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Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

Alpha & Omega Semiconductor Inc. AONS36348

Name: AONS36348
Brand: Alpha & Omega Semiconductor Inc.
SKU: AONS36348
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AONS36348

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: 8-PowerSMD, Flat Leads

Datasheet:: AONS36348.pdf

Description:: MOSFET N-CH 30V 24A/50A 8DFN

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AONS36348 from Alpha & Omega Semiconductor is a 30V, 50A N-channel Trench Power MOSFET in DFN5x6 package with R_DS(ON) < 7 mΩ at V_GS = 10 V and < 11.5 mΩ at V_GS = 4.5 V, optimized for high-efficiency DC/DC converters in computing and telecom power supplies.

For engineers reviewing the AONS36348 datasheet, pinout, applications, or equivalent options, key selection factors include its low gate charge (Q_g = 10–20 nC), 100% UIS-tested ruggedness, body-diode reverse recovery performance (Q_rr = 13 nC), and thermal resistance R_θJC = 4.8 °C/W for high-power-density POL designs.

Technical Context

The AONS36348 employs Trench Power MOSFET technology to achieve low R_DS(ON) and high current capability while maintaining fast switching: t_d(on) = 5 ns, t_r = 2.5 ns, t_d(off) = 17 ns, and t_f = 2.5 ns under standard test conditions (V_GS = 10 V, V_DS = 15 V, R_GEN = 3 Ω).

Its dynamic parameters are characterized with C_iss = 800 pF, C_oss = 240 pF, and C_rss = 35 pF at V_DS = 15 V, supporting high-frequency operation in synchronous buck and isolated forward topologies where low capacitive losses and controlled dv/dt are critical.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	30 V - Maximum drain-source blocking voltage for 12 V and 24 V input systems
I_D (V_GS = 10 V)	50 A - Continuous conduction capability at full gate drive for high-current POL stages
R_DS(ON) (V_GS = 10 V)	< 7 mΩ - Enables <1.5 W conduction loss at 50 A, reducing heatsink requirements
R_DS(ON) (V_GS = 4.5 V)	< 11.5 mΩ - Ensures robust operation with 5 V gate drivers in logic-level control architectures
Q_g (10 V)	10–20 nC - Low total gate charge minimizes driver power and enables >1 MHz switching
R_θJC	4.8 °C/W - Junction-to-case thermal resistance supports direct heatsink mounting for thermal management
E_AS	9 mJ - Avalanche energy rating confirms ruggedness under unclamped inductive switching stress

Pinout & Package

Package: DFN5x6 (5 mm × 6 mm, 1.0 mm height), exposed drain pad on bottom side for thermal and electrical connection.

Pin/Terminal	Circuit Role	Design Meaning
1 (G)	Gate	Control terminal; low gate resistance (R_g = 0.5–1.5 Ω) reduces ringing and EMI
2, 3, 4, 6, 7, 8 (D)	Drain	High-current output path; multiple pins and exposed pad minimize inductance and thermal impedance
5 (S)	Source	Reference node for gate drive; tied to power ground plane in synchronous rectifier configurations

Key Features

Feature	Design Value
100% UIS tested	Guarantees single-pulse avalanche survivability up to 9 mJ without derating in real-world inductive turn-off events
Low Q_g/Q_gd ratio	Q_gd = 2 nC and Q_g(10 V) ≤ 20 nC yield Miller plateau immunity and reduced shoot-through risk in half-bridge layouts
Body diode with low Q_rr	Q_rr = 13 nC and t_rr = 10 ns enable efficient synchronous rectification and reduce dead-time losses
RoHS and halogen-free	Complies with IPC-1752A material declaration standards for industrial and telecom end-equipment compliance

