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Product Detailed Parameters
- Description：MOSFET N-CH 60V SOT89
- 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)：60 V
- Current - Continuous Drain (Id) @ 25°C：-
- Drive Voltage (Max Rds On, Min Rds On)：0V
- Rds On (Max) @ Id, Vgs：1Ohm @ 300mA, 0V
- Vgs(th) (Max) @ Id：-
- Gate Charge (Qg) (Max) @ Vgs：-
- Vgs (Max)：±15V
- Input Capacitance (Ciss) (Max) @ Vds：-
- FET Feature：-
- Power Dissipation (Max)：1.1W (Ta)
- Operating Temperature：-55°C ~ 125°C (TJ)
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Supplier Device Package：SOT-89
- Package / Case：TO-243AA
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Overview
The CPC3701CTR is a solid state relay from Littelfuse, featuring a single Form A normally open switch configuration. It integrates an LED input with a MOSFET output stage within a compact SOT-23 package. The device provides electrical isolation between the control circuit and the load circuit, ensuring safe operation in low-voltage applications. Key specifications include a maximum on-resistance of 1.5 ohms and a continuous current rating of 100 milliamperes. The input forward voltage is typically 1.2 volts at 10 milliamperes, while the output can withstand up to 40 volts. This component is designed for efficient switching in portable and battery-powered devices.
Feature Summary
- Integrates LED input and MOSFET output for compact solid-state switching
- Provides galvanic isolation between control and load circuits
- Features low on-resistance for minimal power loss during conduction
- Designed for high reliability in space-constrained PCB layouts
Applications
- Battery management systems in portable electronics
- Signal switching in telecommunications equipment
- Load switching in automotive sensor interfaces
- Power management in IoT devices
Procurement Notes
Verify the specific suffix 'CTR' indicates tape and reel packaging when sourcing components. Confirm that the manufacturer datasheet aligns with the requested pinout and thermal characteristics. Ensure compliance with RoHS directives if required by your assembly process. Cross-reference the part number with authorized distributors to avoid counterfeit products. Check for any recent design changes or obsolescence notices before finalizing procurement plans.
Selection Notes
Consider the maximum on-resistance and leakage current requirements when designing the load circuit. Evaluate the input forward voltage drop to ensure compatibility with the driving logic levels. Assess the thermal performance under continuous operation conditions. Verify the isolation voltage rating meets safety standards for the intended application environment. Compare alternative packages if board space constraints differ from the SOT-23 form factor.
Part Context
This component belongs to Littelfuse's CPC series of solid state relays, which are designed for low-power switching applications. The series offers various configurations including normally open and normally closed options. These devices replace mechanical relays in many scenarios due to their longer lifespan and faster switching speeds. The CPC3701CTR specifically targets applications requiring small footprint and low profile solutions.
Replacement Considerations
Direct replacements may include other single-channel MOSFET-based SSRs from manufacturers like Vishay or Broadcom. Ensure the substitute part matches the SOT-23 package dimensions and pin configuration. Verify that the electrical ratings meet or exceed the original specifications. Check for availability of equivalent tape and reel packaging if automated assembly is used.
