H11D1S Optoisolator Equivalent & Substitute Parts

Part Overview

The H11D1S is a 5300Vrms optoisolator transistor with base output manufactured by onsemi in a 6-SMD surface mount package. This component provides galvanic isolation for DC input signals with transistor output capability. The H11D1S is currently listed as obsolete, making equivalent substitute parts necessary for ongoing design support and production continuity. Substitute parts must maintain compatibility across isolation voltage, output characteristics, channel configuration, and thermal operating range.

Key Parameters

Parameter	H11D1S Value
Voltage - Isolation	5300Vrms
Number of Channels	1
Output Type	Transistor with Base
Voltage - Output (Max)	300V
Current - Output / Channel	100mA
Current Transfer Ratio (Min)	20% @ 10mA
Vce Saturation (Max)	400mV
Operating Temperature	-55°C ~ 100°C
Package / Case	6-SMD, Gull Wing
Mounting Type	Surface Mount
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the H11D1S are grouped based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

Isolation voltage rating (5300Vrms or higher)
Single channel configuration
Transistor with base output type
Maximum output voltage of 300V
Output current capability of 100mA per channel
Minimum current transfer ratio of 20% @ 10mA
Vce saturation maximum of 400mV
6-SMD, Gull Wing package configuration
Operating temperature range compatibility (-55°C to 100°C minimum)

Grouping Logic:

Group A (Direct Equivalents - 5300Vrms Isolation): Parts maintaining the exact 5300Vrms isolation specification with identical electrical characteristics. These include onsemi H11D1S variants and Vishay H11D1-X series parts.

Group B (Lower Isolation Voltage - 5000Vrms): Lite-On H11D1S-TA and H11D1S-TA1 parts with 5000Vrms isolation. These provide reduced isolation voltage but maintain all other critical output and thermal parameters.

Group C (Reduced Isolation Voltage - 4170Vrms): onsemi H11D1SM and H11D1SR2M parts with 4170Vrms isolation. These represent the lowest isolation rating among substitutes but maintain output specifications and thermal range.

Parameter Comparison

Parameter	H11D1S	H11D1-X009T	H11D1-X009	H11D1-X007T	H11D1-X007	H11D1S-TA1	H11D1S-TA	H11D1SM	H11D1SR2M
Manufacturer	onsemi	Vishay	Vishay	Vishay	Vishay	Lite-On	Lite-On	onsemi	onsemi
Voltage - Isolation	5300Vrms	5300Vrms	5300Vrms	5300Vrms	5300Vrms	5000Vrms	5000Vrms	4170Vrms	4170Vrms
Number of Channels	1	1	1	1	1	1	1	1	1
Output Type	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base
Voltage - Output (Max)	300V	300V	300V	300V	300V	300V	300V	300V	300V
Current - Output / Channel	100mA	100mA	100mA	100mA	100mA	100mA	100mA	100mA	100mA
Current Transfer Ratio (Min)	20% @ 10mA	20% @ 10mA	20% @ 10mA	20% @ 10mA	20% @ 10mA	20% @ 10mA	20% @ 10mA	20% @ 10mA	20% @ 10mA
Vce Saturation (Max)	400mV	400mV	400mV	400mV	400mV	400mV	400mV	400mV	400mV
Operating Temperature	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-40°C ~ 100°C	-40°C ~ 100°C
Package / Case	6-SMD, Gull Wing	6-SMD, Gull Wing	6-SMD, Gull Wing	6-SMD, Gull Wing	6-SMD, Gull Wing	6-SMD, Gull Wing	6-SMD, Gull Wing	6-SMD, Gull Wing	6-SMD, Gull Wing
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Type	Not specified	Tape & Reel (TR)	Tube	Tape & Reel (TR)	Tube	Tape & Reel (TR)	Tape & Reel (TR)	Tube	Tape & Reel (TR)

Engineering Selection Recommendations

For Direct Replacement (5300Vrms Isolation):

The Vishay H11D1-X009T optoisolator provides the most direct substitution path. This part maintains 5300Vrms isolation voltage identical to the H11D1S, operates across the full -55°C to 100°C temperature range, and carries ROHS3 compliance certification. The H11D1-X009T is available in Tape & Reel packaging with 41,201 units in stock, supporting high-volume production requirements. The H11D1-X009 (Tube packaging) offers the same electrical specifications with lower inventory availability.

For Active Product Status with Reduced Isolation (5000Vrms):

The Lite-On H11D1S-TA1 and H11D1S-TA optoisolators provide active product status with 5000Vrms isolation rating. Both parts maintain full output specifications, thermal operating range, and ROHS3 compliance. These parts are suitable for applications where 5000Vrms isolation meets system requirements. H11D1S-TA1 inventory is 952 units; H11D1S-TA inventory is 859 units.

For Lower Isolation Voltage Applications (4170Vrms):

The onsemi H11D1SM and H11D1SR2M optoisolators operate at 4170Vrms isolation with active product status and ROHS3 compliance. The H11D1SM (Tube packaging) has 12,620 units available; the H11D1SR2M (Tape & Reel) has 1,887 units available. These parts are applicable only where system isolation requirements are 4170Vrms or lower.

Packaging Considerations:

Tape & Reel packaging is recommended for automated assembly processes. Tube packaging is suitable for manual assembly or lower-volume applications. All substitute parts maintain the 6-SMD, Gull Wing surface mount configuration compatible with standard PCB assembly equipment.

Frequently Asked Questions (FAQ)

Q: Can the H11D1-X009T directly replace the H11D1S in existing designs?

A: Yes. The H11D1-X009T maintains identical isolation voltage (5300Vrms), output specifications (300V maximum, 100mA per channel), thermal range (-55°C to 100°C), and package configuration (6-SMD, Gull Wing). Both parts are manufactured to the same electrical specifications for transistor output optoisolators. The primary difference is manufacturer (Vishay vs. onsemi) and active product status.

Q: What is the minimum isolation voltage acceptable for H11D1S replacement?

A: Substitution is determined by application requirements. The H11D1S specifies 5300Vrms isolation. Parts with lower isolation ratings (5000Vrms or 4170Vrms) are only suitable if system design requirements permit reduced isolation voltage. Isolation voltage cannot be upgraded; only equal or higher ratings are acceptable substitutes.

Q: Are there differences in current transfer ratio between substitute parts?

A: All listed substitute parts maintain the minimum current transfer ratio of 20% @ 10mA specified for the H11D1S. This parameter is consistent across all alternatives and does not differentiate substitution suitability.

Q: What is the significance of product status (Active vs. Obsolete)?

A: The H11D1S is obsolete, meaning onsemi no longer manufactures or supports this part. All listed substitute parts carry Active product status, indicating current manufacturing and long-term availability. Active status ensures design continuity and supply chain reliability.

Q: Does packaging type (Tube vs. Tape & Reel) affect electrical performance?

A: No. Packaging type affects only handling, storage, and assembly process compatibility. Tube and Tape & Reel variants of the same part number maintain identical electrical specifications. Selection depends on production volume and assembly automation requirements.

Q: Are all substitute parts RoHS3 compliant?

A: All active substitute parts listed carry ROHS3 compliance certification. The original H11D1S does not specify RoHS status. RoHS3 compliance is relevant for applications subject to European Union environmental regulations.

Q: What is the operating temperature difference between H11D1SM and H11D1S?

A: The H11D1SM operates from -40°C to 100°C, while the H11D1S operates from -55°C to 100°C. The H11D1SM has a narrower low-temperature range. This difference is relevant only for applications requiring operation below -40°C.

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