temperature Range: -40°C ~ 85°C (exact match required)

The HCPL-4661-300E qualifies as a direct substitute based on identical electrical specifications, mechanical compatibility, and functional performance across all specified parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the HCPL-4661#300 and HCPL-4661-300E are active production components from Broadcom Limited with identical electrical and mechanical specifications. Selection between these parts should be based on the following compliance and certification factors:

The HCPL-4661-300E carries ROHS3 compliance certification, whereas the HCPL-4661#300 is RoHS non-compliant. For applications subject to RoHS regulatory requirements, the HCPL-4661-300E is the appropriate selection. Both parts maintain REACH Unaffected status and EAR99 export classification. Moisture sensitivity level is identical at MSL 1 (Unlimited) for both variants. Inventory availability should also be considered: HCPL-4661-300E currently maintains higher stock levels (5700 pcs) compared to HCPL-4661#300 (666 pcs).

Frequently Asked Questions (FAQ)

Q: Can HCPL-4661-300E be used as a direct replacement for HCPL-4661#300?

A: Yes. Both parts are manufactured by Broadcom Limited and share identical electrical specifications, isolation voltage, channel configuration, output type, data rate, propagation delay, supply voltage range, operating temperature range, and 8-SMD Gull Wing package. They are functionally and mechanically interchangeable.

Q: What is the primary difference between HCPL-4661#300 and HCPL-4661-300E?

A: The primary difference is RoHS compliance status. HCPL-4661-300E is ROHS3 compliant, while HCPL-4661#300 is RoHS non-compliant. Both parts are otherwise electrically and mechanically identical.

Q: Are there any package or pinout differences between these parts?

A: No. Both parts use the identical 8-SMD, Gull Wing package configuration with surface mount mounting type. Pinout and mechanical dimensions are equivalent.

Q: Which part should be selected for new designs?

A: For new designs subject to RoHS regulatory requirements, HCPL-4661-300E is the appropriate selection due to ROHS3 compliance. For applications without RoHS constraints, either part meets the functional requirements.

Q: Is there a difference in isolation voltage or CMTI performance?

A: No. Both parts provide 3750Vrms isolation voltage and 15kV/µs common mode transient immunity. Electrical isolation performance is identical.

Q: Can these parts be used interchangeably in existing PCB designs?

A: Yes. The identical 8-SMD Gull Wing package ensures mechanical and electrical compatibility. No PCB layout modifications are required for substitution.