STP150NF55 N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The STP150NF55 is an N-Channel MOSFET manufactured by STMicroelectronics, rated for 55V drain-to-source voltage with 120A continuous drain current at 25°C. This device is packaged in TO-220-3 through-hole configuration and is part of the STripFET™ II series. The STP150NF55 is classified as obsolete, making identification of functionally equivalent substitute components necessary for ongoing design support and production continuity. Substitute parts must maintain compatibility with existing circuit designs while meeting or exceeding the electrical performance specifications of the original component.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	55	V
Continuous Drain Current (Id) @ 25°C	120	A (Tc)
On-State Resistance (Rds On) @ 60A, 10V	6	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	4	V
Gate Charge (Qg) @ 10V	190	nC
Power Dissipation (Max)	300	W (Tc)
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	TO-220-3	Through Hole
Technology	MOSFET (Metal Oxide)	N-Channel

Substitute Part Grouping Explanation

Substitute parts for the STP150NF55 are selected based on the following critical parameters that determine functional equivalence:

Primary Selection Criteria:

Drain-to-Source Voltage (Vdss): 55V or higher
Continuous Drain Current (Id): 75A or higher at 25°C
On-State Resistance (Rds On): 6mOhm to 8mOhm @ 10V gate drive
Gate Threshold Voltage (Vgs(th)): 3V to 4V @ 250µA
Package Type: TO-220-3 through-hole configuration
Operating Temperature Range: -55°C to 175°C minimum

Secondary Compatibility Factors:

Gate Charge (Qg): 36nC to 210nC @ 10V
Power Dissipation: 100W (Tc) or higher
RoHS3 Compliance and REACH Unaffected status
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts meeting these criteria maintain electrical compatibility while accommodating variations in manufacturing process, series designation, and product status. Parts with Vdss of 60V are acceptable as they provide voltage margin above the 55V requirement. Drain current ratings between 75A and 140A accommodate the 120A specification with appropriate thermal management considerations.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On (mOhm)	Vgs(th) (V)	Qg (nC)	Pd Max (W)	Temp Range (°C)	Status
STP150NF55	STMicroelectronics	55	120	6	4	190	300	-55 to 175	Obsolete
AUIRF3305	Infineon Technologies	55	140	8	4	150	330	-55 to 175	Obsolete
HUF75344P3	onsemi	55	75	8	4	210	285	-55 to 175	Active
AUIRF3205	International Rectifier	55	75	8	4	146	200	-55 to 175	Active
IPP80N06S207AKSA1	Infineon Technologies	55	80	6.6	4	110	250	-55 to 175	Discontinued
DMT6005LCT	Diodes Incorporated	60	100	6	3	47.1	104	-55 to 150	Active
DMTH6005LCT	Diodes Incorporated	60	100	6	3	47.1	125	-55 to 175	Active
DMTH6010SCT	Diodes Incorporated	60	100	7.2	4	36.3	125	-55 to 175	Active
DMT6010SCT	Diodes Incorporated	60	98	7.2	4	36.3	104	-55 to 150	Active
FDP070AN06A0	Fairchild Semiconductor	60	80	7	4	66	175	-55 to 175	Active
AOT2606L	Alpha & Omega Semiconductor Inc.	60	72	6.5	3.5	75	115	-55 to 175	Active

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

The AUIRF3305 and HUF75344P3 provide the closest electrical match to the STP150NF55. Both devices maintain 55V Vdss rating, support continuous drain currents of 75A to 140A, and operate across the full -55°C to 175°C temperature range. The AUIRF3305, though obsolete, offers superior current handling at 140A. The HUF75344P3 is actively manufactured by onsemi and provides 75A continuous current with RoHS3 compliance and MSL 1 rating, making it suitable for new production designs.

Secondary Substitutes (60V Vdss Rating):

The DMTH6005LCT and DMTH6010SCT from Diodes Incorporated are actively produced automotive-grade components (AEC-Q101 qualified) with 60V Vdss, 100A continuous drain current, and full -55°C to 175°C operating range. These parts provide voltage margin above the 55V specification and are suitable for applications where higher voltage rating is acceptable. The DMTH6005LCT matches the 6mOhm Rds On specification exactly.

