AON7536 N-Channel MOSFET 30V 24A/68A Equivalent & Substitute Parts

Part Overview

The AON7536 is an N-Channel MOSFET manufactured by Alpha & Omega Semiconductor Inc., rated for 30V drain-to-source voltage with continuous drain current of 24A (Ta) and 68A (Tc). The device is housed in an 8-DFN-EP (3.3x3.3) surface mount package and is part of the AlphaMOS series. The AON7536 is classified as obsolete, making identification of equivalent and substitute parts necessary for ongoing design support, production continuity, and component sourcing.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	30	V
Continuous Drain Current @ 25°C (Ta)	24	A
Continuous Drain Current @ 25°C (Tc)	68	A
On-Resistance (Rds On) @ 20A, 10V	4.2	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	2.2	V
Gate Charge (Qg) @ 10V	40	nC
Input Capacitance (Ciss) @ 15V	2350	pF
Power Dissipation (Ta)	4.1	W
Power Dissipation (Tc)	32.5	W
Operating Temperature Range	-55 to 150	°C
Package Type	8-DFN-EP (3.3x3.3)	Surface Mount
Moisture Sensitivity Level (MSL)	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution of the AON7536 is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

Drain-to-Source Voltage (Vdss): Must equal or exceed 30V
Continuous Drain Current: Must support the application's current requirements at the specified temperature condition (Ta or Tc)
On-Resistance (Rds On): Lower values indicate improved performance; values within acceptable range ensure thermal and efficiency compatibility
Gate Threshold Voltage (Vgs(th)): Must be compatible with gate drive circuitry
Gate Charge (Qg): Affects switching speed and gate drive requirements
Input Capacitance (Ciss): Influences gate drive circuit design
Operating Temperature Range: Must encompass -55°C to 150°C

Mechanical Compatibility Criteria:

Package Type: Surface mount packages with compatible footprints and pin configurations
Mounting Type: Surface mount only
Moisture Sensitivity Level: MSL 1 (Unlimited) preferred for reliability

Regulatory & Compliance Criteria:

REACH Status: REACH Unaffected
RoHS Compliance: ROHS3 Compliant preferred
ECCN Classification: EAR99

Substitute parts are grouped based on whether they maintain these electrical and mechanical parameters within acceptable engineering tolerances for the intended application.

Parameter Comparison

Parameter	AON7536	CSD17577Q3A	CSD17577Q3AT	DMN3008SFG-13	DMN3008SFG-7	FDMC7678	NTTFS4C06NTAG
Manufacturer	Alpha & Omega	Texas Instruments	Texas Instruments	Diodes Inc.	Diodes Inc.	onsemi	onsemi
Vdss (V)	30	30	30	30	30	30	30
Id @ 25°C Ta (A)	24	35	35	17.6	17.6	17.5	11
Id @ 25°C Tc (A)	68	-	-	-	-	19.5	67
Rds On @ 10V (mOhm)	4.2 @ 20A	4.8 @ 16A	4.8 @ 16A	4.6 @ 13.5A	4.6 @ 13.5A	5.3 @ 17.5A	4.2 @ 30A
Vgs(th) @ 250µA (V)	2.2	1.8	1.8	2.3	2.3	3.0	2.2
Qg @ 10V (nC)	40	35	35	86	86	39	36
Ciss @ 15V (pF)	2350	2310	2310	3690	3690	2410	3366
Power Dissipation Ta (W)	4.1	2.8	2.8	0.9	0.9	2.3	0.81
Power Dissipation Tc (W)	32.5	53	53	-	-	31	31
Operating Temperature (°C)	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150
Package	8-DFN-EP (3.3x3.3)	8-VSONP (3x3.3)	8-VSONP (3x3.3)	PowerDI3333-8	PowerDI3333-8	8-MLP (3.3x3.3)	8-WDFN (3.3x3.3)
Product Status	Obsolete	Active	Active	Active	Active	Obsolete	Active
RoHS Status	-	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Substitutes (Active Product Status):

The CSD17577Q3A and CSD17577Q3AT from Texas Instruments are the preferred primary substitutes for the AON7536. Both devices maintain the 30V Vdss rating and provide superior continuous drain current (35A Ta), exceeding the AON7536's 24A specification. These NexFET™ series MOSFETs are ROHS3 compliant and carry active product status, ensuring long-term availability and supply chain stability. The CSD17577Q3A is supplied in Cut Tape (CT) & Digi-Reel® packaging, while the CSD17577Q3AT is supplied in Tape & Reel (TR) format. Both variants are electrically identical and differ only in packaging configuration.

The NTTFS4C06NTAG from onsemi is a secondary substitute option. It maintains 30V Vdss and provides 67A continuous drain current at Tc, closely matching the AON7536's thermal performance. The NTTFS4C06NTAG is ROHS3 compliant and carries active product status. However, the continuous drain current at Ta (11A) is lower than the AON7536 (24A), making this device suitable only for applications where thermal management ensures operation near Tc conditions.

