IRFZ44VSTRR N-Channel 60V 55A MOSFET Equivalent & Substitute Parts

Part Overview

The IRFZ44VSTRR is an N-Channel 60V 55A MOSFET manufactured by Infineon Technologies in D2PAK surface mount packaging. This device is classified as obsolete product status. The HEXFET® series component operates across a temperature range of -55°C to 175°C and delivers 115W maximum power dissipation at case temperature. Due to its obsolete status, equivalent and substitute parts from active manufacturers are necessary for ongoing design support, production continuity, and long-term component availability.

Key Parameters

Parameter	Value	Unit
FET Type	N-Channel	—
Drain to Source Voltage (Vdss)	60	V
Continuous Drain Current (Id) @ 25°C	55	A (Tc)
Rds On (Max) @ Id, Vgs	16.5 mOhm @ 31A, 10V	—
Gate Threshold Voltage Vgs(th) (Max)	4	V @ 250µA
Gate Charge (Qg) (Max) @ Vgs	67	nC @ 10V
Input Capacitance (Ciss) (Max)	1812	pF @ 25V
Power Dissipation (Max)	115	W (Tc)
Operating Temperature Range	-55 to 175	°C (TJ)
Mounting Type	Surface Mount	—
Package / Case	TO-263-3, D2PAK	—
Vgs (Max)	±20	V

Substitute Part Grouping Explanation

Substitution of the IRFZ44VSTRR is determined by strict electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

Drain to Source Voltage (Vdss): Must equal 60V
FET Type: Must be N-Channel
Technology: Must be MOSFET (Metal Oxide)
Gate Threshold Voltage Vgs(th): Must be 4V nominal
Maximum Gate Voltage Vgs (Max): Must be ±20V
Operating Temperature Range: Must support -55°C to 175°C minimum

Mechanical Compatibility Criteria:

Mounting Type: Must be Surface Mount
Package / Case: Must be TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Performance Parameters (Allowable Variation):

Continuous Drain Current (Id): Substitute parts must meet or exceed 55A at Tc
Rds On (Max): Lower values are acceptable (improved performance)
Gate Charge (Qg): Variation permitted within device series characteristics
Input Capacitance (Ciss): Variation permitted within device series characteristics
Power Dissipation (Max): Equal or greater values are acceptable

Substitute parts listed below satisfy all electrical and mechanical compatibility requirements while maintaining functional equivalence to the IRFZ44VSTRR.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On (mOhm)	Vgs(th) (V)	Qg (nC)	Ciss (pF)	Pd Max (W)	Temp Range (°C)	Package	Status
IRFZ44VSTRR	Infineon	60	55 (Tc)	16.5 @ 31A, 10V	4 @ 250µA	67 @ 10V	1812 @ 25V	115 (Tc)	-55 to 175	D2PAK	Obsolete
BUK7613-60E,118	Nexperia	60	58 (Tc)	13 @ 15A, 10V	4 @ 1mA	22.9 @ 10V	1730 @ 25V	96 (Tc)	-55 to 175	D2PAK	Active
FDB13AN06A0	onsemi	60	62 (Tc)	13.5 @ 62A, 10V	4 @ 250µA	29 @ 10V	1350 @ 25V	115 (Tc)	-55 to 175	D2PAK	Active
IRFZ44SPBF	Vishay Siliconix	60	50 (Tc)	28 @ 31A, 10V	4 @ 250µA	67 @ 10V	1900 @ 25V	150 (Tc)	-55 to 175	D2PAK	Active
IRFZ44STRLPBF	Vishay Siliconix	60	50 (Tc)	28 @ 31A, 10V	4 @ 250µA	67 @ 10V	1900 @ 25V	150 (Tc)	-55 to 175	D2PAK	Active
IRFZ48SPBF	Vishay Siliconix	60	50 (Tc)	18 @ 43A, 10V	4 @ 250µA	110 @ 10V	2400 @ 25V	190 (Tc)	-55 to 175	D2PAK	Active
PSMN015-60BS,118	Nexperia	60	50 (Tc)	14.8 @ 15A, 10V	4 @ 1mA	20.9 @ 10V	1220 @ 30V	86 (Tc)	-55 to 175	D2PAK	Active
RSJ400N06FRATL	Rohm Semiconductor	60	40 (Ta)	16 @ 40A, 10V	3 @ 1mA	52 @ 10V	2400 @ 10V	50 (Ta)	-55 to 150	D2PAK	Active
STB55NF06LT4	STMicroelectronics	60	55 (Tc)	18 @ 27.5A, 10V	4.7 @ 250µA	37 @ 4.5V	1700 @ 25V	95 (Tc)	-55 to 175	D2PAK	Active
STB55NF06T4	STMicroelectronics	60	50 (Tc)	18 @ 27.5A, 10V	4 @ 250µA	60 @ 10V	1300 @ 25V	110 (Tc)	-55 to 175	D2PAK	Active
STB60NF06T4	STMicroelectronics	60	60 (Tc)	16 @ 30A, 10V	4 @ 250µA	66 @ 10V	1810 @ 25V	110 (Tc)	-65 to 175	D2PAK	Active

