IXTP16N50P N-Channel 500V 16A MOSFET Equivalent & Substitute Parts

Part Overview

The IXTP16N50P is an N-Channel MOSFET manufactured by IXYS, rated for 500V drain-to-source voltage and 16A continuous drain current at 25°C. This device is housed in a TO-220-3 through-hole package and is designed for high-voltage switching applications requiring 300W maximum power dissipation. The part is currently Active in product status with 1655 units in stock.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when supply chain constraints occur, or when design flexibility is required across multiple manufacturers while maintaining electrical and mechanical compatibility within specified parameter ranges.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	500	V
Continuous Drain Current (Id) @ 25°C	16	A
Power Dissipation (Max)	300	W
Rds On (Max) @ 10V	400	mOhm
Gate Charge (Qg) @ 10V	43	nC
Operating Temperature Range	-55 to 150	°C
Package Type	TO-220-3	—
Mounting Type	Through Hole	—

Substitute Part Grouping Explanation

Substitution of the IXTP16N50P is determined by the following critical parameters:

Mandatory Matching Criteria:

Drain-to-Source Voltage (Vdss): 500V minimum
Package Type: TO-220-3 through-hole configuration
FET Type: N-Channel MOSFET
Technology: Metal Oxide Semiconductor (MOSFET)
Operating Temperature Range: -55°C to 150°C minimum
RoHS3 Compliance and REACH Unaffected status

Performance Parameters for Compatibility:

Continuous Drain Current (Id): 16A or greater at 25°C
Power Dissipation: 220W or greater
Rds On (Max) @ 10V: 400mOhm or lower
Gate Charge (Qg): Electrical characteristic for switching performance
Input Capacitance (Ciss): Electrical characteristic affecting gate drive requirements

Substitute parts are grouped by their ability to meet or exceed the electrical specifications of the main part while maintaining identical mechanical mounting and environmental compliance.

Parameter Comparison

Parameter	IXTP16N50P	IRFB17N50LPBF	STP15NK50Z	STP14NK50Z	STP20NK50Z	STP11NM50N	STP14NM50N
Manufacturer	IXYS	Vishay Siliconix	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Vdss (V)	500	500	500	500	500	500	500
Id @ 25°C (A)	16	16	14	14	17	8.5	12
Power Dissipation (W)	300	220	160	150	190	70	90
Rds On @ 10V (mOhm)	400	320	340	380	270	470	320
Gate Charge @ 10V (nC)	43	130	106	92	119	19	27
Ciss @ 25V (pF)	2250	2760	2260	2000	2600	547	816
Operating Temp Range (°C)	-55 to 150	-55 to 150	-50 to 150	-55 to 150	-50 to 150	-55 to 150	-55 to 150
Package	TO-220-3	TO-220AB	TO-220-3	TO-220-3	TO-220-3	TO-220-3	TO-220-3
Product Status	Active	Active	Active	Active	Active	Obsolete	Active
RoHS3 Compliant	Yes	Yes	Yes	Yes	Yes	Yes	Yes

Engineering Selection Recommendations

Primary Substitute: IRFB17N50LPBF

The IRFB17N50LPBF from Vishay Siliconix is the closest electrical equivalent to the IXTP16N50P. Both devices share identical Vdss (500V) and Id (16A) ratings. The IRFB17N50LPBF exhibits superior on-resistance (320mOhm versus 400mOhm), resulting in lower conduction losses. This part is Active in product status with 6143 units in stock. The primary trade-off is reduced power dissipation capability (220W versus 300W), which is acceptable for applications not requiring the full thermal headroom of the original part. Both parts are RoHS3 compliant and REACH unaffected.

Secondary Substitutes: STP15NK50Z and STP20NK50Z

The STP15NK50Z and STP20NK50Z from STMicroelectronics (SuperMESH™ series) provide alternative solutions with different current and power ratings. The STP20NK50Z offers higher current capability (17A) and lower on-resistance (270mOhm), making it suitable for applications requiring improved performance margins. The STP15NK50Z provides a mid-range option with 14A current rating and 340mOhm on-resistance. Both are Active products with substantial inventory availability (7247 and 1272 units respectively). Operating temperature range for these parts is -50°C to 150°C, which is acceptable for most applications but does not extend to the -55°C minimum of the original part.

