H11A2M Equivalent & Substitute Parts

Part Overview

The H11A2M is a single-channel optoisolator with transistor output and base connection, manufactured by Lite-On Inc. It provides 5000Vrms isolation voltage in a 6-DIP through-hole package. The part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. Substitute parts must maintain compatibility across isolation voltage, output configuration, package form factor, and electrical performance parameters.

Substiute Parts

H11A2M

Lite-On Inc.In Stock: 12527H11A2M Datasheet

Current PartRFQ

4N26M

onsemiIn Stock: 509034N26M Datasheet

MFR RecommendedRFQ

H11A2G

Isocom Components 2004 LTDIn Stock: 1113H11A2G Datasheet

MFR RecommendedRFQ

H11A2M-V

Everlight Electronics Co LtdIn Stock: 1080H11A2M-V Datasheet

MFR RecommendedRFQ

H11A3M-V

Everlight Electronics Co LtdIn Stock: 976H11A3M-V Datasheet

MFR RecommendedRFQ

H11A4M-V

Everlight Electronics Co LtdIn Stock: 1086H11A4M-V Datasheet

MFR RecommendedRFQ

H11A5M-V

Everlight Electronics Co LtdIn Stock: 1084H11A5M-V Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the H11A2M is determined by the following criteria:

• Isolation Voltage: Substitute parts must provide 5000Vrms isolation or higher to maintain electrical safety margins
• Output Configuration: Must be transistor with base output to preserve circuit interface compatibility
• Package Form Factor: Must be 6-DIP through-hole with compatible pin spacing (0.400" or 0.300" pitch acceptable for standard DIP footprints)
• Current Transfer Ratio: Minimum 20% @ 10mA required for signal integrity
• Output Voltage Rating: Must support 30V or higher maximum output voltage
• Input Type: DC input required
• Vce Saturation: Maximum 500mV acceptable for switching performance

The following parts meet these substitution criteria:

• 4N26M (onsemi): 4170Vrms isolation, active status, compatible 6-DIP package
• H11A2G (Isocom Components 2004 LTD): Same H11A series, active status, identical package dimensions
• H11A2M-V (Everlight Electronics Co Ltd): Direct equivalent, 5000Vrms isolation, active status, enhanced temperature range
• H11A3M-V (Everlight Electronics Co Ltd): H11A series variant, 5000Vrms isolation, active status
• H11A4M-V (Everlight Electronics Co Ltd): H11A series variant, 5000Vrms isolation, active status
• H11A5M-V (Everlight Electronics Co Ltd): H11A series variant, 5000Vrms isolation, active status

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility)

H11A2M-V, H11A3M-V, H11A4M-V, and H11A5M-V from Everlight Electronics Co Ltd are direct functional equivalents with active product status. These parts maintain 5000Vrms isolation voltage, identical package dimensions (0.400" pitch), and extended operating temperature range (-55°C ~ 110°C). All are ROHS3 compliant. Selection among these variants depends on required current transfer ratio: H11A2M-V and H11A3M-V provide 20% minimum CTR, H11A4M-V provides 10% minimum CTR, and H11A5M-V provides 30% minimum CTR.

Secondary Substitute (Isolation Voltage Consideration)

4N26M from onsemi provides 4170Vrms isolation, which is lower than the H11A2M specification of 5000Vrms. This part is suitable only for applications where the reduced isolation voltage is acceptable. The 4N26M uses a 0.300" DIP pitch versus the H11A2M's 0.400" pitch, requiring PCB footprint verification. Active product status and ROHS3 compliance are confirmed.

Alternative Substitute (Series Compatibility)

H11A2G from Isocom Components 2004 LTD belongs to the H11A series with active product status and ROHS3 compliance. However, the isolation voltage specification of 7.5Vpk is significantly lower than the H11A2M's 5000Vrms and does not meet substitution criteria for high-voltage isolation applications. This part is listed as a reference only and is not recommended as a direct substitute.

Frequently Asked Questions (FAQ)

Q: Can 4N26M replace H11A2M in all applications?

A: 4N26M provides 4170Vrms isolation compared to H11A2M's 5000Vrms. Substitution is valid only if the application circuit design permits the lower isolation voltage. Additionally, 4N26M uses 0.300" DIP pitch while H11A2M uses 0.400" pitch; PCB footprint compatibility must be verified before substitution.

Q: What is the difference between H11A2M-V, H11A3M-V, H11A4M-V, and H11A5M-V?

A: All four parts from Everlight Electronics maintain identical isolation voltage (5000Vrms), package dimensions, and operating temperature range. The primary difference is the minimum current transfer ratio: H11A2M-V and H11A3M-V specify 20%, H11A4M-V specifies 10%, and H11A5M-V specifies 30%. Select based on the required CTR for your circuit design.

Q: Is H11A2G a suitable substitute?

A: H11A2G is not recommended as a direct substitute. Although it belongs to the H11A series and has active product status, its isolation voltage specification of 7.5Vpk is substantially lower than H11A2M's 5000Vrms and does not meet high-voltage isolation requirements.

Q: Are all recommended substitutes ROHS3 compliant?

A: H11A2M-V, H11A3M-V, H11A4M-V, and H11A5M-V are confirmed ROHS3 compliant. The original H11A2M does not specify RoHS status. 4N26M RoHS status is not specified in available data.

Q: What is the package pitch difference between H11A2M and 4N26M?

A: H11A2M uses 6-DIP with 0.400" (10.16mm) pitch. 4N26M uses 6-DIP with 0.300" (7.62mm) pitch. Standard DIP footprints may accommodate both, but PCB layout verification is required before substitution.

Q: Can I use H11A2M-V as a direct replacement for H11A2M?

A: Yes. H11A2M-V maintains the same isolation voltage (5000Vrms), output configuration, package dimensions, and electrical performance. H11A2M-V has active product status and extended operating temperature range (-55°C ~ 110°C versus -55°C ~ 100°C), making it a suitable direct replacement.