H11D4SM Equivalent & Substitute Parts

Part Overview

The H11D4SM is a single-channel optoisolator with transistor output and base connection, manufactured by Isocom Components 2004 LTD. This component provides galvanic isolation between input and output circuits with a maximum isolation voltage of 7.5Vpk and supports DC input signals. The part is classified as Active and maintains full compliance with ROHS3 and REACH standards. Alternative models within the H11D series are available to support inventory optimization and supply chain continuity.

Substiute Parts

H11D4SM

Isocom Components 2004 LTDIn Stock: 749H11D4SM Datasheet

Current PartRFQ

H11D3XSM

Isocom Components 2004 LTDIn Stock: 1272H11D3XSM Datasheet

Parametric EquivalentRFQ

H11D4XSM

Isocom Components 2004 LTDIn Stock: 1217H11D4XSM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the H11D4SM are identified based on strict parametric equivalence within the H11D optoisolator series. The following criteria determine substitution eligibility:

• Single channel configuration (Number of Channels = 1)
• Isolation voltage of 7.5Vpk
• Current transfer ratio minimum of 20% @ 10mA
• Transistor output with base connection
• Maximum output voltage of 200V
• Output current capacity of 100mA per channel
• Forward voltage of 1.2V typical
• Maximum forward current of 60mA
• Vce saturation maximum of 400mV
• Operating temperature range of -55°C to 100°C
• Surface mount package in 6-SMD, Gull Wing configuration
• ROHS3 compliance and MSL Level 1 rating

All substitute parts maintain identical electrical performance and mechanical compatibility with the H11D4SM.

Parameter Comparison

Engineering Selection Recommendations

All three parts—H11D4SM, H11D3XSM, and H11D4XSM—are functionally equivalent and maintain Active product status. Selection between these parts may be based on inventory availability and supply chain considerations. The H11D3XSM currently has 1201 units in stock, the H11D4XSM has 1144 units, and the H11D4SM has 672 units available. All parts carry identical ROHS3 compliance, REACH unaffected status, and MSL Level 1 rating, ensuring consistent regulatory and environmental performance across substitution choices.

Frequently Asked Questions (FAQ)

Q: Can H11D3XSM and H11D4XSM be used interchangeably with H11D4SM?

A: Yes. All three parts share identical electrical specifications, isolation voltage, current transfer ratio, output characteristics, and operating temperature range. They are packaged identically in 6-SMD, Gull Wing configuration and maintain the same compliance certifications.

Q: Are there any differences in the mechanical footprint between these parts?

A: No. All three parts use the same 6-SMD, Gull Wing package configuration and are mechanically compatible for direct substitution on PCB layouts designed for the H11D4SM.

Q: Do all substitute parts meet the same regulatory requirements?

A: Yes. H11D3XSM, H11D4XSM, and H11D4SM are all ROHS3 compliant, REACH unaffected, and carry MSL Level 1 rating with unlimited moisture sensitivity protection.

Q: What is the basis for substitution between these H11D series parts?

A: Substitution is based on matching all critical electrical parameters: single-channel configuration, 7.5Vpk isolation voltage, 20% minimum current transfer ratio, transistor output with base connection, 200V maximum output voltage, 100mA output current, and -55°C to 100°C operating temperature range.

Q: Are there any performance differences in switching speed or saturation characteristics?

A: No. All three parts specify identical turn-on and turn-off times of 5µs and identical Vce saturation maximum of 400mV, ensuring equivalent switching performance and output characteristics.