H11B1SD Optoisolator Equivalent & Substitute Parts

Part Overview

The H11B1SD 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 H11B1SD is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substitute parts are selected based on functional compatibility within the optoisolator Darlington category, maintaining critical electrical parameters including isolation voltage, current transfer ratio, output configuration, and thermal operating range.

Substiute Parts

H11B1SD

onsemiIn Stock: 1077H11B1SD Datasheet

Current PartRFQ

H11B1SR2M

onsemiIn Stock: 4411H11B1SR2M Datasheet

DirectRFQ

H11B1SM

onsemiIn Stock: 12296H11B1SM Datasheet

SimilarRFQ

H11B1SMT&R

Isocom Components 2004 LTDIn Stock: 971H11B1SMT&R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the H11B1SD are grouped based on the following substitution criteria:

Direct Substitutes maintain the same isolation voltage (5300Vrms) and operating temperature range (-55°C ~ 100°C), ensuring drop-in compatibility for applications requiring maximum isolation performance.

Similar Substitutes operate at reduced isolation voltage (4170Vrms) with modified output specifications. These parts are suitable for applications where the lower isolation rating is acceptable and where enhanced output current capability (150mA vs. unspecified) provides design flexibility.

Key Parameters Determining Substitution:

• Isolation voltage (5300Vrms or 4170Vrms)
• Current transfer ratio (500% @ 1mA minimum)
• Output type (Darlington with Base)
• Operating temperature range
• Package configuration (6-SMD, Gull Wing)
• Mounting type (Surface Mount)

Parameter Comparison

Engineering Selection Recommendations

H11B1SR2M (onsemi): Active product status with ROHS3 compliance. Suitable for applications where 4170Vrms isolation is acceptable. Enhanced output current rating (150mA) and maximum output voltage (30V) provide expanded design margin. Operating temperature range reduced to -40°C ~ 100°C; verify compatibility for low-temperature applications below -40°C.

H11B1SM (onsemi): Active product status with ROHS3 compliance. Identical electrical specifications to H11B1SR2M. Supplied in tube packaging rather than tape & reel. Operating temperature range -40°C ~ 100°C applies. Select based on packaging requirements and procurement logistics.

H11B1SMT&R (Isocom Components 2004 LTD): Active product status with ROHS3 compliance. Maintains 5300Vrms isolation voltage and -55°C ~ 100°C operating range matching the H11B1SD. Turn-on and turn-off times (100µs each) are slower than H11B1SD (25µs, 18µs). Select when isolation voltage and temperature range are critical requirements and switching speed tolerance permits extended timing.

Frequently Asked Questions (FAQ)

Q: Can H11B1SR2M or H11B1SM replace H11B1SD in all applications?

A: H11B1SR2M and H11B1SM operate at 4170Vrms isolation, compared to H11B1SD at 5300Vrms. These parts are suitable only for applications where the lower isolation rating meets design requirements. Operating temperature range is also reduced to -40°C ~ 100°C; applications requiring operation below -40°C require H11B1SMT&R or continued use of H11B1SD stock.

Q: What is the difference between H11B1SR2M and H11B1SM?

A: Both parts are manufactured by onsemi with identical electrical specifications. The primary difference is packaging format: H11B1SR2M is supplied in tape & reel (TR), while H11B1SM is supplied in tube. Select based on assembly equipment compatibility and procurement volume requirements.

Q: Is H11B1SMT&R a direct replacement for H11B1SD?

A: H11B1SMT&R maintains the same 5300Vrms isolation voltage and -55°C ~ 100°C operating temperature range as H11B1SD. However, switching times are significantly slower (100µs turn-on/off vs. 25µs/18µs). This part is suitable for applications where isolation voltage and temperature range are critical and switching speed requirements are less stringent.

Q: Are all substitute parts RoHS compliant?

A: H11B1SR2M, H11B1SM, and H11B1SMT&R are all ROHS3 compliant. The original H11B1SD RoHS status is not specified in available documentation.

Q: What packaging options are available for substitutes?

A: H11B1SR2M is supplied in tape & reel (TR) format. H11B1SM is supplied in tube format. H11B1SMT&R is supplied in tape & reel (TR) format. All parts use 6-SMD, Gull Wing surface mount packages compatible with standard pick-and-place assembly equipment.