NTP2955 Equivalent & Substitute Parts

Part Overview

The NTP2955 is a P-Channel MOSFET manufactured by onsemi, rated for 60V drain-to-source voltage with 2.4A continuous drain current at 25°C. The device is packaged in a Through Hole TO-220-3 configuration and is designed for applications requiring P-channel switching and amplification in moderate-power circuits.

The NTP2955 carries an Obsolete product status. Locating equivalent or substitute components is necessary to support ongoing maintenance, repair, and redesign activities for legacy systems utilizing this device.

Key Parameters

Parameter	Value	Unit
FET Type	P-Channel	—
Drain to Source Voltage (Vdss)	60	V
Current - Continuous Drain (Id) @ 25°C	2.4	A (Ta)
Rds On (Max) @ Id, Vgs	196	mOhm @ 12A, 10V
Vgs(th) (Max) @ Id	4	V @ 250µA
Gate Charge (Qg) (Max) @ Vgs	14	nC @ 10V
Vgs (Max)	±20	V
Input Capacitance (Ciss) (Max) @ Vds	700	pF @ 25V
Power Dissipation (Max)	2.4 (Ta), 62.5 (Tc)	W
Operating Temperature	−55 to 175	°C (TJ)
Mounting Type	Through Hole	—
Package / Case	TO-220-3	—
Technology	MOSFET (Metal Oxide)	—

Substitute Part Grouping Explanation

Substitution of the NTP2955 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Criteria:

FET Type: P-Channel
Drain to Source Voltage (Vdss): 60V minimum
Package / Case: TO-220-3 (Through Hole)
Technology: MOSFET (Metal Oxide)
Mounting Type: Through Hole

Performance Compatibility Criteria:

Current - Continuous Drain (Id): Must equal or exceed 2.4A
Rds On (Max): Must equal or be lower than 196 mOhm
Vgs(th) (Max): Must equal or be lower than 4V
Gate Charge (Qg): Must equal or be lower than 14 nC
Input Capacitance (Ciss): Must equal or be lower than 700 pF
Operating Temperature Range: Must encompass −55°C to 175°C

The STP10P6F6 from STMicroelectronics meets all mandatory matching criteria and exceeds performance specifications across all measurable parameters, qualifying it as a direct substitute for the NTP2955.

Parameter Comparison

Parameter	NTP2955 (onsemi)	STP10P6F6 (STMicroelectronics)	Unit
FET Type	P-Channel	P-Channel	—
Drain to Source Voltage (Vdss)	60	60	V
Current - Continuous Drain (Id) @ 25°C	2.4 (Ta)	10 (Tc)	A
Rds On (Max) @ Id, Vgs	196 @ 12A, 10V	160 @ 5A, 10V	mOhm
Vgs(th) (Max) @ Id	4 @ 250µA	4 @ 250µA	V
Gate Charge (Qg) (Max) @ Vgs	14 @ 10V	6.4 @ 10V	nC
Vgs (Max)	±20	±20	V
Input Capacitance (Ciss) (Max) @ Vds	700 @ 25V	340 @ 48V	pF
Power Dissipation (Max)	2.4 (Ta), 62.5 (Tc)	30 (Tc)	W
Operating Temperature	−55 to 175	175 (TJ)	°C
Mounting Type	Through Hole	Through Hole	—
Package / Case	TO-220-3	TO-220-3	—
Technology	MOSFET (Metal Oxide)	MOSFET (Metal Oxide)	—

Engineering Selection Recommendations

NTP2955 (onsemi): The NTP2955 is classified as Obsolete. RoHS non-compliant status indicates this device does not meet current environmental and hazardous substance restrictions. New designs should not incorporate this component.

STP10P6F6 (STMicroelectronics): The STP10P6F6 is classified as Obsolete but carries ROHS3 Compliant certification, indicating conformance to current environmental standards. This device exceeds all electrical performance parameters of the NTP2955 while maintaining identical voltage ratings and package form factor. The STP10P6F6 is suitable for direct substitution in legacy system repairs and maintenance where the NTP2955 is no longer available.

Both devices are classified as Obsolete and carry REACH Unaffected status. Selection between these components should be based on availability and compliance requirements specific to the application context.

Frequently Asked Questions (FAQ)

Q: Can the STP10P6F6 directly replace the NTP2955 in existing circuits?

A: Yes. Both devices share identical voltage ratings (60V Vdss), gate threshold voltage (4V @ 250µA), maximum gate voltage (±20V), and TO-220-3 package configuration. The STP10P6F6 provides superior performance across all electrical parameters, including lower on-resistance, reduced gate charge, and lower input capacitance.

Q: What are the key differences between these two devices?

A: The STP10P6F6 provides higher continuous drain current (10A vs. 2.4A), lower on-resistance (160 mOhm vs. 196 mOhm), lower gate charge (6.4 nC vs. 14 nC), and lower input capacitance (340 pF vs. 700 pF). The STP10P6F6 also carries ROHS3 compliance, whereas the NTP2955 is RoHS non-compliant.

Q: Are there any package or mounting considerations?

A: Both devices use identical Through Hole TO-220-3 packaging. No modifications to PCB layout, mounting hardware, or thermal management interfaces are required for substitution.

Q: Why is the NTP2955 listed as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued production and support for this component. Existing inventory may be available through authorized distributors, but long-term availability is not guaranteed.

Q: What compliance certifications apply to these devices?

A: Both devices carry REACH Unaffected and EAR99 ECCN classifications. The STP10P6F6 is ROHS3 Compliant, while the NTP2955 is RoHS non-compliant. Both devices have Moisture Sensitivity Level 1 (Unlimited).

Q: Can the STP10P6F6 be used in applications requiring lower current ratings?

A: Yes. The STP10P6F6 is rated for 10A continuous drain current, which exceeds the NTP2955 specification of 2.4A. Applications requiring only 2.4A operation will function correctly with the STP10P6F6, as the device will operate well within its rated specifications.

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