IRF1405ZSTRRPBF N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The IRF1405ZSTRRPBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 55V drain-to-source voltage and 75A continuous drain current in a D2PAK surface mount package. This device is classified as obsolete, making substitute parts necessary for new designs and ongoing production requirements. The part operates across a temperature range of -55°C to 175°C and delivers 230W maximum power dissipation.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	55	V
Continuous Drain Current (Id) @ 25°C	75	A
On-State Resistance (Rds On) @ 75A, 10V	4.9	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	4	V
Gate Charge (Qg) @ 10V	180	nC
Power Dissipation (Max)	230	W
Operating Temperature Range	-55 to 175	°C
Package Type	D2PAK (TO-263-3)	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitution eligibility for the IRF1405ZSTRRPBF is determined by the following critical parameters:

Primary Matching Criteria:

Drain-to-Source Voltage (Vdss): Must equal or exceed 55V
Continuous Drain Current (Id): Must equal or exceed 75A at 25°C
Package Type: Must be D2PAK (TO-263-3) surface mount
Gate Drive Voltage: Must support 10V drive operation
Operating Temperature Range: Must span -55°C to 175°C

Secondary Compatibility Factors:

On-State Resistance (Rds On): Lower values indicate improved performance
Gate Charge (Qg): Lower values reduce switching losses
Power Dissipation: Higher ratings provide thermal margin
Product Status and Compliance: Active status preferred; automotive qualification (AEC-Q101) and RoHS3 compliance enhance reliability

Substitutes are grouped into two categories: Direct Replacements (matching voltage and current ratings) and Enhanced Alternatives (higher current or voltage ratings with compatible packages).

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On (mOhm)	Qg (nC)	Power Diss. (W)	Product Status	Package
IRF1405ZSTRRPBF	Infineon	55	75	4.9	180	230	Obsolete	D2PAK
BUK764R0-55B,118	Nexperia USA Inc.	55	75	4.0	86	300	Active	D2PAK
BUK7610-55AL,118	Nexperia USA Inc.	55	75	10.0	124	300	Obsolete	D2PAK
STB150NF55T4	STMicroelectronics	55	120	6.0	190	300	Active	D2PAK
BUK765R2-40B,118	NXP USA Inc.	40	75	5.2	52	203	Active	D2PAK
PSMN4R6-60BS,118	Nexperia USA Inc.	60	100	4.4	70.8	211	Active	D2PAK
IXFA220N06T3	IXYS	60	220	4.0	136	440	Last Time Buy	TO-263

Engineering Selection Recommendations

Tier 1 - Direct Replacement (Recommended for New Designs):

BUK764R0-55B,118 is the primary substitute. It matches the 55V/75A rating of the IRF1405ZSTRRPBF while offering superior electrical performance: lower on-state resistance (4.0 mOhm vs. 4.9 mOhm), reduced gate charge (86 nC vs. 180 nC), and higher power dissipation capability (300W vs. 230W). The part is Active status, carries AEC-Q101 automotive qualification, and is RoHS3 compliant. Packaging is identical D2PAK with Tape & Reel availability.

Tier 2 - Enhanced Current Rating:

STB150NF55T4 maintains the 55V voltage rating but provides 120A continuous drain current, exceeding the original 75A specification. This part is Active status with RoHS3 compliance. On-state resistance is 6.0 mOhm at 60A (higher than the original at 75A), and gate charge is 190 nC. Power dissipation reaches 300W. This substitute is suitable for applications requiring additional current margin.

Tier 3 - Voltage Trade-off:

BUK765R2-40B,118 reduces the voltage rating to 40V while maintaining 75A current capability. This part is Active status with AEC-Q101 qualification and RoHS3 compliance. On-state resistance is 5.2 mOhm, gate charge is 52 nC (significantly lower), and power dissipation is 203W. This substitute applies only to applications where 40V Vdss is sufficient.

Tier 4 - Higher Performance Alternative:

PSMN4R6-60BS,118 provides 60V/100A ratings with 4.4 mOhm on-state resistance and 70.8 nC gate charge. Active status with RoHS3 compliance. Power dissipation is 211W. This part suits designs requiring higher voltage and current headroom.

Not Recommended:

BUK7610-55AL,118 and IXFA220N06T3 are not recommended as primary substitutes. BUK7610-55AL is Obsolete status. IXFA220N06T3 is Last Time Buy status and rated for 220A, which exceeds typical application requirements for a 75A part.

Frequently Asked Questions (FAQ)

Q: Can BUK764R0-55B,118 directly replace IRF1405ZSTRRPBF without circuit modifications?

A: Yes. Both parts share identical voltage (55V) and current (75A) ratings, operate across -55°C to 175°C, use D2PAK packaging, and support 10V gate drive. BUK764R0-55B,118 offers improved electrical characteristics (lower Rds On and Qg) with no negative impact on circuit operation.

Q: What is the significance of the lower gate charge in BUK764R0-55B,118?

A: Gate charge (Qg) of 86 nC versus 180 nC in the original part reduces switching losses and allows faster switching transitions. This improves efficiency in switching applications and reduces heat generation, particularly beneficial in high-frequency circuits.

Q: Why is STB150NF55T4 rated for 120A when the original is 75A?

A: STB150NF55T4 is a higher-current variant within the same voltage class. The 120A rating provides additional current capacity for applications requiring margin or future design scaling. The 55V voltage rating remains compatible with the original specification.

Q: Is BUK765R2-40B,118 suitable for all applications using IRF1405ZSTRRPBF?

A: No. BUK765R2-40B,118 has a reduced Vdss rating of 40V compared to the original 55V. This substitute is only applicable to circuits where the maximum drain-to-source voltage does not exceed 40V. Verify circuit voltage requirements before selection.

Q: What does AEC-Q101 qualification mean for automotive applications?

A: AEC-Q101 is an automotive industry standard qualification for discrete semiconductors. Parts meeting this standard have undergone rigorous testing for reliability, temperature cycling, and performance consistency. BUK764R0-55B,118 and STB150NF55T4 carry this qualification, making them suitable for automotive and mission-critical applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All recommended substitute parts (BUK764R0-55B,118, STB150NF55T4, BUK765R2-40B,118, and PSMN4R6-60BS,118) are RoHS3 compliant, meeting environmental and regulatory requirements for lead-free manufacturing.

Q: Can IXFA220N06T3 be used as a substitute despite its higher current rating?

A: IXFA220N06T3 is not recommended as a primary substitute. While it offers superior current capacity (220A), it is Last Time Buy status, indicating discontinued production. Additionally, the significantly higher current rating introduces unnecessary cost and complexity for applications requiring only 75A.

Q: What packaging considerations apply to D2PAK substitutes?

A: All recommended substitutes use D2PAK (TO-263-3) surface mount packaging, identical to the original IRF1405ZSTRRPBF. PCB layouts, thermal management, and mounting procedures remain unchanged. Verify that supplier device package designation matches D2PAK or TO-263-3 before procurement.

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