STN3NF06 N-Channel MOSFET 60V 4A SOT-223 Equivalent & Substitute Parts

Part Overview

The STN3NF06 is an N-Channel MOSFET manufactured by STMicroelectronics in the STripFET™ II series. This surface mount device operates at 60V drain-to-source voltage with a continuous drain current rating of 4A at 25°C and is housed in a SOT-223 package. The part is currently in Active product status with 7792 units in stock.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter ranges. Alternative components may be required due to supply chain considerations, manufacturing availability, or design optimization needs while maintaining functional equivalence in the target application.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	60	V
Continuous Drain Current (Id) @ 25°C	4	A
On-State Resistance (Rds On) @ 1.5A, 10V	100	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	4	V
Gate Charge (Qg) @ 10V	13	nC
Input Capacitance (Ciss) @ 25V	315	pF
Power Dissipation (Max)	3.3	W
Operating Temperature Range	-55 to 150	°C
Package Type	SOT-223	TO-261-4, TO-261AA
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution eligibility for the STN3NF06 is determined by the following critical parameters:

Voltage Rating Compatibility: All substitute parts must maintain a Drain-to-Source Voltage (Vdss) rating of 60V or greater to ensure safe operation within the same voltage domain.

Current Capacity: Substitute parts must support a continuous drain current (Id) of 4A or greater at 25°C to meet or exceed the original part's current handling capability.

Package Compatibility: All substitute parts must use the SOT-223 surface mount package (TO-261-4 or TO-261AA case designation) to ensure mechanical and thermal compatibility with existing PCB layouts.

On-State Resistance (Rds On): The on-state resistance must be comparable to the original specification to maintain similar power dissipation and thermal characteristics during operation.

Temperature Range: Operating temperature range must span at least -55°C to 150°C to match the original part's thermal operating window.

Regulatory Compliance: All substitute parts must maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating.

Substitute parts are grouped into two categories: Direct Equivalents (matching or exceeding all primary parameters) and Functional Alternatives (meeting voltage, current, and package requirements with acceptable parameter variations).

Parameter Comparison

Parameter	STN3NF06	BSP318SH6327XTSA1	DMN6068SE-13	IRFL024ZTRPBF	IRFL024NTRPBF	NCV8440ASTT3G	NTF3055L108T1G	ZXMN6A08GTA
Manufacturer	STMicroelectronics	Infineon Technologies	Diodes Incorporated	Infineon Technologies	Infineon Technologies	onsemi	onsemi	Diodes Incorporated
Vdss (V)	60	60	60	55	55	59	60	60
Id @ 25°C (A)	4	2.6	4.1	5.1	2.8	2.6	3	3.8
Rds On (mOhm)	100 @ 1.5A, 10V	90 @ 2.6A, 10V	68 @ 12A, 10V	57.5 @ 3.1A, 10V	75 @ 2.8A, 10V	110 @ 2.6A, 10V	120 @ 1.5A, 5V	80 @ 4.8A, 10V
Vgs(th) (V)	4 @ 250µA	2 @ 20µA	3 @ 250µA	4 @ 250µA	4 @ 250µA	1.9 @ 100µA	2 @ 250µA	1 @ 250µA
Qg (nC)	13 @ 10V	20 @ 10V	10.3 @ 10V	14 @ 10V	18.3 @ 10V	4.5 @ 4.5V	15 @ 5V	5.8 @ 10V
Ciss (pF)	315 @ 25V	380 @ 25V	502 @ 30V	340 @ 25V	400 @ 25V	155 @ 35V	440 @ 25V	459 @ 40V
Power Dissipation (W)	3.3	1.8	2	1	1	1.69	1.3	2
Operating Temp Range (°C)	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 175	-55 to 150
Package	SOT-223	PG-SOT223-4	SOT-223-3	SOT-223	SOT-223	SOT-223 (TO-261)	SOT-223 (TO-261)	SOT-223-3
Product Status	Active	Last Time Buy	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Direct Equivalents (Recommended for 1:1 Replacement):

DMN6068SE-13 (Diodes Incorporated) is the primary direct equivalent. It maintains 60V Vdss rating, exceeds the 4A current requirement at 4.1A, and provides superior on-state resistance performance at 68mOhm. The part is in Active product status with 44,681 units in stock, ensuring supply continuity. All regulatory certifications match the original specification.

ZXMN6A08GTA (Diodes Incorporated) provides 60V Vdss with 3.8A continuous drain current, meeting the primary electrical requirements. On-state resistance of 80mOhm is acceptable for most applications. The part is Active with 42,230 units available.

