HCPL-2730 Equivalent & Substitute Parts

Part Overview

The HCPL-2730 is a 2-channel optoisolator with Darlington output, rated for 3750Vrms isolation voltage. This component is designed for applications requiring galvanic isolation between logic and power circuits with high voltage isolation requirements. The part is currently in active production status. Substitute parts may be required due to inventory constraints, regional availability, or specific compliance requirements for end applications.

Substiute Parts

HCPL-2730

Broadcom LimitedIn Stock: 1381HCPL-2730 Datasheet

Current PartRFQ

HCPL-2730-000E

Broadcom LimitedIn Stock: 1423HCPL-2730-000E Datasheet

Parametric EquivalentRFQ

HCPL2730

onsemiIn Stock: 5575HCPL2730 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HCPL-2730 are classified based on electrical and mechanical compatibility. The primary substitution criteria are:

• Electrical Compatibility: Number of channels (2), output type (Darlington), maximum output voltage (7V), and output current per channel (60mA) must match or exceed the main part specifications.
• Isolation Voltage: Substitute parts must maintain minimum 3750Vrms isolation rating to preserve circuit safety margins.
• Current Transfer Ratio: Minimum 300% @ 1.6mA ensures functional equivalence in signal transfer.
• Package Compatibility: 8-DIP through-hole package with 0.300" (7.62mm) pitch is required for direct PCB substitution.
• Compliance Status: RoHS and REACH compliance may vary between substitutes and should be verified against application requirements.

Parameter Comparison

Engineering Selection Recommendations

HCPL-2730-000E (Broadcom Limited) is the primary parametric equivalent. This part maintains identical electrical specifications including 3750Vrms isolation voltage, 2-channel Darlington output, and 8-DIP package configuration. The key distinction is ROHS3 compliance, making this substitute suitable for applications with RoHS requirements. Product status is active with confirmed inventory availability.

HCPL2730 (onsemi) is a direct manufacturer alternative with the same base part designation. This part carries a critical specification deviation: isolation voltage is rated at 2500Vrms compared to the 3750Vrms of the main part. This 1250Vrms reduction in isolation rating represents a material change in circuit safety margin and must be evaluated against application voltage stress requirements. The part is marked obsolete and should not be selected for new designs. Operating temperature range extends to -40°C ~ 85°C, providing wider thermal coverage than the main part.

Selection between HCPL-2730 and HCPL-2730-000E depends on RoHS compliance mandates. For applications requiring ROHS3 certification, HCPL-2730-000E is the appropriate choice. The onsemi HCPL2730 is suitable only for legacy system maintenance where the reduced isolation voltage is acceptable and where obsolete part availability is confirmed.

Frequently Asked Questions (FAQ)

Q: Can HCPL2730 (onsemi) be used as a direct replacement for HCPL-2730?

A: No. While both parts share the same base designation and identical channel count, output type, and current ratings, the onsemi version has a 2500Vrms isolation rating versus 3750Vrms for the Broadcom HCPL-2730. This 33% reduction in isolation voltage creates a lower safety margin in high-voltage isolation applications. Additionally, the onsemi part is obsolete and not recommended for new designs.

Q: What is the difference between HCPL-2730 and HCPL-2730-000E?

A: Both parts are manufactured by Broadcom Limited and share identical electrical specifications: 3750Vrms isolation, 2-channel Darlington output, 8-DIP package, and all key performance parameters. The primary difference is RoHS compliance status. HCPL-2730-000E is ROHS3 compliant, while HCPL-2730 is RoHS non-compliant. Selection depends on application compliance requirements.

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, enabling direct PCB substitution without layout modifications.

Q: What parameters must match for a valid substitution?

A: Critical parameters for substitution are: 2-channel configuration, Darlington output type, 7V maximum output voltage, 60mA output current per channel, 8-DIP package, and minimum 3750Vrms isolation voltage. Current transfer ratio must meet or exceed 300% @ 1.6mA.

Q: Can HCPL-2730 be used in applications requiring extended temperature range?

A: The HCPL-2730 is rated for 0°C ~ 70°C operation. Applications requiring -40°C ~ 85°C operation would require evaluation of the onsemi HCPL2730, though the reduced isolation voltage must be assessed for compatibility with circuit requirements.