H11L2 Equivalent & Substitute Parts Reference

Part Overview

The H11L2 is a logic output optoisolator manufactured by onsemi, designed for single-channel isolation applications requiring 5300Vrms isolation voltage. This component features an open collector output configuration with 1MHz data rate capability and 50mA output current per channel in a 6-DIP through-hole package.

The H11L2 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support legacy system maintenance and repairs.

Substiute Parts

H11L2

onsemiIn Stock: 4116H11L2 Datasheet

Current PartRFQ

H11L2VM

onsemiIn Stock: 22464H11L2VM Datasheet

SimilarRFQ

6N136

onsemiIn Stock: 501706N136 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the H11L2 is determined by the following critical parameters:

Primary Substitution Criteria:

• Single-channel optoisolator configuration
• Open collector output type
• Through-hole 6-DIP or 8-DIP package compatibility
• DC input type
• Isolation voltage rating (minimum 2500Vrms acceptable for most applications)
• 1MHz data rate capability
• Output current capability (minimum 8mA required)

Identified Substitute Parts:

H11L2VM (onsemi) - Direct form, fit, and function substitute. Same manufacturer, same base product family, active product status, identical package, same channel count and output type. Isolation voltage is 4170Vrms (lower than original but within acceptable range for most applications). Includes complete electrical specifications and RoHS3 compliance.

6N136 (onsemi) - Functional substitute with package variation. Same manufacturer, single-channel configuration, through-hole mounting. Output type differs (transistor with base vs. open collector), requiring circuit redesign. Package is 8-DIP instead of 6-DIP. Isolation voltage is 2500Vrms (significantly lower). Obsolete status matches original part.

Parameter Comparison

Engineering Selection Recommendations

H11L2VM is the primary substitute for H11L2 applications. This part maintains identical form factor (6-DIP package), same channel count, same output type (open collector), and equivalent data rate performance. The reduction in isolation voltage from 5300Vrms to 4170Vrms is acceptable for most industrial and consumer applications operating below 4kV isolation requirements. H11L2VM is currently in active production status with full RoHS3 compliance, ensuring long-term availability and regulatory alignment. Electrical specifications are fully documented, including propagation delay, rise/fall times, and supply voltage range.

6N136 is a functional alternative only when circuit redesign is acceptable. The transistor-with-base output configuration requires different biasing and pull-up resistor networks compared to open collector designs. The 8-DIP package requires PCB layout modification. The 2500Vrms isolation rating is suitable only for applications with lower isolation voltage requirements. Output current is limited to 8mA, which may be insufficient for high-impedance load applications. This part is obsolete, presenting long-term supply risk.

For new designs or system upgrades, H11L2VM is the recommended selection. For legacy system repairs requiring exact form-fit-function compatibility with the original H11L2, H11L2VM provides the most direct path forward.

Frequently Asked Questions (FAQ)

Q: Can H11L2VM directly replace H11L2 without circuit modification?

A: H11L2VM is a direct pin-compatible substitute. Both parts use identical 6-DIP package pinouts, open collector output configuration, and DC input type. No circuit modification is required for basic functionality. However, the reduced isolation voltage (4170Vrms vs. 5300Vrms) should be evaluated against your application's isolation requirements.

Q: What is the isolation voltage difference between H11L2 and H11L2VM, and does it matter?

A: H11L2 provides 5300Vrms isolation; H11L2VM provides 4170Vrms. The 1130Vrms difference is significant in high-voltage applications. If your circuit operates below 4kV isolation requirements, H11L2VM is suitable. If your design specifically requires 5300Vrms isolation, H11L2VM is not appropriate.

Q: Why is 6N136 listed as a substitute if it has a different output type?

A: 6N136 is a functional alternative for applications where transistor-with-base output can replace open collector output through circuit redesign. It is not a direct substitute. The different output type, lower isolation voltage, reduced output current, and different package size require significant circuit and PCB modifications.

Q: Is H11L2VM RoHS compliant?

A: Yes, H11L2VM is ROHS3 compliant. The original H11L2 is RoHS non-compliant. If your application or supply chain requires RoHS compliance, H11L2VM meets this requirement.

Q: What is the current availability status of these parts?

A: H11L2VM is in active production (22,400 pcs in stock). H11L2 and 6N136 are both obsolete, indicating limited or no future availability. For new procurement, H11L2VM is the only part with assured long-term supply.

Q: Can I use 6N136 in a 6-DIP socket designed for H11L2?

A: No. 6N136 uses an 8-DIP package, which is physically incompatible with 6-DIP sockets. PCB redesign is required.