STP20NF06L Equivalent & Substitute Parts

Part Overview

The STP20NF06L is an N-Channel MOSFET manufactured by STMicroelectronics, rated for 60V drain-to-source voltage and 20A continuous drain current at 25°C. This device is part of the STripFET™ II series and features a TO-220-3 through-hole package. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. Substitute parts must maintain compatibility with the original electrical specifications and mechanical form factor while offering active product status or improved performance characteristics.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	60	V
Continuous Drain Current (Id) @ 25°C	20	A
Rds On (Max) @ 10A, 10V	70	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	4	V
Gate Charge (Qg) @ 10V	7.5	nC
Power Dissipation (Max)	60	W
Operating Temperature Range	-55 to 175	°C
Package Type	TO-220-3	Through Hole
FET Type	N-Channel	—
Technology	MOSFET (Metal Oxide)	—

Substitute Part Grouping Explanation

Substitute parts for the STP20NF06L are selected based on the following criteria:

Primary Substitution Parameters:

Drain-to-Source Voltage (Vdss): Must be ≥60V to maintain voltage rating compatibility
Continuous Drain Current (Id): Must be ≥20A to support the original current specification
Package Type: Must be TO-220-3 through-hole configuration for mechanical compatibility
FET Type: Must be N-Channel MOSFET technology
Operating Temperature Range: Must span -55°C to 175°C minimum

Secondary Compatibility Factors:

Rds On characteristics: Lower values indicate improved performance
Gate Charge (Qg): Lower values reduce switching losses
Power Dissipation: Higher ratings provide thermal margin
Product Status: Active status preferred for long-term availability

The substitute parts listed below meet or exceed the primary substitution parameters. Variations in secondary characteristics reflect design improvements or different application optimizations within the same voltage and current class.

Parameter Comparison

Parameter	STP20NF06L	STP16NF96L	FQP30N06	IRF1010EZPBF	IRFZ34NPBF	IRLZ24NPBF
Manufacturer	STMicroelectronics	STMicroelectronics	onsemi	Infineon Technologies	Infineon Technologies	Infineon Technologies
Vdss (V)	60	—	60	60	55	55
Id @ 25°C (A)	20	—	30	75	29	18
Rds On (Max) (mOhm)	70 @ 10A, 10V	—	40 @ 15A, 10V	8.5 @ 51A, 10V	40 @ 16A, 10V	60 @ 11A, 10V
Vgs(th) (V)	4 @ 250µA	—	4 @ 250µA	4 @ 100µA	4 @ 250µA	2 @ 250µA
Gate Charge Qg (nC)	7.5 @ 10V	—	25 @ 10V	86 @ 10V	34 @ 10V	15 @ 5V
Power Dissipation (W)	60	—	79	140	68	45
Operating Temperature (°C)	-55 to 175	—	-55 to 175	-55 to 175	-55 to 175	-55 to 175
Package	TO-220-3	—	TO-220-3	TO-220AB	TO-220AB	TO-220AB
Product Status	Obsolete	Active	Obsolete	Active	Active	Not For New Designs
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

STP16NF96L (STMicroelectronics)

This manufacturer-recommended substitute is produced by STMicroelectronics, the original STP20NF06L manufacturer. The part maintains active product status, ensuring long-term availability and supply chain continuity. Detailed electrical parameters are not provided in the available data; however, the manufacturer recommendation indicates functional equivalence within the STripFET™ series family. This option is preferred for designs requiring manufacturer-backed compatibility assurance.

FQP30N06 (onsemi)

The FQP30N06 meets the primary substitution criteria with 60V Vdss and 30A continuous drain current, exceeding the original 20A specification. The part is packaged in TO-220-3 and operates across the required temperature range. Although classified as obsolete, the FQP30N06 offers improved performance characteristics with lower Rds On (40mOhm) and higher power dissipation (79W). This substitute is suitable for applications where higher current capacity and thermal performance provide design margin.

IRF1010EZPBF (Infineon Technologies)

The IRF1010EZPBF is an active-status HEXFET® device with 60V Vdss and 75A continuous drain current, providing significant performance headroom above the original specification. The part features superior Rds On characteristics (8.5mOhm) and higher power dissipation (140W), making it suitable for high-efficiency applications. The TO-220AB package is mechanically compatible with TO-220-3 footprints. Active product status ensures long-term procurement availability.

IRFZ34NPBF (Infineon Technologies)

The IRFZ34NPBF is an active-status HEXFET® device with 55V Vdss and 29A continuous drain current. While the voltage rating is 5V lower than the original specification, the current capacity exceeds the 20A requirement. The part features improved Rds On (40mOhm) and operates across the required temperature range. This substitute is applicable for applications where the 55V rating is acceptable and higher current capacity is beneficial.

IRLZ24NPBF (Infineon Technologies)

The IRLZ24NPBF is classified as Not For New Designs and features 55V Vdss with 18A continuous drain current. The current rating falls below the original 20A specification, and the voltage rating is reduced to 55V. This substitute is not recommended for new designs due to its product status classification and reduced electrical specifications relative to the original part.

Frequently Asked Questions (FAQ)

Q: Can the STP20NF06L be directly replaced with any of these substitute parts?

A: Direct replacement depends on application requirements. All listed substitutes meet the primary criteria of 60V (or higher) Vdss, ≥20A continuous drain current, and TO-220 package compatibility. However, electrical performance characteristics vary. The STP16NF96L is the manufacturer-recommended option for direct equivalence. Other substitutes offer performance improvements but may require circuit validation.

Q: What is the difference between TO-220-3 and TO-220AB packages?

A: Both TO-220-3 and TO-220AB are three-lead through-hole packages with identical pin configurations and mechanical footprints. The designations reflect different manufacturer naming conventions. Parts specified as TO-220AB are mechanically compatible with TO-220-3 PCB layouts.

Q: Why is the STP20NF06L classified as obsolete?

A: The STP20NF06L is an older design within the STripFET™ II series. Obsolescence reflects the manufacturer's discontinuation of this specific model in favor of newer alternatives. The STP16NF96L represents the current-generation equivalent from STMicroelectronics.

Q: Can I use the IRF1010EZPBF as a drop-in replacement if my application only requires 20A?

A: Yes. The IRF1010EZPBF exceeds the 20A requirement with 75A continuous drain current capability. The higher current rating provides design margin and does not create compatibility issues. The superior Rds On characteristics (8.5mOhm versus 70mOhm) result in lower power dissipation and improved efficiency.

Q: What does "Not For New Designs" mean for the IRLZ24NPBF?

A: This product status indicates that Infineon Technologies no longer recommends this part for new circuit designs. While existing inventory may be available, the part is not supported for future development. The IRLZ24NPBF also features reduced electrical specifications (18A, 55V) compared to the original STP20NF06L, making it unsuitable as a primary substitute.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are RoHS3 compliant and REACH unaffected, matching the environmental compliance status of the original STP20NF06L.

Q: How do gate charge differences affect circuit performance?

A: Gate charge (Qg) determines the energy required to switch the MOSFET on and off. Lower gate charge reduces switching losses and allows faster switching speeds. The STP20NF06L has 7.5nC gate charge, while substitutes range from 15nC to 86nC. Higher gate charge values require more driver current but do not prevent functional substitution in standard applications.

Q: Which substitute offers the best thermal performance?

A: The IRF1010EZPBF provides the highest power dissipation rating at 140W, compared to 60W for the original STP20NF06L. This superior thermal capability makes the IRF1010EZPBF suitable for high-power applications where thermal management is critical.

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