Thermal Performance Consideration:

The FDP070AN06A0 (Fairchild Semiconductor) and AOT2606L (Alpha & Omega Semiconductor) offer 60V Vdss with lower continuous current ratings (80A and 72A respectively) but maintain active production status and full temperature range operation. These are appropriate for applications where the 120A specification can be reduced without circuit performance degradation.

Product Status Impact:

Active production parts (HUF75344P3, DMTH6005LCT, DMTH6010SCT, FDP070AN06A0, AOT2606L, AUIRF3205) are recommended for new designs and long-term production continuity. Obsolete parts (STP150NF55, AUIRF3305) and discontinued parts (IPP80N06S207AKSA1) should be used only for legacy system maintenance where existing inventory is available.

Frequently Asked Questions (FAQ)

Q: Can the HUF75344P3 directly replace the STP150NF55 in existing designs?

A: The HUF75344P3 is electrically compatible with the STP150NF55 for most applications. Both devices share 55V Vdss, 4V gate threshold voltage, TO-220-3 package, and -55°C to 175°C operating range. The HUF75344P3 supports 75A continuous current versus the STP150NF55's 120A; circuit thermal analysis is required to confirm adequate current margin for your specific application.

Q: Why are 60V-rated parts listed as substitutes for a 55V device?

A: MOSFETs with higher Vdss ratings (60V versus 55V) are functionally compatible substitutes because they provide voltage margin while maintaining all other electrical characteristics. A 60V-rated device safely operates at 55V with no performance degradation. This is standard engineering practice for component substitution.

Q: What is the significance of the AEC-Q101 qualification on the DMTH6005LCT and DMTH6010SCT?

A: AEC-Q101 qualification indicates these parts meet automotive industry reliability and quality standards. This certification is relevant only if your application requires automotive-grade components. For non-automotive applications, AEC-Q101 qualification provides no functional advantage but confirms manufacturing process control and reliability testing.

Q: Are there differences in gate charge between substitute parts that affect circuit design?

A: Yes. Gate charge (Qg) varies from 36.3nC (DMTH6010SCT) to 210nC (HUF75344P3). Lower gate charge reduces driver power dissipation and allows faster switching. Higher gate charge increases driver requirements but may provide better noise immunity. Gate drive circuit design should be verified for parts with Qg values differing by more than 50nC from the original design.

Q: Can I use the AUIRF3205 in place of the STP150NF55?

A: The AUIRF3205 is electrically compatible with matching 55V Vdss, 4V gate threshold, and TO-220-3 package. However, it supports only 75A continuous current compared to the STP150NF55's 120A. Use this substitute only if your circuit current requirements are 75A or less. The AUIRF3205 is actively manufactured, making it suitable for production designs with reduced current specifications.

Q: What is the difference between DMT6005LCT and DMTH6005LCT?

A: Both parts are from Diodes Incorporated with identical electrical specifications (60V, 100A, 6mOhm Rds On). The primary difference is operating temperature range: DMT6005LCT operates -55°C to 150°C, while DMTH6005LCT operates -55°C to 175°C. For applications requiring full -55°C to 175°C range, specify DMTH6005LCT. Both are AEC-Q101 qualified automotive-grade components.

Q: Is RoHS3 compliance important for my substitution decision?

A: RoHS3 compliance is mandatory for products sold in the European Union and many other markets. All recommended active production substitutes (HUF75344P3, DMTH6005LCT, DMTH6010SCT, FDP070AN06A0, AOT2606L) carry RoHS3 compliance. If your application requires RoHS3 certification, verify compliance status before finalizing part selection.

Q: Why is the IPP80N06S207AKSA1 listed as discontinued?

A: The IPP80N06S207AKSA1 is marked as discontinued at DiGi Electronics, indicating limited availability through major distributors. While this part meets electrical specifications (55V, 80A, 6.6mOhm Rds On), active production alternatives are preferred for new designs. Use this part only if existing inventory is available for legacy system support.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message