HCPL-4701#360 Equivalent & Substitute Parts

Part Overview

The HCPL-4701#360 is a 3750Vrms optoisolator with Darlington output and base connection, configured as a single-channel 8-DIP Gull Wing surface mount device. This component is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute parts for ongoing design support and procurement. The part operates across 0°C to 70°C with a current transfer ratio of 600% to 8000% at 500µA input, delivering up to 60mA output current at maximum 18V.

Key Parameters

Parameter	Value
Voltage - Isolation	3750Vrms
Number of Channels	1
Current Transfer Ratio (Min)	600% @ 500µA
Current Transfer Ratio (Max)	8000% @ 500µA
Output Type	Darlington with Base
Voltage - Output (Max)	18V
Current - Output / Channel	60mA
Turn On / Turn Off Time (Typ)	3µs, 34µs
Voltage - Forward (Vf) (Typ)	1.25V
Current - DC Forward (If) (Max)	10mA
Operating Temperature	0°C ~ 70°C
Package / Case	8-SMD, Gull Wing
Mounting Type	Surface Mount
Input Type	DC

Substitute Part Grouping Explanation

Substitution of the HCPL-4701#360 is determined by the following critical parameters:

Isolation Voltage: Minimum 3750Vrms required; higher isolation ratings are acceptable
Output Configuration: Darlington with Base output type mandatory
Single Channel: 1-channel configuration required
Output Current Capacity: Minimum 60mA per channel
Maximum Output Voltage: Minimum 18V capability
Package Type: 8-SMD Gull Wing surface mount form factor
Input Type: DC input required
Operating Temperature Range: Must support 0°C to 70°C minimum

Substitute parts are grouped into three categories:

Direct Broadcom Equivalents (HCPL-4701-360E, HCPL-4701#300, HCPL-4701-300E): Identical electrical specifications and package configuration, differing only in packaging format (Tube) and RoHS compliance status.

Manufacturer-Recommended Alternatives from Everlight Electronics (6N138S1 series): Meet or exceed isolation voltage (5000Vrms), maintain Darlington with Base output, support 60mA output current, and operate within extended temperature ranges. Turn-on/turn-off times are faster (1.4µs, 8µs).

Manufacturer-Recommended Alternatives from Vishay and Isocom (6N139-X009, 6N139-X009T, 6N138SMT/R): Exceed isolation voltage specifications (5000Vrms to 5300Vrms), maintain required output configuration and current capacity, and provide superior temperature operating ranges and faster switching characteristics.

Parameter Comparison

Part Number	Manufacturer	Isolation Voltage	CTR Min @ 500µA	Output Type	Max Output Voltage	Output Current	Turn On/Off Time	Operating Temp	RoHS Status	Product Status
HCPL-4701#360	Broadcom Limited	3750Vrms	600%	Darlington w/ Base	18V	60mA	3µs, 34µs	0°C ~ 70°C	Non-compliant	Discontinued
HCPL-4701-360E	Broadcom Limited	3750Vrms	600%	Darlington w/ Base	18V	60mA	3µs, 34µs	0°C ~ 70°C	ROHS3 Compliant	Active
HCPL-4701#300	Broadcom Limited	3750Vrms	600%	Darlington w/ Base	18V	60mA	3µs, 34µs	0°C ~ 70°C	Non-compliant	Active
HCPL-4701-300E	Broadcom Limited	3750Vrms	600%	Darlington w/ Base	18V	60mA	3µs, 34µs	0°C ~ 70°C	ROHS3 Compliant	Active
6N138S1(TA)	Everlight Electronics	5000Vrms	300% @ 1.6mA	Darlington w/ Base	7V	60mA	1.4µs, 8µs	-40°C ~ 85°C	ROHS3 Compliant	Active
6N138S1(TA)-V	Everlight Electronics	5000Vrms	300% @ 1.6mA	Darlington w/ Base	7V	60mA	1.4µs, 8µs	-40°C ~ 85°C	ROHS3 Compliant	Active
6N138S1(TB)	Everlight Electronics	5000Vrms	300% @ 1.6mA	Darlington w/ Base	7V	60mA	1.4µs, 8µs	-40°C ~ 85°C	ROHS3 Compliant	Active
6N138S1(TB)-V	Everlight Electronics	5000Vrms	300% @ 1.6mA	Darlington w/ Base	7V	60mA	1.4µs, 8µs	-40°C ~ 85°C	ROHS3 Compliant	Active
6N138SMT/R	Isocom Components 2004 LTD	5000Vrms	300% @ 1.6mA	Darlington w/ Base	7V	60mA	10µs, 35µs (Max)	0°C ~ 70°C	ROHS3 Compliant	Active
6N139-X009	Vishay Semiconductor Opto	5300Vrms	500% @ 1.6mA	Darlington w/ Base	18V	60mA	600ns, 1.5µs	-55°C ~ 100°C	ROHS3 Compliant	Active
6N139-X009T	Vishay Semiconductor Opto	5300Vrms	500% @ 1.6mA	Darlington w/ Base	18V	60mA	600ns, 1.5µs	-55°C ~ 100°C	ROHS3 Compliant	Active

