HCPL0730R1 Equivalent & Substitute Parts

Part Overview

The HCPL0730R1 is a 2-channel Darlington output optoisolator manufactured by onsemi, rated for 2500Vrms isolation voltage. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The part operates with a current transfer ratio range of 300% to 5000% at 1.6mA input current and supports output currents up to 60mA per channel in an 8-SOIC surface mount package.

Key Parameters

Parameter	Value
Manufacturer Part Number	HCPL0730R1
Manufacturer	onsemi
Category	Optoisolators
Number of Channels	2
Voltage - Isolation	2500Vrms
Current Transfer Ratio (Min)	300% @ 1.6mA
Current Transfer Ratio (Max)	5000% @ 1.6mA
Output Type	Darlington
Voltage - Output (Max)	7V
Current - Output / Channel	60mA
Operating Temperature	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the HCPL0730R1 are qualified based on the following criteria:

Electrical Compatibility Parameters:

Number of channels: 2 (required match)
Output type: Darlington (required match)
Package type: 8-SOIC surface mount (required match)
Current output per channel: 60mA (required match)
Input type: DC (required match)

Allowable Parameter Variations:

Isolation voltage: Substitute parts may exceed the 2500Vrms specification
Current transfer ratio: Substitute parts may have different CTR specifications at different input currents
Maximum output voltage: Substitute parts may exceed 7V
Operating temperature range: Substitute parts may have narrower or different ranges
Forward voltage and forward current: Substitute parts may differ within component tolerances

The HCPL-073A series from Broadcom Limited meets all electrical and mechanical compatibility requirements while offering enhanced isolation voltage ratings and improved current transfer characteristics.

Parameter Comparison

Parameter	HCPL0730R1	HCPL-073A	HCPL-073A-000E	HCPL-073A-500E
Manufacturer	onsemi	Broadcom Limited	Broadcom Limited	Broadcom Limited
Number of Channels	2	2	2	2
Voltage - Isolation	2500Vrms	3750Vrms	3750Vrms	3750Vrms
Current Transfer Ratio (Min)	300% @ 1.6mA	600% @ 500µA	600% @ 500µA	600% @ 500µA
Current Transfer Ratio (Max)	5000% @ 1.6mA	8000% @ 500µA	8000% @ 500µA	8000% @ 500µA
Output Type	Darlington	Darlington	Darlington	Darlington
Voltage - Output (Max)	7V	18V	18V	18V
Current - Output / Channel	60mA	60mA	60mA	60mA
Voltage - Forward (Vf) (Typ)	1.35V	1.25V	1.25V	1.25V
Current - DC Forward (If) (Max)	20mA	5mA	5mA	5mA
Operating Temperature	-40°C ~ 85°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active
Packaging	-	-	Tube	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

HCPL-073A Series Selection Basis:

All three substitute parts (HCPL-073A, HCPL-073A-000E, HCPL-073A-500E) are active products from Broadcom Limited, providing long-term availability compared to the obsolete HCPL0730R1. The HCPL-073A series offers superior isolation voltage (3750Vrms versus 2500Vrms), enabling use in higher voltage isolation applications.

Compliance Considerations:

HCPL-073A-000E carries ROHS3 compliance certification, suitable for applications requiring RoHS compliance. HCPL-073A-500E also carries ROHS3 compliance. The base HCPL-073A part is listed as RoHS non-compliant. All parts maintain REACH Unaffected status and EAR99 export classification.

Packaging and Procurement:

HCPL-073A: Standard packaging (product status: Active)
HCPL-073A-000E: Tube packaging (1480 Pcs inventory)
HCPL-073A-500E: Cut Tape & Digi-Reel packaging (2800 Pcs inventory)

Selection between these variants depends on procurement requirements and packaging preferences rather than electrical performance differences.

Operating Temperature Consideration:

The HCPL-073A series operates within 0°C to 70°C, which is narrower than the HCPL0730R1 range of -40°C to 85°C. Applications requiring extended low-temperature operation below 0°C or high-temperature operation above 70°C must evaluate this parameter against system requirements.

Frequently Asked Questions (FAQ)

Q: Can HCPL-073A series parts directly replace HCPL0730R1 in existing designs?

A: Yes, from an electrical and mechanical standpoint. Both are 2-channel Darlington output optoisolators in 8-SOIC packages with 60mA output current per channel. Pin-to-pin compatibility exists. However, verify that the narrower operating temperature range (0°C to 70°C versus -40°C to 85°C) and higher maximum output voltage (18V versus 7V) are acceptable for your application.

Q: What is the difference between HCPL-073A, HCPL-073A-000E, and HCPL-073A-500E?

A: These parts are electrically identical. The differences are packaging format and RoHS compliance status. HCPL-073A-000E comes in Tube packaging with ROHS3 compliance. HCPL-073A-500E comes in Cut Tape & Digi-Reel packaging with ROHS3 compliance. The base HCPL-073A has no specified packaging format and is RoHS non-compliant. Select based on your procurement and compliance requirements.

Q: Why does the HCPL-073A have higher isolation voltage than HCPL0730R1?

A: The HCPL-073A is rated for 3750Vrms isolation versus 2500Vrms for HCPL0730R1. This is a design characteristic of the Broadcom part and represents an enhancement. Applications requiring only 2500Vrms isolation can safely use the higher-rated substitute.

Q: Are there any circuit design changes needed when substituting HCPL-073A for HCPL0730R1?

A: The higher maximum output voltage (18V versus 7V) and lower forward current requirement (5mA maximum versus 20mA maximum) may allow circuit optimization but do not require changes. Verify that input LED drive circuits can operate within the 5mA maximum forward current specification of the substitute part.

Q: What is the inventory status for these substitute parts?

A: HCPL-073A-000E has 1480 pieces in stock. HCPL-073A-500E has 2800 pieces in stock. Both are listed as active products with ongoing availability from Broadcom Limited.

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