FS75R12KT4B11BOSA1 IGBT Module: Equivalent & Substitute Parts

Part Overview

The FS75R12KT4B11BOSA1 is a Trench Field Stop IGBT Module manufactured by Infineon Technologies, configured as a three-phase inverter with 1200 V collector-emitter breakdown voltage and 75 A maximum collector current. This module is rated for 385 W maximum power dissipation and features chassis mount installation with integrated NTC thermistor functionality.

The FS75R12KT4B11BOSA1 is discontinued at DiGi Electronics. Equivalent substitute parts are available from Infineon Technologies' active product lines, maintaining identical electrical and mechanical specifications to support continued system design and procurement.

Substiute Parts

FS75R12KT4B11BOSA1

Infineon TechnologiesIn Stock: 1088FS75R12KT4B11BOSA1 Datasheet

Current PartRFQ

FP75R12KT4BOSA1

Infineon TechnologiesIn Stock: 776FP75R12KT4BOSA1 Datasheet

Parametric EquivalentRFQ

FP75R12KT4B15BOSA1

Infineon TechnologiesIn Stock: 762FP75R12KT4B15BOSA1 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FS75R12KT4B11BOSA1 is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

• Voltage - Collector Emitter Breakdown (Max): 1200 V
• Current - Collector (Ic) (Max): 75 A
• Power - Max: 385 W
• Current - Collector Cutoff (Max): 1 mA
• Input Capacitance (Cies) @ Vce: 4.3 nF @ 25 V
• Operating Temperature Range: -40°C to 150°C

Mechanical & Functional Parameters (Must Match):

• IGBT Type: Trench Field Stop
• Configuration: Three Phase Inverter
• Mounting Type: Chassis Mount
• Package / Case: Module
• NTC Thermistor: Yes
• Input: Standard

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected
• ECCN: EAR99
• HTSUS: 8541.29.0095

The substitute parts FP75R12KT4BOSA1 and FP75R12KT4B15BOSA1 meet all substitution criteria. Variations in series designation (EconoPACK™ 2 versus EconoPIM™ 3), packaging format (Tray versus Module designation), product status (Discontinued versus Active), and Vce(on) tolerance ranges do not affect functional equivalence within the specified electrical and mechanical parameters.

Parameter Comparison

Engineering Selection Recommendations

Both FP75R12KT4BOSA1 and FP75R12KT4B15BOSA1 are direct functional equivalents to the FS75R12KT4B11BOSA1 for applications requiring a 1200 V, 75 A three-phase inverter IGBT module with 385 W power rating.

FP75R12KT4B15BOSA1 is the preferred substitute. This part maintains identical Vce(on) specification (2.15 V @ 15V, 75A) to the original FS75R12KT4B11BOSA1, ensuring equivalent thermal and switching performance characteristics. The part is currently active in Infineon's product portfolio and available in production quantities.

FP75R12KT4BOSA1 is an alternative substitute with equivalent electrical and mechanical specifications. This part features a Vce(on) maximum of 2.25 V @ 15V, 75A, representing a 0.10 V increase from the original specification. This variance remains within acceptable tolerance for three-phase inverter applications and does not affect functional compatibility. The part is currently active and available in production quantities.

Both substitute parts comply with ROHS3 and REACH requirements, matching the original part's regulatory status. Selection between the two substitutes should be based on application thermal budget and switching loss requirements.

Frequently Asked Questions (FAQ)

Q: Can FP75R12KT4BOSA1 and FP75R12KT4B15BOSA1 be used interchangeably with FS75R12KT4B11BOSA1?

A: Yes. Both parts meet all electrical, mechanical, and functional specifications required for direct substitution. The primary difference is Vce(on) specification: FP75R12KT4B15BOSA1 matches the original 2.15 V specification, while FP75R12KT4BOSA1 specifies 2.25 V maximum. Both values are within acceptable operating parameters for three-phase inverter applications.

Q: What is the difference between EconoPACK™ 2 and EconoPIM™ 3 series modules?

A: Series designation reflects Infineon's product line evolution. Both series employ identical Trench Field Stop IGBT technology and three-phase inverter configuration. The substitute parts from EconoPIM™ 3 series maintain full electrical and mechanical compatibility with the original EconoPACK™ 2 module.

Q: Does packaging format (Tray versus Module designation) affect compatibility?

A: No. Packaging format refers to supply and handling configuration only. The electrical and mechanical interface specifications remain identical across all three parts.

Q: Why is FS75R12KT4B11BOSA1 discontinued?

A: Product discontinuation reflects Infineon's portfolio management. The substitute parts FP75R12KT4BOSA1 and FP75R12KT4B15BOSA1 provide equivalent functionality and are maintained as active products.

Q: Are there thermal performance differences between the substitute parts?

A: Thermal performance is determined by power dissipation and Vce(on) characteristics. FP75R12KT4B15BOSA1 matches the original Vce(on) specification (2.15 V), providing identical thermal behavior. FP75R12KT4BOSA1 specifies 2.25 V maximum Vce(on), resulting in marginally higher conduction losses under identical operating conditions.

Q: Do all three parts require identical PCB layout and thermal management?

A: Yes. All three parts share identical mounting type (Chassis Mount), package configuration (Module), and operating temperature range (-40°C to 150°C). PCB layout, heatsink design, and thermal management strategies remain unchanged.

Q: What compliance certifications apply to the substitute parts?

A: Both substitute parts maintain ROHS3 compliance and REACH Unaffected status, matching the original part's regulatory standing. ECCN and HTSUS classifications are identical across all three parts.