My Inquiry
My Account
Alpha & Omega Semiconductor Inc. AOD456A
- Part No.:
- AOD456A
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- FETs, MOSFETs
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
AOD456A.pdf
- Description:
- MOSFET N-CH 25V 50A TO252
- Quantity:
- Payment:
- Shipping:
Inventory:6,744
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AOD456A from Alpha & Omega Semiconductor is an N-channel enhancement-mode MOSFET designed for high-current switching in PWM and load-switching applications. It features a 25 V drain-source breakdown voltage, 50 A continuous drain current at TC=25°C, <6 mΩ RDS(ON) at VGS=10 V, and 100% UIS-tested ruggedness for unclamped inductive switching reliability.
For engineers reviewing the AOD456A datasheet, pinout, applications, or equivalent options, this device is selected for high-efficiency DC-DC converters, motor drive half-bridges, and industrial power supplies where low conduction loss and fast switching with robust avalanche capability are required.
Technical Context
The AOD456A employs advanced trench-gate technology to achieve low RDS(ON) and gate charge (Qg = 31.7–38 nC at 10 V), enabling high-frequency operation with reduced switching losses. Its body diode exhibits trr = 30.9–37 ns and Qrr = 20.3 nC under IF = 20 A, dI/dt = 100 A/µs conditions.
Thermal design is supported by a junction-to-case thermal resistance of 3 °C/W (steady-state), allowing up to 45 W power dissipation at TC = 25°C. The device operates across –55°C to +175°C junction temperature range and is rated for repetitive avalanche energy of 50 mJ (L = 0.1 mH).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 25 V - Maximum blocking voltage in high-side or low-side switch configurations |
| ID (TC=25°C) | 50 A - Continuous current handling capacity with external heatsinking |
| RDS(ON) (VGS=10 V) | <6 mΩ - Enables ≤30 mW conduction loss at 20 A, critical for thermal management |
| Qg (10 V) | 31.7–38 nC - Determines gate driver strength requirement for ≤100 ns switching transitions |
| UIS Energy | 50 mJ - Confirmed single-pulse avalanche robustness without failure under inductive turn-off stress |
| trr / Qrr | 30.9–37 ns / 20.3 nC - Defines reverse recovery behavior in synchronous rectification and freewheeling paths |
| TJ Range | –55°C to +175°C - Supports operation in automotive under-hood and industrial ambient environments |
Pinout & Package
Package: TO-252 (D-Pak), surface-mount, single-ended heat transfer via exposed drain pad on bottom side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| G (Gate) | Control input | Receives 1–3 V threshold signal; requires ≤1.5 Ω gate resistance to damp ringing and control dv/dt |
| D (Drain) | High-side or output node | Connected to load or bus; electrically tied to exposed copper pad for thermal and electrical conduction |
| S (Source) | Reference and return path | Common node for gate drive reference and current sensing; must be low-inductance layout |
Key Features
| Feature | Design Value |
|---|---|
| 100% UIS tested | Guarantees unclamped inductive switching survival up to 50 mJ, eliminating need for external snubbers in relay/motor drive circuits |
| Low RDS(ON) at 4.5 V | <10 mΩ enables logic-level drive compatibility with 3.3 V/5 V microcontrollers without level-shifting |
| 100% Rg tested | Gate resistance 0.86–1.5 Ω ensures consistent turn-on/turn-off timing and EMI control across production lots |
| RoHS & Halogen Free | Complies with IPC-1752A material declaration requirements for consumer and industrial end-equipment |
Applications
| DC-DC Converter Switch | Motor Drive Half-Bridge |
|---|---|
Use Scenario: High-frequency synchronous buck converter in 12 V input, 3.3–5 V output point-of-load supply. IC Role / Device Role / Timing Role: Low-side power switch operating at 500 kHz–1 MHz with gate-driven synchronous rectification. Use Value: <6 mΩ RDS(ON) minimizes I²R loss at 25 A load, while 38 nC Qg allows efficient drive with integrated controller gate drivers. |
Use Scenario: 24 V brushed DC motor driver in automated gate operator with bidirectional control. IC Role / Device Role / Timing Role: High-current, low-side switch in H-bridge configuration with PWM duty cycle modulation. Use Value: 50 A rating and 100% UIS testing ensure reliable commutation during stall and reversal transients without avalanche failure. |
| Industrial Load Switch | Hot-Swap Power Controller |
Use Scenario: 24 V/48 V system-level power distribution with controlled inrush limiting and fault protection. IC Role / Device Role / Timing Role: Main pass element in discrete hot-swap circuit with external current sense and gate slew control. Use Value: Low RDS(ON) reduces steady-state drop and self-heating; SOA curve supports 10 ms overload events at 40 A without derating. |
Use Scenario: Backplane power sequencing in modular test equipment requiring controlled insertion under load. IC Role / Device Role / Timing Role: Primary power FET with external gate resistor and RC network for soft-start and overcurrent foldback. Use Value: Body diode Qrr = 20.3 nC and trr = 30.9 ns enable clean reverse recovery during plug-in transients, minimizing bus voltage droop. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel power MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IRF7470PBF | RDS(ON) = 5.5 mΩ @ 10 V; Qg = 42 nC; TO-252 package; lower ID (42 A @ TC=25°C) | Slightly higher gate charge increases driver loss; lower current rating limits peak surge handling | Preferred where marginally lower RDS(ON) justifies higher Qg penalty and reduced avalanche energy rating |
| DMT6006LPS-13 | RDS(ON) = 5.2 mΩ @ 10 V; Qg = 35 nC; same TO-252; TJ max = 150°C (vs. 175°C for AOD456A) | Lower max junction temperature restricts use in high-ambient industrial enclosures without additional cooling | Valid alternative for commercial-grade designs with ambient ≤70°C and no extended thermal margin requirement |
Compared with IRF7470PBF and DMT6006LPS-13, the AOD456A delivers superior thermal robustness (175°C TJ), higher avalanche energy (50 mJ), and tighter Rg distribution-making it preferred for mission-critical industrial and motor-control applications demanding long-term reliability under transient stress.
