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Alpha & Omega Semiconductor Inc. AOKS40B65H1
- Part No.:
- AOKS40B65H1
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- Single IGBTs
- Package:
- TO-247-3
- Datasheet:
-
AOKS40B65H1.pdf
- Description:
- IGBT 650V 40A TO247
- Quantity:
- Payment:
- Shipping:
Inventory:9,000
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Product details
Overview
AOKS40B65H1 from Alpha & Omega Semiconductor is a 650V, 40A discrete IGBT in TO-247 package, optimized for high-frequency switching in power factor correction and solar inverters. It features 1.9V VCE(sat) at TJ=25°C, 63nC total gate charge, and 0.46mJ turn-off energy at 175°C with 7.5Ω gate resistor.
For engineers reviewing the AOKS40B65H1 datasheet, pinout, applications, or equivalent options, key selection criteria include short-circuit ruggedness (5µs, 256A), soft turn-off behavior, EMI performance, and thermal resistance of 0.5°C/W junction-to-case - critical for compact, high-efficiency industrial converters.
Technical Context
The AOKS40B65H1 implements Alpha's αIGBT technology with controlled di/dt during turn-on and low tail current during turn-off, enabling high-speed operation without excessive voltage overshoot. Its dynamic parameters are characterized under inductive load conditions at VGE=15V, VCC=400V, IC=40A, and RG=7.5Ω across TJ=25°C to 175°C.
It supports short-circuit withstand capability up to 5µs at VGE=15V and VCC≤300V, with maximum junction temperature rated at 175°C. The device exhibits 129pF output capacitance (Coes) and 64pF reverse transfer capacitance (Cres) at VCE=25V, contributing to predictable switching behavior in hard-switched topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCE Rating | 650V breakdown voltage - enables use in 400V DC bus systems with 50% voltage margin for transients |
| IC (TC=100°C) | 40A continuous collector current - defines thermal design basis for heatsink sizing at 100°C case temperature |
| VCE(sat) (TJ=25°C) | 1.9V saturation voltage - sets conduction loss floor of ~76W at 40A, directly impacting efficiency in PFC stages |
| Eoff (TJ=175°C) | 0.46mJ turn-off energy - determines switching loss contribution in high-frequency inverter designs above 20kHz |
| RθJC | 0.5°C/W junction-to-case thermal resistance - allows direct calculation of junction temperature rise above heatsink temperature |
| tSC | 5µs short-circuit withstand time - defines minimum fault-clearing window for protection circuitry in UPS and welding applications |
| Qg | 63nC total gate charge - determines required gate driver peak current and influences gate loop layout sensitivity |
Pinout & Package
Package: TO-247 (3-pin, straight lead, isolated tab). Thermal pad electrically connected to collector (C). Mounting screw hole centered on tab.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Left) | Collector (C) | Main high-side power terminal; electrically tied to metal tab - requires isolation from heatsink unless system ground referenced |
| Pin 2 (Center) | Gate (G) | Control input; sensitive to ESD and ringing - requires low-inductance gate resistor (7.5Ω typical) and local decoupling |
| Pin 3 (Right) | Emitter (E) | Power return path and gate reference; must be low-impedance connection to source of gate driver and sense resistor |
Key Features
| Feature | Design Value |
|---|---|
| αIGBT Turn-on di/dt Control | Enables stable high-frequency operation without external snubbers in PFC boost stages |
| Soft Turn-off Behavior | Reduces voltage overshoot and EMI generation during commutation in inverter half-bridges |
| Short-Circuit Ruggedness | Withstands 5µs faults at 256A - simplifies protection design in welding and UPS systems |
| Low Cres (64pF) | Minimizes Miller-induced false turn-on risk in high-dV/dt environments like motor drives |
| 175°C Maximum Junction Temperature | Supports compact thermal design with reduced heatsink mass in space-constrained solar inverters |
Applications
| Power Factor Correction | Solar Inverters |
|---|---|
Use Scenario: Boost-stage switching in 3kW–5kW AC-DC front-ends for server PSUs and industrial SMPS. IC Role / Device Role: High-voltage, high-current switching element in continuous conduction mode (CCM) boost converter. Use Value: 1.9V VCE(sat) and 0.46mJ Eoff enable >98% efficiency at 100kHz switching while maintaining thermal headroom. | Use Scenario: DC-AC inversion stage in string inverters handling 600–1000V DC input. IC Role / Device Role: Upper-leg IGBT in three-phase NPC or T-type inverter topology. Use Value: 650V rating and soft turn-off reduce dv/dt stress on PV-side capacitors and improve system reliability under partial shading. |
| UPS Systems | Welding Machines |
Use Scenario: Online double-conversion UPS with bidirectional inverter/rectifier stages operating at 16–20kHz. IC Role / Device Role: Output inverter switch delivering clean 50/60Hz sine wave under dynamic load steps. Use Value: Short-circuit ruggedness (5µs, 256A) allows safe operation during output short events without desaturation circuit complexity. | Use Scenario: Inverter-based arc welding power supplies requiring rapid current modulation at 20–50kHz. IC Role / Device Role: Primary switching device in resonant or hard-switched inverter driving transformer primary. Use Value: High di/dt controllability and low Etotal (1.73mJ) support precise arc current regulation with minimal thermal cycling stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar IGBT switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IXYS IXGN40N60B3 | 600V rating, higher VCE(sat) (2.2V), slower tf (30ns vs. 14ns) | Limited to ≤400V DC bus; less suitable for high-frequency PFC where softness and speed matter | Prefer AOKS40B65H1 when 650V margin, lower losses, or tighter EMI control are required |
| Infineon IKP40N65ES5 | 650V rating, higher Eoff (0.72mJ), larger RθJC (0.65°C/W) | Higher thermal resistance demands larger heatsink; elevated switching loss reduces efficiency above 25kHz | Choose AOKS40B65H1 for space-constrained, high-efficiency designs needing <0.5°C/W thermal path |
Compared with IXGN40N60B3 and IKP40N65ES5, the AOKS40B65H1 delivers superior high-frequency performance via lower VCE(sat), faster fall time, and softer turn-off - directly enabling smaller magnetics, reduced EMI filtering, and higher power density in PFC and inverter stages.