Secondary Substitutes (Reduced Current Capability):

The DMN3008SFG-13 and DMN3008SFG-7 from Diodes Incorporated are functionally equivalent devices with identical electrical specifications. Both maintain 30V Vdss and provide 17.6A continuous drain current at Ta. These devices are ROHS3 compliant and carry active product status. The DMN3008SFG-7 offers significantly higher inventory availability (101,300 pcs) compared to DMN3008SFG-13 (2,900 pcs). These substitutes are suitable for applications where the required continuous drain current does not exceed 17.6A.

The FDMC7678 from onsemi is an obsolete device with specifications similar to the DMN3008 series (17.5A Ta, 19.5A Tc). While ROHS3 compliant, its obsolete status limits its suitability for new designs or long-term production requirements.

Compliance & Regulatory Considerations:

All substitute parts listed maintain REACH Unaffected status and EAR99 ECCN classification, consistent with the AON7536. All active substitutes are ROHS3 compliant. All devices maintain MSL 1 (Unlimited) moisture sensitivity level, ensuring equivalent handling and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can the CSD17577Q3A directly replace the AON7536 in existing designs?

A: The CSD17577Q3A maintains electrical compatibility across all critical parameters: 30V Vdss, superior continuous drain current (35A vs. 24A), comparable on-resistance (4.8 mOhm vs. 4.2 mOhm), and identical operating temperature range (-55°C to 150°C). However, the package footprint differs: CSD17577Q3A uses 8-VSONP (3x3.3) while AON7536 uses 8-DFN-EP (3.3x3.3). PCB layout verification is required to confirm mechanical compatibility, though both packages are 3.3x3.3mm surface mount formats.

Q: What is the difference between CSD17577Q3A and CSD17577Q3AT?

A: Both devices are electrically and functionally identical. The difference is packaging format only: CSD17577Q3A is supplied in Cut Tape (CT) & Digi-Reel® format, while CSD17577Q3AT is supplied in Tape & Reel (TR) format. Selection depends on assembly line requirements and component handling procedures.

Q: Why is the NTTFS4C06NTAG listed as a substitute if its Ta current (11A) is lower than the AON7536 (24A)?

A: The NTTFS4C06NTAG provides 67A continuous drain current at Tc, closely matching the AON7536's 68A Tc specification. This device is suitable for applications where thermal management ensures the junction temperature remains elevated, allowing operation near Tc conditions. For applications requiring sustained 24A operation at ambient temperature (Ta), this device is not appropriate.

Q: Are all substitute parts ROHS3 compliant?

A: All active substitute parts (CSD17577Q3A, CSD17577Q3AT, DMN3008SFG-13, DMN3008SFG-7, and NTTFS4C06NTAG) are ROHS3 compliant. The FDMC7678 is also ROHS3 compliant but carries obsolete product status. The original AON7536 does not specify RoHS status in the provided data.

Q: What are the key electrical parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: (1) Drain-to-Source Voltage (Vdss) equal to or exceeding 30V, (2) Continuous Drain Current meeting or exceeding application requirements at the relevant temperature condition (Ta or Tc), (3) On-Resistance (Rds On) within acceptable range for thermal and efficiency performance, (4) Gate Threshold Voltage (Vgs(th)) compatible with gate drive circuitry, (5) Operating Temperature Range encompassing -55°C to 150°C, and (6) Moisture Sensitivity Level MSL 1 (Unlimited).

Q: Can the DMN3008SFG series be used in high-current applications requiring 24A continuous drain current?

A: No. The DMN3008SFG-13 and DMN3008SFG-7 are rated for 17.6A continuous drain current at Ta, which is below the AON7536's 24A specification. These devices are suitable only for applications where the required continuous drain current does not exceed 17.6A. Using these devices in 24A applications would result in thermal stress and potential device failure.

Q: What is the significance of the different package types among substitute parts?

A: Package type affects PCB layout, thermal management, and assembly compatibility. The AON7536 uses 8-DFN-EP (3.3x3.3), while substitutes use 8-VSONP (3x3.3), PowerDI3333-8, 8-MLP (3.3x3.3), or 8-WDFN (3.3x3.3). Although most packages share the 3.3x3.3mm footprint dimension, pin configurations and thermal pad designs differ. PCB layout and thermal analysis must be performed to confirm mechanical and thermal compatibility before design implementation.

Q: Why is the AON7536 classified as obsolete?

A: The AON7536 is listed as obsolete in the provided data. Obsolete status indicates the manufacturer has discontinued production and support. This necessitates identification of active substitute parts to ensure design continuity, production support, and long-term component availability.

Q: Are all substitute parts available in equivalent packaging options?

A: No. The CSD17577Q3A and CSD17577Q3AT are available in different packaging formats (CT & Digi-Reel® vs. Tape & Reel), but both use the 8-VSONP package. The DMN3008SFG series uses PowerDI3333-8 packaging. The FDMC7678 uses 8-MLP packaging. The NTTFS4C06NTAG uses 8-WDFN packaging. Each substitute requires individual PCB layout verification to confirm compatibility with the original AON7536 design.

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