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Alpha & Omega Semiconductor Inc. AOB470L
- Part No.:
- AOB470L
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- FETs, MOSFETs
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
AOB470L.pdf
- Description:
- MOSFET N-CH 75V 10A/100A TO263
- Quantity:
- Payment:
- Shipping:
Inventory:2,746
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Product details
Overview
AOB470L from Alpha & Omega Semiconductor is a 75V, 100A N-Channel MOSFET in TO-220 package, featuring <10.5mΩ RDS(ON) at VGS=10V, 100% UIS-tested ruggedness, and low gate charge (Qg=136nC). It serves as a high-current switching element in DC-DC converters, motor drives, and industrial load-switching circuits.
For engineers reviewing the AOB470L datasheet, pinout, applications, or equivalent options, key selection criteria include its 75V VDS, 100A continuous drain current at TC=25°C, 0.56°C/W junction-to-case thermal resistance, avalanche-rated construction, and TO-220 mechanical compatibility with standard heatsinks.
Technical Context
The AOB470L employs advanced trench-gate MOSFET technology to achieve low on-resistance while maintaining fast switching performance. Its 136nC total gate charge and 25nC gate-drain charge support efficient PWM operation at moderate frequencies, with 39ns rise time and 24ns fall time under standard test conditions (VGS=10V, VDS=30V, ID=30A).
Thermally, it delivers 268W power dissipation at TC=25°C with RθJC=0.56°C/W, and supports junction temperatures up to 175°C. The device includes 100% Rg screening and is rated for unclamped inductive switching with EAS up to 134mJ at TJ=25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 75V - Maximum blocking voltage for 24–48V bus applications with margin |
| ID (TC=25°C) | 100A - Continuous conduction capability with external heatsink |
| RDS(ON) (VGS=10V) | <10.5mΩ - Low conduction loss enabling <1W dissipation at 10A |
| Qg (10V) | 136nC - Gate drive energy requirement for 100kHz PWM with ~3Ω driver |
| EAS | 134mJ - Single-pulse avalanche energy rating for inductive load protection |
| RθJC | 0.56°C/W - Enables direct mounting to heatsink for high-power thermal management |
| tr/tf | 39ns/24ns - Fast switching transitions reducing overlap losses in hard-switched topologies |
Pinout & Package
AOB470L is housed in a through-hole TO-220 package with isolated tab (drain-connected), optimized for manual assembly and high-current PCB routing. Thermal pad is electrically connected to drain.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| G | Gate | Control terminal requiring 10V drive for full enhancement; 2.7V typical threshold |
| D | Drain | Main high-side current path; electrically tied to metal tab for thermal conduction |
| S | Source | Reference node for gate drive and current sensing; common return for load current |
Key Features
| Feature | Design Value |
|---|---|
| Advanced trench process | Enables <10.5mΩ RDS(ON) at 75V without sacrificing switching speed or ruggedness |
| 100% UIS tested | Guarantees robustness against inductive turn-off transients in motor and solenoid drivers |
| Low Qgd/Qg ratio | ~18.4% - Improves Miller immunity and enables stable operation with moderate gate resistors |
| Body diode with low Qrr | 143nC typical reverse recovery charge - Reduces commutation loss in synchronous rectification |
| High-temperature operation | Rated for 175°C max junction temperature - Supports sealed or high-ambient industrial environments |
Applications
| DC-DC Converter Primary Switch | Industrial Motor Drive Half-Bridge |
|---|---|
Use Scenario: High-efficiency 48V input buck converter delivering 20A to FPGA or ASIC core rails. IC Role / Device Role / Timing Role: Main high-side switching transistor controlled by PWM controller with 100kHz–500kHz frequency. Use Value: <10.5mΩ RDS(ON) minimizes conduction loss; 136nC Qg allows efficient gate driving with integrated controller outputs. |
Use Scenario: 3-phase BLDC driver stage operating from 48V battery in automated conveyor system. IC Role / Device Role / Timing Role: Upper-leg N-channel switch in half-bridge configuration, driven by isolated gate driver. Use Value: 100% UIS testing ensures reliability during regenerative braking; 0.56°C/W RθJC enables compact heatsink integration. |
| Server PSU OR-ing FET | High-Current Load Switch |
Use Scenario: Hot-swap and redundancy control in 12V/48V server power distribution units. IC Role / Device Role / Timing Role: Back-to-back configured N-MOSFET for bidirectional current blocking and controlled turn-on. Use Value: Low RDS(ON) reduces voltage drop across OR-ing path; 175°C rating supports high-density board layouts. |
Use Scenario: 100A main power switch for programmable logic controller (PLC) I/O module. IC Role / Device Role / Timing Role: Solid-state replacement for electromechanical relay, controlled via microcontroller GPIO. Use Value: TO-220 mechanical form factor simplifies retrofit; 100A rating exceeds typical PLC load requirements with safety margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-Channel MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STP110N75F7 | 75V, 110A, RDS(ON)=8.5mΩ @10V, TO-220, Qg=120nC | Lower RDS(ON) but higher body diode VSD (1.2V typ); no UIS rating specified | Preferred where lowest conduction loss dominates; requires external avalanche protection in inductive loads |
| IRF1405PBF | 55V, 169A, RDS(ON)=5.3mΩ @10V, TO-220, Qg=131nC | Lower voltage rating limits use to ≤40V systems; higher current rating but reduced safe operating area above 40V | Suitable only in 12–36V applications needing ultra-low RDS(ON); not drop-in for 48V+ designs |
Compared with STP110N75F7 and IRF1405PBF, the AOB470L provides balanced 75V rating, proven UIS ruggedness, and industry-standard TO-220 thermal performance-making it optimal for 48V industrial switching where reliability under transient stress is critical.