Functional Alternatives (Acceptable for Most Applications):

IRFL024ZTRPBF (Infineon Technologies) operates at 55V Vdss with 5.1A continuous drain current, exceeding current capacity. The 5V voltage margin below the original specification may be acceptable in applications with adequate design margin. The part is Active with 24,199 units in stock.

NTF3055L108T1G (onsemi) maintains 60V Vdss with 3A continuous drain current. Operating temperature range extends to 175°C, providing enhanced thermal margin. The part is Active with 32,200 units available.

Limited Substitution (Voltage Derating Required):

IRFL024NTRPBF and IRFL014NTRPBF operate at 55V Vdss, requiring 5V voltage derating from the original specification. These parts are suitable only for applications with confirmed voltage margin.

NCV8440ASTT3G (onsemi) operates at 59V Vdss with 2.6A continuous drain current. The 1.4A current reduction below the original specification limits applicability to lower-current designs.

BSP318SH6327XTSA1 (Infineon Technologies) is in Last Time Buy status, indicating end-of-life product. This part should be avoided for new designs despite meeting electrical specifications.

Selection Criteria Summary:

For applications requiring full parameter equivalence, select DMN6068SE-13 or ZXMN6A08GTA. For applications with voltage margin, IRFL024ZTRPBF provides superior current capacity. For extended temperature operation, NTF3055L108T1G is recommended. All recommended parts maintain ROHS3 compliance and MSL Level 1 rating.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with lower continuous drain current than the original STN3NF06?

A: No. The STN3NF06 is rated for 4A continuous drain current. Substitute parts must maintain 4A or greater current capacity to ensure safe operation under the same load conditions. Parts with lower current ratings (such as NCV8440ASTT3G at 2.6A) are not suitable for direct replacement unless the application circuit is redesigned for reduced current operation.

Q: What is the significance of the voltage rating difference between the STN3NF06 (60V) and IRFL024ZTRPBF (55V)?

A: The 5V difference represents a design margin reduction. The STN3NF06 provides 60V maximum drain-to-source voltage capability, while IRFL024ZTRPBF is rated to 55V. For applications operating near the maximum voltage specification, this 5V reduction may be unacceptable. For applications with confirmed voltage margin below 55V, IRFL024ZTRPBF is acceptable.

Q: Are all substitute parts available in the same SOT-223 package?

A: Yes. All listed substitute parts use SOT-223 surface mount packaging (TO-261-4 or TO-261AA case designation). Package dimensions and pin configurations are mechanically compatible with the original STN3NF06, allowing direct PCB layout substitution without redesign.

Q: Why is BSP318SH6327XTSA1 listed as a substitute if it is in Last Time Buy status?

A: BSP318SH6327XTSA1 meets the electrical and mechanical substitution criteria and is included in the reference for completeness. However, Last Time Buy status indicates the manufacturer is discontinuing this product. New designs should avoid this part and select from Active status alternatives such as DMN6068SE-13 or ZXMN6A08GTA.

Q: How do I determine if a substitute part's on-state resistance (Rds On) is acceptable for my application?

A: On-state resistance directly affects power dissipation and thermal performance. Lower Rds On values reduce heat generation. The STN3NF06 specifies 100mOhm at 1.5A and 10V. Substitute parts with lower Rds On values (such as DMN6068SE-13 at 68mOhm) provide improved thermal performance. Parts with higher Rds On values increase power dissipation and may require thermal management review.

Q: What is the importance of gate charge (Qg) when selecting a substitute part?

A: Gate charge affects switching speed and driver circuit requirements. The STN3NF06 specifies 13nC at 10V. Substitute parts with significantly lower gate charge (such as NCV8440ASTT3G at 4.5nC) switch faster and reduce driver power consumption. Higher gate charge values (such as NTF3055L108T1G at 15nC) require more driver current but are generally acceptable if the driver circuit has adequate current capacity.

Q: Can I use NTF3055L108T1G in applications requiring operation above 150°C?

A: NTF3055L108T1G extends the operating temperature range to 175°C, providing 25°C additional thermal margin compared to the STN3NF06 (150°C maximum). This part is suitable for applications requiring operation up to 175°C. For applications exceeding 175°C, neither the original part nor this substitute is appropriate.

Q: Are all substitute parts ROHS3 compliant and MSL Level 1 rated?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, matching the original STN3NF06 specification. This ensures compatibility with standard PCB assembly processes and storage requirements.

Q: What is the primary advantage of DMN6068SE-13 as a substitute for the STN3NF06?

A: DMN6068SE-13 provides the best overall parameter match: 60V Vdss (matching the original), 4.1A continuous drain current (exceeding the 4A requirement), and superior on-state resistance at 68mOhm (compared to 100mOhm). The part is in Active status with high inventory availability (44,681 units), ensuring supply continuity and long-term availability.

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