IRGP4266D-EPBF IGBT Equivalent & Substitute Parts

Part Overview

The IRGP4266D-EPBF is a 650V, 140A IGBT manufactured by Infineon Technologies in TO-247AD package configuration. This component is classified as obsolete, necessitating identification of functionally equivalent substitute parts for ongoing system support and new design considerations. The part operates across an industrial temperature range of -40°C to 175°C and delivers 455W maximum power dissipation, making it suitable for high-power switching applications including industrial motor drives, power supplies, and renewable energy converters.

Due to its obsolete status, equivalent substitute parts must be evaluated based on electrical performance parameters, mechanical compatibility, and thermal characteristics to ensure reliable system operation.

Substiute Parts

IRGP4266D-EPBF

Infineon TechnologiesIn Stock: 860IRGP4266D-EPBF Datasheet

Current PartRFQ

IKW75N60TFKSA1

Infineon TechnologiesIn Stock: 4913IKW75N60TFKSA1 Datasheet

MFR RecommendedRFQ

FGH75T65UPD

onsemiIn Stock: 5599FGH75T65UPD Datasheet

MFR RecommendedRFQ

FGH75T65UPD-F085

onsemiIn Stock: 6037FGH75T65UPD-F085 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IRGP4266D-EPBF is determined by the following critical electrical and mechanical parameters:

Voltage Rating: Substitute parts must maintain a minimum collector-emitter breakdown voltage of 650V to ensure safe operation within the original design envelope.

Current Rating: The maximum collector current (Ic) must be sufficient to handle the 140A requirement. Parts with equal or greater current capacity are acceptable.

Package Compatibility: All substitute parts must use the TO-247-3 through-hole package to ensure mechanical and thermal interface compatibility with existing PCB layouts and heatsink mounting.

Thermal Performance: Operating temperature range must encompass the original -40°C to 175°C specification to maintain reliability across the full operating envelope.

Switching Characteristics: Gate charge, switching delay times, and reverse recovery time influence circuit performance and EMI behavior. Substitute parts with comparable or improved switching characteristics maintain system performance.

The following parts meet these substitution criteria:

1. IKW75N60TFKSA1 (Infineon Technologies) - 600V, 80A, Active status
2. FGH75T65UPD (onsemi) - 650V, 150A, Not For New Designs status
3. FGH75T65UPD-F085 (onsemi) - 650V, 150A, Automotive qualified, Not For New Designs status

Parameter Comparison

Engineering Selection Recommendations

For Active Production Systems (Recommended Primary Choice):

The IKW75N60TFKSA1 is the preferred substitute for ongoing production support. This part maintains active product status from Infineon Technologies and carries ROHS3 compliance certification. While the voltage rating is reduced to 600V and current capacity to 80A, these parameters remain within acceptable margins for most industrial applications operating at nominal 400V bus voltage. The lower gate charge (470nC) and improved reverse recovery time (121ns) provide enhanced switching performance. This part is immediately available with 4,900 units in stock.

For Existing System Maintenance (Alternative Choice):

The FGH75T65UPD or FGH75T65UPD-F085 from onsemi provide voltage and current ratings that closely match the original IRGP4266D-EPBF specification (650V, 150A). Both parts deliver superior switching characteristics with reduced switching energy and faster turn-off times. The FGH75T65UPD-F085 variant includes AEC-Q101 automotive qualification, suitable for applications requiring automotive-grade reliability. Both parts carry ROHS3 compliance. However, both are classified as "Not For New Designs," limiting their use to legacy system support.

Compliance Considerations:

All substitute parts maintain REACH compliance and EAR99 export classification consistent with the original component. ROHS3 compliance is confirmed for all substitute options, supporting environmental regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the IKW75N60TFKSA1 directly replace the IRGP4266D-EPBF in all applications?

A: The IKW75N60TFKSA1 operates at 600V maximum voltage versus the original 650V specification. This 50V reduction is acceptable for systems designed around 400V nominal bus voltage with standard safety margins. However, applications operating near the 650V maximum rating require verification that 600V operation remains within system design limits. The 80A current rating is lower than the original 140A; applications requiring sustained currents above 80A must use alternative substitutes.

Q: What are the thermal implications of substituting these parts?

A: The IKW75N60TFKSA1 delivers 428W maximum power dissipation versus 455W for the original part, representing a 6% reduction. The FGH75T65UPD and FGH75T65UPD-F085 deliver 375W, a 18% reduction. Existing heatsink designs sized for the original 455W dissipation remain valid for all substitutes. Applications operating at maximum power levels may experience slightly lower junction temperatures with substitute parts, improving reliability margins.

Q: Are there package compatibility concerns?

A: All substitute parts use the TO-247-3 through-hole package, identical to the original IRGP4266D-EPBF. PCB footprints, heatsink mounting interfaces, and thermal coupling remain unchanged. No mechanical redesign is required.

Q: How do switching characteristics affect circuit performance?

A: The IKW75N60TFKSA1 exhibits higher gate charge (470nC versus 210nC) and longer turn-off delay (330ns versus 200ns), requiring gate driver circuits with adequate current sourcing capability. The FGH75T65UPD variants show improved switching performance with faster turn-off times (166ns) and lower reverse recovery time (85ns), potentially reducing EMI and improving efficiency in high-frequency applications.

Q: What is the significance of product status classifications?

A: The IKW75N60TFKSA1 carries "Active" status, indicating ongoing manufacturing support and long-term availability. The FGH75T65UPD variants are classified "Not For New Designs," indicating onsemi is transitioning these parts to end-of-life. For new system development, the IKW75N60TFKSA1 is the recommended choice. For legacy system maintenance, FGH75T65UPD variants remain available but should not be selected for new designs.

Q: Does the automotive qualification of FGH75T65UPD-F085 provide additional benefits?

A: AEC-Q101 qualification indicates the FGH75T65UPD-F085 meets automotive industry reliability and testing standards. This qualification is relevant only for applications requiring automotive-grade components. Industrial and commercial applications do not require this certification and may select either FGH75T65UPD variant based on availability and cost considerations.