STW70N60DM2 Equivalent & Substitute Parts

Part Overview

The STW70N60DM2 is an N-channel MOSFET manufactured by STMicroelectronics, rated for 600 V drain-to-source voltage with 66 A continuous drain current and 446 W maximum power dissipation. The device features a TO-247-3 through-hole package and operates across the temperature range of -55°C to 150°C. This part is classified as Active product status and is RoHS3 compliant.

Substitute parts are necessary when the primary part experiences extended lead times, inventory constraints, or when design requirements permit operation with alternative devices that maintain electrical and mechanical compatibility within specified parameter tolerances.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	600	V
Continuous Drain Current (Id) @ 25°C	66	A (Tc)
On-State Resistance (Rds On Max) @ 33A, 10V	42	mOhm
Gate Threshold Voltage (Vgs(th) Max) @ 250µA	5	V
Gate Charge (Qg Max) @ 10V	121	nC
Input Capacitance (Ciss Max) @ 100V	5508	pF
Power Dissipation (Max)	446	W (Tc)
Operating Temperature Range	-55 to 150	°C (TJ)
Package Type	TO-247-3	Through Hole
Drive Voltage (Max Rds On)	10	V

Substitute Part Grouping Explanation

Substitution eligibility for the STW70N60DM2 is determined by the following critical parameters:

Mandatory Compatibility Parameters:

Drain to Source Voltage (Vdss): 600 V minimum
Continuous Drain Current (Id): 66 A minimum at 25°C
Package Type: TO-247-3 through-hole configuration
Operating Temperature Range: -55°C to 150°C minimum
On-State Resistance (Rds On): 42 mOhm maximum at specified conditions

Allowable Variation Parameters:

Gate Charge (Qg): Values up to 347 nC are acceptable
Input Capacitance (Ciss): Values up to 13600 pF are acceptable
Power Dissipation: Values equal to or exceeding 446 W are acceptable
Gate Threshold Voltage (Vgs(th)): Values between 3.5 V and 5 V are acceptable

Substitute parts must maintain electrical performance within the application's design margins while meeting or exceeding the primary device specifications in critical parameters. Parts with higher voltage ratings, current ratings, or power dissipation capabilities are functionally compatible when other parameters remain within acceptable ranges.

Parameter Comparison

Parameter	STW70N60DM2	STW72N60DM2AG	APT77N60BC6	FCH041N60F-F085	IXKH70N60C5	IXTH80N65X2
Manufacturer	STMicroelectronics	STMicroelectronics	Microchip Technology	onsemi	IXYS	IXYS
Vdss (V)	600	600	600	600	600	650
Id @ 25°C (A Tc)	66	66	77	76	70	80
Rds On Max (mOhm)	42 @ 33A, 10V	42 @ 33A, 10V	41 @ 44.4A, 10V	41 @ 38A, 10V	45 @ 44A, 10V	40 @ 40A, 10V
Vgs(th) Max (V)	5 @ 250µA	5 @ 250µA	3.6 @ 2.96mA	5 @ 250µA	3.5 @ 3mA	4.5 @ 4mA
Qg Max (nC)	121 @ 10V	121 @ 10V	260 @ 10V	347 @ 10V	190 @ 10V	144 @ 10V
Ciss Max (pF)	5508 @ 100V	5508 @ 100V	13600 @ 25V	10900 @ 25V	6800 @ 100V	7753 @ 25V
Power Dissipation Max (W Tc)	446	446	481	595	Not specified	890
Operating Temperature (°C)	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150
Package	TO-247-3	TO-247-3	TO-247 [B]	TO-247-3	TO-247AD	TO-247 (IXTH)
Product Status	Active	Active	Active	Not For New Designs	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

STW72N60DM2AG (STMicroelectronics)

This part is a parametric equivalent to the STW70N60DM2, offering identical electrical specifications including 600 V Vdss, 66 A continuous drain current, 42 mOhm Rds On, and 121 nC gate charge. Both devices share the same MDmesh™ DM2 series technology and TO-247-3 package. The STW72N60DM2AG carries Automotive grade qualification (AEC-Q101) and Active product status, with higher inventory availability (8889 pcs). This part is the primary equivalent for direct replacement.

APT77N60BC6 (Microchip Technology)

This device provides enhanced performance with 77 A continuous drain current and 481 W power dissipation, exceeding the STW70N60DM2 specifications. The 600 V Vdss rating and TO-247 package maintain compatibility. The lower gate threshold voltage (3.6 V) and higher gate charge (260 nC) represent design trade-offs. Active product status and RoHS3 compliance are confirmed. This part is suitable for applications requiring higher current capacity within the same voltage class.

FCH041N60F-F085 (onsemi)

This SuperFET® II device delivers 76 A continuous drain current and 595 W power dissipation. The 600 V Vdss and TO-247-3 package provide electrical and mechanical compatibility. The part carries Automotive grade qualification (AEC-Q101) and RoHS3 compliance. However, the product status is classified as "Not For New Designs," limiting its use to legacy system support or maintenance applications only.

