AOU7S60 N-Channel MOSFET 600V 7A TO-251-3 Equivalent & Substitute Parts

Part Overview

The AOU7S60 is an N-Channel MOSFET manufactured by Alpha & Omega Semiconductor Inc., rated for 600V drain-to-source voltage with 7A continuous drain current in a TO-251-3 through-hole package. This device is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and procurement continuity. The aMOS™ series component operates across a temperature range of -55°C to 150°C and dissipates up to 83W at the case temperature.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	600	V
Continuous Drain Current (Id) @ 25°C	7	A
On-State Resistance (Rds On) @ 3.5A, 10V	600	mOhm
Gate-Source Threshold Voltage (Vgs(th)) @ 250µA	3.9	V
Gate Charge (Qg) @ 10V	8.2	nC
Power Dissipation (Max)	83	W
Operating Temperature Range	-55 to 150	°C
Package Type	TO-251-3	—
Mounting Type	Through Hole	—

Substitute Part Grouping Explanation

Substitution of the AOU7S60 is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Drain-to-Source Voltage (Vdss): 600V minimum
Continuous Drain Current (Id): 7A or greater
On-State Resistance (Rds On): 600mOhm or lower at specified gate voltage
Package Type: TO-251-3 or equivalent TO-251AA through-hole configuration
FET Type: N-Channel MOSFET technology
Operating Temperature Range: -55°C to 150°C minimum

Secondary Compatibility Factors:

Gate-Source Threshold Voltage (Vgs(th)): 3.9V to 4V range
Power Dissipation capability: 70W or greater
RoHS3 compliance and MSL Level 1 rating

The substitute parts listed below meet or exceed the primary substitution criteria, ensuring functional and thermal compatibility in applications originally designed for the AOU7S60.

Parameter Comparison

Parameter	AOU7S60	SIHU7N60E-E3	STU10N60M2	STU10NM60N	TSM70N600CH C5G
Manufacturer	Alpha & Omega Semiconductor	Vishay Siliconix	STMicroelectronics	STMicroelectronics	Taiwan Semiconductor Corporation
Vdss (V)	600	600	600	600	700
Id @ 25°C (A)	7	7	7.5	10	8
Rds On @ 10V (mOhm)	600 @ 3.5A	600 @ 3.5A	600 @ 3A	550 @ 4A	600 @ 4A
Vgs(th) @ 250µA (V)	3.9	4	4	4	4
Gate Charge Qg @ 10V (nC)	8.2	40	13.5	19	12.6
Power Dissipation (W)	83	78	85	70	83
Operating Temperature (°C)	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150
Package	TO-251-3	TO-251AA	TO-251 (IPAK)	TO-251 (IPAK)	TO-251 (IPAK)
Product Status	Obsolete	Active	Obsolete	Active	Obsolete
RoHS3 Compliance	Yes	Yes	Yes	Yes	Yes

Engineering Selection Recommendations

Primary Recommendation: STU10NM60N

The STU10NM60N from STMicroelectronics is the preferred substitute for the AOU7S60. This device maintains active product status, ensuring long-term availability and supply chain stability. It exceeds the original specifications with 10A continuous drain current versus 7A, while maintaining 600V Vdss rating and TO-251 (IPAK) package compatibility. The STU10NM60N demonstrates improved on-state resistance performance (550mOhm at 4A) and operates within the identical temperature range. RoHS3 compliance and MSL Level 1 rating confirm environmental and handling compatibility. Current inventory of 28,650 units supports immediate procurement requirements.

Secondary Recommendation: SIHU7N60E-E3

The SIHU7N60E-E3 from Vishay Siliconix provides a direct electrical equivalent with matching 7A continuous drain current and 600mOhm on-state resistance. This device maintains active product status and is packaged in TO-251AA, which is mechanically compatible with the original TO-251-3 configuration. The primary consideration is the elevated gate charge specification (40nC versus 8.2nC), which may impact switching speed in gate-drive-sensitive applications. RoHS3 compliance and 876 units in stock support design transitions.

Alternative Consideration: STU10N60M2

The STU10N60M2 from STMicroelectronics offers 7.5A continuous drain current with matching electrical characteristics. However, this device is classified as obsolete, limiting its suitability for new designs requiring long-term component availability. It remains viable for legacy system maintenance where existing inventory is available.

Higher Voltage Option: TSM70N600CH C5G

The TSM70N600CH C5G from Taiwan Semiconductor Corporation provides 700V Vdss rating with 8A continuous drain current. This device is suitable for applications requiring enhanced voltage margin but is classified as obsolete. The elevated gate charge (12.6nC) and input capacitance (743pF) represent performance trade-offs compared to the primary recommendation.

Frequently Asked Questions (FAQ)

Q: Can the STU10NM60N directly replace the AOU7S60 without circuit modifications?

A: Yes. The STU10NM60N meets all primary substitution criteria: 600V Vdss, 10A continuous drain current (exceeding the 7A requirement), TO-251 package compatibility, and identical operating temperature range. The improved on-state resistance (550mOhm) and active product status make this a direct functional replacement. No circuit modifications are required.

Q: What is the significance of the gate charge difference between the AOU7S60 (8.2nC) and SIHU7N60E-E3 (40nC)?

A: Gate charge directly affects switching speed and gate drive requirements. The SIHU7N60E-E3 requires approximately 5 times more charge to switch, resulting in slower switching transitions and increased gate drive power dissipation. In applications with fixed gate drive circuits, this may reduce switching frequency capability. Verify gate driver specifications before selection.

Q: Are all substitute parts compatible with the original TO-251-3 footprint?

A: Yes. All substitute parts use TO-251-3, TO-251AA, or TO-251 (IPAK) packaging, which share identical lead spacing and through-hole mounting dimensions. Mechanical compatibility is confirmed across all listed substitutes.

Q: Why is the STU10NM60N recommended over the SIHU7N60E-E3 despite identical current ratings?

A: The STU10NM60N offers superior on-state resistance (550mOhm versus 600mOhm), lower gate charge (19nC versus 40nC), and active product status ensuring long-term availability. These performance advantages and supply chain stability justify the primary recommendation, despite the SIHU7N60E-E3 providing a closer electrical match to the original device.

Q: Can the TSM70N600CH C5G be used in applications designed for 600V operation?

A: Yes. The TSM70N600CH C5G is rated for 700V Vdss, which exceeds the 600V requirement. This provides additional voltage margin and is electrically compatible. However, the elevated gate charge and input capacitance may affect switching characteristics. Verify gate driver and thermal management compatibility before selection.

Q: What is the impact of the STU10NM60N's higher current rating (10A versus 7A) on thermal design?

A: The STU10NM60N's 10A rating indicates higher current capability but does not mandate increased current draw in the application. Thermal dissipation depends on actual operating current and duty cycle. The lower on-state resistance (550mOhm) reduces I²R losses at equivalent current levels, potentially improving thermal performance compared to the original AOU7S60.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry RoHS3 compliance certification and MSL Level 1 (Unlimited) moisture sensitivity rating, matching the environmental and handling requirements of the original AOU7S60.

Q: Which substitute part offers the best long-term availability?

A: The STU10NM60N from STMicroelectronics is classified as active product status with 28,650 units in current inventory. This ensures sustained availability for ongoing procurement and design support. The SIHU7N60E-E3 also maintains active status with 876 units available. Both STU10N60M2 and TSM70N600CH C5G are obsolete and should not be selected for new designs requiring extended product lifecycle support.

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