H11B2SD Equivalent & Substitute Parts

Part Overview

The H11B2SD is an optoisolator Darlington with base output manufactured by onsemi, featuring 5300Vrms 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 procurement.

The H11B2SD provides single-channel optoisolation with Darlington output configuration, suitable for applications requiring high voltage isolation and DC input control. Substitution is driven by product availability and the need for active alternatives that maintain functional compatibility within specified electrical and mechanical parameters.

Key Parameters

Parameter	H11B2SD
Manufacturer	onsemi
Category	Optoisolators
Number of Channels	1
Voltage - Isolation	5300Vrms
Current Transfer Ratio (Min)	200% @ 1mA
Output Type	Darlington with Base
Voltage - Output (Max)	25V
Vce Saturation (Max)	1V
Operating Temperature	-55°C ~ 100°C
Mounting Type	Surface Mount
Package / Case	6-SMD, Gull Wing
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the H11B2SD is evaluated based on the following critical parameters that define functional compatibility:

Number of Channels: Must be 1 (single channel)
Output Type: Must be Darlington with Base
Mounting Type: Must be Surface Mount
Package / Case: Must be 6-SMD, Gull Wing
Input Type: Must be DC

Substitute parts are grouped into two categories based on isolation voltage specification:

Category A - High Isolation Voltage (≥4170Vrms): Parts maintaining isolation voltage at or above 4170Vrms, suitable for applications with strict high-voltage isolation requirements.

Category B - Lower Isolation Voltage (<4170Vrms): Parts with reduced isolation voltage specifications, applicable to designs where lower isolation ratings are acceptable.

Parameter Comparison

Parameter	H11B2SD	H11B1SR2M	H11B2SM	H11B2SMT&R
Manufacturer	onsemi	onsemi	Isocom Components 2004 LTD	Isocom Components 2004 LTD
Number of Channels	1	1	1	1
Voltage - Isolation	5300Vrms	4170Vrms	7.5Vpk	7.5Vpk
Current Transfer Ratio (Min)	200% @ 1mA	500% @ 1mA	200% @ 1mA	200% @ 1mA
Output Type	Darlington with Base	Darlington with Base	Darlington with Base	Darlington with Base
Voltage - Output (Max)	25V	30V	30V	30V
Vce Saturation (Max)	1V	1V	1V	1V
Operating Temperature	-55°C ~ 100°C	-40°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	6-SMD, Gull Wing	6-SMD, Gull Wing	6-SMD, Gull Wing	6-SMD, Gull Wing
Product Status	Obsolete	Active	Active	Active
Packaging	Bulk	Tape & Reel (TR)	Tube	Tape & Reel (TR)

Engineering Selection Recommendations

H11B1SR2M (onsemi): This part is active and maintains high isolation voltage at 4170Vrms, meeting the majority of electrical specifications of the H11B2SD. The H11B1SR2M offers higher current transfer ratio (500% @ 1mA) and increased maximum output voltage (30V). Operating temperature range is reduced to -40°C ~ 100°C. This part is supplied in Tape & Reel packaging and is RoHS3 compliant.

H11B2SM (Isocom Components 2004 LTD): This part is active with identical current transfer ratio and operating temperature range (-55°C ~ 100°C) to the H11B2SD. However, isolation voltage is specified as 7.5Vpk, which is significantly lower than the H11B2SD. Maximum output voltage is 30V. This part is supplied in Tube packaging and is RoHS3 compliant.

H11B2SMT&R (Isocom Components 2004 LTD): This part is active with identical current transfer ratio and operating temperature range (-55°C ~ 100°C) to the H11B2SD. Isolation voltage is specified as 7.5Vpk. Maximum output voltage is 30V. This part is supplied in Tape & Reel packaging and is RoHS3 compliant.

Selection should prioritize H11B1SR2M for applications requiring isolation voltage above 4000Vrms. H11B2SM and H11B2SMT&R are suitable only for applications where lower isolation voltage specifications are acceptable.

Frequently Asked Questions (FAQ)

Q: Can H11B2SM or H11B2SMT&R directly replace H11B2SD in high-voltage isolation applications?

A: No. The H11B2SM and H11B2SMT&R specify 7.5Vpk isolation voltage, which is substantially lower than the H11B2SD's 5300Vrms. These parts are suitable only for applications with reduced isolation voltage requirements.

Q: What is the difference between H11B2SM and H11B2SMT&R?

A: Both parts are manufactured by Isocom Components 2004 LTD with identical electrical specifications. The primary difference is packaging: H11B2SM is supplied in Tube, while H11B2SMT&R is supplied in Tape & Reel (TR).

Q: Does H11B1SR2M meet the temperature range of H11B2SD?

A: H11B1SR2M operates from -40°C ~ 100°C, which is narrower than the H11B2SD's -55°C ~ 100°C range. Applications requiring operation below -40°C must use H11B2SM, H11B2SMT&R, or the original H11B2SD.

Q: Are all substitute parts RoHS compliant?

A: H11B1SR2M is RoHS3 compliant. H11B2SM and H11B2SMT&R are RoHS3 compliant. The original H11B2SD does not specify RoHS status.

Q: What packaging options are available for substitutes?

A: H11B1SR2M is available in Tape & Reel (TR). H11B2SM is available in Tube. H11B2SMT&R is available in Tape & Reel (TR). The original H11B2SD is supplied in bulk packaging.

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