IXTP90N055T2 N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The IXTP90N055T2 is an N-Channel MOSFET manufactured by IXYS in the TrenchT2™ series, rated for 55V drain-to-source voltage and 90A continuous drain current at 25°C. The device is packaged in TO-220-3 through-hole configuration with a maximum power dissipation of 150W and operates across the temperature range of -55°C to 175°C. This part is currently in active production status and is RoHS3 compliant.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when design requirements demand higher current capacity or power dissipation, or when alternative manufacturers' components offer improved performance characteristics within the same electrical and mechanical specifications.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	55	V
Continuous Drain Current (Id) @ 25°C	90	A (Tc)
On-State Resistance (Rds On) @ 25A, 10V	8.4	mOhm
Gate-Source Threshold Voltage (Vgs(th)) @ 250µA	4	V
Gate Charge (Qg) @ 10V	42	nC
Input Capacitance (Ciss) @ 25V	2770	pF
Power Dissipation (Max)	150	W (Tc)
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	TO-220-3	Through Hole
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the IXTP90N055T2 is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Drain-to-Source Voltage (Vdss): Must be equal to or greater than 55V
Continuous Drain Current (Id): Must be equal to or greater than 90A at 25°C
Gate-Source Threshold Voltage (Vgs(th)): Must be compatible with 4V specification
Package Type: Must be TO-220-3 through-hole configuration
Operating Temperature Range: Must support -55°C to 175°C
RoHS Compliance: Must maintain ROHS3 compliance status

Secondary Compatibility Parameters:

On-State Resistance (Rds On): Lower or equal values indicate improved performance
Gate Charge (Qg): Lower values reduce switching losses
Input Capacitance (Ciss): Affects gate drive requirements
Power Dissipation: Higher ratings provide thermal margin

Substitute parts are grouped into two categories: Direct Equivalents (matching all primary criteria with active product status) and Functional Alternatives (meeting electrical requirements with potential trade-offs in current capacity, voltage rating, or product status).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On (mOhm)	Vgs(th) (V)	Qg (nC)	Ciss (pF)	Power Diss. (W)	Package	Status
IXTP90N055T2	IXYS	55	90	8.4	4	42	2770	150	TO-220-3	Active
HUF75344P3	onsemi	55	75	8	4	210	3200	285	TO-220-3	Active
IRF3205PBF	Infineon Technologies	55	110	8	4	146	3247	200	TO-220-3	Active
IRL3705NPBF	Infineon Technologies	55	89	10	2	98	3600	170	TO-220-3	Active
CSD18534KCS	Texas Instruments	60	100	9.5	2.3	24	1880	107	TO-220-3	Active
DMNH6008SCT	Diodes Incorporated	60	130	8	4	21	2596	210	TO-220-3	Active
DMNH6008SCTQ	Diodes Incorporated	60	130	8	4	21	2596	210	TO-220-3	Active
AUIRF3305	Infineon Technologies	55	140	8	4	150	3650	330	TO-220-3	Obsolete
IRF2807ZPBF	Infineon Technologies	75	75	9.4	4	110	3270	170	TO-220-3	Active
IRFB3607PBF	Infineon Technologies	75	80	9	4	84	3070	140	TO-220-3	Not For New Designs
IRL2505PBF	Infineon Technologies	55	104	8	2	130	5000	200	TO-220-3	Not For New Designs

Engineering Selection Recommendations

Recommended Direct Substitutes (Active Status, 55V Rating):

The following parts maintain the 55V drain-to-source voltage specification and active product status:

IRF3205PBF (Infineon Technologies): Exceeds current specification at 110A, maintains 8mOhm on-state resistance, and provides 200W power dissipation. Suitable for applications requiring higher current margin.
IRL3705NPBF (Infineon Technologies): Matches current specification at 89A with lower gate charge (98nC) and reduced input capacitance (3600pF), enabling faster switching characteristics. Lower threshold voltage (2V) requires gate drive circuit verification.
HUF75344P3 (onsemi): Provides 75A current rating with superior power dissipation (285W) and active product status. Suitable for thermal-constrained applications where current margin is acceptable.

