IL250-X009 Equivalent & Substitute Parts

Part Overview

The IL250-X009 is an optoisolator transistor with base output manufactured by Vishay Semiconductor Opto Division. This component provides 5300Vrms isolation with a single channel configuration in a 6-SMD surface mount package. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement.

Key Parameters

Parameter	IL250-X009
Manufacturer	Vishay Semiconductor Opto Division
Category	Optoisolators
Number of Channels	1
Voltage - Isolation	5300Vrms
Current Transfer Ratio (Min)	50% @ 10mA
Output Type	Transistor with Base
Voltage - Output (Max)	30V
Voltage - Forward (Vf) (Typ)	1.2V
Current - DC Forward (If) (Max)	60 mA
Vce Saturation (Max)	400mV
Operating Temperature	-55°C ~ 100°C
Mounting Type	Surface Mount
Package / Case	6-SMD, Gull Wing
Input Type	AC, DC
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the IL250-X009 is determined by the following critical parameters:

Isolation Voltage: The IL250-X009 provides 5300Vrms isolation. Substitute parts must maintain isolation voltage at or above this level to ensure equivalent electrical safety performance.
Output Configuration: All substitutes must feature transistor output with base connection to maintain circuit compatibility.
Current Transfer Ratio (CTR): The IL250-X009 specifies 50% minimum CTR at 10mA. Substitutes with lower CTR values (20%, 10%) represent reduced performance and require circuit validation.
Package Type: The 6-SMD, Gull Wing surface mount package is maintained across all substitutes for mechanical compatibility.
Input Type: AC/DC input capability is preserved in all substitutes.
Output Voltage and Current: Maximum output voltage of 30V and forward current specifications must be compatible with circuit requirements.
Operating Temperature Range: The IL250-X009 operates from -55°C to 100°C. Substitutes with narrower ranges (-40°C to 100°C or -30°C to 100°C) may have temperature limitations.
Product Status: Active status substitutes provide ongoing availability and support, while obsolete alternatives may face future discontinuation.

Parameter Comparison

Parameter	IL250-X009	H11A1SM	H11AA1SM	H11AA1SMT&R	H11AA1SR2VM	H11AA2SM	H11AA3SM	H11AA4SM
Manufacturer	Vishay	onsemi	onsemi	Isocom	onsemi	onsemi	onsemi	onsemi
Voltage - Isolation	5300Vrms	4170Vrms	4170Vrms	7.5Vpk	4170Vrms	7500Vpk	7500Vpk	4170Vrms
Current Transfer Ratio (Min)	50% @ 10mA	50% @ 10mA	20% @ 10mA	20% @ 10mA	20% @ 10mA	10% @ 10mA	50% @ 10mA	100% @ 10mA
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
Voltage - Output (Max)	30V	30V	30V	35V	30V	30V	30V	30V
Voltage - Forward (Vf) (Typ)	1.2V	1.18V	1.17V	1.2V	1.17V	1.17V	1.17V	1.17V
Current - DC Forward (If) (Max)	60 mA	60 mA	60 mA	50 mA	60 mA	60 mA	60 mA	60 mA
Vce Saturation (Max)	400mV	400mV	400mV	400mV	400mV	400mV	400mV	400mV
Operating Temperature	-55°C ~ 100°C	-40°C ~ 100°C	-40°C ~ 100°C	-30°C ~ 100°C	-40°C ~ 100°C	-40°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
Input Type	AC, DC	DC	AC, DC	AC, DC	AC, DC	AC, DC	AC, DC	AC, DC
Product Status	Obsolete	Active	Active	Active	Active	Obsolete	Obsolete	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Active Status, Highest Compatibility)

H11AA4SM and H11AA1SR2VM are the recommended primary substitutes. H11AA4SM offers the highest current transfer ratio (100% @ 10mA) among active alternatives and maintains full AC/DC input compatibility. H11AA1SR2VM provides equivalent performance with tape and reel packaging for high-volume applications.

Secondary Substitutes (Active Status, Reduced Performance)

H11AA1SM and H11AA1SMT&R are active alternatives with reduced current transfer ratio (20% @ 10mA). These parts require circuit validation to confirm adequate drive capability. H11AA1SMT&R is packaged in tape and reel format.

Isolation Voltage Considerations

The IL250-X009 specifies 5300Vrms isolation. H11A1SM, H11AA1SM, H11AA1SR2VM, and H11AA4SM provide 4170Vrms isolation, representing a reduction of approximately 21%. H11AA1SMT&R, H11AA2SM, H11AA3SM, and H11AA2SMT&R, H11AA3SMT&R provide 7.5Vpk isolation, which is not directly comparable to Vrms specifications and requires detailed circuit analysis.

Temperature Range Limitations

All substitute parts operate from -40°C to -30°C minimum, compared to the IL250-X009 minimum of -55°C. Applications requiring operation below -40°C cannot use these substitutes without thermal analysis.

Compliance and Availability

All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating. Active status parts (H11AA4SM, H11AA1SM, H11AA1SR2VM, H11AA1SMT&R) provide ongoing manufacturer support and procurement availability.

Frequently Asked Questions (FAQ)

Q: Can H11AA4SM directly replace IL250-X009 in all applications?

A: H11AA4SM is mechanically and functionally compatible in 6-SMD surface mount applications. However, the isolation voltage is reduced from 5300Vrms to 4170Vrms. Circuit validation is required to confirm this reduction does not compromise electrical safety margins in your specific application.

Q: What is the difference between H11AA1SM and H11AA1SR2VM?

A: Both parts are manufactured by onsemi with identical electrical specifications (4170Vrms isolation, 20% minimum CTR). The primary difference is packaging: H11AA1SM is supplied in tube format, while H11AA1SR2VM is supplied in tape and reel format for automated assembly.

Q: Why do some substitutes show 7.5Vpk isolation instead of Vrms?

A: H11AA1SMT&R, H11AA2SM, H11AA2SMT&R, H11AA3SM, and H11AA3SMT&R are manufactured by Isocom Components and specify isolation in peak voltage (Vpk) rather than RMS voltage (Vrms). These specifications are not directly comparable to the IL250-X009 5300Vrms rating without detailed conversion analysis.

Q: Is H11AA4SM suitable for applications requiring -55°C operation?

A: No. H11AA4SM operates from -40°C minimum, which is 15°C above the IL250-X009 minimum of -55°C. Applications requiring operation at -55°C cannot use this substitute without thermal management modifications.

Q: What is the impact of lower current transfer ratio in H11AA1SM?

A: H11AA1SM specifies 20% minimum CTR compared to IL250-X009 50% minimum CTR. Lower CTR requires higher input current to achieve equivalent output drive. Circuit redesign may be necessary to ensure adequate base current for transistor saturation.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the environmental compliance of the IL250-X009.

Q: Can H11AA1SMT&R be used in manual assembly processes?

A: H11AA1SMT&R is supplied in tape and reel format, which is optimized for automated pick-and-place assembly. Manual assembly is possible but less efficient than tube-packaged alternatives like H11AA1SM.

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