STP65NF06 N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The STP65NF06 is an N-Channel MOSFET manufactured by STMicroelectronics, rated for 60V drain-to-source voltage and 60A continuous drain current in a TO-220 through-hole package. This device is part of the STripFET™ II series and is classified as obsolete. Due to its obsolete status, equivalent and substitute parts from active manufacturers are necessary for new designs and ongoing production requirements. Substitute devices must maintain compatibility with the electrical specifications and mechanical form factor while meeting current RoHS3 compliance standards.

Key Parameters

Parameter	STP65NF06 Value	Unit
FET Type	N-Channel	—
Drain-to-Source Voltage (Vdss)	60	V
Continuous Drain Current (Id) @ 25°C	60	A (Tc)
Drive Voltage (Max Rds On)	10	V
Rds On (Max) @ Id, Vgs	14	mOhm @ 30A, 10V
Gate Threshold Voltage (Vgs(th)) @ Id	4	V @ 250µA
Gate Charge (Qg) @ Vgs	75	nC @ 10V
Power Dissipation (Max)	110	W (Tc)
Operating Temperature Range	-55 to 175	°C (TJ)
Mounting Type	Through Hole	—
Package	TO-220-3	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the STP65NF06 is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Drain-to-Source Voltage (Vdss): Must be ≥60V to maintain voltage margin
Continuous Drain Current (Id): Must be ≥60A to support the rated current requirement
Drive Voltage: 10V gate drive compatibility
Package Type: TO-220-3 through-hole form factor for mechanical compatibility
Operating Temperature Range: Must support -55°C to 175°C minimum
RoHS3 Compliance: Required for regulatory alignment

Secondary Compatibility Factors:

Rds On (Max): Lower values indicate improved performance; values ≤16mOhm are acceptable
Gate Charge (Qg): Lower values reduce switching losses; values ≤130nC are acceptable
Power Dissipation: Higher ratings provide thermal margin

Substitute parts are grouped into two categories: Direct Equivalents (matching Vdss and Id specifications) and Enhanced Alternatives (higher voltage or current ratings providing design margin).

Parameter Comparison

Manufacturer	Part Number	Vdss (V)	Id @ 25°C (A)	Rds On Max (mOhm)	Qg (nC)	Power Diss. (W)	Temp Range (°C)	Package	Status
STMicroelectronics	STP65NF06	60	60	14	75	110	-55 to 175	TO-220-3	Obsolete
Texas Instruments	CSD18537NKCS	60	50	14	18	94	-55 to 150	TO-220-3	Active
Diodes Incorporated	DMT6009LCT	60	37.2	12	33.5	25	-55 to 150	TO-220-3	Active
Fairchild Semiconductor	FDP16AN08A0	75	58	16	42	135	-55 to 175	TO-220-3	Active
onsemi	HUF75339P3	55	75	12	130	200	-55 to 175	TO-220-3	Active
Alpha & Omega Semiconductor	AOT430	75	80	11.5	114	268	-55 to 175	TO-220-3	Active
Infineon Technologies	IRF1010EPBF	60	84	12	130	200	-55 to 175	TO-220-3	Not For New Designs
Infineon Technologies	IRF1010EZPBF	60	75	8.5	86	140	-55 to 175	TO-220-3	Active
Infineon Technologies	IRF1010NPBF	55	85	11	120	180	-55 to 175	TO-220-3	Not For New Designs
Infineon Technologies	IRF1018EPBF	60	79	8.4	69	110	-55 to 175	TO-220-3	Active
Infineon Technologies	IRFB3806PBF	60	43	15.8	30	71	-55 to 175	TO-220-3	Active

Engineering Selection Recommendations

Category 1: Direct Voltage & Current Match (Vdss = 60V, Id ≥ 60A)

The following parts provide equivalent voltage ratings and meet or exceed the 60A current requirement:

IRF1010EZPBF (Infineon): 60V, 75A, Active status. Offers improved Rds On (8.5mOhm) and lower gate charge (86nC) compared to the STP65NF06. Full temperature range support (-55°C to 175°C). Recommended for new designs requiring direct replacement with performance enhancement.
IRF1018EPBF (Infineon): 60V, 79A, Active status. Provides the lowest Rds On (8.4mOhm) and gate charge (69nC) among 60V options. Matches the STP65NF06 power dissipation rating (110W). Suitable for applications prioritizing switching efficiency.

