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Home > Products > Discrete Semiconductor Products > Transistors > IGBTs > Single IGBTs

Alpha & Omega Semiconductor Inc. AOTS40B65H1

Name: AOTS40B65H1
Brand: Alpha & Omega Semiconductor Inc.
SKU: AOTS40B65H1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AOTS40B65H1

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: Single IGBTs

Package:: TO-220-3

Datasheet:: AOTS40B65H1.pdf

Description:: IGBT 650V 40A TO220

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Product details

Overview

AOTS40B65H1 from Alpha & Omega Semiconductor is a 650V, 40A trench-gate field-stop IGBT optimized for high-frequency switching in power factor correction and solar inverters. It delivers 1.9V V_CE(sat) at T_J=25°C, 130ns t_D(off), and 0.46mJ E_off under 400V/40A/7.5Ω gate drive, enabling efficient operation in welding machines and UPS systems.

For engineers reviewing the AOTS40B65H1 datasheet, pinout, applications, or equivalent options, key selection criteria include short-circuit ruggedness (5µs, 256A), soft turn-off behavior, low EMI signature, and thermal resistance of 0.5°C/W junction-to-case - critical for compact, high-power-density designs.

Technical Context

The AOTS40B65H1 employs Alpha's αIGBT technology with field-stop trench structure to achieve high di/dt controllability and low conduction loss. Its gate threshold voltage (V_GE(th)) ranges from 4.9V to 10V across –40°C to 175°C, ensuring stable turn-on margin under wide temperature variation.

Switching performance is characterized by 36ns t_r and 14ns t_f at 25°C, with total gate charge Q_g = 63nC and gate-to-emitter charge Q_ge = 18nC - enabling fast, controllable transitions while minimizing driver power demand.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CE	650V breakdown voltage - supports DC-link operation up to 450V bus in 3-phase PFC and solar inverters.
I_C (T_C=100°C)	40A continuous collector current - enables rated output power without forced air cooling in TO-247 package.
V_CE(sat) (T_J=25°C)	1.9V saturation voltage - reduces conduction loss to ~76W at 40A, improving system efficiency over competing 650V IGBTs.
t_SC	5µs short-circuit withstand time - allows robust protection response in welders and UPS during fault conditions.
R_θJC	0.5°C/W junction-to-case thermal resistance - supports >240W power dissipation at T_C=100°C in TO-247 mounting.
E_off (T_J=175°C)	0.8mJ turn-off energy - enables high-frequency operation (>30kHz) with manageable thermal load in compact heatsinks.
Q_g	63nC total gate charge - determines minimum gate driver peak current (≥8.4A @ 7.5Ω, 15V) for full switching control.

Pinout & Package

Package: TO-247 (3-pin, straight lead, insulated tab). Mounting surface is electrically isolated from collector terminal.

Pin/Terminal	Circuit Role	Design Meaning
Collector (C)	Main high-side power switch node	Connected to DC-link positive; carries full load current and must be thermally coupled to heatsink via insulated mounting.
Gate (G)	Control input for IGBT channel	High-impedance MOS-controlled terminal requiring <±30V rating and low-inductance gate loop layout to suppress oscillation.
Emitter (E)	Power return and reference node	Serves as common source for gate drive and current sense; requires Kelvin connection for accurate V_CE(sat)-based protection.

Key Features

Feature	Design Value
Field-stop trench IGBT architecture	Enables simultaneous optimization of V_CE(sat), switching speed, and short-circuit ruggedness - not achievable with planar or NPT structures.
Soft turn-off characteristic	Reduces voltage overshoot and EMI emissions during commutation, eliminating need for snubbers in many 10–50kHz applications.
Low C_res (64pF)	Minimizes Miller-induced turn-on risk and improves gate drive stability under high dv/dt conditions in bridge configurations.
175°C maximum junction temperature	Supports operation in sealed enclosures or high-ambient environments (e.g., industrial welders) without derating below 40A.
1000-cycle short-circuit capability	Allows repeated fault testing and enables use in safety-critical UPS where transient overloads are expected.

