IXTY64N055T N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The IXTY64N055T is an N-Channel MOSFET manufactured by IXYS in the TrenchMV™ series, rated for 55V drain-to-source voltage and 64A continuous drain current at 25°C. The device is housed in a TO-252AA (DPAK) surface mount package with a maximum power dissipation of 130W at the case temperature. This part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support and production continuity. Substitute parts must maintain compatibility across critical electrical parameters including voltage rating, current capacity, on-resistance characteristics, and thermal performance while accommodating the same or compatible package footprints.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	55	V
Continuous Drain Current (Id) @ 25°C	64	A
On-Resistance (Rds On Max) @ 10V Vgs	13	mOhm
Gate Threshold Voltage (Vgs(th)) @ 25µA	4	V
Gate Charge (Qg) @ 10V	37	nC
Input Capacitance (Ciss) @ 25V	1420	pF
Power Dissipation (Max)	130	W
Operating Temperature Range	-55 to 175	°C
Package Type	TO-252-3 DPAK	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitution of the IXTY64N055T is determined by the following critical parameters:

Voltage Rating Compatibility: All substitute parts must maintain a minimum Vdss rating of 55V. Parts rated at 60V or higher are acceptable as they provide equivalent or superior voltage withstand capability.

Current Capacity: Substitute parts must support a continuous drain current (Id) at or above 64A at 25°C. Parts with higher current ratings (75A, 80A, 90A) are acceptable as they provide design margin and thermal headroom.

On-Resistance (Rds On): The maximum on-resistance specification at 10V gate drive must not exceed 16 mOhm to maintain thermal performance and power dissipation characteristics within acceptable limits. Lower on-resistance values are preferred.

Package Compatibility: All substitute parts must use the TO-252-3 DPAK surface mount package (also designated SC-63) to ensure PCB footprint compatibility without layout redesign.

Operating Temperature Range: Substitute parts must support the full operating temperature range of -55°C to 175°C (or higher).

Compliance and Status: Active product status is preferred for long-term availability. RoHS3 compliance and MSL Level 1 are maintained across all qualified substitutes.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On Max @ 10V (mOhm)	Qg @ 10V (nC)	Ciss @ 25V (pF)	Power Diss. (W)	Status	Package
IXTY64N055T	IXYS	55	64	13	37	1420	130	Obsolete	TO-252AA
IXTY90N055T2	IXYS	55	90	8.4	42	2770	150	Active	TO-252AA
BUK7212-55B,118	Nexperia USA Inc.	55	75	12	35	2453	167	Obsolete	DPAK
DMNH6012LK3-13	Diodes Incorporated	60	60	12	35.2	1926	2	Active	TO-252-3
DMNH6012LK3Q-13	Diodes Incorporated	60	80	12	35.2	1926	2	Active	TO-252-3
IPD30N06S215ATMA2	Infineon Technologies	55	30	14.7	110	1485	136	Active	PG-TO252-3-11
IRFR2307ZTRLPBF	Infineon Technologies	75	42	16	75	2190	110	Active	TO-252AA
IRFR2405TRLPBF	Infineon Technologies	55	56	16	110	2430	110	Active	TO-252AA
IRFR2405TRPBF	Infineon Technologies	55	56	16	110	2430	110	Active	TO-252AA
IRFR2905ZTRPBF	Infineon Technologies	55	42	14.5	44	1380	110	Active	TO-252AA
IRFR3806TRPBF	Infineon Technologies	60	43	15.8	30	1150	71	Active	TO-252AA

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

The IXTY90N055T2 from IXYS is the preferred direct substitute. It maintains the same 55V voltage rating and TO-252AA package, offers superior current capacity (90A versus 64A), improved on-resistance (8.4 mOhm versus 13 mOhm), and is classified as an active product with current manufacturing support. The TrenchT2™ series technology provides enhanced performance characteristics.

The IRFR2405TRLPBF and IRFR2405TRPBF from Infineon Technologies are functionally equivalent alternatives. Both maintain the 55V rating, TO-252AA package compatibility, and support 56A continuous current. These devices are active products in the HEXFET® series with established supply chains. The higher on-resistance (16 mOhm) and gate charge (110 nC) require thermal analysis in power-sensitive applications.

Secondary Substitutes (Conditional Compatibility):

The DMNH6012LK3Q-13 from Diodes Incorporated provides 80A current capacity at 60V rating with 12 mOhm on-resistance and AEC-Q101 automotive qualification. The 60V rating provides voltage margin above the 55V requirement. The TO-252-3 package is mechanically and electrically compatible with the original TO-252AA footprint.

The BUK7212-55B,118 from Nexperia USA Inc. maintains 55V rating and 75A current capacity with 12 mOhm on-resistance. AEC-Q101 automotive qualification is included. Product status is obsolete, limiting long-term availability.

Limited Substitutes (Current Derating Required):

The IPD30N06S215ATMA2 from Infineon Technologies is rated for only 30A continuous current, representing a 53% reduction from the IXTY64N055T specification. This device is suitable only for applications where the actual operating current does not exceed 30A. The 55V rating and TO-252-3 package are compatible.