Category 2: Enhanced Voltage Rating (Vdss ≥ 75V, Id ≥ 58A)

These parts provide higher voltage margin while maintaining current capacity:

FDP16AN08A0 (Fairchild Semiconductor): 75V, 58A, Active status. Rated for 135W power dissipation. Maintains compatibility with 10V gate drive. Suitable for applications requiring voltage derating margin.
AOT430 (Alpha & Omega Semiconductor): 75V, 80A, Active status. Highest power dissipation rating (268W) among substitutes. Provides both voltage and current margin. Recommended for high-power applications.

Category 3: Enhanced Current Rating (Vdss ≥ 55V, Id ≥ 75A)

These parts prioritize current capacity:

HUF75339P3 (onsemi): 55V, 75A, Active status. Rated for 200W power dissipation. Voltage rating is 5V below the STP65NF06; suitable only for applications with maximum operating voltage below 55V.
IRF1010NPBF (Infineon): 55V, 85A, Not For New Designs status. Should not be selected for new product development.

Compliance & Regulatory Status:

All recommended active-status substitutes maintain RoHS3 compliance and REACH unaffected status, matching the STP65NF06 regulatory profile. Parts marked "Not For New Designs" should be avoided in new product development.

Frequently Asked Questions (FAQ)

Q: Can the CSD18537NKCS replace the STP65NF06 in all applications?

A: The CSD18537NKCS has a lower continuous drain current rating (50A vs. 60A). It is suitable only for applications where the actual operating current does not exceed 50A. The voltage rating (60V) and package (TO-220-3) are compatible. Operating temperature range is limited to -55°C to 150°C, which may not support the full -55°C to 175°C range of the original device.

Q: What is the difference between IRF1010EZPBF and IRF1018EPBF?

A: Both are 60V-rated Infineon HEXFET devices in TO-220-3 packages with Active status. The IRF1018EPBF has a higher continuous drain current (79A vs. 75A) and lower Rds On (8.4mOhm vs. 8.5mOhm). The IRF1010EZPBF has slightly higher gate charge (86nC vs. 69nC). For the STP65NF06 replacement, either is acceptable; IRF1018EPBF is preferred if switching speed is critical.

Q: Why is the HUF75339P3 rated at 55V instead of 60V?

A: The HUF75339P3 is an onsemi UltraFET device optimized for lower voltage applications. The 55V rating is a design choice by the manufacturer. This part is suitable only for circuits where the maximum drain-to-source voltage does not exceed 55V. It is not a direct replacement for 60V-rated applications.

Q: Are parts marked "Not For New Designs" usable in existing production?

A: Parts with "Not For New Designs" status (IRF1010EPBF, IRF1010NPBF) may be available from inventory but should not be selected for new product development. For ongoing production of existing designs, consult with the manufacturer regarding long-term availability and transition planning.

Q: What is the significance of Rds On and gate charge in substitution?

A: Rds On (on-state resistance) directly affects power dissipation and heat generation. Lower Rds On values reduce losses. Gate charge (Qg) affects switching speed and driver power requirements. Lower gate charge enables faster switching and reduces driver stress. Both parameters influence thermal management and circuit efficiency but do not prevent substitution if the primary voltage and current ratings are met.

Q: Can I use a 75V-rated MOSFET in a 60V circuit?

A: Yes. A 75V-rated device (such as FDP16AN08A0 or AOT430) can be used in a 60V circuit. The higher voltage rating provides design margin and does not create compatibility issues. However, the device will have different electrical characteristics (typically higher Rds On and gate charge) compared to a 60V-optimized device.

Q: Is the TO-220-3 package identical across all substitutes?

A: All listed substitutes use the TO-220-3 through-hole package, which is mechanically and electrically compatible with the STP65NF06. Pin assignments follow the standard TO-220-3 configuration (Gate, Drain, Source). Physical dimensions and mounting hole spacing are identical, allowing direct PCB replacement without layout modification.

Q: What is the impact of operating temperature range differences?

A: The STP65NF06 supports -55°C to 175°C. Some substitutes (CSD18537NKCS, DMT6009LCT) are limited to -55°C to 150°C. If the application requires operation above 150°C, these parts are not suitable. For applications operating within -55°C to 150°C, the reduced range does not affect functionality.

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