Applications

Power Factor Correction (PFC)	Solar Inverters
Use Scenario: Boost-stage switching in 3kW–5kW single-phase PFC front-ends operating at 30–100kHz. IC Role / Device Role / Timing Role: High-side switch controlling inductor current to shape AC input current waveform. Use Value: Low E_off (0.46mJ @ 25°C) and soft switching reduce filter size and audible noise while maintaining >98% efficiency.	Use Scenario: DC–AC H-bridge stage in string inverters with 400–600V DC input and 50/60Hz output. IC Role / Device Role / Timing Role: Main inverter switch handling bidirectional reactive power flow and grid synchronization. Use Value: 650V V_CE rating and 175°C T_Jmax allow direct use without series stacking, simplifying topology and reducing BOM count.
Uninterruptible Power Supplies (UPS)	Industrial Welding Machines
Use Scenario: Online double-conversion UPS delivering clean 230V/50Hz output with <5ms transfer time and battery backup. IC Role / Device Role / Timing Role: Inverter switch in high-efficiency resonant or PWM-based output stage. Use Value: Short-circuit ruggedness (5µs, 256A) ensures reliable operation during output faults without desaturation circuit complexity.	Use Scenario: Inverter-based arc welding equipment requiring precise current control at 10–20kHz switching frequency. IC Role / Device Role / Timing Role: Primary power switch modulating transformer primary current to regulate arc voltage and heat input. Use Value: High di/dt controllability and low V_CE(sat) enable tight current regulation with minimal thermal drift across duty cycles.

Power Factor Correction (PFC)

Solar Inverters

Use Scenario: Boost-stage switching in 3kW–5kW single-phase PFC front-ends operating at 30–100kHz.

IC Role / Device Role / Timing Role: High-side switch controlling inductor current to shape AC input current waveform.

Use Value: Low E_off (0.46mJ @ 25°C) and soft switching reduce filter size and audible noise while maintaining >98% efficiency.

Use Scenario: DC–AC H-bridge stage in string inverters with 400–600V DC input and 50/60Hz output.

IC Role / Device Role / Timing Role: Main inverter switch handling bidirectional reactive power flow and grid synchronization.

Use Value: 650V V_CE rating and 175°C T_Jmax allow direct use without series stacking, simplifying topology and reducing BOM count.

Uninterruptible Power Supplies (UPS)

Industrial Welding Machines

Use Scenario: Online double-conversion UPS delivering clean 230V/50Hz output with <5ms transfer time and battery backup.

IC Role / Device Role / Timing Role: Inverter switch in high-efficiency resonant or PWM-based output stage.

Use Value: Short-circuit ruggedness (5µs, 256A) ensures reliable operation during output faults without desaturation circuit complexity.

Use Scenario: Inverter-based arc welding equipment requiring precise current control at 10–20kHz switching frequency.

IC Role / Device Role / Timing Role: Primary power switch modulating transformer primary current to regulate arc voltage and heat input.

Use Value: High di/dt controllability and low V_CE(sat) enable tight current regulation with minimal thermal drift across duty cycles.

Equivalent & Alternatives

The following parts are listed as comparable options for similar IGBT switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IXYS IXGH40N60B3D1	600V rating, higher V_CE(sat) (2.2V), slower t_f (40ns), no specified t_SC	Limited to ≤400V DC-link; unsuitable for 650V-rated solar inverters or high-voltage PFC.	Select when cost sensitivity outweighs voltage headroom and short-circuit robustness requirements.
Infineon IKP40N65ES5	650V rating, similar V_CE(sat) (1.85V), but higher E_off (1.1mJ @ 175°C), no soft-switching emphasis	Higher switching loss increases heatsink size in high-frequency welding or UPS designs.	Prefer for lower-cost industrial motor drives where EMI and softness are less critical than raw conduction efficiency.

