HCPL3700V Equivalent & Substitute Parts

Part Overview

The HCPL3700V is a 2500Vrms optoisolator with Darlington output configuration in 8-DIP through-hole packaging, manufactured by onsemi. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design support and procurement continuity. The part features single-channel isolation suitable for AC and DC input applications with 30mA output current capability and operating temperature range of -40°C to 85°C.

Substiute Parts

HCPL3700V

onsemiIn Stock: 1016HCPL3700V Datasheet

Current PartRFQ

HCPL3700VM

onsemiIn Stock: 1824HCPL3700VM Datasheet

MFR RecommendedRFQ

HCPL-3760

Broadcom LimitedIn Stock: 4215HCPL-3760 Datasheet

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HCPL-3760-000E

Broadcom LimitedIn Stock: 9562HCPL-3760-000E Datasheet

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HCPL-3760-060E

Broadcom LimitedIn Stock: 859HCPL-3760-060E Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the HCPL3700V is determined by the following critical parameters that must remain compatible:

• Package / Case: 8-DIP (0.300", 7.62mm) — physical and electrical pin compatibility
• Number of Channels: 1 — functional equivalence
• Output Type: Darlington — output stage configuration
• Voltage - Output (Max): 20V — maximum output voltage rating
• Current - Output / Channel: 30mA — output current capability
• Input Type: AC, DC — input signal compatibility
• Operating Temperature: -40°C ~ 85°C — thermal operating range
• Mounting Type: Through Hole — assembly compatibility

Substitute parts are grouped based on isolation voltage rating, which may be equal to or exceed the original specification. The HCPL3700V operates at 2500Vrms isolation. Acceptable substitutes maintain all other electrical and mechanical parameters while offering equal or higher isolation voltage ratings.

Parameter Comparison

Engineering Selection Recommendations

HCPL3700VM (onsemi) — Manufacturer-recommended substitute. Active product status ensures ongoing availability and support. Maintains onsemi manufacturing lineage with identical electrical performance characteristics (turn-on/turn-off and rise/fall times). Isolation voltage increased to 5000Vrms, providing enhanced margin above the original 2500Vrms specification. ROHS3 compliant. Bulk packaging available.

HCPL-3760, HCPL-3760-000E, HCPL-3760-060E (Broadcom Limited) — Cross-manufacturer alternatives with active product status. All three variants share identical electrical specifications at 3750Vrms isolation voltage, exceeding the original 2500Vrms requirement. Faster switching characteristics (4.5µs turn-on, 8µs turn-off) compared to the original part. Faster rise/fall times (14µs, 0.4µs) indicate improved transient response. ROHS3 compliant. Tube packaging. Variants differ by packaging configuration and inventory levels.

All substitute parts maintain full compatibility with the original HCPL3700V in terms of package footprint, pin configuration, output current rating, maximum output voltage, input signal types, and operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can HCPL3700VM directly replace HCPL3700V in existing designs?

A: Yes. HCPL3700VM maintains identical pin configuration, package dimensions (8-DIP 0.300"), output current (30mA), maximum output voltage (20V), and operating temperature range (-40°C to 85°C). The increased isolation voltage (5000Vrms vs. 2500Vrms) is a design improvement with no negative impact on circuit compatibility.

Q: What are the differences between HCPL-3760 variants (standard, -000E, -060E)?

A: All three HCPL-3760 variants (HCPL-3760, HCPL-3760-000E, HCPL-3760-060E) share identical electrical specifications and package configuration. Variant designations reflect different packaging and temperature code options. Selection should be based on procurement availability and packaging requirements (tube format).

Q: How does the Broadcom HCPL-3760 compare to the onsemi HCPL3700VM?

A: Both are functionally compatible substitutes. HCPL3700VM offers identical switching times to the original HCPL3700V (6µs turn-on, 25µs turn-off). HCPL-3760 provides faster switching (4.5µs turn-on, 8µs turn-off) and faster rise/fall times, which may improve circuit performance in timing-sensitive applications. Isolation voltage is higher in both (5000Vrms and 3750Vrms respectively vs. 2500Vrms original).

Q: Are all substitutes ROHS3 compliant?

A: Yes. HCPL3700V, HCPL3700VM, and all HCPL-3760 variants are ROHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing.

Q: What is the impact of higher isolation voltage ratings in substitute parts?

A: Higher isolation voltage ratings (5000Vrms for HCPL3700VM, 3750Vrms for HCPL-3760 series vs. 2500Vrms for HCPL3700V) provide increased safety margin and design flexibility. No negative impact occurs in applications designed for the lower voltage rating; the higher rating simply offers additional isolation capability.

Q: Can I use HCPL-3760 variants interchangeably?

A: Yes. HCPL-3760, HCPL-3760-000E, and HCPL-3760-060E are electrically and mechanically identical. Selection is based on packaging format and inventory availability from your supplier.