Availability
AOB470L is available at Aetrix Electronics and suitable for DC-DC converters, motor drives, and high-current load switching requiring stable component supply and long-term industrial availability.
Supply support for AOB470L 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 AOB470L belongs to AOS's high-current trench-MOSFET product line, engineered for efficiency-critical 48V-class power conversion and motor control applications demanding ruggedness and thermal stability.
FAQ
What is the maximum continuous drain current rating for AOB470L at 100°C case temperature?
The AOB470L supports 78A continuous drain current at TC=100°C, derated from its 100A rating at TC=25°C per the current de-rating curve on page 5 of the datasheet. This reflects bond-wire and thermal limitations, and must be validated with actual heatsink performance in the target application.
Does AOB470L have a fully rated avalanche capability, and what is its EAS value?
Yes, the AOB470L is 100% unclamped inductive switching (UIS) tested. Its single-pulse avalanche energy rating is 134mJ at TJ=25°C (L=0.3mH), as confirmed in the Absolute Maximum Ratings table. This makes AOB470L suitable for inductive load switching without external snubbers in many cases.
What is the gate threshold voltage range for AOB470L, and how does it affect drive circuit design?
The AOB470L has a gate threshold voltage (VGS(th)) range of 2.0V to 4.0V at ID=250μA. For reliable enhancement, gate drive must exceed 4.0V - typically 10V is used to ensure <10.5mΩ RDS(ON). Logic-level 3.3V or 5V drivers are insufficient without level-shifting or gate boosting.
Can AOB470L be used in synchronous rectification, and what body diode parameters support this?
Yes, the AOB470L supports synchronous rectification due to its low body diode forward voltage (VSD=0.7–1.0V at IS=1A) and moderate reverse recovery charge (Qrr=143nC typ). Its 37–70ns trr enables efficient operation up to ~200kHz in secondary-side switching, provided gate drive timing avoids shoot-through.
Is the TO-220 package of AOB470L lead-free and RoHS compliant?
Yes, the AOB470L TO-220 package is lead-free and RoHS compliant per AOS' standard manufacturing process, as documented in the "Environmental Information" section of the official AOS datasheet Rev 2.1 (May 2024). Full compliance documentation is available upon request from Aetrix Electronics.
AOB470L Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 75 V
- Current - Continuous Drain (Id) @ 25°C:
- 10A (Ta), 100A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 10.2mOhm @ 30A, 10V
- Vgs(th) (Max) @ Id:
- 4V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 136 nC @ 10 V
- Vgs (Max):
- ±25V
- Input Capacitance (Ciss) (Max) @ Vds:
- 5640 pF @ 30 V
- FET Feature:
- -
- Power Dissipation (Max):
- 2.1W (Ta), 268W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263 (D2PAK)
AOB470L FAQ
1.How can I place an order for AOB470L through Aetrix?
Please submit a Request for Quotation (RFQ) for AOB470L 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 AOB470L reliable?
The price and inventory of AOB470L are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOB470L is usually 5 days.
3.What payment methods are accepted for AOB470L?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOB470L transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOB470L?
AOB470L orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOB470L 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 AOB470L?
For technical support, including AOB470L datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOB470L requirements.
6.How does Aetrix verify that AOB470L is sourced from the original manufacturer or authorized distributors?
All AOB470L 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 AOB470L meets industry standards.
7.What is the process for return or replacement of AOB470L?
All AOB470L units undergo pre-shipment inspection (PSI). If there is an issue with AOB470L, 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 AOB470L part is unused and in its original packaging.
Return procedure for AOB470L:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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