AON6370 N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The AON6370 is an N-Channel MOSFET manufactured by Alpha & Omega Semiconductor Inc., rated for 30V drain-to-source voltage with continuous drain current of 23A (Ta) and 47A (Tc). The device is housed in an 8-DFN (5x6) surface mount package and is classified as obsolete. Due to its obsolete status, equivalent substitute parts from active manufacturers are necessary for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across voltage ratings, current handling, and thermal characteristics while accommodating different package geometries.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	30	V
Continuous Drain Current @ 25°C (Ta)	23	A
Continuous Drain Current @ 25°C (Tc)	47	A
On-Resistance (Rds On) @ 20A, 10V	7.2	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	2.2	V
Gate Charge (Qg) @ 10V	13	nC
Input Capacitance (Ciss) @ 15V	840	pF
Power Dissipation (Ta)	6.2	W
Power Dissipation (Tc)	26	W
Operating Temperature Range	-55 to 150	°C
Package Type	8-DFN (5x6)	Surface Mount
RoHS Status	ROHS3 Compliant	-
Moisture Sensitivity Level	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution of the AON6370 is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

Drain-to-Source Voltage (Vdss): Must equal or exceed 30V
Continuous Drain Current: Must support minimum 23A (Ta) or 47A (Tc) depending on application thermal conditions
On-Resistance (Rds On): Lower or equivalent values ensure thermal performance
Gate Threshold Voltage (Vgs(th)): Must fall within compatible gate drive voltage ranges (4.5V to 10V)
Gate Charge (Qg): Lower values reduce switching losses
Input Capacitance (Ciss): Affects gate drive requirements

Mechanical Compatibility Criteria:

Mounting Type: Surface mount only
Package Footprint: Different package geometries (8-DFN, 8-PQFN, 8-SOP, 8-TSON) require PCB layout verification
Lead Configuration: Flat leads vs. gull-wing leads affect assembly compatibility

Compliance Criteria:

RoHS3 Compliance: All substitutes must maintain regulatory compliance
Moisture Sensitivity Level: MSL 1 (Unlimited) preferred for storage and handling flexibility
Product Status: Active or Not For New Designs status indicates availability and manufacturer support

The four substitute parts listed below meet these criteria with variations in package type and current ratings that accommodate different application requirements.

Parameter Comparison

Parameter	AON6370	IRFH3702TRPBF	TPH6R003NL,LQ	TPN6R003NL,LQ	TPN6R303NC,LQ	Unit
Manufacturer	Alpha & Omega Semiconductor	Infineon Technologies	Toshiba Semiconductor	Toshiba Semiconductor	Toshiba Semiconductor	-
Vdss	30	30	30	30	30	V
Id (Ta)	23	16	-	-	20	A
Id (Tc)	47	42	38	27	-	A
Rds On @ 10V	7.2 @ 20A	7.1 @ 16A	6.0 @ 19A	6.0 @ 13.5A	6.3 @ 10A	mOhm
Vgs(th)	2.2 @ 250µA	2.35 @ 25µA	2.3 @ 200µA	2.3 @ 200µA	2.3 @ 200µA	V
Qg @ 10V	13	14 @ 4.5V	17	17	24	nC
Ciss @ 15V	840	1510	1400	1400	1370	pF
Power Dissipation (Ta)	6.2	2.8	1.6	0.7	0.7	W
Power Dissipation (Tc)	26	-	34	32	19	W
Operating Temperature	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150	°C
Package	8-DFN (5x6)	8-PQFN (3x3)	8-SOP Advance (5x5)	8-TSON Advance (3.1x3.1)	8-TSON Advance (3.1x3.1)	-
Product Status	Obsolete	Not For New Designs	Active	Active	Active	-
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	-
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	-

Engineering Selection Recommendations

IRFH3702TRPBF (Infineon Technologies)

The IRFH3702TRPBF is rated for 30V with 16A (Ta) and 42A (Tc) continuous drain current. On-resistance of 7.1 mOhm at 16A, 10V is comparable to the AON6370. The 8-PQFN (3x3) package provides a smaller footprint than the original 8-DFN (5x6). Product status is "Not For New Designs," indicating limited manufacturer support. This substitute is suitable for applications where the 16A (Ta) rating is sufficient and compact packaging is advantageous. ROHS3 compliance and MSL 1 rating are maintained.

TPH6R003NL,LQ (Toshiba Semiconductor and Storage)

The TPH6R003NL,LQ is rated for 30V with 38A (Tc) continuous drain current and 6.0 mOhm on-resistance at 19A, 10V. The 8-SOP Advance (5x5) package maintains a footprint similar to the original 8-DFN (5x6). Product status is Active, ensuring ongoing manufacturer support and availability. Power dissipation at Tc (34W) exceeds the AON6370 (26W), providing thermal headroom. This substitute is recommended for applications requiring sustained high current operation with active manufacturer support. RoHS compliance and MSL 1 rating are maintained.

