HCPL2730SV Equivalent & Substitute Parts

Part Overview

The HCPL2730SV is a 2-channel optoisolator with Darlington output manufactured by onsemi, rated for 2500Vrms isolation voltage. This component is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The part features 2 isolated channels with Darlington output configuration, suitable for applications requiring galvanic isolation in low-to-medium voltage switching circuits.

Substiute Parts

HCPL2730SV

onsemiIn Stock: 983HCPL2730SV Datasheet

Current PartRFQ

HCPL-273L-500E

Broadcom LimitedIn Stock: 781HCPL-273L-500E Datasheet

SimilarRFQ

HCPL-4731#300

Broadcom LimitedIn Stock: 1135HCPL-4731#300 Datasheet

SimilarRFQ

HCPL-4731-320E

Broadcom LimitedIn Stock: 875HCPL-4731-320E Datasheet

SimilarRFQ

HCPL2730S

Fairchild SemiconductorIn Stock: 2300HCPL2730S Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HCPL2730SV are grouped into two categories based on electrical and mechanical compatibility:

Parametric Equivalent (Direct Replacement): HCPL2730S maintains identical electrical specifications including 2500Vrms isolation voltage, 300% minimum current transfer ratio at 1.6mA, 7V maximum output voltage, and 60mA output current per channel. This part is functionally interchangeable with the original HCPL2730SV and operates across the same temperature range (-40°C ~ 85°C).

Enhanced Isolation Alternatives: HCPL-273L-500E, HCPL-4731#300, and HCPL-4731-320E provide higher isolation voltage ratings (3750Vrms to 5000Vrms) while maintaining the 2-channel Darlington output configuration and 60mA output current specification. These parts are suitable for applications requiring greater isolation margins or operating in higher voltage environments. Key differences include higher current transfer ratios, faster switching times, and higher maximum output voltages (18V for HCPL-4731 series).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Obsolete Part Mitigation): HCPL2730S is the primary substitute for HCPL2730SV. Both parts share identical electrical specifications and operating temperature range. HCPL2730S is currently in active production status with higher inventory availability (2200 pcs), ensuring supply chain continuity. This part is suitable for designs requiring no circuit modifications.

For Enhanced Isolation Requirements: HCPL-4731-320E is recommended when designs require higher isolation voltage (5000Vrms) and extended output voltage capability (18V maximum). This part carries ROHS3 compliance certification. The operating temperature range is reduced to 0°C ~ 70°C, which must be verified against application requirements.

HCPL-4731#300 provides 3750Vrms isolation with similar enhanced specifications but carries RoHS non-compliant status. Selection depends on regulatory and compliance requirements for the end application.

HCPL-273L-500E offers 3750Vrms isolation with ROHS3 compliance and maintains the original operating temperature range of -40°C ~ 85°C, providing a middle-ground option between the original part and higher-voltage alternatives.

Frequently Asked Questions (FAQ)

Q: Can HCPL2730S be used as a direct replacement for HCPL2730SV? A: Yes. HCPL2730S is a parametric equivalent with identical isolation voltage (2500Vrms), current transfer ratio (300% @ 1.6mA), output voltage (7V maximum), and output current (60mA per channel). Both parts use the same 8-SMD Gull Wing package and operate across -40°C ~ 85°C.

Q: What are the key differences between HCPL2730S and HCPL-4731 series parts? A: HCPL-4731#300 and HCPL-4731-320E provide higher isolation voltage (3750Vrms and 5000Vrms respectively), higher maximum output voltage (18V vs 7V), and higher current transfer ratios (600-8000% @ 500µA vs 300% @ 1.6mA). Operating temperature is reduced to 0°C ~ 70°C for HCPL-4731 series.

Q: Are all substitute parts compatible with the original PCB layout? A: All listed substitutes use the 8-SMD Gull Wing package with surface mount configuration, maintaining mechanical compatibility with the original HCPL2730SV footprint.

Q: Which substitute part should be selected for new designs? A: HCPL2730S is recommended for designs matching the original HCPL2730SV specifications. For new designs with higher isolation requirements, HCPL-4731-320E (ROHS3 compliant, 5000Vrms) or HCPL-273L-500E (ROHS3 compliant, 3750Vrms, extended temperature range) are preferred based on isolation voltage and temperature requirements.

Q: What compliance certifications should be considered? A: HCPL-4731-320E and HCPL-273L-500E carry ROHS3 compliance. HCPL-4731#300 is RoHS non-compliant. All parts are REACH unaffected and classified as EAR99 for export control purposes.