Recommended Substitutes with Voltage Margin (60V Rating):

DMNH6008SCT and DMNH6008SCTQ (Diodes Incorporated): Both rated for 60V and 130A with AEC-Q101 automotive qualification. Provide 10V higher voltage margin and 40A higher current capacity. Identical electrical specifications between standard and qualified variants.
CSD18534KCS (Texas Instruments): Rated for 60V and 100A with significantly lower gate charge (24nC) and input capacitance (1880pF), reducing switching losses. Lower threshold voltage (2.3V) requires gate drive compatibility verification.

Not Recommended for New Designs:

AUIRF3305 (Infineon Technologies): Obsolete product status disqualifies from new design applications despite superior 140A current rating.
IRFB3607PBF (Infineon Technologies): Marked "Not For New Designs" status; 75V rating exceeds requirement with reduced current capacity (80A).
IRL2505PBF (Infineon Technologies): Marked "Not For New Designs" status; higher input capacitance (5000pF) and gate charge (130nC) increase switching losses.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a higher voltage rating than the IXTP90N055T2?

A: Yes. Parts rated for 60V or 75V drain-to-source voltage are electrically compatible with 55V applications. Higher voltage ratings provide additional safety margin and do not degrade circuit performance. However, verify that the substitute part's gate drive voltage requirements and threshold voltage are compatible with your circuit design.

Q: What is the minimum current rating required for a substitute part?

A: The substitute part must be rated for continuous drain current equal to or greater than 90A at 25°C. Parts rated below 90A (such as HUF75344P3 at 75A) operate outside the specified current envelope and may experience thermal stress or reduced reliability in applications requiring the full 90A specification.

Q: Are there differences between DMNH6008SCT and DMNH6008SCTQ?

A: Both parts share identical electrical specifications and TO-220-3 packaging. The DMNH6008SCTQ variant includes AEC-Q101 automotive qualification, making it suitable for automotive applications. Selection depends on application requirements; non-automotive applications may use either variant.

Q: How do gate charge and input capacitance affect substitute selection?

A: Gate charge (Qg) and input capacitance (Ciss) determine gate drive circuit requirements and switching speed. Lower values reduce switching losses and enable faster switching frequencies. Parts with significantly different values (such as CSD18534KCS with 24nC gate charge versus IXTP90N055T2 with 42nC) may require gate drive circuit redesign to maintain switching performance.

Q: Can I substitute the IXTP90N055T2 with a part rated for lower current capacity?

A: No. Substitutes must maintain equal or higher current ratings. Using a part rated below 90A creates thermal stress, reduces reliability margin, and violates the original design specification. The application circuit must be re-evaluated if lower current capacity is acceptable.

Q: What is the significance of threshold voltage differences between substitute parts?

A: Threshold voltage (Vgs(th)) determines the gate voltage at which the MOSFET begins to conduct. The IXTP90N055T2 specifies 4V at 250µA. Substitutes with lower threshold voltages (such as IRL3705NPBF at 2V or CSD18534KCS at 2.3V) conduct at lower gate voltages, potentially affecting gate drive circuit timing and requiring verification of gate drive compatibility.

Q: Is RoHS3 compliance maintained across all recommended substitutes?

A: Yes. All recommended active-status substitute parts listed maintain ROHS3 compliance, ensuring environmental and regulatory compatibility with the original IXTP90N055T2 specification.

Q: Why should I avoid obsolete parts like AUIRF3305?

A: Obsolete parts face supply discontinuation, extended lead times, and potential quality control variations. New designs must use active-status components to ensure long-term availability, consistent manufacturing quality, and manufacturer technical support throughout the product lifecycle.

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