6N137 Equivalent & Substitute Parts

Part Overview

The 6N137 is a logic output optoisolator manufactured by onsemi, featuring 2500Vrms isolation voltage, open collector output, and 10Mbps data rate in an 8-DIP package. The device is currently listed as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. Substitute parts must maintain compatibility across isolation voltage, output type, data rate, and package configuration while meeting modern compliance requirements.

Key Parameters

Parameter	Value
Isolation Voltage	2500Vrms
Number of Channels	1
Output Type	Open Collector
Data Rate	10Mbps
Current - Output / Channel	50 mA
Voltage - Supply	4.5V ~ 5.5V
Package / Case	8-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
Operating Temperature	-40°C ~ 85°C

Substitute Part Grouping Explanation

Substitution for the 6N137 is determined by the following critical parameters:

Isolation Voltage: Minimum 2500Vrms required; higher isolation ratings (5000Vrms) are acceptable as they provide enhanced safety margins
Output Configuration: Open collector output type is mandatory for functional compatibility
Data Rate: Minimum 10Mbps; higher data rates are acceptable
Package: 8-DIP (0.300", 7.62mm) through-hole mounting required for PCB compatibility
Supply Voltage: 4.5V ~ 5.5V compatibility required
Output Current: 50 mA per channel minimum

Substitute parts are grouped into two categories: direct substitutes (same isolation voltage or higher) and functional equivalents (different manufacturers with compatible electrical characteristics).

Parameter Comparison

Part Number	Manufacturer	Isolation Voltage	Output Type	Data Rate	Output Current	Supply Voltage	Package	Product Status
6N137	onsemi	2500Vrms	Open Collector	10Mbps	50 mA	4.5V ~ 5.5V	8-DIP	Obsolete
6N137M	onsemi	5000Vrms	Open Collector	10Mbps	50 mA	4.5V ~ 5.5V	8-DIP	Active
6N137F	Toshiba Semiconductor and Storage	2500Vrms	Open Collector	10MBd	50 mA	4.5V ~ 5.5V	8-DIP	Active
HCPL-260L	Broadcom Limited	3750Vrms	Open Collector, Schottky Clamped	15MBd	50 mA	2.7V ~ 3.6V, 4.5V ~ 5.5V	8-DIP	Active
HCPL-260L-000E	Broadcom Limited	3750Vrms	Open Collector, Schottky Clamped	15MBd	50 mA	2.7V ~ 3.6V, 4.5V ~ 5.5V	8-DIP	Active
HCPL-260L-020E	Broadcom Limited	5000Vrms	Open Collector, Schottky Clamped	15MBd	50 mA	2.7V ~ 3.6V, 4.5V ~ 5.5V	8-DIP	Active
HCPL-2602	Broadcom Limited	3750Vrms	Line Receiver	75ns, 75ns	50mA	4.5V ~ 5.5V	8-DIP	Active
HCPL-2602-000E	Broadcom Limited	3750Vrms	Line Receiver	75ns, 75ns	50mA	4.5V ~ 5.5V	8-DIP	Active

Engineering Selection Recommendations

Primary Substitute: 6N137M (onsemi)

The 6N137M is the direct successor to the 6N137, manufactured by the same supplier. It maintains identical electrical functionality while offering enhanced isolation voltage (5000Vrms vs. 2500Vrms) and active product status. RoHS3 compliance and improved operating temperature range (-40°C ~ 100°C) make this the preferred choice for new designs and production continuity.

Secondary Substitutes: HCPL-260L Series (Broadcom Limited)

The HCPL-260L, HCPL-260L-000E, and HCPL-260L-020E provide functional equivalence with higher data rates (15MBd vs. 10Mbps) and isolation voltages ranging from 3750Vrms to 5000Vrms. These devices feature Schottky clamped outputs and dual supply voltage compatibility (2.7V ~ 3.6V and 4.5V ~ 5.5V). RoHS3 compliance is available in the -000E and -020E variants.

Alternative: 6N137F (Toshiba Semiconductor and Storage)

The 6N137F maintains the original 2500Vrms isolation voltage and 10MBd data rate with active product status. RoHS compliance and availability make this suitable for applications requiring exact electrical parameter matching to the original 6N137.

Not Recommended: HCPL-2602 Series

The HCPL-2602 and HCPL-2602-000E are line receiver optoisolators with different input/output characteristics (AC/DC input, line receiver output) and do not provide functional equivalence to the 6N137 logic output configuration.

Frequently Asked Questions (FAQ)

Q: Can the 6N137M directly replace the 6N137 without circuit modifications?

A: Yes. The 6N137M maintains identical pinout, supply voltage range (4.5V ~ 5.5V), output current (50 mA), and package configuration (8-DIP). The higher isolation voltage (5000Vrms) provides enhanced safety margins without requiring design changes.

Q: What is the difference between HCPL-260L and HCPL-260L-000E?

A: Both devices are electrically identical with 3750Vrms isolation and 15MBd data rate. The primary difference is compliance status: HCPL-260L-000E is RoHS3 compliant, while HCPL-260L is RoHS non-compliant. For new designs, HCPL-260L-000E is recommended.

Q: Is HCPL-260L-020E suitable for applications requiring 5000Vrms isolation?

A: Yes. The HCPL-260L-020E provides 5000Vrms isolation voltage, matching the enhanced isolation of the 6N137M while offering higher data rate (15MBd) and Schottky clamped output configuration. It is RoHS3 compliant and supports dual supply voltage ranges.

Q: Can HCPL-2602 be used as a substitute for 6N137?

A: No. The HCPL-2602 is a line receiver optoisolator with AC/DC input capability, fundamentally different from the 6N137 logic output configuration. Functional and electrical incompatibility makes this unsuitable for direct substitution.

Q: What are the key compliance differences between substitute options?

A: The 6N137M and HCPL-260L-000E/020E variants are RoHS3 compliant with active product status, suitable for modern production environments. The original 6N137 and 6N137F are RoHS compliant but with different compliance frameworks. All listed parts are REACH unaffected and carry EAR99 ECCN classification.

Q: Does the 8-DIP package remain consistent across all substitutes?

A: Yes. All substitute parts listed maintain the 8-DIP (0.300", 7.62mm) through-hole package configuration, ensuring PCB layout compatibility without redesign.

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