H11AA4SVM Optoisolator Equivalent & Substitute Parts

Part Overview

The H11AA4SVM is an optoisolator transistor with base output manufactured by onsemi, designed for AC and DC input applications requiring galvanic isolation up to 4170Vrms. This single-channel device features a transistor output with base connection, rated for 50mA output current and 30V maximum output voltage. The component is actively produced and ROHS3 compliant, making it suitable for industrial and consumer electronics requiring high-voltage isolation.

Substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, manufacturer discontinuation, or specific packaging preferences while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Voltage - Isolation	4170Vrms
Number of Channels	1
Current Transfer Ratio (Min)	100% @ 10mA
Output Type	Transistor with Base
Voltage - Output (Max)	30V
Current - Output / Channel	50mA
Vce Saturation (Max)	400mV
Operating Temperature	-40°C ~ 100°C
Mounting Type	Surface Mount
Package / Case	6-SMD, Gull Wing
Input Type	AC, DC

Substitute Part Grouping Explanation

Substitute parts for the H11AA4SVM are classified into two categories based on electrical parameter alignment:

Parametric Equivalents maintain identical isolation voltage (4170Vrms), current transfer ratio minimum (100% @ 10mA), output current (50mA), and thermal operating range (-40°C ~ 100°C). These parts differ only in packaging format (Tube vs. Bulk) or manufacturer source while preserving all critical electrical specifications.

Similar Parts provide functional substitution with modified isolation voltage (5300Vrms) or current transfer ratio specifications. These parts are suitable when application requirements permit higher isolation ratings or different transfer ratio performance.

Critical parameters determining substitution eligibility:

Voltage - Isolation rating
Current Transfer Ratio (Min)
Output current capability
Vce Saturation performance
Operating temperature range
Package compatibility (6-SMD, Gull Wing)

Parameter Comparison

Part Number	Manufacturer	Voltage - Isolation	Current Transfer Ratio (Min)	Current - Output / Channel	Vce Saturation (Max)	Operating Temperature	Packaging	Product Status
H11AA4SVM	onsemi	4170Vrms	100% @ 10mA	50mA	400mV	-40°C ~ 100°C	Bulk	Active
H11AA4SM	onsemi	4170Vrms	100% @ 10mA	50mA	400mV	-40°C ~ 100°C	Tube	Active
H11AA4SDM	Fairchild Semiconductor	4170Vrms	100% @ 10mA	50mA	400mV	-40°C ~ 100°C	Bulk	Active
H11AA1-X007T	Vishay Semiconductor Opto Division	5300Vrms	20% @ 10mA	Not specified	400mV	-55°C ~ 100°C	Tape & Reel (TR)	Active
IL252-X007T	Vishay Semiconductor Opto Division	5300Vrms	100% @ 10mA	Not specified	400mV	-55°C ~ 100°C	Tape & Reel (TR)	Active

Engineering Selection Recommendations

Direct Parametric Equivalents (H11AA4SM, H11AA4SDM): These parts maintain all critical electrical specifications identical to the H11AA4SVM. Selection between these options depends solely on packaging requirements. H11AA4SM in Tube packaging and H11AA4SDM in Bulk packaging are suitable for direct substitution in applications where the original part becomes unavailable. All three parts carry ROHS3 compliance and active product status.

Higher Isolation Rating Alternatives (H11AA1-X007T, IL252-X007T): These Vishay components provide 5300Vrms isolation, exceeding the H11AA4SVM specification by 1130Vrms. IL252-X007T maintains the 100% current transfer ratio minimum, while H11AA1-X007T operates at 20% minimum transfer ratio. Both extend the operating temperature range to -55°C. These parts are suitable for applications requiring enhanced isolation margins or expanded low-temperature operation. Both maintain ROHS3 compliance and active production status.

Frequently Asked Questions (FAQ)

Q: Can H11AA4SM replace H11AA4SVM directly in production? A: Yes. H11AA4SM is a parametric equivalent differing only in packaging format (Tube vs. Bulk). All electrical specifications, isolation voltage, current transfer ratio, output current, and thermal range are identical. Packaging compatibility with your assembly process is the only consideration.

Q: What is the difference between parametric equivalents and similar parts? A: Parametric equivalents (H11AA4SM, H11AA4SDM) maintain identical isolation voltage (4170Vrms) and current transfer ratio (100% @ 10mA). Similar parts (H11AA1-X007T, IL252-X007T) feature higher isolation voltage (5300Vrms) and may have different transfer ratio specifications. Similar parts are suitable when application requirements permit these parameter variations.

Q: Is IL252-X007T compatible with H11AA4SVM applications? A: IL252-X007T provides functional compatibility with enhanced isolation performance (5300Vrms vs. 4170Vrms) and maintains the 100% current transfer ratio minimum. The extended temperature range (-55°C ~ 100°C) offers broader operational capability. Compatibility depends on whether your application can accommodate the higher isolation rating and Tape & Reel packaging format.

Q: Why does H11AA1-X007T show lower current transfer ratio? A: H11AA1-X007T specifies 20% minimum current transfer ratio compared to 100% for the H11AA4SVM. This represents a different device variant within the H11 optoisolator family. Selection requires verification that your circuit design accommodates this reduced transfer ratio specification.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance status, consistent with the H11AA4SVM. All parts are actively produced and carry EAR99 ECCN classification.

Q: What packaging formats are available? A: H11AA4SVM and H11AA4SDM are supplied in Bulk packaging. H11AA4SM is supplied in Tube format. H11AA1-X007T and IL252-X007T are supplied in Tape & Reel (TR) format. Packaging selection depends on your assembly process and quantity requirements.

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