STW16NK60Z N-Channel 600V 14A MOSFET Equivalent & Substitute Parts

Part Overview

The STW16NK60Z is an N-Channel 600V 14A MOSFET manufactured by STMicroelectronics in the SuperMESH™ series, housed in a TO-247-3 through-hole package. This device is rated for 190W power dissipation and operates at a maximum junction temperature of 150°C. The part is currently obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new designs requiring similar electrical characteristics.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	600	V
Continuous Drain Current (Id) @ 25°C	14	A
Rds On (Max) @ 7A, 10V	420	mOhm
Gate Threshold Voltage (Vgs(th)) @ 50µA	4.5	V
Gate Charge (Qg) @ 10V	86	nC
Input Capacitance (Ciss) @ 25V	2650	pF
Power Dissipation (Max)	190	W
Operating Temperature (TJ)	150	°C
Package Type	TO-247-3	—
Mounting Type	Through Hole	—

Substitute Part Grouping Explanation

Substitution of the STW16NK60Z is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Drain to Source Voltage (Vdss): 600V minimum
Continuous Drain Current (Id): 14A minimum at 25°C
Package Type: TO-247-3 through-hole configuration
Gate Drive Voltage: 10V nominal
Maximum Gate Voltage (Vgs): ±30V compatible
Mounting Type: Through Hole

Secondary Compatibility Parameters:

Rds On (Max): 420mOhm or lower at rated current and gate voltage
Gate Threshold Voltage (Vgs(th)): 4.5V or lower
Gate Charge (Qg): 86nC or lower
Input Capacitance (Ciss): 2650pF or lower
Power Dissipation: 190W or higher
Operating Temperature: 150°C or higher

Substitute parts meeting these criteria are grouped by voltage rating (600V) and current capability (14A or higher). Parts with higher current ratings, lower on-resistance, or higher power dissipation ratings are direct functional equivalents. Parts with different voltage ratings (800V) are listed as alternatives for applications where higher voltage margin is acceptable.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On Max (mOhm)	Vgs(th) Max (V)	Qg Max (nC)	Ciss Max (pF)	Power Diss (W)	Tj Max (°C)	Package	Status
STW16NK60Z	STMicroelectronics	600	14	420	4.5	86	2650	190	150	TO-247-3	Obsolete
AOK20N60L	Alpha & Omega Semiconductor	600	20	370	4.5	74	3680	417	150	TO-247-3	Obsolete
APT11N80BC3G	Microchip Technology	800	11	450	3.9	60	1585	156	150	TO-247-3	Active
APT15F60B	Microsemi Corporation	600	16	430	5	72	2882	290	150	TO-247-3	Active
APT17F80B	Microchip Technology	800	18	580	5	122	3757	500	150	TO-247-3	Active
APT18M80B	Microchip Technology	800	19	530	5	120	3760	500	150	TO-247-3	Active
IRFP21N60LPBF	Vishay Siliconix	600	21	320	5	150	4000	330	150	TO-247-3	Active
IRFPC50LCPBF	Vishay Siliconix	600	11	600	4	84	2300	190	150	TO-247-3	Active
IRFPC60LCPBF	Vishay Siliconix	600	16	400	4	120	3500	280	150	TO-247-3	Active
IRFPC60PBF	Vishay Siliconix	600	16	400	4	210	3900	280	150	TO-247-3	Active

Engineering Selection Recommendations

Primary Substitutes (600V Rating, Matched Current Capability):

APT15F60B and IRFPC60LCPBF are direct functional equivalents to the STW16NK60Z. Both devices operate at 600V with 16A continuous drain current, matching the voltage class and exceeding the current requirement. APT15F60B is manufactured by Microsemi Corporation and carries Active product status with ROHS3 compliance. IRFPC60LCPBF is manufactured by Vishay Siliconix, also Active status with ROHS3 compliance. Both devices feature comparable on-resistance and gate charge characteristics within acceptable engineering tolerances.

Higher Current Alternatives (600V Rating):

AOK20N60L (Alpha & Omega Semiconductor) and IRFP21N60LPBF (Vishay Siliconix) provide 20A and 21A continuous drain current respectively at 600V. These parts offer superior current handling and lower on-resistance (370mOhm and 320mOhm respectively) compared to the STW16NK60Z. AOK20N60L is Obsolete status; IRFP21N60LPBF is Active status with ROHS3 compliance. Both are suitable for applications requiring higher current margins or lower conduction losses.