IXKH70N60C5 (IXYS)

This CoolMOS™ device matches the STW70N60DM2 with 70 A continuous drain current and 600 V Vdss. The TO-247AD package variant maintains through-hole compatibility. The lower gate threshold voltage (3.5 V) and higher gate charge (190 nC) reflect alternative design characteristics. Active product status and RoHS3 compliance are confirmed. This part is suitable for applications where IXYS device qualification is required.

IXTH80N65X2 (IXYS)

This Ultra X2 series device provides enhanced specifications with 80 A continuous drain current, 650 V Vdss, and 890 W power dissipation. The higher voltage rating and current capacity exceed the STW70N60DM2 requirements. The TO-247 package maintains mechanical compatibility. The lower on-state resistance (40 mOhm) and higher maximum gate voltage (±30 V) represent performance improvements. Active product status and RoHS3 compliance are confirmed. This part is suitable for applications requiring higher voltage margin or increased power handling.

Frequently Asked Questions (FAQ)

Q: Can the STW72N60DM2AG be used as a direct replacement for the STW70N60DM2?

A: Yes. The STW72N60DM2AG is a parametric equivalent with identical electrical specifications across all critical parameters: 600 V Vdss, 66 A continuous drain current, 42 mOhm Rds On, and 121 nC gate charge. Both devices use the same MDmesh™ DM2 technology and TO-247-3 package. The STW72N60DM2AG includes Automotive grade qualification (AEC-Q101), making it suitable for applications requiring automotive-level reliability.

Q: What is the difference between the TO-247-3 and TO-247AD packages?

A: Both packages are through-hole configurations with identical pin assignments and mechanical footprints suitable for the same PCB layouts. The TO-247AD designation indicates an IXYS-specific variant of the standard TO-247-3 package. Electrical performance and thermal characteristics remain equivalent for circuit design purposes.

Q: Can I use the APT77N60BC6 in place of the STW70N60DM2?

A: The APT77N60BC6 is electrically compatible with higher performance specifications: 77 A continuous drain current versus 66 A, and 481 W power dissipation versus 446 W. The 600 V Vdss rating matches the primary device. However, the higher gate charge (260 nC versus 121 nC) and lower gate threshold voltage (3.6 V versus 5 V) require verification that the gate drive circuit can accommodate these differences. The part is suitable for applications where higher current capacity is beneficial or required.

Q: Why is the FCH041N60F-F085 marked as "Not For New Designs"?

A: The "Not For New Designs" status indicates that onsemi has designated this part for legacy system support only. While the device remains functionally compatible with the STW70N60DM2 and carries Automotive grade qualification (AEC-Q101), new circuit designs should prioritize parts with Active product status to ensure long-term availability and manufacturer support. This part is appropriate for maintenance, repair, or sustaining production of existing systems.

Q: What are the advantages of the IXTH80N65X2 over the STW70N60DM2?

A: The IXTH80N65X2 provides three key advantages: higher drain-to-source voltage (650 V versus 600 V), higher continuous drain current (80 A versus 66 A), and significantly higher power dissipation capability (890 W versus 446 W). The lower on-state resistance (40 mOhm versus 42 mOhm) reduces conduction losses. These enhancements make the IXTH80N65X2 suitable for applications requiring higher voltage margin, increased current capacity, or improved thermal performance.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed—STW72N60DM2AG, APT77N60BC6, FCH041N60F-F085, IXKH70N60C5, and IXTH80N65X2—are RoHS3 compliant. This ensures compatibility with environmental regulations and procurement requirements for both commercial and automotive applications.

Q: How do gate charge differences affect circuit design?

A: Gate charge (Qg) determines the total charge required to switch the MOSFET from off to on state. The STW70N60DM2 requires 121 nC at 10 V. Substitute parts with higher gate charge (such as FCH041N60F-F085 at 347 nC) require longer switching times or higher gate drive current to achieve the same switching speed. Substitute parts with lower gate charge (such as IXTH80N65X2 at 144 nC) enable faster switching with the same gate drive circuit. Gate drive circuit verification is necessary when substituting parts with significantly different gate charge values.

Q: Can I use a higher voltage-rated device in a 600 V application?

A: Yes. The IXTH80N65X2 with 650 V Vdss rating is suitable for 600 V applications, providing additional voltage margin for transient overvoltage protection. Higher voltage ratings do not compromise performance in lower voltage applications. However, the higher input capacitance (7753 pF versus 5508 pF) may require gate drive circuit adjustment to maintain switching speed.

Q: What inventory considerations apply to these substitute parts?

A: Current inventory levels vary significantly: STW72N60DM2AG (8889 pcs), FCH041N60F-F085 (6690 pcs), IXTH80N65X2 (1824 pcs), IXKH70N60C5 (1316 pcs), and APT77N60BC6 (1100 pcs). Substitute part selection should consider both immediate availability and long-term supply chain stability. Parts with higher inventory levels provide shorter lead times for urgent requirements.

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