The IRFR2905ZTRPBF from Infineon Technologies is rated for 42A continuous current, representing a 34% reduction from the IXTY64N055T specification. This device is suitable for applications where the actual operating current does not exceed 42A. The 55V rating and TO-252AA package are compatible.

The IRFR2307ZTRLPBF from Infineon Technologies is rated for 42A continuous current at a higher 75V voltage rating. This device is suitable for applications where the actual operating current does not exceed 42A and where the higher voltage rating is acceptable.

The IRFR3806TRPBF from Infineon Technologies is rated for 43A continuous current at 60V. This device is suitable for applications where the actual operating current does not exceed 43A and where the 60V rating provides acceptable voltage margin.

Compliance Considerations:

All recommended substitutes maintain RoHS3 compliance and MSL Level 1 moisture sensitivity rating. Devices with AEC-Q101 automotive qualification (BUK7212-55B,118, DMNH6012LK3-13, DMNH6012LK3Q-13) are suitable for automotive and industrial applications requiring enhanced reliability documentation.

Frequently Asked Questions (FAQ)

Q: Can the IXTY90N055T2 be used as a direct replacement for the IXTY64N055T?

A: Yes. The IXTY90N055T2 maintains the same 55V voltage rating, TO-252AA package footprint, and operating temperature range. The higher current rating (90A versus 64A) and improved on-resistance (8.4 mOhm versus 13 mOhm) provide enhanced performance. No circuit modifications are required.

Q: What is the difference between IRFR2405TRLPBF and IRFR2405TRPBF?

A: Both devices are electrically identical N-Channel 55V 56A MOSFETs in TO-252AA packages. The difference is in packaging format: TRLPBF indicates Cut Tape & Digi-Reel® packaging, while TRPBF indicates standard Cut Tape & Digi-Reel® packaging. Both are suitable for the same applications.

Q: Why do the Diodes Incorporated DMNH6012 devices show lower power dissipation (2W Ta) compared to other parts?

A: The power dissipation specification for DMNH6012LK3-13 and DMNH6012LK3Q-13 is rated at ambient temperature (Ta) rather than case temperature (Tc) as specified for other devices. This represents a different measurement methodology. The on-resistance and thermal characteristics remain comparable to other substitutes.

Q: Can I use IRFR2905ZTRPBF if my application requires 64A continuous current?

A: No. The IRFR2905ZTRPBF is rated for 42A continuous current, which is 34% below the IXTY64N055T specification. Using this device at 64A would exceed its rated current capacity and result in excessive junction temperature rise and potential device failure. This device is suitable only for applications where actual operating current does not exceed 42A.

Q: Are all substitute parts available in the same TO-252 package?

A: All substitute parts use the TO-252-3 DPAK surface mount package (also designated SC-63). This package is mechanically and electrically compatible with the original IXTY64N055T TO-252AA footprint. No PCB layout modifications are required for package compatibility.

Q: What is the significance of the TrenchMV™ and TrenchT2™ series designations?

A: These designations indicate the semiconductor technology platform used in device fabrication. TrenchMV™ is the original IXYS technology used in the IXTY64N055T. TrenchT2™ is an enhanced version used in the IXTY90N055T2, offering improved performance characteristics including lower on-resistance and higher current capacity. Both technologies are compatible for substitution purposes.

Q: Should I select a substitute with higher voltage rating (60V or 75V) instead of 55V?

A: Higher voltage ratings provide additional voltage margin and are electrically compatible with 55V applications. However, devices rated at 55V are preferred when available to optimize on-resistance and minimize power dissipation. Devices rated at 60V or 75V are acceptable alternatives when 55V-rated substitutes are unavailable or when the application benefits from additional voltage headroom.

Q: What does AEC-Q101 qualification mean for MOSFET selection?

A: AEC-Q101 is an automotive industry standard qualification that certifies devices for automotive and high-reliability applications. Devices with AEC-Q101 qualification (BUK7212-55B,118, DMNH6012LK3-13, DMNH6012LK3Q-13) have undergone enhanced testing and documentation requirements. These devices are suitable for automotive, industrial, and mission-critical applications requiring documented reliability.

Q: How do I determine if a substitute part with lower current rating is acceptable for my application?

A: Compare the actual continuous drain current required by your application circuit against the substitute part's rated continuous current (Id @ 25°C). The substitute part's rating must equal or exceed the application requirement. If the application requires 64A and a substitute is rated for 42A, that substitute is not suitable unless the application circuit is redesigned to operate at lower current levels.

Q: What is the impact of on-resistance (Rds On) differences between substitute parts?

A: On-resistance directly affects power dissipation and junction temperature. Lower on-resistance values reduce power loss and heat generation. The IXTY64N055T specifies 13 mOhm maximum on-resistance. Substitutes with lower on-resistance (such as IXTY90N055T2 at 8.4 mOhm) provide improved thermal performance. Substitutes with higher on-resistance (such as IRFR2405 at 16 mOhm) require thermal analysis to confirm acceptable junction temperature in the target application.

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