H11AG2SD Equivalent & Substitute Parts

Part Overview

The H11AG2SD is an optoisolator transistor with base output manufactured by onsemi, designed for high-voltage isolation applications requiring 5300Vrms isolation rating. This component features a single channel configuration with transistor output and integrated base connection, housed in a 6-SMD surface mount package. The H11AG2SD is classified as obsolete, making identification of compatible substitute parts essential for ongoing design support and procurement planning.

Substiute Parts

H11AG2SD

onsemiIn Stock: 1017H11AG2SD Datasheet

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H11AG1SR2M

onsemiIn Stock: 128082H11AG1SR2M Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the H11AG2SD is determined by compatibility across the following critical parameters:

Mandatory Compatibility Criteria:

• Single channel configuration (Number of Channels = 1)
• Transistor with base output type
• 6-SMD, Gull Wing surface mount package
• DC input type
• Maximum output voltage of 30V
• Maximum output current of 50mA per channel
• Maximum Vce saturation of 400mV
• Turn on/off time of 5µs typical

Isolation Voltage Consideration: The H11AG2SD specifies 5300Vrms isolation. Substitute parts must maintain isolation voltage at or above the application requirement. Lower isolation ratings represent functional substitutes only when system design permits reduced isolation margins.

Current Transfer Ratio: The H11AG2SD minimum CTR is 50% @ 1mA. Substitute parts with higher CTR values (such as 100% @ 1mA) provide improved performance characteristics while maintaining functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

H11AG1SR2M as Substitute for H11AG2SD:

The H11AG1SR2M is an active production alternative to the obsolete H11AG2SD. Both components share identical electrical and mechanical specifications across output characteristics, switching performance, and package configuration.

Key Differences Requiring Evaluation:

1. Isolation Voltage: The H11AG1SR2M provides 4170Vrms isolation compared to the H11AG2SD's 5300Vrms. Applications requiring the full 5300Vrms isolation margin must evaluate whether the 1130Vrms reduction is acceptable within system design constraints.

2. Current Transfer Ratio: The H11AG1SR2M specifies 100% @ 1mA minimum CTR versus the H11AG2SD's 50% @ 1mA. This represents improved performance with higher gain characteristics.

3. Operating Temperature Range: The H11AG1SR2M operates from -40°C to 100°C, compared to the H11AG2SD's -55°C to 100°C. Applications requiring operation below -40°C cannot use this substitute.

4. Compliance Status: The H11AG1SR2M carries ROHS3 compliance certification, supporting modern supply chain and environmental requirements.

5. Packaging: The H11AG1SR2M is supplied in Tape & Reel format, standard for high-volume production environments.

Frequently Asked Questions (FAQ)

Q: Can H11AG1SR2M directly replace H11AG2SD in existing designs?

A: Direct replacement is possible if the application does not require the full 5300Vrms isolation rating and operates within the -40°C to 100°C temperature range. The identical output voltage, current, switching time, and package configuration ensure mechanical and electrical compatibility at the board level.

Q: What is the significance of the lower isolation voltage in H11AG1SR2M?

A: Isolation voltage rating defines the maximum voltage differential that can be safely applied across the optoisolator's isolation barrier. The H11AG1SR2M's 4170Vrms rating is suitable for applications where system design margins permit this level of isolation. Applications with isolation requirements exceeding 4170Vrms must retain the H11AG2SD or identify alternative parts with higher isolation ratings.

Q: Does the higher Current Transfer Ratio of H11AG1SR2M affect circuit design?

A: The H11AG1SR2M's 100% minimum CTR provides higher optical coupling efficiency compared to the H11AG2SD's 50% minimum. This typically results in improved signal transmission with lower input current requirements. Existing circuit designs will function with the H11AG1SR2M; however, input drive circuits may be optimized for reduced power consumption.

Q: Are there packaging differences between these parts?

A: Both components use identical 6-SMD, Gull Wing surface mount packages. The H11AG1SR2M is supplied in Tape & Reel format for automated assembly, while the H11AG2SD packaging format is not specified. This difference affects procurement and handling but does not impact board-level compatibility.

Q: What compliance certifications should be considered for new designs?

A: The H11AG1SR2M carries ROHS3 compliance certification, meeting current environmental and supply chain requirements. Both parts maintain REACH Unaffected status and unlimited moisture sensitivity level (MSL 1), supporting standard storage and handling procedures.