STP11N65M2 Equivalent & Substitute Parts

Part Overview

The STP11N65M2 is an N-Channel MOSFET manufactured by STMicroelectronics, rated for 650V drain-to-source voltage with 7A continuous drain current at 25°C. This device is part of the MDmesh™ II Plus series and is classified as Active product status. The component is housed in a TO-220-3 through-hole package and is suitable for high-voltage switching applications requiring moderate current handling.

Substitute parts become necessary when the primary component reaches end-of-life status, inventory constraints occur, or design requirements necessitate alternative electrical or thermal characteristics. The following equivalent devices maintain functional compatibility within specified parameter ranges while offering different performance trade-offs.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	650	V
Continuous Drain Current (Id) @ 25°C	7	A
Drive Voltage (Max Rds On)	10	V
Rds On (Max) @ Id, Vgs	670 mOhm @ 3.5A, 10V	mOhm
Gate Threshold Voltage (Vgs(th)) @ Id	4	V @ 250µA
Gate Charge (Qg) @ Vgs	12.5	nC @ 10V
Power Dissipation (Max)	85	W
Operating Temperature Range	-55 to 150	°C
Package Type	TO-220-3	Through Hole
FET Type	N-Channel	-

Substitute Part Grouping Explanation

Substitution compatibility for the STP11N65M2 is determined by the following critical parameters:

Voltage Rating Compatibility: The drain-to-source voltage (Vdss) must equal or exceed 650V. Substitute parts with lower Vdss ratings (such as 600V) operate outside the specified voltage envelope and are not suitable for direct replacement in circuits designed for 650V operation.

Current Rating Compatibility: The continuous drain current (Id) must meet or exceed 7A at 25°C. Substitute parts with equal or higher current ratings provide functional equivalence or improved thermal margin.

On-State Resistance (Rds On): The maximum on-state resistance at specified gate and drain conditions determines switching losses and thermal performance. Lower Rds On values indicate improved efficiency.

Gate Charge (Qg): Lower gate charge values reduce switching losses and gate drive requirements, improving overall circuit efficiency.

Package and Mounting: All substitute parts must use TO-220-3 through-hole packaging to ensure mechanical and thermal interface compatibility.

Temperature Range: Operating temperature range must encompass -55°C to 150°C to maintain functional equivalence across the specified thermal envelope.

Based on these criteria, the following parts are identified as substitutes:

AOT10N60 (Alpha & Omega Semiconductor Inc.): Provides higher current rating (10A) but lower voltage rating (600V). Suitable only for applications where 600V operation is acceptable.

FCP850N80Z (onsemi): Provides higher voltage rating (800V) and comparable current rating (8A). Suitable for applications requiring enhanced voltage margin.

FCP650N80Z (onsemi): Provides higher voltage rating (800V) and higher current rating (10A). Suitable for applications requiring enhanced voltage and current margin.

Parameter Comparison

Parameter	STP11N65M2	AOT10N60	FCP850N80Z	FCP650N80Z	Unit
Manufacturer	STMicroelectronics	Alpha & Omega Semiconductor Inc.	onsemi	onsemi	-
Vdss (Drain-Source Voltage)	650	600	800	800	V
Id (Continuous Drain Current @ 25°C)	7	10	8	10	A
Rds On (Max) @ Id, Vgs	670 @ 3.5A, 10V	750 @ 5A, 10V	850 @ 3A, 10V	650 @ 4A, 10V	mOhm
Vgs(th) (Max) @ Id	4 @ 250µA	4.5 @ 250µA	4.5 @ 600µA	4.5 @ 800µA	V
Gate Charge (Qg) @ Vgs	12.5 @ 10V	40 @ 10V	29 @ 10V	35 @ 10V	nC
Vgs (Max)	±25	±30	±20	±20	V
Input Capacitance (Ciss) @ Vds	410 @ 100V	1600 @ 25V	1315 @ 100V	1565 @ 100V	pF
Power Dissipation (Max)	85	250	136	162	W
Operating Temperature Range	-55 to 150	-55 to 150	-55 to 150	-55 to 150	°C
Package	TO-220-3	TO-220-3	TO-220-3	TO-220-3	-
Product Status	Active	Not For New Designs	Not For New Designs	Obsolete	-
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	-

