HCPL-4701#060 Equivalent & Substitute Parts

Part Overview

The HCPL-4701#060 is a single-channel optoisolator with Darlington output manufactured by Broadcom Limited, rated for 3750Vrms isolation voltage. This component is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute parts for ongoing design requirements and production needs. The part operates in the 0°C to 70°C temperature range with 8-DIP through-hole packaging and delivers up to 60mA output current per channel.

Key Parameters

Parameter	Value
Manufacturer	Broadcom Limited
Part Number	HCPL-4701#060
Category	Optoisolators
Number of Channels	1
Voltage - Isolation	3750Vrms
Output Type	Darlington with Base
Current Transfer Ratio (Min)	600% @ 500µA
Current Transfer Ratio (Max)	8000% @ 500µA
Turn On / Turn Off Time (Typ)	3µs, 34µs
Voltage - Output (Max)	18V
Current - Output / Channel	60mA
Operating Temperature	0°C ~ 70°C
Package / Case	8-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
RoHS Status	RoHS non-compliant
Product Status	Discontinued at DiGi Electronics

Substitute Part Grouping Explanation

Substitution of the HCPL-4701#060 is determined by the following critical parameters:

Isolation Voltage: Minimum 3750Vrms required
Output Type: Darlington with Base configuration
Number of Channels: Single channel
Package / Case: 8-DIP form factor (through-hole mounting)
Current - Output / Channel: Minimum 60mA capability
Voltage - Output (Max): Minimum 18V rating
Input Type: DC input
Operating Temperature Range: Must support 0°C ~ 70°C minimum

Parts are grouped into three categories: direct manufacturer equivalents (identical part number variants), parametric equivalents (same base specifications from same manufacturer), and manufacturer-recommended alternatives (functionally similar parts from other manufacturers with acceptable parameter variations).

Parameter Comparison

Parameter	HCPL-4701#060	HCPL-4701-060E	HCPL-4701	HCPL-4701-000E	6N138	6N138-V	6N138G	6N138M
Manufacturer	Broadcom	Broadcom	Broadcom	Broadcom	Fairchild	Everlight	Isocom	Fairchild
Voltage - Isolation	3750Vrms	3750Vrms	3750Vrms	3750Vrms	5000Vrms	5000Vrms	5000Vrms	5000Vrms
Current Transfer Ratio (Min)	600% @ 500µA	600% @ 500µA	600% @ 500µA	600% @ 500µA	300% @ 1.6mA	300% @ 1.6mA	300% @ 1.6mA	300% @ 1.6mA
Turn On / Turn Off Time (Typ)	3µs, 34µs	3µs, 34µs	3µs, 34µs	3µs, 34µs	1.35µs, 7.6µs	1.4µs, 8µs	—	1.4µs, 8µs
Voltage - Output (Max)	18V	18V	18V	18V	7V	7V	7V	7V
Current - Output / Channel	60mA	60mA	60mA	60mA	60mA	60mA	—	60mA
Voltage - Forward (Vf) (Typ)	1.25V	1.25V	1.25V	1.25V	1.4V	1.3V	1.3V	1.3V
Current - DC Forward (If) (Max)	10mA	10mA	10mA	10mA	25mA	20mA	20mA	20mA
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	-55°C ~ 100°C	-40°C ~ 85°C	-55°C ~ 85°C	-40°C ~ 85°C
Package / Case	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.400", 10.16mm)	8-DIP (0.400", 10.16mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Product Status	Discontinued	Active	Active	Active	Obsolete	Active	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	Non-compliant	ROHS3 Compliant	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	Not specified

Engineering Selection Recommendations

Direct Equivalents (Broadcom HCPL-4701 Series)

HCPL-4701-060E and HCPL-4701-000E are direct functional equivalents with identical electrical specifications to the HCPL-4701#060. Both are active products with ROHS3 compliance, addressing the RoHS non-compliance status of the discontinued part. HCPL-4701-060E is packaged in Tube format with 733 units in stock, while HCPL-4701-000E is available in Tube format with 5700 units in stock. The base part number HCPL-4701 (1900 units) is also available as an active product with non-compliant RoHS status.

