HCPL-073L-060 Equivalent & Substitute Parts

Part Overview

The HCPL-073L-060 is a 2-channel optoisolator with Darlington output manufactured by Broadcom Limited. It provides 3750Vrms isolation voltage and is designed for DC input applications requiring galvanic isolation. The part is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing design requirements and production needs.

Key Parameters

Parameter	Value
Manufacturer Part Number	HCPL-073L-060
Manufacturer	Broadcom Limited
Category	Optoisolators
Number of Channels	2
Voltage - Isolation	3750Vrms
Current Transfer Ratio (Min)	300% @ 1.6mA
Current Transfer Ratio (Max)	2600% @ 1.6mA
Turn On / Turn Off Time (Typ)	25µs, 50µs
Output Type	Darlington
Voltage - Output (Max)	7V
Current - Output / Channel	60mA
Voltage - Forward (Vf) (Typ)	1.5V
Current - DC Forward (If) (Max)	20mA
Operating Temperature	0°C ~ 70°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	RoHS non-compliant
Product Status	Discontinued at DiGi Electronics

Substitute Part Grouping Explanation

Substitution for the HCPL-073L-060 is determined by the following critical parameters:

Primary Substitution Criteria:

Number of Channels: 2 (required for direct functional replacement)
Voltage - Isolation: 3750Vrms (minimum isolation requirement)
Output Type: Darlington (output configuration)
Package / Case: 8-SOIC (0.154", 3.90mm Width) (physical compatibility)
Current - Output / Channel: 60mA (load capability)

Substitute Categories:

Category 1: Direct Functional Equivalents (2-Channel, 3750Vrms) Parts meeting all primary criteria with identical channel count and isolation voltage:

HCPL-0730-500E (MFR Recommended)
HCPL-073L
HCPL-073L-000E
HCPL-073L-060E

Category 2: Parametric Equivalents (1-Channel, 3750Vrms) Parts with reduced channel count but identical isolation voltage and output specifications:

HCPL-070L
HCPL-070L-000E

Category 3: Cross-Manufacturer Substitute (2-Channel, Reduced Isolation) Alternative manufacturer with different isolation voltage specification:

FOD073L (Fairchild Semiconductor, 2500Vrms isolation)

Parameter Comparison

Parameter	HCPL-073L-060	HCPL-0730-500E	HCPL-073L	HCPL-073L-000E	HCPL-073L-060E	HCPL-070L	HCPL-070L-000E	FOD073L
Manufacturer	Broadcom	Broadcom	Broadcom	Broadcom	Broadcom	Broadcom	Broadcom	Fairchild
Number of Channels	2	2	2	2	2	1	1	2
Voltage - Isolation	3750Vrms	3750Vrms	3750Vrms	3750Vrms	3750Vrms	3750Vrms	3750Vrms	2500Vrms
Current Transfer Ratio (Min)	300% @ 1.6mA	300% @ 1.6mA	300% @ 1.6mA	300% @ 1.6mA	300% @ 1.6mA	300% @ 1.6mA	300% @ 1.6mA	400% @ 500µA
Current Transfer Ratio (Max)	2600% @ 1.6mA	2600% @ 1.6mA	2600% @ 1.6mA	2600% @ 1.6mA	2600% @ 1.6mA	2600% @ 1.6mA	2600% @ 1.6mA	7000% @ 500µA
Turn On / Turn Off Time (Typ)	25µs, 50µs	5µs, 10µs	25µs, 50µs	25µs, 50µs	25µs, 50µs	25µs, 50µs	25µs, 50µs	5µs, 25µs
Output Type	Darlington	Darlington	Darlington	Darlington	Darlington	Darlington	Darlington	Darlington
Voltage - Output (Max)	7V	7V	7V	7V	7V	7V	7V	7V
Current - Output / Channel	60mA	60mA	60mA	60mA	60mA	60mA	60mA	60mA
Voltage - Forward (Vf) (Typ)	1.5V	1.4V	1.5V	1.5V	1.5V	1.5V	1.5V	1.35V
Current - DC Forward (If) (Max)	20mA	12mA	20mA	20mA	20mA	20mA	20mA	20mA
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	RoHS non-compliant	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant	Not specified
Product Status	Discontinued	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Primary Recommendation: HCPL-0730-500E