Applications

Server VRM Output Stage	Telecom Isolated DC/DC Primary Switch
Use Scenario: High-current, high-frequency synchronous buck converter delivering 50 A at 0.8–1.2 V to CPU/GPU cores. IC Role / Device Role / Timing Role: High-side power switch operating at 500 kHz–1 MHz with tight duty-cycle control. Use Value: R_DS(ON) < 7 mΩ and R_θJC = 4.8 °C/W allow >95% efficiency and junction temperature rise < 40°C at 50 A continuous load.	Use Scenario: Primary-side switch in 300–500 W isolated forward or active-clamp forward converter for 48 V telecom systems. IC Role / Device Role / Timing Role: Main switching transistor handling 30 V bus with fast turn-off (t_f = 2.5 ns) to minimize overlap losses. Use Value: Low C_oss = 240 pF and C_rss = 35 pF reduce capacitive switching loss and improve ZVS initiation margin.
Industrial POL Module	GPU Power Delivery System
Use Scenario: Compact 12 V input, 3.3 V/20 A point-of-load module for PLC I/O and sensor interface boards. IC Role / Device Role / Timing Role: Low-voltage, logic-level driven MOSFET enabling direct 5 V gate drive without level-shifting. Use Value: R_DS(ON) < 11.5 mΩ at V_GS = 4.5 V ensures stable regulation and <0.5% output droop under transient load steps.	Use Scenario: Multi-phase GPU core power stage requiring parallel 30 V switches with matched dynamic characteristics. IC Role / Device Role / Timing Role: Synchronous rectifier in interleaved buck phase leg with precise gate timing alignment. Use Value: Tight Q_g tolerance (10–20 nC) and matched t_d(on)/t_d(off) ensure balanced current sharing across phases.

Server VRM Output Stage

Telecom Isolated DC/DC Primary Switch

Use Scenario: High-current, high-frequency synchronous buck converter delivering 50 A at 0.8–1.2 V to CPU/GPU cores.

IC Role / Device Role / Timing Role: High-side power switch operating at 500 kHz–1 MHz with tight duty-cycle control.

Use Value: R_DS(ON) < 7 mΩ and R_θJC = 4.8 °C/W allow >95% efficiency and junction temperature rise < 40°C at 50 A continuous load.

Use Scenario: Primary-side switch in 300–500 W isolated forward or active-clamp forward converter for 48 V telecom systems.

IC Role / Device Role / Timing Role: Main switching transistor handling 30 V bus with fast turn-off (t_f = 2.5 ns) to minimize overlap losses.

Use Value: Low C_oss = 240 pF and C_rss = 35 pF reduce capacitive switching loss and improve ZVS initiation margin.

Industrial POL Module

GPU Power Delivery System

Use Scenario: Compact 12 V input, 3.3 V/20 A point-of-load module for PLC I/O and sensor interface boards.

IC Role / Device Role / Timing Role: Low-voltage, logic-level driven MOSFET enabling direct 5 V gate drive without level-shifting.

Use Value: R_DS(ON) < 11.5 mΩ at V_GS = 4.5 V ensures stable regulation and <0.5% output droop under transient load steps.

Use Scenario: Multi-phase GPU core power stage requiring parallel 30 V switches with matched dynamic characteristics.

IC Role / Device Role / Timing Role: Synchronous rectifier in interleaved buck phase leg with precise gate timing alignment.

Use Value: Tight Q_g tolerance (10–20 nC) and matched t_d(on)/t_d(off) ensure balanced current sharing across phases.

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRFH5020	R_DS(ON) = 6.2 mΩ @ 10 V; Q_g = 22 nC; DFN5x6 package	Slightly higher gate charge increases driver loss at >1 MHz; identical thermal footprint	Preferred when lowest R_DS(ON) is prioritized over switching speed
SiR626DP	R_DS(ON) = 7.2 mΩ @ 10 V; Q_g = 17 nC; PowerPAK® SO-8L package	Larger SO-8L footprint requires PCB redesign; higher R_θJA = 55 °C/W limits ambient-limited power	Selected when legacy SO-8L layout reuse is required and thermal headroom exists

Compared with IRFH5020 and SiR626DP, the AONS36348 delivers the best balance of low R_DS(ON), moderate Q_g, and industry-standard DFN5x6 thermal performance-making it optimal for space-constrained, high-efficiency 30 V power stages where both conduction and switching losses must be minimized.

Availability

AONS36348 is available at Aetrix Electronics and suitable for server VRMs, telecom isolated DC/DC converters, and industrial POL modules requiring stable component supply, consistent parametric performance, and long-term production availability.

Supply support for AONS36348 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Alpha & Omega Semiconductor (AOS) is a fabless power semiconductor company specializing in high-performance MOSFETs, IGBTs, and power ICs for computing, consumer, and industrial markets.

