STP36NF06 N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The STP36NF06 is an N-Channel MOSFET manufactured by STMicroelectronics, rated for 60V drain-to-source voltage with 30A continuous drain current at 25°C. This device is packaged in TO-220-3 through-hole configuration and belongs to the STripFET™ II series. The part is currently listed as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and production continuity. Substitute parts must maintain compatibility across voltage ratings, current handling, thermal characteristics, and mechanical packaging to ensure direct replacement capability.

Key Parameters

Parameter	STP36NF06 Value	Unit
FET Type	N-Channel	—
Drain-to-Source Voltage (Vdss)	60	V
Continuous Drain Current (Id) @ 25°C	30	A
On-State Resistance (Rds On) @ 15A, 10V	40	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	4	V
Power Dissipation (Max)	70	W
Operating Temperature Range	-55 to 175	°C
Package Type	TO-220-3	—
Mounting Type	Through Hole	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the STP36NF06 is determined by the following critical parameters:

Voltage Rating Compatibility: The drain-to-source voltage (Vdss) must be equal to or greater than 60V. Parts rated below 60V (such as BUZ11-NR4941 at 50V and HUF75321P3 at 55V) operate at reduced voltage margins and are not direct substitutes.

Current Rating Compatibility: The continuous drain current (Id) must be equal to or greater than 30A at 25°C. Parts with lower current ratings cannot handle the same load conditions.

On-State Resistance (Rds On): The maximum on-state resistance at the specified gate voltage (10V) should not significantly exceed 40mOhm to maintain thermal performance and power dissipation characteristics within acceptable limits.

Package and Mounting: All substitute parts must use TO-220-3 through-hole packaging to ensure mechanical and thermal compatibility with existing PCB layouts and heat sink mounting arrangements.

Temperature Range: Operating temperature range must span -55°C to 175°C to maintain functional equivalence across the full operating envelope.

Compliance Standards: RoHS3 compliance is required for environmental and regulatory alignment with the original part specification.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On (mOhm)	Power Dissipation (W)	Temp Range (°C)	Package	Status
STP36NF06	STMicroelectronics	60	30	40 @ 15A, 10V	70	-55 to 175	TO-220-3	Obsolete
STP55NF06	STMicroelectronics	60	50	18 @ 27.5A, 10V	110	-55 to 175	TO-220-3	Active
BUZ11-NR4941	onsemi	50	30	40 @ 15A, 10V	75	-55 to 150	TO-220-3	Active
FQP30N06	onsemi	60	30	40 @ 15A, 10V	79	-55 to 175	TO-220-3	Obsolete
FQP30N06L	onsemi	60	32	35 @ 16A, 10V	79	-55 to 175	TO-220-3	Obsolete
HUF75321P3	Fairchild Semiconductor	55	35	34 @ 35A, 10V	93	-55 to 175	TO-220-3	Active
HUF76423P3	onsemi	60	35	30 @ 35A, 10V	85	-55 to 175	TO-220-3	Active
IRF1010EZPBF	Infineon Technologies	60	75	8.5 @ 51A, 10V	140	-55 to 175	TO-220-3	Active
IRFZ24NPBF	Infineon Technologies	55	17	70 @ 10A, 10V	45	-55 to 175	TO-220-3	Active
IRFZ34NPBF	Infineon Technologies	55	29	40 @ 16A, 10V	68	-55 to 175	TO-220-3	Active
IRFZ34PBF	Vishay Siliconix	60	30	50 @ 18A, 10V	88	-55 to 175	TO-220-3	Active

Engineering Selection Recommendations

Direct Electrical Equivalents (60V, 30A Minimum):

The following parts meet or exceed all critical electrical parameters of the STP36NF06 while maintaining active product status and full compliance certifications:

FQP30N06L (onsemi, QFET® series) provides 32A continuous drain current with improved on-state resistance of 35mOhm at 16A, 10V. This part is RoHS3 compliant and operates across the full -55°C to 175°C temperature range. Although listed as obsolete, it represents the closest electrical match with enhanced performance characteristics.

HUF76423P3 (onsemi, UltraFET™ series) delivers 35A continuous drain current at 60V with superior on-state resistance of 30mOhm at 35A, 10V. This part is currently active, RoHS3 compliant, and fully rated for -55°C to 175°C operation. The lower on-state resistance provides improved thermal efficiency compared to the original STP36NF06.

IRFZ34PBF (Vishay Siliconix, HEXFET® series) matches the STP36NF06 specification exactly at 60V, 30A with RoHS3 compliance and -55°C to 175°C operating range. This part is currently active and provides a direct functional replacement.

