STP95N4F3 Equivalent & Substitute Parts

Part Overview

The STP95N4F3 is an N-Channel MOSFET manufactured by STMicroelectronics, rated for 40V drain-to-source voltage with 80A continuous drain current at 25°C. This device is housed in a TO-220AB through-hole package and is part of the STripFET™ III series. The part is currently Active in product status with full RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter ranges while maintaining compatible packaging and thermal characteristics. The following substitute devices meet the core electrical requirements of the STP95N4F3 while offering alternative sourcing options.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	40	V
Continuous Drain Current (Id) @ 25°C	80	A (Tc)
On-Resistance (Rds On) @ 40A, 10V	6.2	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	4	V
Gate Charge (Qg) @ 10V	54	nC
Power Dissipation (Max)	110	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

Substitute parts for the STP95N4F3 are classified based on the following electrical and mechanical criteria:

Primary Substitution Criteria:

Drain-to-Source Voltage (Vdss): 40V minimum
Continuous Drain Current (Id): 80A or greater at 25°C
Package Type: TO-220 or TO-220-3 through-hole configuration
Operating Temperature Range: -55°C to 175°C or equivalent
RoHS3 Compliance and REACH Unaffected status

Substitution Categories:

Category A - Direct Electrical Equivalents (80A @ 40V): Parts meeting or exceeding the 80A continuous drain current specification at 40V Vdss with compatible thermal and electrical characteristics.

Category B - Higher Current Capability (>80A @ 40V): Parts rated for drain currents exceeding 80A at 40V, providing enhanced current handling with maintained voltage rating.

Category C - Alternative Voltage Ratings: Parts with higher Vdss ratings (55V) that maintain 40V operation capability but with different current or thermal specifications.

Category D - Reduced Current Capability (<80A @ 40V): Parts with lower continuous drain current ratings that may be suitable for applications not requiring full 80A capacity.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On @ 10V (mOhm)	Qg @ 10V (nC)	Power Diss. (W)	Temp Range (°C)	Package	Status
STP95N4F3	STMicroelectronics	40	80 (Tc)	6.2 @ 40A	54	110	-55 to 175	TO-220-3	Active
CSD18504KCS	Texas Instruments	40	100 (Tc)	7 @ 40A	25	115	-55 to 150	TO-220-3	Active
IPP039N04LGXKSA1	Infineon Technologies	40	80 (Tc)	3.9 @ 80A	78	94	-55 to 175	TO-220-3	Not For New Designs
IPP041N04NGXKSA1	Infineon Technologies	40	80 (Tc)	4.1 @ 80A	56	94	-55 to 175	TO-220-3	Active
IRF1104PBF	Infineon Technologies	40	100 (Tc)	9 @ 60A	93	170	-55 to 175	TO-220-3	Active
IRF3205ZPBF	Infineon Technologies	55	75 (Tc)	6.5 @ 66A	110	170	-55 to 175	TO-220-3	Active
IRF4104PBF	Infineon Technologies	40	75 (Tc)	5.5 @ 75A	100	140	-55 to 175	TO-220-3	Active
IRL1004PBF	Infineon Technologies	40	130 (Tc)	6.5 @ 78A	100	200	-55 to 175	TO-220-3	Active
IRL3803PBF	Infineon Technologies	30	140 (Tc)	6 @ 71A	140	200	-55 to 175	TO-220-3	Not For New Designs
IXTP120N04T2	IXYS	40	120 (Tc)	6.1 @ 25A	58	200	-55 to 175	TO-220-3	Active
PSMN2R2-40PS,127	Nexperia USA Inc.	40	100 (Tc)	2.1 @ 25A	130	306	-55 to 175	TO-220-3	Obsolete

Engineering Selection Recommendations

Active Status Substitutes (Recommended for New Designs):

The following parts maintain Active product status and are suitable for new design implementations:

IPP041N04NGXKSA1 (Infineon Technologies OptiMOS™ series) provides direct electrical equivalence with 80A continuous drain current at 40V. This part demonstrates superior on-resistance performance (4.1 mOhm @ 80A, 10V) compared to the STP95N4F3 (6.2 mOhm @ 40A, 10V) and maintains identical operating temperature range (-55°C to 175°C). RoHS3 compliance and unlimited moisture sensitivity rating are confirmed.

