IXTA120N075T2 Equivalent & Substitute Parts

Part Overview

The IXTA120N075T2 is an N-Channel MOSFET manufactured by IXYS, rated for 75V drain-to-source voltage and 120A continuous drain current at 25°C. This device features the TrenchT2™ technology platform and is housed in a Surface Mount TO-263AA package. The part is currently in Active product status with 872 units in stock.

Substitute parts are necessary when the primary part becomes unavailable, when alternative sourcing is required for supply chain optimization, or when design flexibility across multiple manufacturers is needed while maintaining equivalent electrical and mechanical performance within specified parameter tolerances.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	75	V
Continuous Drain Current (Id) @ 25°C	120	A (Tc)
On-State Resistance (Rds On) @ 60A, 10V	7.7	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	4	V
Gate Charge (Qg) @ 10V	78	nC
Power Dissipation (Max)	250	W (Tc)
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	TO-263-3 (D2PAK)	Surface Mount
Maximum Gate Voltage (Vgs)	±20	V
Input Capacitance (Ciss) @ 25V	4740	pF

Substitute Part Grouping Explanation

Substitution eligibility for the IXTA120N075T2 is determined by the following critical parameters:

Primary Substitution Criteria:

Drain-to-Source Voltage (Vdss): 75V nominal rating
Continuous Drain Current (Id): 120A minimum at 25°C
Package Type: TO-263-3 / D2PAK (Surface Mount, 2 Leads + Tab)
Operating Temperature Range: -55°C to 175°C (TJ)
Gate Voltage Rating (Vgs): ±20V compatible
RoHS3 Compliance and MSL Level 1

Secondary Compatibility Parameters:

On-State Resistance (Rds On): Equivalent or lower values acceptable
Gate Charge (Qg): Similar values preferred for drive circuit compatibility
Power Dissipation: Equal or greater thermal capability acceptable
Input Capacitance (Ciss): Similar values preferred for switching characteristics

Parts meeting these criteria can be directly substituted in applications where the IXTA120N075T2 is specified, provided the application does not require specific technology platform features (such as TrenchT2™ proprietary characteristics).

Parameter Comparison

Parameter	IXTA120N075T2	IRFS3307ZTRLPBF	IRFS3307ZTRRPBF	STB140NF75T4	PSMN6R5-80BS,118	PSMN008-75B,118
Manufacturer	IXYS	Infineon	Infineon	STMicroelectronics	Nexperia	Nexperia
Vdss (V)	75	75	75	75	80	75
Id @ 25°C (A)	120	120	120	120	100	75
Rds On (mOhm)	7.7 @ 60A, 10V	5.8 @ 75A, 10V	5.8 @ 75A, 10V	7.5 @ 70A, 10V	6.9 @ 15A, 10V	8.5 @ 25A, 10V
Vgs(th) (V)	4 @ 250µA	4 @ 150µA	4 @ 150µA	4 @ 250µA	4 @ 1mA	4 @ 1mA
Qg (nC)	78 @ 10V	110 @ 10V	110 @ 10V	218 @ 10V	71 @ 10V	122.8 @ 10V
Power Dissipation (W)	250	230	230	310	210	230
Package	TO-263AA	D2PAK	TO-263 (D2PAK)	D2PAK	D2PAK	D2PAK
Operating Temp (°C)	-55 to 175	-55 to 175	-55 to 175	-55 to 175	-55 to 175	-55 to 175
Vgs Max (V)	±20	±20	±20	±20	±20	±20
Ciss (pF)	4740 @ 25V	4750 @ 50V	4750 @ 50V	5000 @ 25V	4461 @ 40V	5260 @ 25V
Product Status	Active	Active	Active	Active	Active	Active
RoHS3 Compliance	Yes	Yes	Yes	Yes	Yes	Yes

Engineering Selection Recommendations

Direct Equivalents (75V, 120A Rating):

The IRFS3307ZTRLPBF and IRFS3307ZTRRPBF (Infineon HEXFET® series) provide direct electrical equivalence to the IXTA120N075T2. Both variants share identical electrical specifications with 75V Vdss, 120A continuous drain current, and equivalent on-state resistance characteristics. The ZTRLPBF variant is supplied in Cut Tape & Digi-Reel® packaging, while the ZTRRPBF is supplied in Tape & Reel format. Both are Active status products with full RoHS3 compliance and MSL Level 1 rating. These parts are suitable for one-to-one replacement in existing designs.