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

STB60NF06T4 (STMicroelectronics) is the closest functional equivalent. This part matches the IRFZ44VSTRR in drain current rating (60A Tc), Vdss (60V), gate threshold voltage (4V), and operating temperature range (-65°C to 175°C). The STB60NF06T4 is active product status with RoHS3 compliance and AEC-Q101 automotive qualification. Rds On is 16 mOhm at 30A, 10V, providing superior on-resistance performance. Power dissipation is 110W (Tc), meeting the 115W specification.

STB55NF06LT4 (STMicroelectronics) provides exact current rating match at 55A (Tc) and identical Vdss of 60V. This part is active status with RoHS3 compliance. Operating temperature range is -55°C to 175°C. Rds On is 18 mOhm at 27.5A, 10V. Power dissipation is 95W (Tc), slightly below the original 115W specification.

FDB13AN06A0 (onsemi) delivers 62A continuous drain current, exceeding the 55A requirement. Vdss matches at 60V. This part is active status with RoHS3 compliance. Rds On is 13.5 mOhm at 62A, 10V, providing improved on-resistance. Power dissipation is 115W (Tc), matching the original specification exactly. Operating temperature range is -55°C to 175°C.

Secondary Substitutes (Acceptable Performance Variation):

BUK7613-60E,118 (Nexperia) provides 58A continuous drain current with 60V Vdss. This part is active status with RoHS3 compliance and AEC-Q101 automotive qualification. Rds On is 13 mOhm at 15A, 10V. Power dissipation is 96W (Tc). Operating temperature range is -55°C to 175°C.

IRFZ48SPBF and IRFZ44STRLPBF (Vishay Siliconix) both provide 50A continuous drain current at 60V Vdss. These parts are active status with RoHS3 compliance. IRFZ48SPBF offers superior Rds On at 18 mOhm and higher power dissipation at 190W (Tc). Both maintain -55°C to 175°C operating range.

PSMN015-60BS,118 (Nexperia) provides 50A continuous drain current at 60V Vdss. This part is active status with RoHS3 compliance. Rds On is 14.8 mOhm at 15A, 10V. Power dissipation is 86W (Tc). Operating temperature range is -55°C to 175°C.

Compliance and Certification Status:

All recommended substitute parts are RoHS3 compliant and REACH unaffected. BUK7613-60E,118 and STB60NF06T4 carry AEC-Q101 automotive qualification, suitable for automotive applications. All parts maintain the required D2PAK surface mount package and TO-263-3 case format.

Frequently Asked Questions (FAQ)

Q: Can IRFZ44SPBF replace IRFZ44VSTRR directly?

A: IRFZ44SPBF is electrically compatible but with performance differences. Both are 60V N-Channel MOSFETs in D2PAK packaging with 4V gate threshold voltage. IRFZ44SPBF provides 50A continuous drain current versus the original 55A, and Rds On is 28 mOhm versus 16.5 mOhm. Power dissipation is 150W (Tc) versus 115W (Tc). IRFZ44SPBF is active product status, making it suitable for new designs requiring the IRFZ44 base series.