CSD18504KCS (Texas Instruments NexFET™ series) offers enhanced current capability at 100A (Tc) with 40V Vdss rating. Operating temperature range extends to -55°C to 150°C. Gate charge is significantly reduced (25 nC @ 10V) compared to the STP95N4F3, resulting in faster switching characteristics. RoHS3 compliance is confirmed.

IRF1104PBF (Infineon Technologies HEXFET® series) provides 100A continuous drain current at 40V with enhanced power dissipation capability (170W). Operating temperature range matches the STP95N4F3 (-55°C to 175°C). RoHS3 compliance is confirmed.

IXTP120N04T2 (IXYS TrenchT2™ series) delivers 120A continuous drain current at 40V with 200W power dissipation. Gate charge specification (58 nC @ 10V) is comparable to the STP95N4F3. Full temperature range compatibility (-55°C to 175°C) and RoHS3 compliance are confirmed.

IRL1004PBF (Infineon Technologies HEXFET® series) provides the highest continuous drain current rating at 130A with 40V Vdss. Power dissipation capability reaches 200W. Operating temperature range and RoHS3 compliance match the STP95N4F3 specifications.

Obsolete or Not For New Designs Status:

IPP039N04LGXKSA1 and IRL3803PBF carry "Not For New Designs" status and should not be selected for new circuit implementations. PSMN2R2-40PS,127 is marked Obsolete and is not recommended for new applications.

Voltage Rating Consideration:

IRF3205ZPBF operates at 55V Vdss, which exceeds the STP95N4F3 specification. This part is suitable only for applications where higher voltage margin is required and the 75A continuous drain current (versus 80A) is acceptable.

Current Rating Consideration:

IRF4104PBF is rated for 75A continuous drain current, which is below the STP95N4F3 specification of 80A. This part is suitable only for applications with reduced current requirements.

Frequently Asked Questions (FAQ)

Q: Can the CSD18504KCS replace the STP95N4F3 in all applications?

A: The CSD18504KCS provides higher continuous drain current (100A vs. 80A) and lower gate charge (25 nC vs. 54 nC), making it suitable for most applications. However, the maximum operating temperature is limited to 150°C compared to 175°C for the STP95N4F3. Verify application temperature requirements before substitution.

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

A: On-resistance directly affects power dissipation and thermal performance. Lower Rds On values (such as IPP039N04LGXKSA1 at 3.9 mOhm) result in reduced heat generation. Higher Rds On values (such as IRF1104PBF at 9 mOhm) increase power dissipation. Select based on thermal design requirements and available heatsinking.

Q: Why is gate charge (Qg) important for substitution?

A: Gate charge determines the energy required to switch the MOSFET and affects switching speed. Lower gate charge (CSD18504KCS at 25 nC) enables faster switching with reduced driver power consumption. Higher gate charge (PSMN2R2-40PS,127 at 130 nC) requires more driver capability but may provide other performance benefits.

Q: Are all substitute parts available in the same TO-220 package?

A: All listed substitute parts use TO-220-3 or TO-220AB through-hole packaging, which are mechanically compatible. Pin configurations are identical, allowing direct PCB footprint compatibility.

Q: What does "Not For New Designs" status mean?

A: Parts marked "Not For New Designs" are in mature or declining production phases. While functional equivalents exist, these parts should not be selected for new circuit designs. Use Active status parts instead.

Q: Is the PSMN2R2-40PS,127 suitable as a substitute despite Obsolete status?

A: The PSMN2R2-40PS,127 is marked Obsolete and should not be used for new designs. Active alternatives such as IPP041N04NGXKSA1 or CSD18504KCS provide equivalent or superior performance with ongoing manufacturer support.

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

A: Evaluate based on: (1) continuous drain current requirement (80A minimum for direct replacement), (2) operating temperature range (-55°C to 175°C preferred), (3) thermal dissipation capability, (4) switching speed requirements (gate charge consideration), and (5) Active product status for new designs.

Q: Can the IRF3205ZPBF be used as a direct replacement?

A: The IRF3205ZPBF has a higher Vdss rating (55V vs. 40V) and lower continuous drain current (75A vs. 80A). It is suitable only for applications where the 75A current rating is acceptable and the higher voltage rating provides design margin.

Q: What compliance certifications should I verify before substitution?

A: Confirm RoHS3 compliance and REACH Unaffected status for all substitute parts. All listed alternatives meet these requirements. Verify moisture sensitivity level (MSL) compatibility with your assembly process; most substitutes carry MSL 1 (Unlimited) rating.

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