Part Details for AO4438 by Alpha & Omega Semiconductor
Results Overview of AO4438 by Alpha & Omega Semiconductor
- Distributor Offerings: (1 listing)
- Number of FFF Equivalents: (0 replacements)
- CAD Models: (Request Part)
- Number of Functional Equivalents: (0 options)
- Part Data Attributes: (Available)
- Reference Designs: (Not Available)
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AO4438 Information
AO4438 by Alpha & Omega Semiconductor is a Power Field-Effect Transistor.
Power Field-Effect Transistors are under the broader part category of Transistors.
A transistor is a small semiconductor device used to amplify, control, or create electrical signals. When selecting a transistor, factors such as voltage, current rating, gain, and power dissipation must be considered, with common types. Read more about Transistors on our Transistors part category page.
Price & Stock for AO4438
| Part # | Distributor | Description | Stock | Price | Buy | |
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Chip 1 Exchange | INSTOCK | 499 |
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Part Details for AO4438
AO4438 CAD Models
AO4438 Part Data Attributes
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AO4438
Alpha & Omega Semiconductor
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Datasheet
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AO4438
Alpha & Omega Semiconductor
Power Field-Effect Transistor, N-Channel, Metal-oxide Semiconductor FET
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| Rohs Code | Yes | |
| Part Life Cycle Code | Obsolete | |
| Ihs Manufacturer | ALPHA & OMEGA SEMICONDUCTOR LTD | |
| Reach Compliance Code | compliant | |
| ECCN Code | EAR99 | |
| Samacsys Manufacturer | Alpha & Omega Semiconductors | |
| Configuration | SINGLE | |
| Drain Current-Max (ID) | 8.2 A | |
| FET Technology | METAL-OXIDE SEMICONDUCTOR | |
| Number of Elements | 1 | |
| Operating Mode | ENHANCEMENT MODE | |
| Operating Temperature-Max | 150 °C | |
| Polarity/Channel Type | N-CHANNEL | |
| Power Dissipation-Max (Abs) | 3.1 W | |
| Surface Mount | YES |
AO4438 Frequently Asked Questions (FAQ)
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The maximum junction temperature of the AO4438 is 150°C. However, it's recommended to keep the junction temperature below 125°C for reliable operation.
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To ensure proper biasing, connect the gate-source voltage (Vgs) to a voltage source that is within the recommended range of 2V to 4V. Also, ensure the drain-source voltage (Vds) is within the recommended range of 10V to 30V.
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To minimize thermal resistance, use a PCB layout with a large copper area connected to the drain pin (D) and a thermal via connecting the drain pin to a heat sink or a thermal pad. This helps to dissipate heat efficiently.
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Yes, the AO4438 is suitable for high-frequency switching applications up to 1MHz. However, ensure that the gate drive circuitry is designed to provide a fast rise and fall time to minimize switching losses.
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Use a voltage regulator or a voltage clamp to limit the voltage across the drain-source pins. Additionally, use a current sense resistor and a comparator to detect overcurrent conditions and shut down the device if necessary.