ICE3AS02G Equivalent & Substitute Parts

Part Overview

The ICE3AS02G is an offline switch IC designed for flyback converter topologies, manufactured by Infineon Technologies as part of the CoolSET®F3 series. This device operates at 100kHz switching frequency with integrated fault protection including current limiting, open loop, overload, overtemperature, and overvoltage protection. The ICE3AS02G is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations where legacy component availability is constrained.

Substiute Parts

ICE3AS02G

Infineon TechnologiesIn Stock: 4296ICE3AS02G Datasheet

Current PartRFQ

ICE3AS03LJGXUMA1

Infineon TechnologiesIn Stock: 3635ICE3AS03LJGXUMA1 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ICE3AS02G is determined by strict alignment of the following critical parameters:

Mandatory Matching Criteria:

• Topology: Flyback converter operation
• Switching Frequency: 100kHz
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• Output Isolation: Isolated
• Fault Protection: Current Limiting, Open Loop, Over Load, Over Temperature, Over Voltage

Allowable Parameter Variations:

• Supply Voltage Range: The substitute may operate within a different but overlapping voltage window, provided the application's operating point falls within both ranges
• Startup Voltage: May differ between parts
• Duty Cycle: May vary within the design constraints of the specific topology
• Control Features: Variations in control implementation are acceptable if core protection and isolation functions are preserved

The ICE3AS03LJGXUMA1 meets all mandatory matching criteria and is classified as an active product, providing long-term availability and supply chain continuity.

Parameter Comparison

Engineering Selection Recommendations

The ICE3AS03LJGXUMA1 is the qualified substitute for the obsolete ICE3AS02G based on the following engineering criteria:

Functional Equivalence: Both devices implement identical flyback converter topology with 100kHz switching frequency, matching package geometry (8-SOIC), and equivalent fault protection architecture. Pin compatibility is confirmed through identical package specifications.

Supply Voltage Consideration: The ICE3AS03LJGXUMA1 operates within the range 10.5V ~ 25V, compared to the original 8.5V ~ 21V. Applications operating within the overlapping range (10.5V ~ 21V) require no circuit modification. Systems requiring operation below 10.5V or above 21V must be evaluated against the substitute's specifications.

Startup Voltage Difference: The substitute requires 18V startup voltage versus 15V for the original part. This parameter must be verified against the application's bias supply design to ensure adequate startup margin under minimum input voltage conditions.

Product Status and Compliance: The ICE3AS03LJGXUMA1 is classified as active product with ROHS3 compliance, ensuring long-term availability and regulatory alignment. The original ICE3AS02G is obsolete, making the substitute the only viable path for continued system support.

Packaging and Supply Chain: The substitute is supplied in Tape & Reel format, standard for production environments. Both devices share identical moisture sensitivity (MSL 3) and environmental compliance classifications (REACH Unaffected, EAR99, HTSUS 8542.31.0001).

Frequently Asked Questions (FAQ)

Q: Can the ICE3AS03LJGXUMA1 be used as a direct replacement for the ICE3AS02G in existing designs?

A: Pin-level compatibility is confirmed through identical 8-SOIC package specifications. However, the higher startup voltage (18V vs. 15V) and extended supply voltage range (10.5V ~ 25V vs. 8.5V ~ 21V) must be evaluated against your specific application's bias supply and input voltage operating window. If your application operates within the overlapping voltage range (10.5V ~ 21V) and provides adequate startup voltage margin, direct substitution is feasible without circuit modification.

Q: What is the significance of the duty cycle difference (72% vs. 75%)?

A: Duty cycle is a characteristic of the specific converter design and operating point rather than a fixed device parameter. The variation between 72% and 75% reflects differences in the internal control implementation between the two device generations. This difference is within acceptable engineering tolerance for flyback converter topologies and does not preclude substitution.

Q: Why does the substitute have a higher startup voltage requirement?

A: The ICE3AS03LJGXUMA1 represents a later generation of the CoolSET®F3 architecture with modified internal bias circuitry. The 18V startup requirement versus 15V for the original part reflects this design evolution. Verify that your bias supply design provides adequate voltage margin above 18V under minimum input voltage conditions.

Q: Are there any compliance or regulatory differences between these parts?

A: Both devices share identical REACH status (REACH Unaffected), export classification (EAR99), and tariff codes (HTSUS 8542.31.0001). The substitute additionally carries ROHS3 compliance certification, which may be required for new designs or systems subject to updated regulatory requirements.

Q: What is the impact of the different packaging formats (bulk vs. Tape & Reel)?

A: Packaging format affects supply chain logistics and handling but has no functional impact on device performance. Tape & Reel format is standard for production assembly environments and provides improved component handling and automated placement compatibility.

Q: How should I verify compatibility for my specific application?

A: Confirm that your application's operating point falls within the overlapping supply voltage range (10.5V ~ 21V) and that your bias supply design provides startup voltage margin above 18V. Verify that the identical fault protection features (current limiting, overload, overtemperature, overvoltage) meet your system's protection requirements. Consult the detailed device datasheets for both parts to confirm pin-level functional equivalence within your specific converter topology.