Compared with IXGH40N60B3D1 and IKP40N65ES5, the AOTS40B65H1 offers superior short-circuit ruggedness, lower E_off, and softer turn-off - making it optimal for high-reliability, high-frequency, and EMI-sensitive applications where thermal and electrical stress margins are constrained.

Availability

AOTS40B65H1 is available at Aetrix Electronics and suitable for power factor correction, solar inverters, and industrial welding machines requiring stable component supply and consistent parametric performance across production batches.

Supply support for AOTS40B65H1 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 Alpha IGBT™ product line targets high-efficiency, high-frequency power conversion systems - specifically engineered for reduced switching loss, enhanced ruggedness, and simplified gate drive in PFC, inverter, and welding applications.

FAQ

What is the maximum gate-emitter voltage rating for AOTS40B65H1?

The AOTS40B65H1 has a maximum gate-emitter voltage rating of ±30V, as specified in its Absolute Maximum Ratings table. Exceeding this limit risks permanent gate oxide damage. For reliable operation, gate drive circuits should clamp V_GE within –10V to +15V, with transient spikes suppressed using Zener clamps or active gate control. This rating applies across the full –55°C to 175°C junction temperature range.

Does AOTS40B65H1 include an integrated anti-parallel diode?

No, the AOTS40B65H1 is a discrete IGBT without an integrated anti-parallel diode. External freewheeling diodes - such as ultrafast or SiC Schottky types - must be used in inductive switching applications like PFC and inverters. The device's soft turn-off behavior helps reduce reverse recovery stress on the companion diode, but diode selection remains independent and application-specific.

What is the short-circuit withstand capability of AOTS40B65H1?

The AOTS40B65H1 supports 5µs short-circuit withstand time at V_GE=15V, V_CC≤300V, and T_J≤175°C, with up to 1000 allowed events spaced >1 second apart. This capability is validated per JEDEC JESD47 and enables robust overcurrent protection in UPS and welding systems without requiring complex desaturation detection circuitry in all cases.

Can AOTS40B65H1 be mounted directly to a heatsink without electrical isolation?

No - the AOTS40B65H1 in TO-247 package features an electrically insulated tab, but the collector terminal is internally connected to the mounting surface. Therefore, direct metal-to-metal mounting requires either an electrically isolating thermal pad or ceramic washer. Failure to isolate will short the collector to chassis ground, causing immediate device failure and potential system damage.

How does junction temperature affect V_CE(sat) in AOTS40B65H1?

V_CE(sat) in the AOTS40B65H1 increases with junction temperature: from 1.9V at 25°C to 2.63V at 175°C (typical). This positive temperature coefficient enables current sharing in parallel configurations and provides inherent thermal stability. Designers must account for this rise when calculating conduction losses at full-load, high-temperature operation - especially in sealed or high-ambient environments.

AOTS40B65H1 Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: Alpha IGBT™

Package/Case:: TO-220-3

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-220

AOTS40B65H1 FAQ

1.How can I place an order for AOTS40B65H1 through Aetrix?

Please submit a Request for Quotation (RFQ) for AOTS40B65H1 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 AOTS40B65H1 reliable?

The price and inventory of AOTS40B65H1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AOTS40B65H1 is usually 5 days.

3.What payment methods are accepted for AOTS40B65H1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AOTS40B65H1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AOTS40B65H1?

AOTS40B65H1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AOTS40B65H1 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 AOTS40B65H1?

For technical support, including AOTS40B65H1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AOTS40B65H1 requirements.

6.How does Aetrix verify that AOTS40B65H1 is sourced from the original manufacturer or authorized distributors?

All AOTS40B65H1 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 AOTS40B65H1 meets industry standards.

7.What is the process for return or replacement of AOTS40B65H1?

All AOTS40B65H1 units undergo pre-shipment inspection (PSI). If there is an issue with AOTS40B65H1, 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 AOTS40B65H1 part is unused and in its original packaging.

Return procedure for AOTS40B65H1:

1.Submit a request within 90 days.

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

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