AON6566 N-Channel MOSFET 30V 29A Equivalent & Substitute Parts

Part Overview

The AON6566 is an N-Channel MOSFET manufactured by Alpha & Omega Semiconductor Inc., rated for 30V drain-to-source voltage with 29A continuous drain current at 25°C (Ta) and 32A at case temperature (Tc). The device is housed in an 8-DFN (5x6) surface mount package with a maximum power dissipation of 6W (Ta) and 25W (Tc). This part is classified as "Not For New Designs," indicating it has reached end-of-life status. Identifying equivalent and substitute parts is necessary for design continuity, inventory management, and ongoing production support for existing applications.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	30	V
Continuous Drain Current @ 25°C (Ta)	29	A
Continuous Drain Current @ Case Temp (Tc)	32	A
On-Resistance (Rds On) @ 20A, 10V	5	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	2.4	V
Gate Charge (Qg) @ 10V	33	nC
Input Capacitance (Ciss) @ 15V	1550	pF
Power Dissipation (Ta)	6	W
Power Dissipation (Tc)	25	W
Operating Temperature Range	-55 to 150	°C
Package Type	8-DFN (5x6)	Surface Mount
FET Type	N-Channel
Technology	MOSFET (Metal Oxide)

Substitute Part Grouping Explanation

Substitution of the AON6566 is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Drain-to-Source Voltage (Vdss): Must equal or exceed 30V
Continuous Drain Current (Id): Must meet or exceed 29A at Ta (25°C)
On-Resistance (Rds On): Must not exceed 5mOhm at specified gate voltage and current
Gate Threshold Voltage (Vgs(th)): Must be compatible with 10V gate drive voltage
Operating Temperature Range: Must support -55°C to 150°C minimum
FET Type: N-Channel only
Technology: MOSFET (Metal Oxide) only
Mounting Type: Surface Mount required

Package Compatibility: The AON6566 uses an 8-DFN (5x6) package. Substitute parts may use alternative 8-pin surface mount packages (8-VSONP, 8-HSMT, 8-SOP, PowerFlat) provided they maintain compatible footprint dimensions and pin configurations for the application.

Substitute parts are grouped into two categories:

Direct Performance Upgrades – Parts exceeding AON6566 specifications with higher current ratings and improved thermal performance
Functional Equivalents – Parts meeting or closely matching AON6566 electrical specifications within acceptable tolerance ranges

Parameter Comparison

Parameter	AON6566	CSD17577Q5A	CSD17577Q5AT	RQ3E150BNTB	RQ3E160ADTB	RQ3E180AJTB	RQ3E180BNTB	RQ3E180GNTB	STL66N3LLH5	STL86N3LLH6AG	TPH3R003PL,LQ
Manufacturer	Alpha & Omega	Texas Instruments	Texas Instruments	Rohm	Rohm	Rohm	Rohm	Rohm	STMicroelectronics	STMicroelectronics	Toshiba
Vdss (V)	30	30	30	30	30	30	30	30	30	30	30
Id @ Ta (A)	29	60	60	15	16	18	—	18	—	—	—
Id @ Tc (A)	32	60	60	39	—	30	39	39	80	80	88
Rds On (mOhm)	5.0 @ 20A, 10V	4.2 @ 18A, 10V	4.2 @ 18A, 10V	5.3 @ 15A, 10V	4.5 @ 16A, 10V	4.5 @ 18A, 4.5V	3.9 @ 18A, 10V	4.3 @ 18A, 10V	5.8 @ 10.5A, 10V	5.2 @ 10.5A, 10V	4.2 @ 44A, 4.5V
Vgs(th) (V)	2.4 @ 250µA	1.8 @ 250µA	1.8 @ 250µA	2.5 @ 1mA	2.5 @ 1mA	1.5 @ 11mA	2.5 @ 1mA	2.5 @ 1mA	3.0 @ 250µA	2.5 @ 250µA	2.1 @ 300µA
Qg @ 10V (nC)	33	35	35	45	51	39 @ 4.5V	37 @ 4.5V	22.4	12 @ 4.5V	17 @ 4.5V	50
Ciss @ 15V (pF)	1550	2310	2310	3000	2550	4290	3500	1520	1500 @ 25V	2030 @ 25V	3825
Power Dissipation Ta (W)	6	3	3	2	2	2	2	2	—	4	—
Power Dissipation Tc (W)	25	53	53	17	—	30	20	20	72	60	90
Operating Temp Range (°C)	-55 to 150	-55 to 150	-55 to 150	to 150	to 150	to 150	-55 to 150	to 150	-55 to 175	-55 to 150	to 175
Package	8-DFN (5x6)	8-VSONP (5x6)	8-VSONP (5x6)	8-HSMT (3.2x3)	8-HSMT (3.2x3)	8-HSMT (3.2x3)	8-HSMT (3.2x3)	8-HSMT (3.2x3)	PowerFlat (5x6)	PowerFlat (5x6)	8-SOP Advance (5x5)
Product Status	Not For New Designs	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant

Engineering Selection Recommendations

For Direct Replacement with Enhanced Performance:

The CSD17577Q5A and CSD17577Q5AT (Texas Instruments NexFET™ series) provide superior electrical performance with 60A continuous drain current, lower on-resistance (4.2mOhm), and higher power dissipation capability (53W Tc). Both devices maintain 30V Vdss rating and -55°C to 150°C operating range. CSD17577Q5A is supplied in Tape & Reel packaging, while CSD17577Q5AT is supplied in Cut Tape & Digi-Reel® format. Both are Active status products with ROHS3 compliance. The CSD17577Q5AT carries REACH Affected status, whereas CSD17577Q5A is REACH Unaffected.

