AON6314 Equivalent & Substitute Parts

Part Overview

The AON6314 is an N-Channel MOSFET rated for 30V drain-to-source voltage with 85A continuous drain current in a surface mount 8-DFN (5x6) package. This device is classified as "Not For New Designs," indicating it has reached end-of-life status. Identifying equivalent and substitute parts is necessary for ongoing production support, maintenance applications, and design transitions to active product lines.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	30	V
Continuous Drain Current (Id) @ 25°C	85	A (Tc)
On-Resistance (Rds On) @ 20A, 10V	2.8	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	2	V
Gate Charge (Qg) @ 4.5V	20	nC
Power Dissipation (Max)	32.5	W (Tc)
Operating Temperature Range	-55 to 150	°C (TJ)
Package Type	8-DFN (5x6)	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the AON6314 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 (Id): Must support 85A or equivalent thermal performance
On-Resistance (Rds On): Must not significantly exceed 2.8mOhm to maintain thermal and efficiency characteristics
Gate Threshold Voltage (Vgs(th)): Must fall within compatible drive voltage ranges
Operating Temperature Range: Must support -55°C to 150°C

Mechanical Compatibility Criteria:

Mounting Type: Surface Mount required
Package Footprint: 8-pin power package configurations
Lead Configuration: Flat leads for automated assembly

The three substitute parts listed below meet these criteria with variations in package form factor and thermal performance specifications.

Parameter Comparison

Parameter	AON6314	AONS36314	RJK0391DPA-00#J5A	TPH3R203NL,L1Q
Manufacturer	Alpha & Omega Semiconductor	Alpha & Omega Semiconductor	Renesas Electronics	Toshiba Semiconductor
Vdss (V)	30	30	30	30
Id @ 25°C (A)	85 (Tc)	85 (Tc)	50 (Ta)	47 (Tc)
Rds On @ 10V (mOhm)	2.8 @ 20A	2.9 @ 20A	2.9 @ 25A	3.2 @ 23.5A
Vgs(th) @ Specified Id (V)	2 @ 250µA	1.9 @ 250µA	2.5 @ 1mA	2.3 @ 300µA
Gate Charge Qg (nC)	20 @ 4.5V	40 @ 10V	34 @ 4.5V	21 @ 10V
Power Dissipation Max (W)	32.5 (Tc)	42 (Tc)	50 (Tc)	44 (Tc)
Operating Temperature (°C)	-55 to 150	-55 to 150	-55 to 150	-55 to 150
Package	8-DFN (5x6)	8-DFN (5x6)	8-WPAK (3)	8-SOP Advance (5x5)
Product Status	Not For New Designs	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant

Engineering Selection Recommendations

AONS36314 (Alpha & Omega Semiconductor Inc.)

The AONS36314 is the primary substitute for the AON6314. Both devices share identical voltage ratings (30V Vdss), the same package footprint (8-DFN 5x6), and equivalent thermal performance (42W Tc vs. 32.5W Tc). The AONS36314 maintains active product status and ROHS3 compliance. On-resistance specifications are nearly identical (2.9mOhm vs. 2.8mOhm @ 10V). This part provides direct mechanical and electrical compatibility with minimal design modification.

RJK0391DPA-00#J5A (Renesas Electronics Corporation)

The RJK0391DPA-00#J5A offers electrical compatibility at 30V Vdss with 50A continuous drain current. The package differs (8-WPAK vs. 8-DFN), requiring PCB layout modification. On-resistance is comparable (2.9mOhm @ 25A, 10V). Power dissipation capability is superior (50W Tc). This substitute is suitable for applications where package footprint change is acceptable and higher thermal performance is beneficial. Product status is active with ROHS3 compliance.

TPH3R203NL,L1Q (Toshiba Semiconductor and Storage)

The TPH3R203NL,L1Q provides 30V Vdss with 47A continuous drain current in an 8-SOP Advance (5x5) package. On-resistance is slightly higher (3.2mOhm @ 23.5A, 10V). Power dissipation is 44W (Tc), exceeding the original specification. Package footprint differs from the AON6314, requiring PCB redesign. This part is suitable for applications where current requirements are lower and package space permits the 5x5 footprint. Product status is active with RoHS compliance.

Frequently Asked Questions (FAQ)

Q: Can the AONS36314 be used as a direct replacement for the AON6314 without PCB modification?

A: Yes. The AONS36314 shares the identical 8-DFN (5x6) package footprint, pinout, and electrical specifications with the AON6314. No PCB layout changes are required. Both devices operate within the same voltage and current ranges with comparable on-resistance characteristics.

Q: What are the key differences between the three substitute parts?

A: The primary differences are package form factor and current rating. The AONS36314 maintains the original 8-DFN package with 85A capability. The RJK0391DPA-00#J5A uses an 8-WPAK package with 50A rating. The TPH3R203NL,L1Q uses an 8-SOP Advance package with 47A rating. All three maintain 30V Vdss and comparable on-resistance performance.

Q: Are all substitute parts RoHS compliant?

A: Yes. The AONS36314 and RJK0391DPA-00#J5A are ROHS3 compliant. The TPH3R203NL,L1Q is RoHS compliant. All three parts meet environmental compliance requirements for current manufacturing standards.

Q: Which substitute part is recommended for new designs?

A: The AONS36314 is recommended for new designs. It is the only substitute with active product status that maintains the original package footprint, eliminating design and manufacturing complexity. Both the RJK0391DPA-00#J5A and TPH3R203NL,L1Q are also active products but require PCB layout modifications due to different package configurations.

Q: What is the impact of package differences on circuit performance?

A: Package differences affect PCB layout, thermal management, and assembly processes. The 8-DFN (5x6) and 8-SOP Advance (5x5) packages have different lead spacing and thermal pad configurations. The 8-WPAK (3) package has distinct thermal characteristics. Thermal performance and current distribution may vary depending on PCB design and thermal management implementation.

Q: Can the AON6314 be used in new production runs?

A: No. The AON6314 is classified as "Not For New Designs." For ongoing production, the AONS36314 is the recommended transition path. For new design initiatives, any of the three active substitute parts are acceptable based on application requirements and package constraints.

Q: How do gate charge specifications affect substitution?

A: Gate charge (Qg) determines switching speed and driver circuit requirements. The AON6314 specifies 20nC @ 4.5V. Substitutes range from 21nC to 40nC depending on measurement conditions. Higher gate charge may require driver circuit optimization but does not prevent substitution if the driver circuit has adequate current capacity.

Q: Are there thermal performance differences between substitutes?

A: Yes. The AON6314 is rated 32.5W (Tc). The AONS36314 is rated 42W (Tc), the RJK0391DPA-00#J5A is rated 50W (Tc), and the TPH3R203NL,L1Q is rated 44W (Tc). All substitutes provide equal or superior thermal performance, allowing for equivalent or improved thermal management in the application circuit.

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