Lower-Performance Alternatives: STP14NK50Z and STP14NM50N

The STP14NK50Z and STP14NM50N are suitable only for applications where the 16A continuous current requirement can be reduced to 14A or 12A respectively. The STP14NK50Z (Active, 20081 units in stock) provides 150W power dissipation with 380mOhm on-resistance. The STP14NM50N (Active, 5953 units in stock) from the MDmesh™ II series offers 90W power dissipation with 320mOhm on-resistance. These parts are appropriate for lower-power switching applications or as design alternatives where current derating is acceptable.

Not Recommended: STP11NM50N

The STP11NM50N is marked as Obsolete and exhibits significantly reduced current capability (8.5A) and power dissipation (70W). This part does not meet the electrical requirements of the IXTP16N50P and should not be selected for new designs or direct substitution.

Frequently Asked Questions (FAQ)

Q: Can the IRFB17N50LPBF directly replace the IXTP16N50P in all applications?

A: The IRFB17N50LPBF is electrically compatible for applications where the 220W power dissipation limit is sufficient. The reduced power rating requires thermal analysis to confirm adequate heat dissipation in the target application. Both parts share identical voltage and current ratings, identical operating temperature range, and compatible TO-220 package configurations. Pinout compatibility must be verified for the specific application circuit.

Q: What is the difference between TO-220-3 and TO-220AB packaging?

A: TO-220-3 and TO-220AB are mechanically compatible through-hole packages with identical lead spacing and mounting hole patterns. Both accommodate standard TO-220 heatsinks. The designations reflect minor variations in lead forming or supplier specifications but do not affect interchangeability for PCB mounting or thermal management purposes.

Q: Why do some substitute parts have lower gate charge specifications?

A: Gate charge (Qg) represents the total charge required to switch the MOSFET from off to on state. Lower gate charge values (such as 19nC in the STP11NM50N versus 43nC in the IXTP16N50P) indicate faster switching characteristics and reduced gate drive power requirements. However, lower gate charge does not indicate superior performance in all applications; it reflects different die design and current rating. Gate charge must be evaluated in the context of the specific gate driver circuit and switching frequency requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all substitute parts listed in this reference are RoHS3 compliant and REACH unaffected, matching the environmental compliance status of the IXTP16N50P. This ensures compatibility with regulatory requirements for electronic equipment in regulated markets.

Q: What does "Product Status: Obsolete" mean for the STP11NM50N?

A: Obsolete status indicates that the manufacturer has discontinued active production and support for this part. While inventory may remain available from distributors, obsolete parts are not recommended for new designs due to uncertain long-term availability and potential supply discontinuation. The STP11NM50N should be selected only when existing designs require replacement of previously installed units.

Q: Can I use the STP20NK50Z if my application requires only 16A?

A: Yes. The STP20NK50Z is rated for 17A continuous current, which exceeds the 16A requirement of the IXTP16N50P. The higher current rating provides design margin and does not create compatibility issues. The STP20NK50Z also offers superior on-resistance (270mOhm), resulting in lower conduction losses and reduced thermal dissipation compared to the original part. This makes it a performance-enhanced substitute for applications where the 190W power dissipation is adequate.

Q: How do I determine which substitute part is best for my application?

A: Selection depends on three primary factors: (1) Required continuous drain current—must equal or exceed 16A; (2) Required power dissipation capability—must equal or exceed the thermal load in your application; (3) Product status and availability—Active products are preferred for new designs. Compare the on-resistance (Rds On) values to estimate conduction losses. Verify gate charge compatibility with your gate driver circuit. Confirm operating temperature range meets your application requirements, noting that STP15NK50Z and STP20NK50Z have -50°C minimum versus -55°C for other parts.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message