Higher Voltage Alternatives (800V Rating):

APT11N80BC3G, APT17F80B, and APT18M80B operate at 800V, providing increased voltage margin for applications subject to transient overvoltage conditions. APT11N80BC3G is rated 11A at 800V (Active status). APT17F80B and APT18M80B are rated 18A and 19A respectively at 800V (both Active status). These parts are suitable only for applications where 800V operation is acceptable and where the higher gate charge and input capacitance do not create circuit design constraints.

Lower Current Alternative:

IRFPC50LCPBF (Vishay Siliconix) is rated 11A at 600V with 190W power dissipation, matching the power rating of the STW16NK60Z. This part is suitable only for applications where 11A continuous current is sufficient.

Compliance and Availability:

All recommended Active status substitutes carry ROHS3 compliance and REACH Unaffected status. Obsolete status parts (AOK20N60L) are available in inventory but subject to supply discontinuation. Active status parts (APT15F60B, IRFPC60LCPBF, IRFP21N60LPBF) are recommended for new designs and long-term production support.

Frequently Asked Questions (FAQ)

Q: Can the STW16NK60Z be directly replaced with any of the listed substitutes?

A: Direct replacement depends on application requirements. APT15F60B and IRFPC60LCPBF are pin-compatible direct replacements with identical 600V/16A ratings and TO-247-3 packaging. Higher current rated parts (AOK20N60L, IRFP21N60LPBF) are compatible but provide excess current capability. Higher voltage rated parts (APT11N80BC3G, APT17F80B, APT18M80B) require circuit validation to confirm 800V operation is acceptable.

Q: What is the primary difference between 600V and 800V rated substitutes?

A: 600V rated substitutes (APT15F60B, IRFPC60LCPBF, IRFP21N60LPBF) match the original voltage class and are suitable for applications with 600V maximum drain-source voltage. 800V rated substitutes (APT11N80BC3G, APT17F80B, APT18M80B) provide higher voltage margin but exhibit higher on-resistance and gate charge, potentially affecting circuit efficiency and switching performance.

Q: Are all substitute parts available in the same TO-247-3 package?

A: All listed substitute parts are housed in TO-247-3 through-hole packages, ensuring mechanical and thermal compatibility with the original STW16NK60Z footprint and mounting requirements.

Q: What is the significance of on-resistance (Rds On) differences between substitutes?

A: On-resistance directly affects conduction losses and heat dissipation. Lower Rds On values (IRFP21N60LPBF at 320mOhm) reduce power loss compared to higher values (IRFPC50LCPBF at 600mOhm). Selection depends on thermal design constraints and efficiency requirements of the application.

Q: Why is product status (Active vs. Obsolete) important for selection?

A: Active status parts are in current production with guaranteed long-term availability and supply continuity. Obsolete status parts (AOK20N60L) have limited remaining inventory and no future production, making them unsuitable for new designs or applications requiring extended production runs.

Q: Can gate charge (Qg) differences affect circuit performance?

A: Gate charge affects gate drive circuit requirements and switching speed. Higher Qg values require greater gate drive current or longer switching times. IRFP21N60LPBF (150nC) has higher gate charge than the STW16NK60Z (86nC), potentially requiring gate driver circuit adjustment. Lower Qg alternatives (APT11N80BC3G at 60nC) enable faster switching but operate at higher voltage rating.

Q: What role does input capacitance (Ciss) play in substitution?

A: Input capacitance affects gate drive circuit impedance and switching transient behavior. Higher Ciss values increase gate drive current requirements and may affect EMI characteristics. IRFP21N60LPBF (4000pF) has significantly higher Ciss than the STW16NK60Z (2650pF), requiring gate driver validation in high-frequency applications.

Q: Are all substitutes RoHS3 compliant?

A: All Active status substitutes (APT15F60B, APT17F80B, APT18M80B, IRFP21N60LPBF, IRFPC50LCPBF, IRFPC60LCPBF, IRFPC60PBF) are ROHS3 compliant. AOK20N60L (Obsolete) is also ROHS3 compliant. IRFPC60 (non-tubed version) is RoHS non-compliant and not recommended for new applications.

Q: What is the maximum junction temperature rating for all substitutes?

A: All listed substitutes operate at a maximum junction temperature of 150°C, matching the STW16NK60Z specification. This ensures thermal design compatibility across all alternatives.

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