H11B2S Equivalent & Substitute Parts

Part Overview

The H11B2S is an optoisolator with Darlington output and base connection, manufactured by onsemi. This component provides 5300Vrms isolation in a 6-SMD surface mount package. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring similar functionality.

Substiute Parts

H11B2S

onsemiIn Stock: 1106H11B2S Datasheet

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H11B1SM

onsemiIn Stock: 12296H11B1SM Datasheet

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H11B2SM

Isocom Components 2004 LTDIn Stock: 12410H11B2SM Datasheet

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H11B2SMT&R

Isocom Components 2004 LTDIn Stock: 808H11B2SMT&R Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the H11B2S is determined by the following critical parameters:

• Package compatibility: 6-SMD, Gull Wing surface mount configuration
• Output stage: Darlington with Base output type
• Single channel: 1 channel configuration
• Isolation voltage: Minimum 5300Vrms or equivalent
• Current transfer ratio: Minimum 200% @ 1mA
• Operating temperature range: Support for -55°C to 100°C or compatible subset
• Input type: DC input
• Vce saturation: Maximum 1V

Three substitute parts meet the core functional requirements with variations in isolation voltage rating and switching speed characteristics.

Parameter Comparison

Engineering Selection Recommendations

H11B1SM (onsemi): Active product status with higher current transfer ratio (500% @ 1mA). Isolation voltage is 4170Vrms, which is lower than the H11B2S. Switching speed matches the original (25µs, 18µs). Operating temperature range is -40°C to 100°C, which does not extend to -55°C. Select this substitute when lower isolation voltage is acceptable and higher current transfer ratio is beneficial.

H11B2SM (Isocom Components 2004 LTD): Active product with Tube packaging. Isolation voltage specification differs (7.5Vpk). Switching speed is slower (125µs, 100µs) compared to the H11B2S. Operating temperature range matches (-55°C to 100°C). RoHS3 compliant. Select this substitute when packaging format and compliance certifications are primary considerations.

H11B2SMT&R (Isocom Components 2004 LTD): Active product with Tape & Reel packaging. Identical electrical specifications to H11B2SM. Switching speed is slower (125µs, 100µs). Operating temperature range matches (-55°C to 100°C). RoHS3 compliant. Select this substitute when Tape & Reel packaging is required for automated assembly.

Frequently Asked Questions (FAQ)

Q: Can H11B1SM replace H11B2S in all applications? A: H11B1SM is functionally compatible for the Darlington output stage and switching characteristics. However, the isolation voltage is 4170Vrms versus 5300Vrms on the H11B2S. Applications requiring 5300Vrms isolation must not use H11B1SM. Additionally, the operating temperature minimum is -40°C instead of -55°C.

Q: What is the difference between H11B2SM and H11B2SMT&R? A: Both parts are electrically identical. The difference is packaging format: H11B2SM is supplied in Tube packaging, while H11B2SMT&R is supplied in Tape & Reel format. Select based on assembly process requirements.

Q: Are the Isocom parts (H11B2SM, H11B2SMT&R) direct replacements for the onsemi H11B2S? A: Both Isocom parts maintain the same package (6-SMD, Gull Wing), output type (Darlington with Base), and operating temperature range (-55°C to 100°C). However, isolation voltage specification differs (7.5Vpk versus 5300Vrms). Verify isolation voltage requirements before substitution.

Q: Why is switching speed different in the Isocom substitutes? A: H11B2SM and H11B2SMT&R have turn-on/turn-off times of 125µs and 100µs respectively, compared to 25µs and 18µs for the H11B2S. Applications with timing-critical requirements must account for this difference.

Q: Which substitute has the best availability? A: H11B1SM has 12,200 pcs in stock, H11B2SM has 12,300 pcs in stock, and H11B2SMT&R has 773 pcs in stock. All are active products with current manufacturing status.