Parametric Equivalents (Broadcom HCPL-4701 Base Series)

The HCPL-4701 and HCPL-4701-000E maintain identical electrical parameters to the original part, including 3750Vrms isolation, 600-8000% current transfer ratio, and 18V maximum output voltage. These parts are suitable for direct substitution in applications requiring the specified isolation voltage and output characteristics.

Manufacturer-Recommended Alternatives (6N138 Series)

The 6N138 series from multiple manufacturers (Fairchild, Everlight, Isocom) provides higher isolation voltage (5000Vrms) with reduced maximum output voltage (7V) and lower current transfer ratio minimum (300% @ 1.6mA). These parts are functionally compatible for applications where the higher isolation voltage is beneficial and the 7V output maximum is acceptable. The 6N138-V (Everlight, 1101 units) and 6N138M (Fairchild, 15479 units) are active products with extended temperature ranges (-40°C to 85°C). The 6N138G (Isocom, 1205 units) operates from -55°C to 85°C. The original 6N138 (Fairchild, 12100 units) is marked obsolete.

Compliance Considerations

For applications requiring RoHS3 compliance, HCPL-4701-060E and HCPL-4701-000E are the preferred direct replacements. The 6N138 series alternatives from Everlight (6N138-V) and Isocom (6N138G) are ROHS3 compliant. The Fairchild 6N138M does not specify RoHS status.

Frequently Asked Questions (FAQ)

Q: Can HCPL-4701-060E directly replace HCPL-4701#060 without circuit modification?

A: Yes. HCPL-4701-060E is electrically and mechanically identical to HCPL-4701#060, with the same isolation voltage (3750Vrms), current transfer ratio range (600-8000% @ 500µA), output voltage maximum (18V), and 8-DIP through-hole package. The primary difference is active product status and ROHS3 compliance.

Q: What are the key differences between HCPL-4701 series and 6N138 series substitutes?

A: The HCPL-4701 series provides 3750Vrms isolation with 18V maximum output voltage and 600-8000% current transfer ratio. The 6N138 series provides higher 5000Vrms isolation but with 7V maximum output voltage and lower 300% minimum current transfer ratio. Selection depends on whether the application requires the higher isolation voltage or the higher output voltage capability of the HCPL-4701.

Q: Are there package compatibility issues between HCPL-4701#060 and 6N138 alternatives?

A: Most 6N138 variants use 8-DIP packaging compatible with the original part. However, 6N138G and 6N138M use 8-DIP (0.400", 10.16mm) spacing versus the standard 8-DIP (0.300", 7.62mm) of the HCPL-4701#060. Verify PCB footprint compatibility before substitution. The 6N138(TP1,F) from Toshiba uses 8-SMD surface-mount packaging and is not compatible with through-hole applications.

Q: Which substitute part offers the best inventory availability?

A: Fairchild 6N138M has the highest inventory at 15479 units. For direct HCPL-4701 equivalents, HCPL-4701-000E offers 5700 units in stock.

Q: Do all substitute parts support the 0°C to 70°C operating temperature range?

A: Yes. All listed substitute parts support or exceed the 0°C to 70°C operating range. The 6N138 series alternatives provide extended temperature ranges from -40°C to -55°C minimum and 85°C to 100°C maximum, offering additional thermal margin.

Q: What is the impact of lower current transfer ratio in 6N138 alternatives?

A: The 6N138 series specifies 300% minimum current transfer ratio at 1.6mA input current, compared to 600% minimum at 500µA for HCPL-4701. This requires higher input current to achieve equivalent output performance. Circuit design must account for increased input current requirements when substituting with 6N138 series parts.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message