IRSF3021 Equivalent & Substitute Parts

Part Overview

The IRSF3021 is a Power Switch/Driver IC featuring 1:1 N-Channel configuration with 3A maximum output current in TO-220AB packaging. Manufactured by Infineon Technologies, this component is classified as a General Purpose power management device with auto restart and slew rate controlled features. The product is currently obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new designs requiring similar switching capabilities.

Substiute Parts

IRSF3021

Infineon TechnologiesIn Stock: 15423IRSF3021 Datasheet

Current PartRFQ

AVS08CB

STMicroelectronicsIn Stock: 3453AVS08CB Datasheet

MFR RecommendedRFQ

AVS10CB

STMicroelectronicsIn Stock: 2226AVS10CB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the IRSF3021 is based on the following critical parameters:

• Package Compatibility: TO-220-3 through-hole mounting
• Switching Configuration: Single output, low-side switching topology
• Current Handling: Maximum output current rating of 3A or greater
• Voltage Rating: Load voltage capability of 50V or greater
• Thermal Range: Operating temperature range supporting industrial applications
• Product Availability: Active status with current manufacturing and inventory

The substitute parts identified (AVS08CB and AVS10CB) share the TO-220-3 package and through-hole mounting characteristics. However, these parts represent a different device category (Thyristors) compared to the original power driver classification. Both substitutes provide enhanced voltage and current ratings beyond the IRSF3021 specifications, offering design flexibility for applications requiring higher performance margins.

Parameter Comparison

Engineering Selection Recommendations

For Active Production and New Designs:

AVS10CB is the preferred substitute when system design permits operation within its specifications. This part offers active manufacturing status, ROHS3 compliance, and the highest current and voltage ratings among available alternatives. Inventory availability of 2141 pieces supports production requirements.

AVS08CB serves as a secondary option with lower voltage and current ratings compared to AVS10CB, while maintaining active product status and ROHS3 compliance. This part is suitable for applications with reduced voltage or current demands.

Compliance Considerations:

Both substitute parts achieve ROHS3 compliance, addressing environmental regulatory requirements that the obsolete IRSF3021 does not meet. Selection between AVS08CB and AVS10CB should account for specific application voltage and current requirements, as both exceed the original part's 50V and 3A specifications.

Temperature Range Impact:

The IRSF3021 supports extended low-temperature operation (-55°C), which neither substitute fully matches. Applications requiring operation below -10°C require design review to confirm acceptability of the reduced temperature range.

Frequently Asked Questions (FAQ)

Q: Can AVS08CB or AVS10CB directly replace IRSF3021 in existing designs?

A: Direct replacement requires verification of circuit topology compatibility. While all three parts share TO-220-3 packaging and through-hole mounting, the substitute parts operate as thyristors rather than power drivers. Circuit redesign may be necessary to accommodate functional differences.

Q: What is the primary difference between AVS08CB and AVS10CB?

A: Both are internally triggered thyristors in TO-220-3 packaging. AVS10CB provides higher voltage (600V vs 500V) and current (8A vs 5A) ratings. Selection depends on application requirements for maximum voltage and current handling.

Q: Are the substitute parts suitable for low-temperature applications?

A: AVS08CB operates from -10°C minimum, and AVS10CB from 0°C minimum. Applications requiring operation below these temperatures require alternative solutions, as the original IRSF3021 supports -55°C operation.

Q: What is the inventory status for these parts?

A: IRSF3021 remains in stock (15326 pieces) despite obsolete status. AVS10CB has 2141 pieces available, and AVS08CB has 3365 pieces available, both from active manufacturing.

Q: Do the substitute parts meet current environmental compliance standards?

A: Yes. Both AVS08CB and AVS10CB are ROHS3 compliant. The original IRSF3021 is RoHS non-compliant, making the substitutes preferable for applications subject to environmental regulations.