HCPL-073L#500 Equivalent & Substitute Parts

Part Overview

The HCPL-073L#500 is a 2-channel optoisolator with Darlington output, rated for 3750Vrms isolation voltage, manufactured by Broadcom Limited. This component is classified as discontinued at DiGi Electronics, which necessitates identification of equivalent and substitute parts for ongoing design requirements and procurement needs. The part operates with a current transfer ratio range of 300% to 2600% at 1.6mA input, making it suitable for high-isolation digital signal transmission applications in industrial and power management circuits.

Substiute Parts

HCPL-073L#500

Broadcom LimitedIn Stock: 948HCPL-073L#500 Datasheet

Current PartRFQ

HCPL-073L-500E

Broadcom LimitedIn Stock: 2217HCPL-073L-500E Datasheet

DirectRFQ

HCPL-070L-500E

Broadcom LimitedIn Stock: 2358HCPL-070L-500E Datasheet

Parametric EquivalentRFQ

FOD073L

Fairchild SemiconductorIn Stock: 4960FOD073L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HCPL-073L#500 is determined by the following critical parameters:

Direct Substitutes maintain identical electrical and mechanical specifications: 2-channel configuration, 3750Vrms isolation voltage, Darlington output topology, 60mA output current per channel, 8-SOIC package, and surface mount mounting type.

Parametric Equivalents satisfy the core functional requirements but differ in channel count or isolation voltage rating. These parts preserve the essential isolation characteristics and output drive capability while offering alternative configurations.

Manufacturer-Recommended Alternatives provide functionally equivalent performance through different manufacturers, with allowable variations in isolation voltage, current transfer ratio specifications, and operating temperature range, provided the output topology, package form factor, and mounting method remain compatible.

Parameter Comparison

Engineering Selection Recommendations

HCPL-073L-500E is the primary direct substitute for HCPL-073L#500. This part maintains identical electrical specifications including 2-channel configuration, 3750Vrms isolation voltage, and Darlington output characteristics. The HCPL-073L-500E is currently active in production with higher inventory availability (2200 pcs) and achieves ROHS3 compliance, addressing regulatory requirements that the original discontinued part does not meet. Packaging is available in Cut Tape and Digi-Reel formats, supporting both prototype and production workflows.

HCPL-070L-500E serves as a parametric equivalent when single-channel isolation is acceptable within the application design. This part preserves the 3750Vrms isolation voltage and identical Darlington output specifications but provides only 1 channel instead of 2. Selection of this part requires circuit redesign to accommodate the reduced channel count. The part is active with robust inventory (2334 pcs) and ROHS3 compliance.

FOD073L from Fairchild Semiconductor is a manufacturer-recommended alternative offering 2-channel Darlington output in the same 8-SOIC package. This part operates at 2500Vrms isolation voltage, which is lower than the original specification. The FOD073L exhibits superior current transfer ratio performance (400% to 7000% at 500µA) and faster switching times (5µs turn-on, 25µs turn-off). The extended operating temperature range (-40°C to 85°C) provides broader environmental compatibility. Selection of FOD073L requires verification that the reduced isolation voltage meets application safety and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can HCPL-073L-500E be used as a direct replacement for HCPL-073L#500?

A: Yes. HCPL-073L-500E is a direct substitute with identical electrical and mechanical specifications. Both parts feature 2 channels, 3750Vrms isolation, Darlington output, 60mA per-channel current, and 8-SOIC packaging. The primary difference is product status: HCPL-073L-500E is active in production while HCPL-073L#500 is discontinued.

Q: What is the key difference between HCPL-073L-500E and HCPL-070L-500E?

A: HCPL-070L-500E provides only 1 channel compared to the 2-channel configuration of HCPL-073L-500E. All other electrical parameters including isolation voltage, output type, and current ratings remain identical. Selection depends on whether the application requires single or dual-channel isolation.

Q: Is FOD073L compatible with designs using HCPL-073L#500?

A: FOD073L is mechanically compatible (8-SOIC package, surface mount) and functionally similar (2-channel Darlington output, 60mA per channel). However, the isolation voltage is reduced from 3750Vrms to 2500Vrms. Applications requiring the full 3750Vrms isolation rating must not substitute FOD073L without circuit redesign and safety re-evaluation.

Q: What are the RoHS compliance implications?

A: HCPL-073L#500 is RoHS non-compliant. Both HCPL-073L-500E and HCPL-070L-500E achieve ROHS3 compliance, making them suitable for applications with RoHS regulatory requirements. FOD073L RoHS status is not specified in available documentation.

Q: How do the current transfer ratios compare across these parts?

A: HCPL-073L#500, HCPL-073L-500E, and HCPL-070L-500E share identical current transfer ratio specifications (300% to 2600% at 1.6mA input). FOD073L operates at different input current (500µA) with higher transfer ratios (400% to 7000%), requiring input circuit adjustment if substituted.

Q: Are there inventory considerations for these substitutes?

A: HCPL-073L-500E has 2200 pcs available, HCPL-070L-500E has 2334 pcs, and FOD073L has 4870 pcs in stock. All three alternatives offer substantially higher availability than the discontinued HCPL-073L#500.