Availability
AOKS40B65H1 is available at Aetrix Electronics and suitable for power factor correction, solar inverters, and UPS systems requiring stable component supply, consistent parametric performance, and long-term industrial availability.
Supply support for AOKS40B65H1 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 industrial, computing, and consumer markets.
The Alpha IGBT™ product line targets high-efficiency, high-frequency power conversion systems - specifically engineered for soft switching, low EMI, and rugged short-circuit operation in PFC, UPS, and renewable energy inverters.
FAQ
What is the maximum gate-emitter voltage rating for AOKS40B65H1?
The AOKS40B65H1 has an absolute maximum gate-emitter voltage (VGE) of ±30V. Operation beyond this range risks permanent gate oxide damage. Recommended gate drive is +15V for turn-on and –5V to –10V for turn-off to ensure robust noise immunity and prevent unintended conduction. This rating is confirmed in the Absolute Maximum Ratings table on page 1 of the official AOS datasheet Rev. 1.0.
Does AOKS40B65H1 include an integrated anti-parallel diode?
No, the AOKS40B65H1 is a discrete IGBT without an integrated freewheeling diode. External diode selection - such as a fast-recovery or SiC Schottky - must be made based on application requirements including reverse recovery Qrr, forward voltage, and thermal coupling. The datasheet explicitly references "diode (AOK40B65H1) reverse recovery" in switching energy notes, confirming separate diode usage.
What is the short-circuit withstand capability of AOKS40B65H1?
The AOKS40B65H1 supports short-circuit operation for up to 5µs at VGE=15V, VCC≤300V, and TJ≤175°C, with a peak short-circuit current of 256A. This is specified in the Absolute Maximum Ratings table and validated in Figure 11–17 switching characterization. Exceeding 5µs or applying >300V during fault increases risk of irreversible failure.
Can AOKS40B65H1 be used in parallel configurations?
Yes, AOKS40B65H1 supports paralleling due to its positive temperature coefficient of VCE(sat), which promotes current sharing across devices. Successful implementation requires matched gate drive impedance, symmetrical PCB layout, and individual gate resistors. Thermal coupling between devices must also be minimized to avoid thermal runaway - verified in AOS application note AN-9003 for Alpha IGBT paralleling guidelines.
What is the recommended gate resistor value for AOKS40B65H1 in a 20kHz solar inverter application?
For a 20kHz solar inverter application, a gate resistor of 7.5Ω is recommended - matching the test condition used in the datasheet's switching parameter tables (e.g., tD(off), Eoff). This value balances switching loss (0.46mJ Eoff) and EMI control. Lower values increase di/dt and EMI; higher values raise losses. Layout parasitics must be minimized regardless of RG choice to maintain stability.
AOKS40B65H1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Series:
- Alpha IGBT™
- Package/Case:
- TO-247-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- IGBT Type:
- -
- Voltage - Collector Emitter Breakdown (Max):
- 650 V
- Current - Collector (Ic) (Max):
- 80 A
- Current - Collector Pulsed (Icm):
- 120 A
- Vce(on) (Max) @ Vge, Ic:
- 2.4V @ 15V, 40A
- Power - Max:
- 300 W
- Switching Energy:
- 1.27mJ (on), 460µJ (off)
- Input Type:
- Standard
- Gate Charge:
- 63 nC
- Td (on/off) @ 25°C:
- 41ns/130ns
- Test Condition:
- 400V, 40A, 7.5Ohm, 15V
- Reverse Recovery Time (trr):
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-247
AOKS40B65H1 FAQ
1.How can I place an order for AOKS40B65H1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AOKS40B65H1 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 AOKS40B65H1 reliable?
The price and inventory of AOKS40B65H1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOKS40B65H1 is usually 5 days.
3.What payment methods are accepted for AOKS40B65H1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOKS40B65H1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AOKS40B65H1?
AOKS40B65H1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AOKS40B65H1 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 AOKS40B65H1?
For technical support, including AOKS40B65H1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOKS40B65H1 requirements.
6.How does Aetrix verify that AOKS40B65H1 is sourced from the original manufacturer or authorized distributors?
All AOKS40B65H1 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 AOKS40B65H1 meets industry standards.
7.What is the process for return or replacement of AOKS40B65H1?
All AOKS40B65H1 units undergo pre-shipment inspection (PSI). If there is an issue with AOKS40B65H1, 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 AOKS40B65H1 part is unused and in its original packaging.
Return procedure for AOKS40B65H1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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