Q: What is the difference between STB55NF06LT4 and STB55NF06T4?

A: Both parts are STMicroelectronics STripFET™ II series 60V MOSFETs in D2PAK packaging. STB55NF06LT4 provides 55A continuous drain current with 95W power dissipation. STB55NF06T4 provides 50A continuous drain current with 110W power dissipation. Both maintain identical Vdss (60V), gate threshold voltage (4V), and operating temperature range (-55°C to 175°C). Selection depends on required current rating and power dissipation budget.

Q: Is FDB13AN06A0 suitable for high-current applications?

A: FDB13AN06A0 is rated for 62A continuous drain current at case temperature, exceeding the original IRFZ44VSTRR specification of 55A. This part is onsemi PowerTrench® series with 13.5 mOhm Rds On at 62A, 10V, providing superior on-resistance performance. Power dissipation is 115W (Tc), matching the original specification. Operating temperature range is -55°C to 175°C. This part is suitable for applications requiring higher current capacity.

Q: What is the advantage of BUK7613-60E,118 over other substitutes?

A: BUK7613-60E,118 is Nexperia TrenchMOS™ series with 58A continuous drain current at 60V Vdss. This part features 13 mOhm Rds On at 15A, 10V, providing low on-resistance. Gate charge is 22.9 nC at 10V, significantly lower than the original 67 nC, resulting in faster switching characteristics. This part carries AEC-Q101 automotive qualification and is RoHS3 compliant. It is suitable for automotive and high-efficiency switching applications.

Q: Can RSJ400N06FRATL be used as a substitute?

A: RSJ400N06FRATL is Rohm Semiconductor 60V N-Channel MOSFET in D2PAK packaging with 40A continuous drain current. This part does not meet the minimum 55A current requirement of the IRFZ44VSTRR. Additionally, maximum operating temperature is 150°C versus the original 175°C. RSJ400N06FRATL is not recommended as a direct substitute for applications requiring 55A or higher current ratings.

Q: What packaging options are available for substitutes?

A: All substitute parts listed maintain the D2PAK (TO-263-3) surface mount package format, ensuring mechanical compatibility with the original IRFZ44VSTRR. Packaging variations include Tape & Reel (TR), Cut Tape (CT) & Digi-Reel®, and Tube formats. These variations affect supply chain and handling but do not alter electrical or mechanical compatibility. Verify packaging format availability with component suppliers for production requirements.

Q: Are there temperature range differences between substitutes?

A: Most substitute parts maintain the -55°C to 175°C operating temperature range of the original IRFZ44VSTRR. STB60NF06T4 extends the lower temperature limit to -65°C. RSJ400N06FRATL limits the upper temperature to 150°C. For applications requiring the full -55°C to 175°C range, select from STB55NF06LT4, STB55NF06T4, STB60NF06T4, BUK7613-60E,118, FDB13AN06A0, IRFZ44SPBF, IRFZ44STRLPBF, IRFZ48SPBF, or PSMN015-60BS,118.

Q: What is the significance of Rds On variation among substitutes?

A: Rds On (on-resistance) directly affects power dissipation and thermal performance. Lower Rds On values reduce conduction losses. FDB13AN06A0 provides 13.5 mOhm, BUK7613-60E,118 provides 13 mOhm, and PSMN015-60BS,118 provides 14.8 mOhm, all lower than the original 16.5 mOhm. IRFZ44SPBF and IRFZ44STRLPBF provide 28 mOhm, higher than the original. IRFZ48SPBF provides 18 mOhm. Selection depends on thermal budget and efficiency requirements.

Q: Which substitutes have automotive qualification?

A: BUK7613-60E,118 and STB60NF06T4 carry AEC-Q101 automotive qualification. These parts are suitable for automotive applications requiring industry-standard reliability and qualification testing. Other substitutes are suitable for industrial and consumer applications but lack formal automotive qualification.

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