HCPL-M701 Equivalent & Substitute Parts

Part Overview

The HCPL-M701 is an optoisolator with Darlington output manufactured by Broadcom Limited. This component provides galvanic isolation up to 3750Vrms with a single channel configuration, designed for applications requiring high-voltage isolation and DC input switching. The part is currently in active production status with 1900 units available in inventory. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter ranges for this optoisolator category.

Key Parameters

Parameter	Value
Manufacturer Part Number	HCPL-M701
Manufacturer	Broadcom Limited
Category	Optoisolators
Number of Channels	1
Voltage - Isolation	3750Vrms
Current Transfer Ratio (Min)	500% @ 1.6mA
Output Type	Darlington
Voltage - Output (Max)	18V
Current - Output / Channel	60mA
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Package / Case	6-SOIC (0.173", 4.40mm Width)
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the HCPL-M701 are qualified based on the following electrical and mechanical criteria:

Isolation Voltage: Substitute must meet or exceed 3750Vrms isolation specification
Number of Channels: Single channel configuration required
Current Transfer Ratio: Minimum 500% @ 1.6mA to ensure switching performance
Output Voltage Rating: Maximum output voltage of 18V or higher
Output Current Capacity: Minimum 60mA per channel
Input Type: DC input compatibility
Mounting Type: Surface mount configuration
Product Status: Active production status

The SFH6319T qualifies as a substitute based on meeting or exceeding all critical electrical parameters while maintaining surface mount compatibility.

Parameter Comparison

Parameter	HCPL-M701	SFH6319T	Compatibility
Manufacturer	Broadcom Limited	Vishay Semiconductor Opto Division	Different manufacturer
Number of Channels	1	1	Match
Voltage - Isolation	3750Vrms	4000Vrms	Substitute exceeds requirement
Current Transfer Ratio (Min)	500% @ 1.6mA	500% @ 1.6mA	Match
Turn On / Turn Off Time (Typ)	500ns, 1µs	600ns, 1.5µs	Substitute slightly slower
Input Type	DC	DC	Match
Output Type	Darlington	Transistor with Base	Different output configuration
Voltage - Output (Max)	18V	18V	Match
Current - Output / Channel	60mA	60mA	Match
Voltage - Forward (Vf) (Typ)	1.4V	1.4V	Match
Current - DC Forward (If) (Max)	20 mA	20 mA	Match
Operating Temperature	0°C ~ 70°C	-55°C ~ 100°C	Substitute has wider range
Mounting Type	Surface Mount	Surface Mount	Match
Package / Case	6-SOIC (0.173", 4.40mm Width)	8-SOIC (0.154", 3.90mm Width)	Different package size
RoHS Status	RoHS non-compliant	ROHS3 Compliant	Substitute is compliant
Product Status	Active	Active	Match

Engineering Selection Recommendations

HCPL-M701 (Primary Part)

Use the HCPL-M701 when the application requires a Darlington output configuration with the specified 6-SOIC package footprint. This part is active in production and suitable for designs already committed to this package geometry.

SFH6319T (Substitute Part)

The SFH6319T qualifies as an electrical substitute based on meeting or exceeding isolation voltage, current transfer ratio, output voltage, and output current specifications. The substitute provides the following advantages:

Higher isolation voltage rating (4000Vrms vs. 3750Vrms)
Wider operating temperature range (-55°C to 100°C vs. 0°C to 70°C)
RoHS3 compliance status

The SFH6319T differs in the following aspects:

Output configuration is Transistor with Base rather than Darlington
Package is 8-SOIC (0.154", 3.90mm Width) rather than 6-SOIC (0.173", 4.40mm Width)
Turn-on and turn-off times are slightly longer (600ns, 1.5µs vs. 500ns, 1µs)

Substitution requires circuit board layout modification to accommodate the different package footprint and pin configuration. The Transistor with Base output may require circuit design adjustments compared to the Darlington output topology.

Frequently Asked Questions (FAQ)

Q: Can SFH6319T be used as a direct pin-for-pin replacement for HCPL-M701?

A: No. The SFH6319T uses an 8-SOIC package while the HCPL-M701 uses a 6-SOIC package. The pin counts and footprints are different, requiring circuit board layout modifications. Additionally, the output configurations differ (Transistor with Base vs. Darlington), which may require circuit design changes.

Q: What are the key electrical differences between these parts?

A: Both parts meet the 500% minimum current transfer ratio at 1.6mA and support 60mA output current. The SFH6319T provides higher isolation voltage (4000Vrms vs. 3750Vrms) and a wider operating temperature range. The SFH6319T has slightly longer switching times (600ns/1.5µs vs. 500ns/1µs).

Q: Is the SFH6319T suitable for applications requiring Darlington output characteristics?

A: The SFH6319T provides Transistor with Base output, not Darlington output. Applications specifically designed for Darlington characteristics may require circuit modifications to function with the Transistor with Base configuration.

Q: What compliance advantages does SFH6319T offer?

A: The SFH6319T is RoHS3 compliant, while the HCPL-M701 is RoHS non-compliant. Both parts are REACH Unaffected and carry EAR99 ECCN classification.

Q: Are both parts available in production?

A: Yes. Both HCPL-M701 and SFH6319T are active production parts with current inventory availability (1900 units and 1864 units respectively).

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