IXSA15N120B IGBT Equivalent & Substitute Parts

Part Overview

The IXSA15N120B is a 1200V, 30A IGBT manufactured by IXYS in a Surface Mount TO-263AA package. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing design requirements and production continuity. The IXSA15N120B operates at maximum junction temperatures between -55°C and 150°C and is suitable for high-voltage switching applications requiring 150W power dissipation.

Substiute Parts

IXSA15N120B

IXYSIn Stock: 804IXSA15N120B Datasheet

Current PartRFQ

IXGA20N120

IXYSIn Stock: 776IXGA20N120 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IXSA15N120B is determined by the following critical electrical and mechanical parameters:

Voltage Rating: The substitute part must maintain the 1200V collector-emitter breakdown voltage to ensure compatibility with the application's voltage stress requirements.

Package Type: The substitute must use the TO-263-3 D2PAK Surface Mount package to ensure mechanical and thermal compatibility with existing PCB layouts and thermal management designs.

IGBT Type: The substitute must be a PT-type IGBT to maintain consistent switching characteristics and gate drive requirements.

Operating Temperature Range: The substitute must support the -55°C to 150°C junction temperature range to ensure operation across the full application environment.

Current Rating: While the substitute may have a higher maximum collector current rating, it must not exceed the thermal and electrical constraints of the application circuit.

The IXGA20N120 meets all substitution criteria through equivalent voltage rating, identical package configuration, matching IGBT type, and compatible temperature range.

Parameter Comparison

Engineering Selection Recommendations

The IXGA20N120 is an active substitute for the obsolete IXSA15N120B. Both components share identical voltage ratings, package configurations, IGBT types, and operating temperature ranges. The IXGA20N120 provides higher current capability (40A versus 30A) and lower on-state voltage (2.5V versus 3.4V), resulting in reduced power dissipation in applications operating at or below the original 30A specification.

Both parts maintain REACH Unaffected status and EAR99 export classification. The IXGA20N120 carries RoHS3 compliance certification, providing additional regulatory alignment for new designs. Moisture sensitivity levels are equivalent at MSL 1 (Unlimited).

The transition from IXSA15N120B to IXGA20N120 does not require PCB layout modifications due to identical Surface Mount TO-263AA packaging. Thermal management designs remain compatible without redesign.

Frequently Asked Questions (FAQ)

Q: Can the IXGA20N120 directly replace the IXSA15N120B in existing designs?

A: Yes. Both components share identical voltage ratings (1200V), package types (TO-263-3 D2PAK Surface Mount), IGBT types (PT), and operating temperature ranges (-55°C to 150°C). No PCB layout or thermal design modifications are required.

Q: What are the key differences between these two parts?

A: The IXGA20N120 provides higher maximum collector current (40A versus 30A) and lower on-state voltage (2.5V versus 3.4V at rated conditions). Switching energy off-time is higher (6.5mJ versus 1.75mJ), and gate charge is slightly increased (63nC versus 57nC). The IXGA20N120 is active production status while the IXSA15N120B is obsolete.

Q: Are there package compatibility concerns?

A: No. Both parts use the TO-263-3 D2PAK Surface Mount package with identical pinout and thermal tab configuration. Existing PCB footprints and assembly processes remain unchanged.

Q: How do the electrical characteristics affect circuit performance?

A: The IXGA20N120 exhibits lower on-state voltage, reducing conduction losses in applications operating at or below 30A. Higher switching energy off-time may require gate drive circuit evaluation for applications with switching frequencies above 50 kHz. Gate charge increase is minimal and typically does not require gate driver redesign.

Q: What compliance certifications apply to both parts?

A: Both components maintain REACH Unaffected status, EAR99 export classification, and MSL 1 (Unlimited) moisture sensitivity levels. The IXGA20N120 additionally carries RoHS3 compliance certification.

Q: Is the IXGA20N120 suitable for applications requiring the original 30A specification?

A: Yes. The IXGA20N120 is rated for 40A maximum collector current, providing margin above the 30A requirement. Applications operating at 30A or below operate within the IXGA20N120 specifications with improved efficiency due to lower on-state voltage.