H11A1FVM Equivalent & Substitute Parts

Part Overview

The H11A1FVM is an optoisolator transistor with base output manufactured by onsemi, featuring 7500Vpk isolation voltage in a 6-SMD surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The H11A1FVM provides galvanic isolation for low-speed switching applications with integrated base drive capability.

Substiute Parts

H11A1FVM

onsemiIn Stock: 1184H11A1FVM Datasheet

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H11A1

onsemiIn Stock: 19937H11A1 Datasheet

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H11A1X

Isocom Components 2004 LTDIn Stock: 904H11A1X Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the H11A1FVM is determined by the following critical parameters:

• Isolation Voltage: Minimum 7500Vpk required for equivalent functionality
• Output Type: Transistor with Base configuration mandatory
• Number of Channels: Single channel only
• Current Transfer Ratio: Minimum 50% @ 10mA
• Vce Saturation: Maximum 400mV
• Operating Temperature Range: Must support -40°C minimum
• Mounting Type: Surface mount preferred for direct replacement; through-hole alternatives require board redesign

The substitute parts H11A1 and H11A1X share the same base product number (H11A and H11A1 respectively) and core functional characteristics. However, both substitutes operate at reduced isolation voltage (5300Vrms) and employ through-hole mounting, requiring design consideration for applications demanding the original 7500Vpk isolation specification.

Parameter Comparison

Engineering Selection Recommendations

H11A1: This onsemi part maintains the same manufacturer lineage and functional characteristics as the H11A1FVM. However, it operates at 5300Vrms isolation voltage versus the original 7500Vpk specification, and requires through-hole mounting. Selection is appropriate for applications where the reduced isolation voltage is acceptable and board redesign for DIP footprint is feasible. Product status is obsolete.

H11A1X: This Isocom Components alternative provides active product status, ensuring ongoing availability and manufacturing support. It meets the same functional requirements as H11A1 with identical isolation voltage (5300Vrms) and through-hole DIP packaging. The H11A1X includes RoHS3 compliance certification. Selection is recommended for new designs or production continuity where isolation voltage reduction is acceptable and through-hole mounting is compatible with board layout.

For applications requiring the original 7500Vpk isolation specification, neither substitute provides equivalent isolation performance. Design review is necessary to confirm isolation voltage requirements before substitution.

Frequently Asked Questions (FAQ)

Q: Can H11A1 or H11A1X directly replace H11A1FVM on the existing PCB?

A: No. Both substitutes employ 6-DIP through-hole packaging, while the H11A1FVM uses 6-SMD surface mount. PCB redesign is required for footprint compatibility.

Q: What is the isolation voltage difference between H11A1FVM and the substitutes?

A: The H11A1FVM provides 7500Vpk isolation, while H11A1 and H11A1X provide 5300Vrms isolation. These are different measurement standards and voltage levels. Applications requiring 7500Vpk isolation cannot use the substitutes without design modification.

Q: Are H11A1 and H11A1X functionally equivalent?

A: Both parts share identical isolation voltage (5300Vrms), output type (Transistor with Base), and DIP packaging. H11A1X offers active product status and RoHS3 compliance, while H11A1 is obsolete. H11A1X is preferred for new applications.

Q: What is the difference between Vpk and Vrms isolation voltage specifications?

A: Vpk (peak voltage) and Vrms (RMS voltage) represent different measurement methods for isolation voltage. Direct numerical comparison requires conversion; these values are not interchangeable.

Q: Does H11A1X meet RoHS requirements?

A: Yes, H11A1X is RoHS3 compliant. H11A1FVM and H11A1 status is not specified in the provided data.

Q: Which substitute should be selected for new designs?

A: H11A1X is recommended for new designs due to active product status, ensuring long-term availability and manufacturing support. Design confirmation of isolation voltage requirements is necessary before selection.