Engineering Selection Recommendations

For Direct Replacement with Identical Specifications:

HCPL-4701-360E is the primary direct substitute. It maintains all electrical parameters of the original HCPL-4701#360 while offering ROHS3 compliance and active product status. This part is recommended when design specifications require exact parameter matching and the 0°C to 70°C operating range is sufficient.

HCPL-4701#300 and HCPL-4701-300E provide identical electrical performance and are suitable alternatives when packaging format flexibility exists. HCPL-4701-300E is preferred due to ROHS3 compliance.

For Applications Requiring Enhanced Specifications:

6N139-X009 and 6N139-X009T (Vishay) are recommended when designs can accommodate higher isolation voltage (5300Vrms), extended operating temperature range (-55°C to 100°C), and faster switching times (600ns turn-on, 1.5µs turn-off). These parts maintain the 18V maximum output voltage of the original and deliver superior performance characteristics. Both are ROHS3 compliant and active products.

For Cost-Optimized Procurement:

6N138SMT/R (Isocom) offers 5000Vrms isolation with ROHS3 compliance and active status. This part is suitable when the 0°C to 70°C operating range matches application requirements and the 7V maximum output voltage is acceptable for the circuit design.

Compliance Considerations:

All recommended substitutes are ROHS3 compliant and REACH unaffected, addressing regulatory requirements that the original discontinued part does not meet. Selection should prioritize active product status to ensure long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can HCPL-4701-360E be used as a direct drop-in replacement for HCPL-4701#360?

A: Yes. HCPL-4701-360E maintains identical electrical specifications including 3750Vrms isolation, 600% to 8000% current transfer ratio, 18V maximum output voltage, and 60mA output current. The primary difference is ROHS3 compliance and active product status. Packaging format is Tube rather than the original format.

Q: What are the key differences between Broadcom HCPL-4701 variants and Vishay 6N139-X009?

A: The 6N139-X009 provides higher isolation voltage (5300Vrms vs. 3750Vrms), faster switching times (600ns/1.5µs vs. 3µs/34µs), extended operating temperature range (-55°C to 100°C vs. 0°C to 70°C), and maintains the 18V maximum output voltage. Current transfer ratio is specified at different input levels (500% @ 1.6mA vs. 600% @ 500µA). Both maintain Darlington with Base output configuration and 60mA output current capacity.

Q: Are the Everlight 6N138S1 variants suitable replacements?

A: The 6N138S1 series meets isolation voltage requirements (5000Vrms), maintains Darlington with Base output, and delivers 60mA output current. However, maximum output voltage is limited to 7V compared to the original 18V specification. These parts are suitable only when circuit designs operate within 7V output voltage constraints. Operating temperature range extends to -40°C to 85°C, providing broader environmental coverage.

Q: What is the significance of packaging format differences (Tube vs. Tape & Reel)?

A: Packaging format affects procurement and assembly processes. Tube packaging is suitable for lower-volume applications and manual assembly. Tape & Reel (TR) format is optimized for automated pick-and-place assembly in high-volume production. Electrical performance is identical; selection depends on manufacturing process requirements.

Q: Can I use 6N139-X009T instead of 6N139-X009?

A: Yes. Both parts are electrically identical. The difference is packaging format: 6N139-X009 is supplied in Tube, while 6N139-X009T is supplied in Tape & Reel (TR). Selection depends on assembly process requirements.

Q: What should I consider when selecting between multiple substitute options?

A: Prioritize based on: (1) Operating temperature range requirements; (2) Maximum output voltage constraints in your circuit; (3) Switching speed requirements; (4) Isolation voltage margin needed; (5) Packaging format compatibility with assembly equipment; (6) Long-term supply chain availability (active product status). The Vishay 6N139-X009 series offers the broadest performance envelope and is recommended for new designs when output voltage requirements permit.

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