HCPL-073A#500 Equivalent & Substitute Parts

Part Overview

The HCPL-073A#500 is a 2-channel optoisolator with Darlington output, rated for 3750Vrms isolation voltage. Manufactured by Broadcom Limited, this component is designed for applications requiring high-voltage isolation with DC input and Darlington output configuration in an 8-SOIC surface mount package.

The HCPL-073A#500 is discontinued at DiGi Electronics. Identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production and maintenance applications.

Substiute Parts

HCPL-073A#500

Broadcom LimitedIn Stock: 1156HCPL-073A#500 Datasheet

Current PartRFQ

HCPL-073A-500E

Broadcom LimitedIn Stock: 2831HCPL-073A-500E Datasheet

Parametric EquivalentRFQ

FOD073L

Fairchild SemiconductorIn Stock: 4960FOD073L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HCPL-073A#500 are identified based on the following critical parameters that define functional equivalence:

Primary Matching Criteria:

• Number of Channels: 2
• Input Type: DC
• Output Type: Darlington
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount

Secondary Compatibility Parameters:

• Voltage - Isolation: 3750Vrms (minimum acceptable)
• Current Transfer Ratio range: 600% minimum @ 500µA
• Current - Output / Channel: 60mA
• Voltage - Output (Max): 18V

Substitute parts must maintain compatibility across these parameters to ensure direct functional replacement in existing circuit designs.

Parameter Comparison

Engineering Selection Recommendations

HCPL-073A-500E (Broadcom Limited)

This part is a parametric equivalent to the HCPL-073A#500. It maintains identical electrical specifications across all critical parameters: 3750Vrms isolation voltage, 600-8000% current transfer ratio, 18V maximum output voltage, and 60mA output current per channel. The HCPL-073A-500E is currently in active production status with ROHS3 compliance, making it the primary replacement for discontinued HCPL-073A#500 units. Packaging is available in Cut Tape (CT) and Digi-Reel® formats.

FOD073L (Fairchild Semiconductor)

This part is a manufacturer-recommended alternative with functional compatibility in 2-channel Darlington optoisolator applications. The FOD073L operates at 2500Vrms isolation voltage, which is lower than the HCPL-073A#500 specification. Additional parameter differences include reduced maximum output voltage (7V vs. 18V), lower minimum current transfer ratio (400% vs. 600%), and higher maximum forward current (20mA vs. 5mA). The FOD073L is suitable for applications where the lower isolation voltage and output voltage specifications are acceptable. This part is in active production status and supports an extended operating temperature range of -40°C to 85°C.

Frequently Asked Questions (FAQ)

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

A: Yes. The HCPL-073A-500E is a parametric equivalent with identical electrical specifications. Both parts share the same isolation voltage (3750Vrms), current transfer ratio range (600-8000% @ 500µA), output voltage (18V max), and output current (60mA per channel). The primary difference is product status: HCPL-073A-500E is in active production while HCPL-073A#500 is discontinued.

Q: What are the key differences between HCPL-073A-500E and FOD073L?

A: The HCPL-073A-500E maintains the full 3750Vrms isolation specification and 18V maximum output voltage. The FOD073L operates at 2500Vrms isolation and 7V maximum output voltage. The FOD073L also has a lower minimum current transfer ratio (400% vs. 600%) and higher maximum forward current (20mA vs. 5mA). Selection depends on whether your application requires the higher isolation and output voltage specifications of the HCPL-073A-500E.

Q: Are all substitute parts available in the same package?

A: Yes. All three parts use the 8-SOIC (0.154", 3.90mm Width) surface mount package, ensuring mechanical compatibility in PCB layouts designed for the HCPL-073A#500.

Q: What is the compliance status of these parts?

A: The HCPL-073A#500 is RoHS non-compliant. The HCPL-073A-500E is ROHS3 compliant. The FOD073L compliance status is not specified in available documentation. For applications requiring RoHS compliance, the HCPL-073A-500E is the appropriate selection.

Q: Does operating temperature range affect part selection?

A: The HCPL-073A#500 and HCPL-073A-500E operate from 0°C to 70°C. The FOD073L operates from -40°C to 85°C. If your application requires operation below 0°C or above 70°C, the FOD073L extended temperature range may be beneficial, provided the lower isolation and output voltage specifications are acceptable.