CSD18510KTT N-Channel 40V 274A MOSFET Equivalent & Substitute Parts

Part Overview

The CSD18510KTT is an N-Channel MOSFET manufactured by Texas Instruments, designed for high-current switching applications. This device operates at 40V drain-to-source voltage with a continuous drain current rating of 274A at 25°C case temperature. The part is housed in a TO-263 (DDPAK-3) surface mount package and is classified as Active product status. Finding equivalent and substitute parts becomes necessary when the primary device is unavailable, when inventory constraints exist, or when design flexibility is required across multiple suppliers while maintaining electrical and mechanical compatibility.

Substiute Parts

CSD18510KTT

Texas InstrumentsIn Stock: 2132CSD18510KTT Datasheet

Current PartRFQ

IPB120N04S401ATMA1

Infineon TechnologiesIn Stock: 16836IPB120N04S401ATMA1 Datasheet

MFR RecommendedRFQ

IXTA340N04T4

IXYSIn Stock: 1137IXTA340N04T4 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CSD18510KTT is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Drain-to-Source Voltage (Vdss): Must equal 40V
• Package Type: Must be TO-263-3 or equivalent D2PAK footprint
• Mounting Type: Must be Surface Mount
• FET Type: Must be N-Channel
• Technology: Must be MOSFET (Metal Oxide)
• Operating Temperature Range: Must support -55°C to 175°C minimum

Performance Parameters (Allowable Variation):

• Continuous Drain Current (Id): Substitute must meet or exceed 274A at 25°C case temperature
• On-State Resistance (Rds On): Lower or equal values are acceptable
• Gate Charge (Qg): Values within the range of substitute devices are acceptable
• Power Dissipation: Must support thermal requirements of the application

Compliance Parameters:

• RoHS3 Compliance: Required
• ECCN Classification: EAR99
• HTSUS Code: 8541.29.0095

The substitute parts listed below satisfy all critical matching parameters and maintain electrical compatibility within the specified operating conditions.

Parameter Comparison

Engineering Selection Recommendations

CSD18510KTT (Primary Device) The CSD18510KTT remains the preferred choice for new designs and ongoing production. This device carries Active product status from Texas Instruments, ensuring long-term availability and supply chain stability. The part is RoHS3 compliant and maintains full regulatory compliance. Current inventory of 2,096 pieces supports immediate procurement requirements.

IPB120N04S401ATMA1 (Infineon Technologies) This substitute is suitable for applications where the continuous drain current requirement does not exceed 120A. The device offers superior on-state resistance (1.5 mOhm versus 1.7 mOhm) and lower gate charge (176 nC), resulting in reduced switching losses. The part maintains Active product status with unlimited moisture sensitivity level (MSL 1), indicating superior shelf life. Inventory availability of 16,801 pieces provides excellent supply security. This substitute is recommended when thermal management and switching efficiency are prioritized over maximum current capacity.

IXTA340N04T4 (IXYS) This substitute provides the highest continuous drain current rating (340A) and maximum power dissipation (480W), making it suitable for applications requiring higher current capacity than the primary device. However, this part carries Last Time Buy product status, indicating discontinued production and limited future availability. Gate charge is significantly higher (256 nC), resulting in increased switching losses. This substitute is recommended only for applications where the higher current rating is essential and where long-term supply is not a critical factor. Inventory of 1,046 pieces represents limited stock.

Compliance and Regulatory Considerations All three devices are RoHS3 compliant and classified under ECCN EAR99 with HTSUS code 8541.29.0095. The CSD18510KTT and IPB120N04S401ATMA1 maintain REACH Unaffected or REACH Affected status with full regulatory support. Selection should prioritize Active product status devices for new designs to ensure long-term supply chain viability.

Frequently Asked Questions (FAQ)

Q1: Can the IPB120N04S401ATMA1 directly replace the CSD18510KTT in all applications?

The IPB120N04S401ATMA1 is electrically compatible with the CSD18510KTT in terms of voltage rating (40V), package type (TO-263-3/D2PAK), and operating temperature range (-55 to 175°C). However, the continuous drain current rating is significantly lower (120A versus 274A). Direct substitution is only valid for applications where the maximum required drain current does not exceed 120A at 25°C case temperature. Applications requiring the full 274A capability must use the CSD18510KTT or IXTA340N04T4.

Q2: What are the package compatibility considerations between these three devices?

All three devices use compatible TO-263-3 surface mount packages (DDPAK or D2PAK variants). The CSD18510KTT uses TO-263AB, the IPB120N04S401ATMA1 uses PG-TO263-3, and the IXTA340N04T4 uses TO-263AA. These packages share identical PCB footprints and lead configurations, allowing direct physical substitution without layout modifications. Thermal performance may vary due to different die sizes and internal construction, but mechanical compatibility is confirmed.

Q3: Why is the IXTA340N04T4 marked as Last Time Buy?

Last Time Buy status indicates that IXYS has discontinued production of this device. While current inventory of 1,046 pieces is available, future procurement will not be possible once existing stock is depleted. This status makes the IXTA340N04T4 unsuitable for long-term production programs or designs requiring multi-year supply commitments. New designs should prioritize the CSD18510KTT (Active status) or IPB120N04S401ATMA1 (Active status) to ensure supply chain continuity.

Q4: How do gate charge differences affect circuit performance?

Gate charge (Qg) determines the energy required to switch the MOSFET on and off. The CSD18510KTT has the lowest gate charge (153 nC), followed by IPB120N04S401ATMA1 (176 nC) and IXTA340N04T4 (256 nC). Higher gate charge increases switching losses and requires higher gate drive current. In high-frequency switching applications, the lower gate charge of the CSD18510KTT or IPB120N04S401ATMA1 results in improved efficiency. The IXTA340N04T4's higher gate charge may require gate driver circuit adjustments to maintain switching speed.

Q5: What is the significance of on-state resistance (Rds On) in substitution decisions?

On-state resistance directly affects conduction losses and heat generation. Lower Rds On values reduce power dissipation during the on-state. The IPB120N04S401ATMA1 offers the lowest Rds On (1.5 mOhm), while both the CSD18510KTT and IXTA340N04T4 are rated at 1.7 mOhm. In high-current applications, even small differences in Rds On can significantly impact thermal performance. The IPB120N04S401ATMA1 is preferred for efficiency-critical designs, while the CSD18510KTT and IXTA340N04T4 provide equivalent performance in this parameter.

Q6: Are there any moisture sensitivity or shelf-life considerations?

The CSD18510KTT has MSL 2 rating with 1-year shelf life, while both IPB120N04S401ATMA1 and IXTA340N04T4 have MSL 1 rating with unlimited shelf life. MSL 1 devices are more robust to moisture exposure and do not require time-sensitive handling after opening. For applications with extended storage periods or high-humidity environments, the IPB120N04S401ATMA1 or IXTA340N04T4 offer superior reliability characteristics.

Q7: Which substitute is recommended for new product designs?

For new designs, the IPB120N04S401ATMA1 (Infineon Technologies) is recommended as the primary substitute when current requirements do not exceed 120A. This device maintains Active product status, offers superior on-state resistance and gate charge characteristics, and provides unlimited shelf life (MSL 1). The CSD18510KTT should remain the first choice for applications requiring the full 274A capability. The IXTA340N04T4 should be avoided in new designs due to Last Time Buy status.