ICE3AS02 Equivalent & Substitute Parts

Part Overview

The ICE3AS02 is an offline switch flyback converter IC manufactured by Infineon Technologies, designed for isolated power management applications with 100kHz switching frequency. This device operates within a supply voltage range of 8.5V to 21V and integrates comprehensive fault protection including current limiting, overload, overvoltage, and overtemperature protection with soft start control features.

The ICE3AS02 is classified as obsolete product status. Identifying suitable substitute components is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications currently utilizing this topology.

Substiute Parts

ICE3AS02

Infineon TechnologiesIn Stock: 2863ICE3AS02 Datasheet

Current PartRFQ

ICE3AS03LJGXUMA1

Infineon TechnologiesIn Stock: 3635ICE3AS03LJGXUMA1 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ICE3AS02 is evaluated based on the following critical parameters that define functional equivalence:

Topology & Isolation: Both the main part and substitute must maintain flyback topology with isolated output configuration to preserve circuit functionality.

Switching Frequency: The 100kHz switching frequency is maintained across substitute options to ensure compatibility with existing transformer and filter designs.

Fault Protection Features: Current limiting, overload, overvoltage, and overtemperature protection must be present to maintain system reliability and safety margins.

Operating Temperature Range: The -25°C to 130°C junction temperature range establishes thermal compatibility requirements.

Supply Voltage Compatibility: While the ICE3AS02 operates at 8.5V ~ 21V, substitute parts may have extended voltage ranges (10.5V ~ 25V) that encompass the original specification, ensuring functional compatibility within the original design envelope.

Manufacturer Continuity: Infineon Technologies maintains the CoolSET®F3 series architecture, supporting direct substitution within the product family.

Parameter Comparison

Engineering Selection Recommendations

The ICE3AS03LJGXUMA1 serves as the active substitute for the obsolete ICE3AS02. Both devices maintain identical topology, switching frequency, fault protection architecture, and thermal operating range, establishing functional equivalence for offline flyback converter applications.

The ICE3AS03LJGXUMA1 is classified as active product status with ROHS3 compliance, ensuring long-term availability and regulatory alignment with current environmental standards. The extended supply voltage range (10.5V ~ 25V) encompasses the original ICE3AS02 specification (8.5V ~ 21V), confirming compatibility within existing design parameters.

The primary design consideration is the package transition from through-hole 8-DIP to surface-mount 8-SOIC. This change requires PCB layout modification but does not affect electrical functionality or performance characteristics. The startup voltage increase from 15V to 18V and duty cycle adjustment from 72% to 75% remain within acceptable design margins for applications originally specified for the ICE3AS02.

Frequently Asked Questions (FAQ)

Q: Can the ICE3AS03LJGXUMA1 directly replace the ICE3AS02 in existing designs?

A: Electrical substitution is valid based on topology, switching frequency, fault protection, and thermal specifications. However, PCB layout modification is required due to package change from 8-DIP through-hole to 8-SOIC surface-mount configuration.

Q: What are the key differences between these parts?

A: The primary differences are package type (through-hole versus surface-mount), supply voltage range (8.5V-21V versus 10.5V-25V), startup voltage (15V versus 18V), and duty cycle (72% versus 75%). Functional topology and protection features remain identical.

Q: Is the ICE3AS03LJGXUMA1 suitable for applications requiring the original 8.5V minimum supply voltage?

A: The ICE3AS03LJGXUMA1 specifies a 10.5V minimum supply voltage, which is higher than the original 8.5V specification. Design verification is required if the application operates below 10.5V supply voltage.

Q: What compliance certifications apply to the substitute part?

A: The ICE3AS03LJGXUMA1 is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. Both parts carry EAR99 export classification.

Q: Are there inventory considerations for this substitution?

A: The ICE3AS02 is obsolete with 2,781 pieces in stock. The ICE3AS03LJGXUMA1 is active product with 3,569 pieces available in tape and reel packaging, ensuring supply chain continuity for new production.