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Product Detailed Parameters
- Description：MOSFET N-CH 250V SOT223
- Series：-
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- FET Type：N-Channel, Depletion Mode
- Technology：MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss)：250 V
- Current - Continuous Drain (Id) @ 25°C：-
- Drive Voltage (Max Rds On, Min Rds On)：0V
- Rds On (Max) @ Id, Vgs：2.5Ohm @ 300mA, 0V
- Vgs(th) (Max) @ Id：-
- Gate Charge (Qg) (Max) @ Vgs：-
- Vgs (Max)：±15V
- Input Capacitance (Ciss) (Max) @ Vds：230 pF @ 20 V
- FET Feature：-
- Power Dissipation (Max)：1.8W (Tc)
- Operating Temperature：-55°C ~ 110°C (TA)
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Supplier Device Package：SOT-223
- Package / Case：TO-261-4, TO-261AA
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Overview
The CPC3902ZTR is a 250V N-channel depletion-mode MOSFET manufactured by Littelfuse. It utilizes a proprietary third-generation process and is housed in a 4-pin (3+Tab) SOT-223 package with tape-and-reel packaging. The device features an on-resistance of 2.5 ohms, enabling efficient power control in compact designs.
Feature Summary
- N-channel depletion-mode operation for normally-on functionality
- Third-generation proprietary manufacturing process
- SOT-223 surface-mount package with thermal tab
Applications
- Power control circuits
- Circuit protection systems
- General-purpose switching applications
Procurement Notes
Verify the manufacturer designation, as the component is associated with both IXYS and Littelfuse due to corporate acquisitions. Confirm the specific datasheet version matches the required electrical characteristics. Ensure the SOT-223 package type aligns with PCB layout constraints. Validate that the depletion-mode characteristic meets the circuit design requirements before finalizing procurement.
Selection Notes
Select this component when a normally-on N-channel switch is required for high-voltage applications up to 250V. The 2.5-ohm on-resistance offers a balance between conduction loss and cost for moderate current levels. The SOT-223 package provides adequate thermal performance for surface-mount assembly. Verify that the depletion-mode behavior does not conflict with the system's default state requirements.
Part Context
This part belongs to the CPC series of power MOSFETs designed for robust performance in industrial and consumer electronics. The ZTR suffix indicates tape-and-reel packaging suitable for automated assembly processes. The component represents a standard solution for medium-power switching tasks requiring high voltage tolerance.
Replacement Considerations
Cross-reference with other 250V N-channel depletion-mode MOSFETs in the SOT-223 package. Verify pinout compatibility and thermal resistance values. Ensure the replacement device maintains the same on-resistance and gate threshold specifications to preserve circuit functionality.
