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Product Detailed Parameters
- Description：MOSFET N-CH 350V SOT89
- Series：-
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR)
- FET Type：N-Channel, Depletion Mode
- Technology：MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss)：350 V
- Current - Continuous Drain (Id) @ 25°C：140mA (Ta)
- Drive Voltage (Max Rds On, Min Rds On)：-
- Rds On (Max) @ Id, Vgs：35Ohm @ 140mA, 0V
- Vgs(th) (Max) @ Id：-
- Gate Charge (Qg) (Max) @ Vgs：-
- Vgs (Max)：-
- Input Capacitance (Ciss) (Max) @ Vds：200 pF @ 25 V
- FET Feature：-
- Power Dissipation (Max)：-
- Operating Temperature：-
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Supplier Device Package：SOT-89
- Package / Case：TO-243AA
Download product information
Overview
The CPC3730CTR is an N-channel depletion-mode vertical DMOS FET in a SOT-89 package. It features a drain-to-source breakdown voltage of 350 V and a maximum on-state resistance of 30 Ω at 25°C. The device operates within a temperature range of -55°C to +125°C with a total package dissipation of 1.6 W. Gate-to-source voltage ratings are ±20 V, and the saturated drain current is 140 mA. Switching characteristics include a turn-on delay of 20 ns and a fall time of 50 ns.
Feature Summary
- Depletion mode operation provides low on-resistance at cold temperatures
- High input impedance prevents thermal runaway
- Vertical DMOS process ensures robust high-voltage performance
Applications
- Ignition modules
- Normally-on switches
- Solid state relays
- Telecommunications power supplies
Procurement Notes
Verify the manufacturer designation as IXYS or Clare, as branding may vary across supply channels. Confirm the specific ordering suffix 'CTR' corresponds to the reel packaging format rather than tube distribution. Ensure the component meets RoHS compliance requirements for your assembly process. Cross-reference the datasheet revision R00B.2 for accurate electrical limits before finalizing procurement specifications.
Selection Notes
Select this component for applications requiring normally-on behavior without continuous gate drive power. The depletion mode characteristic is essential for fail-safe designs where the circuit must remain active upon signal loss. Evaluate the 30 ohm on-resistance against thermal constraints in cold environments where performance improves. Ensure the 350V breakdown voltage exceeds peak transient voltages in the target circuit topology.
Part Context
This device belongs to the CPC3730 series of solid-state relay components manufactured using third-generation vertical DMOS technology. It is designed for industrial and telecommunications applications requiring high reliability. The SOT-89 package allows for surface-mount integration while maintaining high voltage isolation capabilities typical of Clare's MOSFET portfolio.
Replacement Considerations
Direct substitutes include CPC3730C for tube packaging variants. Verify pinout compatibility between SOT-89 configurations when cross-referencing with other depletion-mode MOSFETs from different manufacturers.
