STP19NF20 Equivalent & Substitute Parts

Part Overview

The STP19NF20 is an N-Channel MOSFET manufactured by STMicroelectronics, rated for 200V drain-to-source voltage with 15A continuous drain current at 25°C. The device is housed in a TO-220-3 through-hole package and is designed for general-purpose switching and amplification applications. This part is currently Active in product status with full RoHS3 compliance and unlimited moisture sensitivity rating.

Equivalent and substitute parts are identified based on matching or exceeding critical electrical parameters within the same package form factor. Substitutes must maintain compatibility with the 200V voltage class while accommodating variations in current rating, on-resistance, and thermal characteristics.

Key Parameters

Parameter	STP19NF20 Value	Unit	Substitution Relevance
Drain-to-Source Voltage (Vdss)	200	V	Critical - must match or exceed
Continuous Drain Current (Id) @ 25°C	15	A (Tc)	Critical - substitute must meet or exceed
On-Resistance (Rds On) @ Id, Vgs	160 mOhm @ 7.5A, 10V	mOhm	Important - affects thermal performance
Gate Threshold Voltage (Vgs(th)) @ Id	4	V @ 250µA	Important - affects gate drive requirements
Power Dissipation (Max)	90	W (Tc)	Important - thermal design consideration
Operating Temperature Range	-55 to 150	°C (TJ)	Important - application environment compatibility
Package Type	TO-220-3	-	Critical - physical and electrical compatibility
Mounting Type	Through Hole	-	Critical - PCB assembly compatibility

Substitute Part Grouping Explanation

Substitution logic for the STP19NF20 is based on the following criteria:

Voltage Class Matching: All substitute parts must maintain the 200V Vdss rating to ensure safe operation within the same circuit topology. Parts with lower voltage ratings (such as IRF530NPBF at 100V) are not suitable for direct substitution.

Current Rating Compatibility: Substitute parts must support a continuous drain current equal to or greater than 15A at 25°C. This ensures the substitute can handle the same or higher load conditions without thermal stress.

Package and Mounting: All substitutes must use the TO-220-3 through-hole package to maintain mechanical and electrical compatibility with existing PCB layouts and thermal management solutions.

Gate Drive Voltage: Substitute parts must operate with standard 10V gate drive voltage, consistent with the STP19NF20 specification.

Thermal and Compliance: Substitute parts must maintain RoHS3 compliance and operate within acceptable temperature ranges for the intended application environment.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On (mOhm)	Vgs(th) (V)	Power Dissipation (W)	Tj Range (°C)	Package	Product Status
STP19NF20	STMicroelectronics	200	15	160 @ 7.5A, 10V	4 @ 250µA	90	-55 to 150	TO-220-3	Active
IRF200B211	Infineon Technologies	200	12	170 @ 7.2A, 10V	4.9 @ 50µA	80	-55 to 175	TO-220-3	Active
IRF640NPBF	Infineon Technologies	200	18	150 @ 11A, 10V	4 @ 250µA	150	-55 to 175	TO-220-3	Not For New Designs
IRF640PBF	Vishay Siliconix	200	18	180 @ 11A, 10V	4 @ 250µA	125	-55 to 150	TO-220-3	Active
IRFB4620PBF	Infineon Technologies	200	25	72.5 @ 15A, 10V	5 @ 100µA	144	-55 to 175	TO-220-3	Active
PHP20NQ20T,127	NXP Semiconductors	200	20	130 @ 10A, 10V	4 @ 1mA	150	-55 to 175	TO-220-3	Active
PJP18N20_T0_00001	Panjit International Inc.	200	18	160 @ 9A, 10V	3 @ 250µA	89	-55 to 150	TO-220-3	Active

Engineering Selection Recommendations

Primary Substitutes (Active Status, Full Compliance):

IRF640PBF, IRFB4620PBF, PHP20NQ20T,127, and PJP18N20_T0_00001 are all Active products with RoHS3 compliance. These parts exceed the 15A current requirement and maintain the 200V voltage rating. IRF640PBF and PJP18N20_T0_00001 operate within the same -55°C to 150°C temperature range as the STP19NF20. IRFB4620PBF and PHP20NQ20T,127 extend the upper operating temperature to 175°C, providing enhanced thermal margin.

Secondary Substitute (Not For New Designs):

IRF640NPBF meets all electrical requirements but carries a "Not For New Designs" status. This part should be used only for legacy system maintenance or replacement applications where design continuity is required.

Limited Substitution (Current Rating Below Requirement):

IRF200B211 provides a 12A continuous drain current, which falls below the STP19NF20 specification of 15A. This part is suitable only for applications where the actual load current does not exceed 12A, despite the original design specification.

Compliance Considerations:

IRF640PBF carries REACH Affected status, whereas all other substitutes maintain REACH Unaffected status. This distinction may be relevant for applications subject to REACH regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can IRF200B211 be used as a direct replacement for STP19NF20?

A: IRF200B211 is not a direct replacement. While it matches the 200V voltage rating and TO-220-3 package, its 12A continuous drain current rating is below the STP19NF20 specification of 15A. Use IRF200B211 only if the actual circuit load current does not exceed 12A.

Q: What is the difference between IRF640NPBF and IRF640PBF?

A: Both parts share identical electrical specifications (200V, 18A, 150 mOhm on-resistance). IRF640NPBF is manufactured by Infineon Technologies and carries "Not For New Designs" status. IRF640PBF is manufactured by Vishay Siliconix and is Active. For new designs, IRF640PBF is the preferred choice.

Q: Why does IRFB4620PBF have lower on-resistance than the STP19NF20?

A: IRFB4620PBF is rated for 25A continuous drain current compared to the STP19NF20 at 15A. The lower on-resistance (72.5 mOhm versus 160 mOhm) is a direct result of the larger die size required to support higher current. This results in reduced power dissipation and improved thermal performance in applications requiring higher current capacity.

Q: Is PHP20NQ20T,127 suitable for high-temperature applications?

A: Yes. PHP20NQ20T,127 operates across -55°C to 175°C, extending 25°C above the STP19NF20 upper limit of 150°C. This part is suitable for applications requiring enhanced thermal margin or operation in elevated ambient temperature environments.

Q: Can I use PJP18N20_T0_00001 as a pin-compatible replacement?

A: Yes. PJP18N20_T0_00001 uses the TO-220-3 package with identical pin configuration to the STP19NF20. It supports 18A continuous drain current at 200V and maintains the same gate threshold voltage specification, ensuring compatibility with existing gate drive circuits.

Q: What is the impact of higher gate charge on circuit design?

A: Gate charge (Qg) affects the speed and energy required to switch the MOSFET. IRF640NPBF and IRF640PBF have significantly higher gate charge (67 nC and 70 nC respectively) compared to the STP19NF20 (24 nC). This requires higher gate drive current or longer switching times. For applications with tight switching frequency requirements, lower gate charge parts such as IRFB4620PBF (38 nC) or PHP20NQ20T,127 (65 nC) may be more suitable.

Q: Are all substitute parts RoHS3 compliant?

A: All listed substitute parts are RoHS3 compliant. However, IRF640PBF carries REACH Affected status, while all other substitutes maintain REACH Unaffected status. Verify REACH compliance requirements for your specific application jurisdiction before final part selection.

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