The HCPL-0730-500E is the manufacturer-recommended substitute. It provides identical electrical specifications to the HCPL-073L-060 with 2-channel configuration, 3750Vrms isolation, and 60mA output current per channel. The part is ROHS3 compliant and currently active in production. The primary difference is improved switching speed (5µs/10µs versus 25µs/50µs) and reduced forward current (12mA maximum versus 20mA), both favorable characteristics. Packaging is Tape & Reel format.

Secondary Recommendation: HCPL-073L-060E

The HCPL-073L-060E maintains identical electrical and timing specifications to the original part while offering ROHS3 compliance and active product status. This part provides the closest functional match with improved environmental compliance. Packaging is Tube format.

Alternative Recommendation: HCPL-073L-000E

The HCPL-073L-000E is functionally equivalent with identical specifications and ROHS3 compliance. It offers the highest inventory availability (6000 pcs) among 2-channel alternatives. Packaging is Tube format.

Single-Channel Alternative: HCPL-070L-000E

For applications requiring only single-channel isolation, the HCPL-070L-000E provides identical electrical performance with ROHS3 compliance and active status. This option is suitable only if circuit design permits reduction from 2 channels to 1 channel.

Cross-Manufacturer Option: FOD073L

The FOD073L from Fairchild Semiconductor provides 2-channel Darlington output in identical 8-SOIC package. The isolation voltage is reduced to 2500Vrms, which is acceptable only for applications with lower isolation requirements. The part offers improved switching speed (5µs/25µs) and extended operating temperature range (-40°C to 85°C). This option is suitable only when isolation voltage reduction is acceptable.

Frequently Asked Questions (FAQ)

Q: Can HCPL-0730-500E directly replace HCPL-073L-060 in existing designs?

A: Yes. The HCPL-0730-500E provides identical channel count (2), isolation voltage (3750Vrms), output current (60mA per channel), and package format (8-SOIC). The improved switching speed and reduced forward current are compatible with existing circuit designs. No PCB modifications are required.

Q: What is the difference between HCPL-073L-060E and HCPL-0730-500E?

A: Both parts are functionally equivalent with identical electrical specifications. The primary difference is packaging format: HCPL-073L-060E is supplied in Tube format, while HCPL-0730-500E is supplied in Tape & Reel format. Selection depends on assembly process requirements.

Q: Can single-channel parts (HCPL-070L series) replace the 2-channel HCPL-073L-060?

A: Single-channel parts can replace the HCPL-073L-060 only if the circuit design uses only one isolation channel. If both channels are required, single-channel parts are not suitable. The HCPL-070L series maintains identical electrical specifications for the available channel.

Q: Is FOD073L suitable as a substitute?

A: FOD073L is suitable only if the application isolation voltage requirement is 2500Vrms or lower. The reduced isolation voltage makes this part unsuitable for designs requiring 3750Vrms isolation. All other electrical parameters are compatible.

Q: What is the impact of RoHS compliance differences?

A: ROHS3-compliant parts (HCPL-0730-500E, HCPL-073L-000E, HCPL-073L-060E, HCPL-070L-000E) meet current environmental regulations for new designs and manufacturing. The original HCPL-073L-060 is RoHS non-compliant. Selection of compliant alternatives is recommended for new production.

Q: Are there inventory considerations for part selection?

A: Yes. HCPL-073L-000E offers the highest inventory (6000 pcs), followed by HCPL-073L (3355 pcs) and HCPL-0730-500E (2200 pcs). Inventory levels should be considered for production volume and lead time requirements.

Q: What are the switching speed implications of HCPL-0730-500E?

A: The HCPL-0730-500E has faster switching times (5µs on, 10µs off) compared to the original part (25µs on, 50µs off). This improvement allows operation at higher switching frequencies and reduces propagation delay. Existing designs will operate correctly with the faster part.

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