TPN6R003NL,LQ (Toshiba Semiconductor and Storage)

The TPN6R003NL,LQ is rated for 30V with 27A (Tc) continuous drain current and 6.0 mOhm on-resistance at 13.5A, 10V. The 8-TSON Advance (3.1x3.1) package provides the smallest footprint among substitutes. Product status is Active with full manufacturer support. Power dissipation at Tc (32W) exceeds the AON6370 (26W). This substitute is suitable for space-constrained applications where the 27A (Tc) rating is adequate. RoHS compliance and MSL 1 rating are maintained.

TPN6R303NC,LQ (Toshiba Semiconductor and Storage)

The TPN6R303NC,LQ is rated for 30V with 20A (Ta) continuous drain current and 6.3 mOhm on-resistance at 10A, 10V. The 8-TSON Advance (3.1x3.1) package provides compact mounting. Product status is Active with manufacturer support. Gate charge of 24 nC at 10V is higher than other substitutes, affecting switching speed. This substitute is suitable for applications where the 20A (Ta) rating is sufficient and compact packaging is required. RoHS compliance and MSL 1 rating are maintained.

Frequently Asked Questions (FAQ)

Q: Can the AON6370 be directly replaced with any of these substitutes without PCB modification?

A: Direct replacement without PCB modification is not possible due to package geometry differences. The AON6370 uses 8-DFN (5x6), while substitutes use 8-PQFN (3x3), 8-SOP Advance (5x5), or 8-TSON Advance (3.1x3.1) packages. PCB footprint redesign is required for each substitute.

Q: Which substitute has the closest electrical performance to the AON6370?

A: The TPH6R003NL,LQ and TPN6R003NL,LQ both feature 6.0 mOhm on-resistance, which is lower than the AON6370's 7.2 mOhm, indicating improved efficiency. Both maintain 30V Vdss rating and support high continuous drain current. The TPH6R003NL,LQ offers 38A (Tc), closest to the AON6370's 47A (Tc).

Q: What is the significance of the "Not For New Designs" status for the IRFH3702TRPBF?

A: "Not For New Designs" indicates that Infineon Technologies is not recommending this part for new product development. While the part remains available, manufacturer support and long-term availability are not guaranteed. For new designs, the Toshiba parts with "Active" status are preferred.

Q: How do gate charge differences affect circuit design?

A: Gate charge (Qg) determines the energy required to switch the MOSFET. The AON6370 has 13 nC at 10V, while substitutes range from 14 nC to 24 nC. Higher gate charge requires stronger gate drive circuits and increases switching losses. The TPN6R303NC,LQ with 24 nC requires the most robust gate drive.

Q: Are all substitutes RoHS compliant?

A: Yes, all substitutes maintain RoHS compliance. The AON6370 is ROHS3 compliant, and all four substitutes are either ROHS3 or RoHS compliant, ensuring regulatory compatibility for applications requiring lead-free components.

Q: Which substitute is best for high-temperature applications?

A: All substitutes support the same operating temperature range (-55°C to 150°C) as the AON6370. Selection should be based on power dissipation requirements at elevated temperatures. The TPH6R003NL,LQ offers the highest Tc power dissipation (34W), providing the best thermal performance.

Q: What is the impact of input capacitance (Ciss) differences on gate drive design?

A: Input capacitance affects gate drive current requirements and switching speed. The AON6370 has 840 pF at 15V, while substitutes range from 1370 pF to 1510 pF. Higher capacitance requires higher gate drive current to achieve the same switching speed. Gate drive circuits must be verified for compatibility with the selected substitute.

Q: Can the TPN6R303NC,LQ replace the AON6370 in all applications?

A: The TPN6R303NC,LQ is suitable only for applications where the 20A (Ta) continuous drain current is sufficient. Applications requiring the full 23A (Ta) or 47A (Tc) of the AON6370 must use TPH6R003NL,LQ or TPN6R003NL,LQ. Thermal analysis is required to determine whether Ta or Tc rating applies to the specific application.

Q: What is the difference between Ta and Tc current ratings?

A: Ta (ambient temperature) rating assumes the device operates at 25°C ambient with natural convection cooling. Tc (case temperature) rating assumes active thermal management with the device case maintained at 25°C. Applications with forced-air cooling or heat sinks typically achieve Tc ratings. Thermal design determines which rating applies.

Q: Are moisture sensitivity levels identical across all parts?

A: Yes, all parts including the AON6370 have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. These parts can be stored and handled without special moisture control measures, simplifying supply chain management.

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