The AONS36348 belongs to AOS's Trench Power MOSFET product line, engineered specifically for high-current, high-frequency DC/DC conversion where low R_DS(ON), fast switching, and avalanche ruggedness are essential.

FAQ

What is the maximum continuous drain current rating for AONS36348 at TC = 100°C?

The AONS36348 has a maximum continuous drain current I_D of 30 A at case temperature T_C = 100°C, as specified in the Absolute Maximum Ratings table. This rating reflects thermal derating due to junction-to-case thermal resistance (R_θJC = 4.8 °C/W) and maximum junction temperature limit of 150°C. The AONS36348 maintains safe operation under sustained high-current loads when properly heatsinked.

Does AONS36348 support logic-level gate drive?

Yes, the AONS36348 supports logic-level gate drive with guaranteed R_DS(ON) < 11.5 mΩ at V_GS = 4.5 V, making it compatible with standard 5 V microcontroller outputs and gate drivers without level-shifting circuitry. Its gate threshold voltage V_GS(th) ranges from 1.2 V to 2.1 V, ensuring reliable turn-on with margin even at elevated temperatures. This behavior is confirmed in the AONS36348 datasheet's Electrical Characteristics table.

What is the body diode forward voltage of AONS36348 at IS = 30 A?

The body diode forward voltage V_SD of the AONS36348 is 0.7–1.0 V at I_S = 30 A and T_J = 25°C, per the Electrical Characteristics table. This low V_SD reduces conduction loss during synchronous rectifier dead-time and improves efficiency in bidirectional or freewheeling applications. The AONS36348's body diode also exhibits fast reverse recovery (t_rr = 10 ns, Q_rr = 13 nC), minimizing associated switching loss.

Is AONS36348 qualified for automotive applications?

No, the AONS36348 is not AEC-Q101 qualified and is intended for computing, telecom, and industrial applications only. Its datasheet explicitly excludes use in life-support devices or automotive safety-critical systems. For automotive-grade alternatives, refer to AOS's AEC-Q101-qualified Trench MOSFET portfolio-AONS36348 itself lacks automotive qualification documentation, temperature cycling validation, or failure-in-time (FIT) data required for automotive deployment.

How is thermal performance measured for AONS36348 in the datasheet?

Thermal performance of the AONS36348 is characterized using two metrics: R_θJC = 4.8 °C/W (junction-to-case, measured with large heatsink) and R_θJA = 50 °C/W (junction-to-ambient, measured on 1 in² FR-4 board with 2 oz copper). These values define power derating curves in Figures 12 and 13. The AONS36348's exposed drain pad enables direct thermal coupling to heatsinks, and its R_θJC value is used to calculate junction temperature rise under forced or conductive cooling conditions.

AONS36348 Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: -

Package/Case:: 8-PowerSMD, Flat Leads

Packaging:: Tape & Reel (TR)

Product Status:: Active

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 30 V

Current - Continuous Drain (Id) @ 25°C:: 24A (Ta), 50A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 4.5V, 10V

Rds On (Max) @ Id, Vgs:: 7mOhm @ 20A, 10V

Vgs(th) (Max) @ Id:: 2.1V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 20 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 800 pF @ 15 V

FET Feature:: -

Power Dissipation (Max):: 6.2W (Ta), 26W (Tc)

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-DFN (5x6)

AONS36348 FAQ

1.How can I place an order for AONS36348 through Aetrix?

Please submit a Request for Quotation (RFQ) for AONS36348 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for AONS36348 reliable?

The price and inventory of AONS36348 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AONS36348 is usually 5 days.

3.What payment methods are accepted for AONS36348?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AONS36348 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AONS36348?

AONS36348 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AONS36348 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for AONS36348?

For technical support, including AONS36348 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AONS36348 requirements.

6.How does Aetrix verify that AONS36348 is sourced from the original manufacturer or authorized distributors?

All AONS36348 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AONS36348 meets industry standards.

7.What is the process for return or replacement of AONS36348?

All AONS36348 units undergo pre-shipment inspection (PSI). If there is an issue with AONS36348, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The AONS36348 part is unused and in its original packaging.

Return procedure for AONS36348:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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