The STB140NF75T4 (STMicroelectronics STripFET™ III series) also meets the 75V, 120A specification with Active product status and full compliance certifications. This device offers superior power dissipation capability (310W vs. 250W), making it suitable for applications with higher thermal demands. The higher gate charge (218 nC) requires consideration in gate drive circuit design.

Voltage-Compatible Alternatives (80V Rating):

The PSMN6R5-80BS,118 (Nexperia) provides 80V Vdss with 100A continuous drain current. This part is suitable for applications where the 75V rating provides insufficient margin or where 80V-rated components are preferred for system-level voltage tolerance. The lower gate charge (71 nC) and reduced input capacitance (4461 pF) offer improved switching performance characteristics compared to the primary part.

Current-Reduced Alternative (75V, 75A Rating):

The PSMN008-75B,118 (Nexperia TrenchMOS™ series) maintains the 75V Vdss rating but with reduced continuous drain current (75A). This part is suitable only for applications where the full 120A capability is not required. The higher gate charge (122.8 nC) and input capacitance (5260 pF) should be evaluated against gate drive circuit specifications.

Obsolete Part Consideration:

The BUK9606-55A,118 (Nexperia) is listed with Obsolete product status and is not recommended for new designs. This part is retained in the substitute list for legacy system maintenance only.

Frequently Asked Questions (FAQ)

Q: Can I substitute the IRFS3307ZTRLPBF for the IXTA120N075T2 in my existing design?

A: Yes. The IRFS3307ZTRLPBF provides identical electrical specifications (75V, 120A) and is housed in the same D2PAK package. Both parts are Active status with RoHS3 compliance. The primary difference is the gate charge specification (110 nC vs. 78 nC), which may require gate drive circuit evaluation if operating at maximum switching frequencies.

Q: What is the difference between IRFS3307ZTRLPBF and IRFS3307ZTRRPBF?

A: Both parts are electrically identical with 75V, 120A ratings and equivalent performance characteristics. The difference is packaging format: ZTRLPBF is supplied in Cut Tape & Digi-Reel® format, while ZTRRPBF is supplied in Tape & Reel format. Selection depends on procurement and assembly line requirements.

Q: Can I use the PSMN6R5-80BS,118 as a substitute if my application requires 120A continuous current?

A: No. The PSMN6R5-80BS,118 is rated for 100A continuous drain current, which is below the 120A requirement of the IXTA120N075T2. This part is suitable only for applications where the maximum required current does not exceed 100A.

Q: Why does the STB140NF75T4 have higher gate charge than the IXTA120N075T2?

A: The STB140NF75T4 specifies 218 nC gate charge compared to 78 nC for the IXTA120N075T2. This difference reflects different silicon technology and die design. Higher gate charge requires proportionally higher gate drive current or longer switching times. Gate drive circuit compatibility must be verified before substitution.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this reference are RoHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating, matching the compliance profile of the IXTA120N075T2.

Q: Can I use the PSMN008-75B,118 in a 120A application?

A: No. The PSMN008-75B,118 is rated for 75A continuous drain current. Using this part in a 120A application would exceed its current rating and result in thermal stress and potential device failure. This part is suitable only for applications requiring 75A or less.

Q: What package considerations should I evaluate when substituting parts?

A: All listed substitute parts use the TO-263-3 / D2PAK Surface Mount package with identical pin configuration (2 Leads + Tab). PCB layout and thermal management considerations remain consistent across all substitutes. Verify that your PCB footprint accommodates the D2PAK package standard.

Q: Is the BUK9606-55A,118 suitable for new designs?

A: No. The BUK9606-55A,118 carries Obsolete product status and should not be used in new designs. This part is listed for reference only in legacy system maintenance scenarios. For new designs, select from Active status alternatives such as IRFS3307ZTRLPBF, STB140NF75T4, or PSMN6R5-80BS,118.

Q: How do I determine which substitute part is best for my application?

A: Selection depends on three primary factors: (1) Required continuous drain current—must be 120A or higher; (2) Voltage rating—75V minimum, with 80V acceptable for higher margin applications; (3) Gate drive circuit compatibility—verify gate charge and input capacitance specifications against your driver circuit specifications. All Active status parts meet compliance and reliability requirements.

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