Engineering Selection Recommendations

STP11N65M2 (Primary Selection): This component maintains Active product status and is recommended for new designs. It offers the lowest gate charge (12.5 nC) among the listed options, resulting in minimal switching losses and reduced gate drive power requirements. The device is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

FCP850N80Z (Voltage-Enhanced Substitute): This onsemi device provides 800V voltage rating with 8A current capability, offering enhanced voltage margin over the primary part. However, it carries Not For New Designs status, limiting its suitability for new product development. The higher gate charge (29 nC) and input capacitance (1315 pF) result in increased switching losses compared to the primary part. ROHS3 compliance is maintained.

FCP650N80Z (Maximum Performance Substitute): This onsemi device provides the highest voltage rating (800V) and current rating (10A) among all listed options, with the lowest on-state resistance (650 mOhm @ 4A, 10V). However, it is classified as Obsolete, making it unsuitable for new designs and potentially subject to supply constraints. The higher gate charge (35 nC) and input capacitance (1565 pF) increase switching losses. ROHS3 compliance is maintained.

AOT10N60 (Current-Enhanced Substitute): This Alpha & Omega Semiconductor device provides 10A current rating but operates at reduced voltage (600V), placing it outside the 650V specification envelope. It carries Not For New Designs status. The significantly higher gate charge (40 nC) and input capacitance (1600 pF) result in substantially increased switching losses. This part is suitable only for applications where 600V operation is acceptable and higher current capacity is required.

For applications requiring direct replacement of the STP11N65M2, the FCP850N80Z offers the best balance of voltage margin and active availability, despite its Not For New Designs status. For new designs, the STP11N65M2 remains the recommended choice.

Frequently Asked Questions (FAQ)

Q: Can AOT10N60 be used as a direct replacement for STP11N65M2?

A: No. The AOT10N60 operates at 600V, which is below the 650V specification of the STP11N65M2. Using this part in a circuit designed for 650V operation creates a voltage margin violation and increases the risk of device failure. The higher gate charge (40 nC versus 12.5 nC) also increases switching losses and gate drive requirements.

Q: What are the advantages of FCP850N80Z over STP11N65M2?

A: The FCP850N80Z provides 800V voltage rating compared to 650V, offering 150V additional voltage margin. It also provides 8A current rating versus 7A. However, it exhibits higher gate charge (29 nC versus 12.5 nC) and higher input capacitance (1315 pF versus 410 pF), resulting in increased switching losses and higher gate drive power consumption.

Q: Why is FCP650N80Z listed as Obsolete?

A: Obsolete status indicates that the manufacturer has discontinued production and support for this device. While inventory may remain available from distributors, long-term supply cannot be guaranteed. New designs should not incorporate obsolete components.

Q: Are all substitute parts compatible with the TO-220-3 package footprint?

A: Yes. All listed substitute parts use TO-220-3 through-hole packaging, ensuring mechanical and thermal interface compatibility with existing PCB designs and heat sink assemblies.

Q: What is the significance of gate charge (Qg) differences between these parts?

A: Gate charge determines the energy required to switch the MOSFET on and off. Lower gate charge (STP11N65M2 at 12.5 nC) reduces switching losses and gate drive power consumption. Higher gate charge (AOT10N60 at 40 nC) increases switching losses and requires more robust gate drive circuitry.

Q: Can FCP650N80Z be used in new product designs?

A: No. FCP650N80Z carries Obsolete product status, which prohibits its use in new designs. Obsolete components lack manufacturer support, may have limited inventory, and present long-term supply chain risk.

Q: What is the impact of input capacitance (Ciss) differences on circuit performance?

A: Input capacitance affects gate charge requirements and switching speed. The STP11N65M2 exhibits the lowest input capacitance (410 pF @ 100V), enabling faster switching and lower gate drive power. Substitute parts with higher input capacitance (1315-1600 pF) require higher gate drive current and result in slower switching transitions.

Q: Is the operating temperature range identical across all listed parts?

A: Yes. All parts operate across the -55°C to 150°C temperature range, ensuring thermal compatibility in applications spanning this envelope.

Q: Are all parts RoHS3 compliant?

A: Yes. All listed parts maintain ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements for electronic components.

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