IRL40B212 Equivalent & Substitute Parts

Part Overview

The IRL40B212 is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 40V drain-to-source voltage with 195A continuous drain current at 25°C. This device is packaged in TO-220AB through-hole configuration and is designed for high-current switching applications. The part is classified as Obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement planning. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while supporting the same through-hole mounting interface.

Substiute Parts

IRL40B212

Infineon TechnologiesIn Stock: 10223IRL40B212 Datasheet

Current PartRFQ

IXTP300N04T2

IXYSIn Stock: 4166IXTP300N04T2 Datasheet

MFR RecommendedRFQ

IXTP340N04T4

IXYSIn Stock: 766IXTP340N04T4 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IRL40B212 is determined by the following critical parameters:

Mandatory Matching Criteria:

• Drain to Source Voltage (Vdss): 40V minimum
• FET Type: N-Channel
• Technology: MOSFET (Metal Oxide)
• Mounting Type: Through Hole
• Package: TO-220-3 compatible

Performance Compatibility Criteria:

• Continuous Drain Current (Id): Equal to or greater than 195A
• On-State Resistance (Rds On): Equal to or lower than 1.9 mOhm at rated conditions
• Operating Temperature Range: -55°C to 175°C minimum
• Power Dissipation: Equal to or greater than 231W

The identified substitute parts IXTP300N04T2 and IXTP340N04T4 meet all mandatory criteria and exceed performance specifications in drain current and power dissipation ratings, providing enhanced capability for the same voltage class and package footprint.

Parameter Comparison

Engineering Selection Recommendations

IXTP300N04T2 Selection Criteria: This part is recommended for applications requiring direct functional replacement with enhanced current capacity. The IXTP300N04T2 maintains 40V Vdss rating and TO-220-3 package compatibility while providing 300A continuous drain current, exceeding the IRL40B212 specification by 105A. Product status is Active, ensuring long-term availability and supply chain stability. RoHS3 compliance and REACH unaffected status match the original part's regulatory standing. Gate charge specification (145 nC @ 10V) is marginally higher than the main part, requiring verification of gate driver capability in existing designs.

IXTP340N04T4 Selection Criteria: This part provides maximum performance upgrade within the 40V class, delivering 340A continuous drain current and matching the IRL40B212's on-state resistance specification (1.9 mOhm @ 100A, 10V). Power dissipation capability reaches 480W, double the original part rating. Product status is Last Time Buy, indicating limited future availability; procurement should prioritize this part if maximum performance margin is required. Gate charge is significantly higher (256 nC @ 10V), requiring careful gate driver assessment. RoHS3 compliance and REACH unaffected status are maintained.

Regulatory and Compliance Alignment: Both substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the original IRL40B212 certifications. ECCN and HTSUS classifications are identical across all three parts, supporting seamless supply chain integration.

Frequently Asked Questions (FAQ)

Q: Can IXTP300N04T2 or IXTP340N04T4 be used as direct pin-for-pin replacements for IRL40B212?

A: Yes. Both substitute parts share identical TO-220-3 package pinout and through-hole mounting configuration. No PCB layout modifications are required for mechanical installation.

Q: What are the key electrical differences between the main part and substitutes?

A: The primary differences are continuous drain current (195A vs. 300A/340A) and gate charge specifications. IXTP300N04T2 requires 145 nC gate charge versus 137 nC for IRL40B212. IXTP340N04T4 requires 256 nC, which is substantially higher. Gate driver circuits must be verified to supply adequate charge within acceptable switching time parameters.

Q: Why does IXTP340N04T4 have higher gate charge than IXTP300N04T2?

A: Gate charge correlates with input capacitance and die size. IXTP340N04T4 features larger input capacitance (13000 pF vs. 10700 pF), resulting in higher gate charge. This reflects the higher current rating and performance capability of the device.

Q: Are there thermal management differences between these parts?

A: All three parts operate across -55°C to 175°C junction temperature range. IXTP300N04T2 and IXTP340N04T4 feature 480W power dissipation capability versus 231W for IRL40B212, allowing operation at higher power levels or reduced thermal stress at equivalent power levels.

Q: What is the significance of IXTP340N04T4 being "Last Time Buy" status?

A: Last Time Buy status indicates the manufacturer has announced end-of-life for this part. Existing inventory will be sold until depletion, after which the part becomes unavailable. For new designs or long-term production, IXTP300N04T2 (Active status) is the preferred substitute.

Q: Do the substitute parts require different gate driver specifications?

A: Gate threshold voltage differs between parts. IRL40B212 specifies 2.4V @ 150µA, while both IXYS parts specify 4.0V @ 250µA. Existing gate driver circuits must be verified to reliably drive the higher threshold voltage. Gate charge differences also affect switching speed and driver current requirements.

Q: Are there any compliance or regulatory restrictions on using these substitutes?

A: No. All three parts maintain identical ROHS3 compliance, REACH unaffected status, ECCN (EAR99), and HTSUS (8541.29.0095) classifications. Regulatory requirements are fully aligned.

Q: What is the moisture sensitivity level for these parts?

A: All three parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.