Availability
AOD456A is available at Aetrix Electronics and suitable for DC-DC converters, motor drives, and industrial load switches requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for AOD456A 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 modules for efficiency-critical systems.
The AOD456A belongs to AOS's "AlphaMOS" trench-MOSFET product line, engineered for high-current, high-frequency switching in power conversion and motor control where low RDS(ON), fast switching, and ruggedness are essential.
FAQ
What is the maximum continuous drain current rating for the AOD456A at 100°C case temperature?
The AOD456A supports 30 A continuous drain current at TC = 100°C, as specified in the Absolute Maximum Ratings table. This derated value reflects thermal limitations when heatsinking is constrained, and must be verified against PCB copper area, airflow, and ambient conditions in final layout. The AOD456A datasheet confirms this rating under steady-state conditions with proper thermal interface to the heatsink or PCB ground plane.
Does the AOD456A support logic-level gate drive at 4.5 V?
Yes, the AOD456A is fully characterized for logic-level operation: RDS(ON) remains below 10 mΩ at VGS = 4.5 V and ID = 20 A, enabling direct drive from 3.3 V or 5 V microcontrollers without gate boosting. Its gate threshold voltage (VGS(th)) ranges from 1.0 V to 3.0 V, ensuring reliable turn-on with standard logic outputs. This behavior is confirmed in the Electrical Characteristics table and Figure 5 of the AOD456A datasheet.
Is the AOD456A suitable for synchronous rectification in a 12 V to 5 V buck converter?
Yes, the AOD456A is well-suited for low-side synchronous rectification due to its low RDS(ON) (<6 mΩ at 10 V), fast body diode recovery (trr = 30.9–37 ns), and low Qrr (20.3 nC). These parameters minimize conduction and reverse recovery losses at 500 kHz–1 MHz switching frequencies. Layout must maintain tight source loop inductance to avoid shoot-through risk during dead-time transitions in the AOD456A-based design.
What is the thermal resistance from junction to ambient (RθJA) for the AOD456A on a standard PCB?
The AOD456A has a typical RθJA of 50 °C/W when mounted on a 1 in² FR-4 board with 2 oz. copper, measured in still air at TA = 25°C. This value assumes no additional heatsinking and is used to calculate maximum allowable power dissipation (PDSM ≈ 3 W) before reaching TJ = 150°C. For higher-power operation, RθJC = 3 °C/W enables more accurate thermal modeling when using external heatsinks or thermal vias beneath the drain pad.
How is the avalanche ruggedness of the AOD456A validated?
The AOD456A undergoes 100% unclamped inductive switching (UIS) testing per JEDEC JESD24-11, verifying single-pulse avalanche energy up to 50 mJ (L = 0.1 mH). This qualification ensures survivability during inductive turn-off transients in motor drives and solenoid controls. Test conditions-including peak current, voltage, and pulse width-are documented in the AOD456A datasheet's Absolute Maximum Ratings and Typical Characteristics sections.
AOD456A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 25 V
- Current - Continuous Drain (Id) @ 25°C:
- 50A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 4.5V, 10V
- Rds On (Max) @ Id, Vgs:
- 6mOhm @ 30A, 10V
- Vgs(th) (Max) @ Id:
- 3V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 38 nC @ 10 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 2220 pF @ 12.5 V
- FET Feature:
- -
- Power Dissipation (Max):
- 3W (Ta), 50W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-252 (DPAK)
AOD456A FAQ
1.How can I place an order for AOD456A through Aetrix?
Please submit a Request for Quotation (RFQ) for AOD456A 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 AOD456A reliable?
The price and inventory of AOD456A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOD456A is usually 5 days.
3.What payment methods are accepted for AOD456A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOD456A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOD456A?
AOD456A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOD456A 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 AOD456A?
For technical support, including AOD456A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOD456A requirements.
6.How does Aetrix verify that AOD456A is sourced from the original manufacturer or authorized distributors?
All AOD456A 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 AOD456A meets industry standards.
7.What is the process for return or replacement of AOD456A?
All AOD456A units undergo pre-shipment inspection (PSI). If there is an issue with AOD456A, 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 AOD456A part is unused and in its original packaging.
Return procedure for AOD456A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AOD456A Tags
-
BSZ180P03NS3EGATMA1
Infineon Technologies
-
SIRA14DP-T1-GE3
Vishay Siliconix
-
AO4419
Alpha & Omega Semiconductor Inc.
-
SISA14BDN-T1-GE3
Vishay Siliconix
-
PSMN9R5-30YLC,115
Nexperia USA Inc.
-
BUK9Y21-40E,115
Nexperia USA Inc.
-
RTQ035N03HZGTR
Rohm Semiconductor
-
FDMS7680
onsemi
-
RQ3E180BNTB
Rohm Semiconductor
-
STL6N2VH5
STMicroelectronics
-
DMPH4029LFGQ-7
Diodes Incorporated
-
DMT6015LSS-13
Diodes Incorporated
Tech Hub
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