For Compact Form Factor Applications:

The Rohm RQ3E series (RQ3E150BNTB, RQ3E160ADTB, RQ3E180AJTB, RQ3E180BNTB, RQ3E180GNTB) utilizes the smaller 8-HSMT (3.2x3) package, reducing PCB footprint by approximately 40% compared to the AON6566 8-DFN (5x6). These devices maintain 30V Vdss rating and are Active status products with ROHS3 compliance. RQ3E180GNTB offers the closest electrical match with 18A Ta rating, 4.3mOhm Rds On, and 22.4nC gate charge. RQ3E180BNTB provides 39A Tc capability with 3.9mOhm Rds On for higher thermal performance applications.

For High-Current, High-Power Applications:

The STMicroelectronics STL66N3LLH5 and STL86N3LLH6AG deliver 80A continuous drain current with 72W and 60W power dissipation respectively. STL66N3LLH5 is AEC-Q101 qualified automotive-grade with extended temperature range to 175°C. STL86N3LLH6AG operates to 150°C with improved gate charge characteristics (17nC @ 4.5V). Both use PowerFlat™ (5x6) package maintaining similar footprint to AON6566.

The Toshiba TPH3R003PL,LQ (U-MOSIX-H series) provides 88A Tc capability with 90W power dissipation and extended temperature range to 175°C. This device offers the highest current rating among substitutes.

Compliance and Certification:

All substitute parts listed are ROHS3 compliant and REACH unaffected or affected as specified. STMicroelectronics devices carry AEC-Q101 automotive qualification. Product status is Active for all substitutes, ensuring long-term availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the CSD17577Q5A directly replace the AON6566 without PCB layout modifications?

A: The CSD17577Q5A uses an 8-VSONP (5x6) package compared to the AON6566 8-DFN (5x6). While both packages share identical external dimensions (5x6mm), pin configurations and lead geometry differ. PCB footprint redesign is required. Electrical compatibility is confirmed: 30V Vdss, superior 60A current rating, and compatible gate drive voltage (10V).

Q: What is the primary advantage of the RQ3E180GNTB over the AON6566?

A: The RQ3E180GNTB maintains electrical compatibility (30V Vdss, 18A Ta, 4.3mOhm Rds On) while reducing package size to 8-HSMT (3.2x3), approximately 40% smaller than the AON6566 8-DFN (5x6). This enables higher component density on PCBs. Gate charge is lower (22.4nC vs 33nC), reducing switching losses. Both are Active status products with ROHS3 compliance.

Q: Are the Rohm RQ3E series parts suitable for applications requiring the full 29A continuous current of the AON6566?

A: The RQ3E180GNTB and RQ3E180BNTB both support 18A at Ta (25°C) and 39A at Tc (case temperature). For applications requiring sustained 29A at ambient temperature, thermal management design must ensure case temperature operation. At Tc, both devices exceed the AON6566 32A rating. Rds On values (4.3mOhm and 3.9mOhm respectively) are comparable to or better than the AON6566 (5.0mOhm).

Q: What is the difference between CSD17577Q5A and CSD17577Q5AT?

A: Both devices are electrically identical Texas Instruments NexFET™ MOSFETs with 60A rating and 4.2mOhm Rds On. The primary difference is packaging format: CSD17577Q5A is supplied in Tape & Reel (TR), while CSD17577Q5AT is supplied in Cut Tape (CT) & Digi-Reel® format. CSD17577Q5AT carries REACH Affected status; CSD17577Q5A is REACH Unaffected. Selection depends on procurement and assembly requirements.

Q: Can the STL66N3LLH5 be used in applications with operating temperatures above 150°C?

A: The STL66N3LLH5 supports operating temperatures from -55°C to 175°C, exceeding the AON6566 range (-55°C to 150°C). This device is suitable for high-temperature applications. It carries AEC-Q101 automotive qualification and is available in Tape & Reel packaging. Power dissipation at Tc is 72W, significantly higher than the AON6566 (25W Tc).

Q: What are the gate drive voltage requirements for substitute parts?

A: The AON6566 specifies drive voltages of 4.5V (Max Rds On) and 10V (Min Rds On). Substitute parts maintain compatibility with these drive voltages. The RQ3E180AJTB operates at 2.5V and 4.5V drive voltages, requiring gate driver adjustment. The STL66N3LLH5 and STL86N3LLH6AG support 4.5V and 10V drive voltages, matching AON6566 specifications. Verify gate driver output voltage compatibility before substitution.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed are RoHS compliant. CSD17577Q5A, CSD17577Q5AT, and all Rohm RQ3E series parts are ROHS3 compliant. STMicroelectronics STL66N3LLH5 and STL86N3LLH6AG are ROHS3 compliant. Toshiba TPH3R003PL,LQ is RoHS compliant. All devices are suitable for applications requiring RoHS compliance.

Q: What is the moisture sensitivity level (MSL) for substitute parts?

A: All substitute parts listed carry MSL 1 (Unlimited), matching the AON6566 MSL rating. This indicates no moisture sensitivity restrictions and unlimited shelf life under standard storage conditions.

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