6N135M Optoisolator Equivalent & Substitute Parts

Part Overview

The 6N135M is an optoisolator transistor with base output manufactured by Everlight Electronics Co Ltd. This component provides 5000Vrms isolation voltage in a single-channel configuration with transistor output and integrated base connection. The device is designed for DC input applications requiring galvanic isolation in 8-DIP through-hole packaging.

The 6N135M maintains active product status with 3684 units in current inventory. Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and application-specific requirements where isolation voltage, output current, or operating temperature ranges may differ from the primary specification.

Substiute Parts

6N135M

Everlight Electronics Co LtdIn Stock: 37566N135M Datasheet

Current PartRFQ

HCPL-4562-000E

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

SimilarRFQ

6N135G

Isocom Components 2004 LTDIn Stock: 9006N135G Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 6N135M are classified based on compatibility with the following critical parameters:

Parametric Equivalents maintain identical or equivalent electrical specifications:

• Isolation voltage: 5000Vrms
• Output type: Transistor with Base
• Current transfer ratio range: 7% to 50% @ 16mA
• Forward voltage: 1.45V (Typ)
• Maximum forward current: 25mA
• Package: 8-DIP through-hole
• Operating temperature: -55°C to 100°C

Functional Substitutes provide equivalent isolation and switching function with modified electrical parameters:

• Isolation voltage: 3750Vrms (reduced from 5000Vrms)
• Output type: Transistor with Base
• Package: 8-DIP through-hole
• Operating temperature: -40°C to 85°C (narrower range)

All substitute parts maintain single-channel configuration, DC input type, and through-hole mounting compatibility.

Parameter Comparison

Engineering Selection Recommendations

6N135G (Isocom Components 2004 LTD) is a parametric equivalent suitable for direct replacement in applications where the 6N135M is specified. This part maintains identical isolation voltage (5000Vrms), current transfer ratio range (7% to 50% @ 16mA), forward voltage (1.45V Typ), and operating temperature range (-55°C to 100°C). Package dimensions are identical (8-DIP 0.400", 10.16mm). Both parts are ROHS3 compliant with MSL 1 rating. Selection of 6N135G is appropriate when supply of the primary 6N135M is constrained.

HCPL-4562-000E (Broadcom Limited) functions as a substitute where reduced isolation voltage is acceptable. This part provides 3750Vrms isolation (25% reduction from 5000Vrms specification) and operates within a narrower temperature range (-40°C to 85°C). The HCPL-4562-000E features a smaller package footprint (8-DIP 0.300", 7.62mm) and reduced maximum forward current (12mA versus 25mA). This part is suitable for applications not requiring the full 5000Vrms isolation specification and operating within the -40°C to 85°C temperature window. ROHS3 compliance and MSL 1 rating are maintained.

All three parts are active products with current inventory availability and meet regulatory compliance requirements for industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can the 6N135G replace the 6N135M in all applications?

A: The 6N135G is a parametric equivalent with identical electrical specifications and package dimensions. Direct replacement is supported for applications requiring 5000Vrms isolation, 7% to 50% current transfer ratio, and -55°C to 100°C operating temperature. No circuit modifications are required.

Q: What are the limitations of using HCPL-4562-000E as a substitute?

A: The HCPL-4562-000E provides 3750Vrms isolation voltage, which is 25% lower than the 6N135M specification. Applications requiring the full 5000Vrms isolation rating must not use this part. Additionally, the operating temperature range is limited to -40°C to 85°C, excluding low-temperature operation below -40°C. The package footprint is smaller (0.300" versus 0.400"), which may affect PCB layout compatibility.

Q: Are all three parts ROHS3 compliant?

A: Yes. The 6N135M, 6N135G, and HCPL-4562-000E are all ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). All parts are suitable for applications subject to RoHS directives.

Q: What is the difference in package size between the 6N135M and HCPL-4562-000E?

A: The 6N135M uses an 8-DIP package with 0.400" (10.16mm) body width. The HCPL-4562-000E uses an 8-DIP package with 0.300" (7.62mm) body width. The smaller package may require PCB layout verification to ensure pin spacing compatibility with existing through-hole footprints.

Q: Which substitute part should be selected for cost optimization?

A: Selection must be based on electrical requirements, not cost alone. If 5000Vrms isolation is required, the 6N135G is the appropriate choice. If the application operates within -40°C to 85°C and does not require 5000Vrms isolation, the HCPL-4562-000E may be evaluated. Inventory availability is 3684 units (6N135M), 808 units (6N135G), and 1700 units (HCPL-4562-000E).

Q: Can the HCPL-4562-000E be used in high-temperature applications?

A: No. The HCPL-4562-000E maximum operating temperature is 85°C. The 6N135M and 6N135G both support operation to 100°C. Applications requiring operation above 85°C must use the 6N135M or 6N135G.

Q: Are there differences in current transfer ratio specifications between these parts?

A: The 6N135M and 6N135G both specify 7% to 50% current transfer ratio @ 16mA. The HCPL-4562-000E does not provide current transfer ratio specifications in the available data. Applications with specific current transfer ratio requirements should use the 6N135M or 6N135G.