FQP55N10 Equivalent & Substitute Parts

Part Overview

The FQP55N10 is an N-Channel MOSFET manufactured by onsemi, rated for 100V drain-to-source voltage with 55A continuous drain current at 25°C. This device is packaged in TO-220-3 through-hole configuration and is part of the QFET® series. The FQP55N10 is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity. Substitute parts must maintain electrical compatibility within the specified parameter ranges while accommodating the through-hole TO-220-3 package requirement.

Key Parameters

Parameter	FQP55N10 Value	Unit
Drain-to-Source Voltage (Vdss)	100	V
Continuous Drain Current (Id) @ 25°C	55	A (Tc)
Drive Voltage (Max Rds On)	10	V
Rds On (Max) @ Id, Vgs	26	mOhm @ 27.5A, 10V
Gate Threshold Voltage Vgs(th) (Max) @ Id	4	V @ 250µA
Gate Charge (Qg) (Max) @ Vgs	98	nC @ 10V
Power Dissipation (Max)	155	W (Tc)
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	TO-220-3	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the FQP55N10 is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Drain-to-Source Voltage (Vdss): Must equal or exceed 100V
Continuous Drain Current (Id) @ 25°C: Must equal or exceed 55A
Drive Voltage (Max Rds On): Must be 10V or compatible gate drive specification
Package Type: Must be TO-220-3 through-hole configuration
Operating Temperature Range: Must support -55°C to 175°C or equivalent

Secondary Compatibility Factors:

Rds On (Max) @ Id, Vgs: Lower values indicate improved performance
Gate Charge (Qg): Affects switching speed and gate drive requirements
Power Dissipation (Max): Must support thermal requirements of the application
RoHS and REACH Compliance: Must maintain regulatory compliance

Substitute parts are grouped into two categories: Manufacturer Recommended (direct replacement capability) and Similar (electrical equivalence with parameter variations).

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On Max (mOhm)	Qg Max (nC)	Power Diss (W)	Temp Range (°C)	Package	Status
FQP55N10	onsemi	100	55	26	98	155	-55 to 175	TO-220-3	Obsolete
FDP61N20	onsemi	200	61	41	75	417	-55 to 150	TO-220-3	Active
IXTP64N10L2	IXYS	100	64	32	100	357	-55 to 150	TO-220-3	Active
PHP45NQ10T,127	NXP Semiconductors	100	47	25	61	150	-55 to 175	TO-220-3	Active
PSMN009-100P,127	NXP Semiconductors	100	75	8.8	156	230	-55 to 175	TO-220-3	Active
PSMN013-100PS,127	Nexperia USA Inc.	100	68	13.9	59	170	-55 to 175	TO-220-3	Obsolete
PSMN015-100P,127	Nexperia USA Inc.	100	75	15	90	300	-55 to 175	TO-220-3	Obsolete
PSMN016-100PS,127	Nexperia USA Inc.	100	57	16	49	148	-55 to 175	TO-220-3	Obsolete
PSMN027-100PS,127	Nexperia USA Inc.	100	37	26.8	30	103	-55 to 175	TO-220-3	Obsolete
PHP18NQ10T,127	Nexperia USA Inc.	100	18	90	21	79	-55 to 175	TO-220-3	Obsolete
AOT2910L	Alpha & Omega Semiconductor Inc.	100	30	24	25	50	-55 to 175	TO-220-3	Active

Engineering Selection Recommendations

Manufacturer Recommended Substitute:

The FDP61N20 (onsemi) is the manufacturer-recommended substitute. This part maintains onsemi manufacturing continuity and is classified as Active product status, ensuring long-term availability. The FDP61N20 exceeds the FQP55N10 specifications with 200V Vdss rating and 61A continuous drain current. The higher voltage rating provides design margin for transient overvoltage conditions. The device is ROHS3 compliant and REACH unaffected, maintaining regulatory compliance. Operating temperature range is -55°C to 150°C, which covers the lower end of the FQP55N10 range but remains suitable for most industrial applications.

Primary Active Alternatives:

IXTP64N10L2 (IXYS) provides direct voltage and package compatibility at 100V Vdss with 64A continuous drain current, exceeding the FQP55N10 current rating. This device is Active status with ROHS3 compliance. Operating temperature extends to 150°C, which is acceptable for applications not requiring the full 175°C upper limit.

PSMN009-100P,127 (NXP Semiconductors) offers the highest current capability at 75A with superior Rds On performance (8.8 mOhm). This part is Active status, ROHS3 compliant, and maintains the full -55°C to 175°C operating range. The enhanced thermal performance (230W dissipation) supports high-current applications.

PHP45NQ10T,127 (NXP Semiconductors) provides close electrical matching with 47A continuous drain current and 25 mOhm Rds On. This part is Active status and maintains full -55°C to 175°C operating temperature range, matching the FQP55N10 specification exactly.

Obsolete Alternatives:

PSMN013-100PS,127, PSMN015-100P,127, PSMN016-100PS,127, and PSMN027-100PS,127 are classified as Obsolete. These parts maintain 100V Vdss rating and TO-220-3 packaging with varying current ratings (37A to 75A). While currently in inventory, these parts should be considered for legacy system support only. PSMN015-100P,127 and PSMN013-100PS,127 provide current ratings exceeding the FQP55N10 (75A and 68A respectively) with improved thermal performance.