IRF1010EZPBF (Infineon Technologies, HEXFET® series) exceeds specifications with 75A continuous drain current at 60V and significantly lower on-state resistance of 8.5mOhm at 51A, 10V. This part is active, RoHS3 compliant, and suitable for applications requiring enhanced current handling and reduced power dissipation.

Higher Voltage Margin Alternatives (55V Rating):

IRFZ34NPBF (Infineon Technologies, HEXFET® series) operates at 55V with 29A continuous drain current and 40mOhm on-state resistance. This part is active and RoHS3 compliant but operates at reduced voltage margin (5V below the original specification). Use only in applications where 55V maximum voltage is acceptable.

HUF75321P3 (Fairchild Semiconductor, UltraFET™ series) provides 35A at 55V with 34mOhm on-state resistance. This part is active and operates across the full temperature range but similarly operates at reduced voltage margin.

STP55NF06 (STMicroelectronics, STripFET™ II series) is the higher-current variant within the same product family, rated for 50A at 60V with 18mOhm on-state resistance. This part is currently active and RoHS3 compliant, providing superior performance for applications requiring higher current capacity.

Not Recommended:

BUZ11-NR4941 (onsemi) operates at only 50V, which falls below the 60V specification of the original part. The reduced voltage rating creates insufficient margin for applications designed around 60V operation.

IRFZ24NPBF (Infineon Technologies) is rated for only 17A continuous drain current, which is insufficient for the 30A requirement of the STP36NF06.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part rated for 55V instead of 60V?

A: Substitution with 55V-rated parts (such as IRFZ34NPBF or HUF75321P3) is only acceptable if your application operates at voltages below 55V. If your circuit is designed for 60V operation, the reduced voltage margin creates risk of device failure. For 60V applications, use only parts rated for 60V or higher (FQP30N06L, HUF76423P3, IRFZ34PBF, or IRF1010EZPBF).

Q: What is the significance of on-state resistance (Rds On) differences?

A: On-state resistance directly affects power dissipation and heat generation. Lower Rds On values (such as 30mOhm in HUF76423P3 or 8.5mOhm in IRF1010EZPBF) result in reduced power loss and lower junction temperatures compared to higher values (50mOhm in IRFZ34PBF). For thermally constrained applications, parts with lower Rds On provide improved reliability and performance margin.

Q: Are all substitute parts compatible with existing PCB layouts?

A: Yes. All listed substitute parts use TO-220-3 through-hole packaging, which maintains identical mechanical dimensions and pin configuration. Direct PCB mounting without layout modification is possible. However, verify that heat sink mounting arrangements can accommodate any differences in thermal performance requirements.

Q: Why are some substitute parts listed as obsolete?

A: FQP30N06 and FQP30N06L are obsolete onsemi products but remain functionally equivalent to the STP36NF06. For new designs, prioritize active parts such as HUF76423P3, IRFZ34PBF, or IRF1010EZPBF to ensure long-term supply availability and manufacturer support.

Q: What is the difference between STP36NF06 and STP55NF06?

A: Both parts are STMicroelectronics STripFET™ II series devices rated for 60V operation. The STP55NF06 is a higher-current variant rated for 50A (versus 30A) with significantly lower on-state resistance (18mOhm versus 40mOhm). The STP55NF06 is currently active and suitable for applications requiring higher current capacity or lower power dissipation.

Q: Do all substitute parts meet RoHS3 compliance?

A: All recommended substitute parts are RoHS3 compliant except where noted. Verify compliance documentation for your specific application requirements. IRFZ34PBF is REACH Affected; confirm regulatory status for your end-use application.

Q: Can I use IRF1010EZPBF as a direct replacement for STP36NF06?

A: Yes. The IRF1010EZPBF exceeds all electrical specifications of the STP36NF06 (75A versus 30A, 8.5mOhm versus 40mOhm Rds On) while maintaining 60V rating, TO-220-3 packaging, and -55°C to 175°C operating range. This part is active and RoHS3 compliant. The enhanced performance characteristics make it suitable for direct substitution with improved thermal and current-handling margins.

Q: What is the operating temperature range significance?

A: The STP36NF06 operates from -55°C to 175°C. Most substitute parts maintain this full range. BUZ11-NR4941 is limited to -55°C to 150°C, which may be insufficient for applications requiring operation above 150°C. Verify temperature range compatibility with your application requirements.

Q: Are there any REACH or ECCN restrictions on substitute parts?

A: All parts listed are classified as EAR99 for export control purposes. IRFZ34PBF is REACH Affected; all others are REACH Unaffected. Verify regulatory compliance for your specific end-use application and geographic distribution requirements.

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