6N135M Optoisolator Equivalent & Substitute Parts

Part Overview

The 6N135M is an optoisolator transistor with base output manufactured by Lite-On Inc., designed for high-voltage isolation applications requiring 5000Vrms isolation rating. This component features a single channel configuration in an 8-DIP package and is currently in active product status with 3684 units in stock. Alternative equivalent parts are necessary when addressing supply constraints, extended temperature range requirements, or specific manufacturer preferences while maintaining functional compatibility within the same isolation voltage class and package footprint.

Substiute Parts

6N135M

Lite-On Inc.In Stock: 36966N135M Datasheet

Current PartRFQ

6N135G

Isocom Components 2004 LTDIn Stock: 9006N135G Datasheet

UpgradeRFQ

6N136G

Isocom Components 2004 LTDIn Stock: 10706N136G Datasheet

MFR RecommendedRFQ

HCNW136-000E

Broadcom LimitedIn Stock: 17934HCNW136-000E Datasheet

MFR RecommendedRFQ

HCNW4562-000E

Broadcom LimitedIn Stock: 5927HCNW4562-000E Datasheet

MFR RecommendedRFQ

HCPL-4562-000E

Broadcom LimitedIn Stock: 1751HCPL-4562-000E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 6N135M is determined by the following critical parameters:

• Isolation Voltage: All substitutes must maintain 5000Vrms isolation rating (exception: HCPL-4562-000E at 3750Vrms is a downgrade substitute only)
• Package / Case: All substitutes must use 8-DIP through-hole configuration
• Output Type: All substitutes must provide transistor with base output
• Number of Channels: All substitutes must be single-channel devices
• Output Voltage (Max): All substitutes must support 20V maximum output
• Output Current / Channel: All substitutes must support 8mA output current
• DC Forward Current (Max): All substitutes must support 25mA input current (exception: HCPL-4562-000E at 12mA is a downgrade substitute only)
• RoHS Compliance: All substitutes must maintain ROHS3 compliance

The substitute parts are grouped into two categories: direct equivalents (6N135G, 6N136G, HCNW136-000E, HCNW4562-000E) maintaining full 5000Vrms isolation, and a downgrade substitute (HCPL-4562-000E) with reduced isolation voltage and input current specifications.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Full Compatibility)

6N135G and 6N136G from Isocom Components 2004 LTD maintain identical isolation voltage, package dimensions, and electrical specifications within the specified parameter ranges. Both are ROHS3 compliant and support extended operating temperature ranges (-55°C to 100°C), providing enhanced thermal performance over the main part. 6N136G offers higher minimum current transfer ratio (19% vs 7%), which may improve circuit margin in applications sensitive to CTR variation.

HCNW136-000E from Broadcom Limited maintains 5000Vrms isolation and full electrical compatibility. This part offers the highest inventory availability (17855 units) and REACH compliance documentation. Operating temperature range is -55°C to 85°C.

HCNW4562-000E from Broadcom Limited maintains 5000Vrms isolation and identical electrical specifications. This part includes Vce saturation specification (1.25V) and supports the full operating temperature range of -40°C to 85°C.

Downgrade Substitute (Conditional Use Only)

HCPL-4562-000E from Broadcom Limited operates at reduced isolation voltage (3750Vrms) and reduced maximum DC forward current (12mA vs 25mA). This part features a different package dimension (0.300" vs 0.400" DIP spacing) and is suitable only for applications where 3750Vrms isolation is acceptable and input current does not exceed 12mA. All parts maintain ROHS3 compliance and active product status.

Frequently Asked Questions (FAQ)

Q: Can 6N135G directly replace 6N135M without circuit modification?

A: Yes. 6N135G maintains identical isolation voltage (5000Vrms), package configuration (8-DIP 0.400"), output type (transistor with base), and all critical electrical parameters. The extended temperature range (-55°C to 100°C) provides additional operational margin.

Q: What is the difference between 6N135G and 6N136G?

A: Both parts are functionally equivalent with identical isolation voltage and package. The primary difference is current transfer ratio minimum specification: 6N135G specifies 7% minimum while 6N136G specifies 19% minimum at 16mA input current. 6N136G provides tighter CTR tolerance and may be preferred in applications requiring consistent gain characteristics.

Q: Is HCPL-4562-000E compatible with 6N135M applications?

A: HCPL-4562-000E is a downgrade substitute suitable only if your application can tolerate 3750Vrms isolation (instead of 5000Vrms) and input current limited to 12mA maximum (instead of 25mA). Additionally, the package dimension differs (0.300" DIP spacing vs 0.400"), requiring PCB layout verification before substitution.

Q: Why does HCNW136-000E have higher forward voltage (1.68V) than the main part (1.4V)?

A: Forward voltage variation within the specified range reflects manufacturing tolerance and material differences between manufacturers. Circuit design should accommodate the specified maximum forward voltage range for all potential substitutes.

Q: Can I use HCNW4562-000E in place of 6N135M?

A: Yes. HCNW4562-000E maintains 5000Vrms isolation, 8-DIP package, and all critical electrical parameters. This part includes Vce saturation specification (1.25V) and operates within the same temperature range as the main part (-40°C to 85°C).

Q: Which substitute offers the best supply availability?

A: HCNW136-000E from Broadcom Limited currently has the highest inventory (17855 units) among all listed substitutes, making it the preferred choice for applications requiring immediate availability.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the environmental compliance status of the main part 6N135M.