PHP18NQ10T,127 (Nexperia USA Inc.) is Obsolete status with significantly reduced current rating (18A), making it unsuitable as a direct substitute for the FQP55N10.

AOT2910L (Alpha & Omega Semiconductor Inc.) is Active status but provides only 30A continuous drain current, falling below the FQP55N10 requirement of 55A. This part is not suitable for direct substitution.

Frequently Asked Questions (FAQ)

Q: Can the FDP61N20 be used as a direct replacement for the FQP55N10?

A: Yes. The FDP61N20 is the manufacturer-recommended substitute from onsemi. It maintains TO-220-3 packaging and exceeds the FQP55N10 electrical specifications with 200V Vdss and 61A continuous drain current. The higher voltage rating provides additional design margin. The primary consideration is the reduced upper operating temperature limit (150°C vs. 175°C), which is acceptable for most applications.

Q: What is the difference between the PSMN009-100P,127 and PSMN015-100P,127?

A: Both parts are rated for 100V Vdss and 75A continuous drain current in TO-220-3 packaging. The PSMN009-100P,127 features superior Rds On performance (8.8 mOhm vs. 15 mOhm), resulting in lower conduction losses and higher power dissipation capability (230W vs. 300W). The PSMN009-100P,127 is currently Active status, while PSMN015-100P,127 is Obsolete. For new designs, PSMN009-100P,127 is preferred.

Q: Why is the IXTP64N10L2 suitable for FQP55N10 replacement?

A: The IXTP64N10L2 matches the FQP55N10 at 100V Vdss and TO-220-3 packaging while exceeding the current rating (64A vs. 55A). The device is Active status with ROHS3 compliance. The Rds On specification (32 mOhm) is slightly higher than the FQP55N10 (26 mOhm), resulting in marginally higher conduction losses. The operating temperature range (-55°C to 150°C) covers most industrial applications, with the exception of systems requiring operation above 150°C.

Q: Can I use the PHP45NQ10T,127 as a substitute?

A: The PHP45NQ10T,127 is suitable for applications where the 47A continuous drain current meets system requirements. This part provides excellent parameter matching with 100V Vdss, 25 mOhm Rds On, and full -55°C to 175°C operating range. However, if the application requires the full 55A capability of the FQP55N10, the PHP45NQ10T,127 current rating is insufficient. For designs with 47A or lower current requirements, this part is an excellent choice.

Q: What is the significance of Rds On (on-state resistance) in selecting a substitute?

A: Rds On directly affects conduction losses and thermal performance. Lower Rds On values result in reduced power dissipation during normal operation. The FQP55N10 specifies 26 mOhm at 27.5A and 10V gate drive. Substitutes with lower Rds On (such as PSMN009-100P,127 at 8.8 mOhm) provide improved efficiency and reduced heat generation. Substitutes with higher Rds On (such as PHP18NQ10T,127 at 90 mOhm) increase conduction losses and may require enhanced thermal management.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant, maintaining regulatory compliance with the FQP55N10. REACH status varies: most parts are REACH Unaffected, while PHP45NQ10T,127 is REACH Affected. For applications subject to REACH regulations, verify compliance requirements with your procurement department.

Q: What is the impact of Gate Charge (Qg) on circuit design?

A: Gate charge affects the gate drive circuit requirements and switching speed. The FQP55N10 specifies 98 nC at 10V. Substitutes with lower gate charge (such as FDP61N20 at 75 nC) require less gate drive energy and enable faster switching. Substitutes with higher gate charge (such as PSMN009-100P,127 at 156 nC) require more robust gate drive circuits. Verify that the existing gate drive circuit can supply the required charge for the selected substitute.

Q: Why are some substitute parts classified as Obsolete?

A: Obsolete classification indicates that the manufacturer has discontinued active production and support. While these parts may be available from inventory, they are not recommended for new designs. Obsolete parts should be reserved for legacy system maintenance and repair. For new designs and production, select from Active status parts such as FDP61N20, IXTP64N10L2, PSMN009-100P,127, PHP45NQ10T,127, or AOT2910L.

Q: Can I use the AOT2910L as a substitute?

A: The AOT2910L is not suitable as a direct substitute for the FQP55N10. While both devices are rated for 100V Vdss and TO-220-3 packaging, the AOT2910L provides only 30A continuous drain current, which is significantly below the FQP55N10 requirement of 55A. The AOT2910L is suitable only for applications with current requirements of 30A or lower.

Q: What thermal considerations apply when selecting a substitute?

A: Power dissipation capability varies significantly among substitutes. The FQP55N10 dissipates 155W at Tc. Substitutes with higher power dissipation ratings (such as PSMN009-100P,127 at 230W or FDP61N20 at 417W) provide greater thermal margin and may require less aggressive cooling. Substitutes with lower ratings (such as AOT2910L at 50W) require enhanced thermal management. Verify that the thermal design of your application accommodates the power dissipation of the selected substitute.

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