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Product Detailed Parameters
- Description：4V 10V 50MA 350MW SMD JFET N CHA
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Tape & Reel (TR)
- FET Type：N-Channel
- Voltage - Breakdown (V(BR)GSS)：40 V
- Drain to Source Voltage (Vdss)：40 V
- Current - Drain (Idss) @ Vds (Vgs=0)：50 mA @ 20 V
- Current Drain (Id) - Max：-
- Voltage - Cutoff (VGS off) @ Id：4 V @ 1 nA
- Input Capacitance (Ciss) (Max) @ Vds：14pF @ 20V
- Resistance - RDS(On)：30 Ohms
- Power - Max：350 mW
- Operating Temperature：-65°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23
- Grade：-
- Qualification：-
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Overview
The CMPF4391 TR PBFREE is an N-channel silicon JFET manufactured by Central Semiconductor Corp. It utilizes an epitaxial planar process and is housed in a surface-mount SOT-23 package. Key electrical parameters include a Drain-Source Voltage (VDS) of 40 V, a Gate-Source Voltage (VGS) of 40 V, and a maximum power dissipation (PD) of 350 mW at 25°C ambient temperature. The device features a thermal resistance (ΘJA) of 357 °C/W and operates within a junction temperature range of -65°C to +150°C. It is supplied in tape-and-reel packaging.
Feature Summary
- N-channel silicon field effect transistor designed for switching applications
- Epitaxial planar construction with epoxy molding
- Surface mount configuration in SOT-23 package
Applications
- General purpose switching circuits
- Low noise amplifier stages
- Analog signal routing
Procurement Notes
Verify the specific manufacturer part number against official Central Semiconductor documentation or authorized distributor listings. Confirm RoHS compliance status and lead times directly with the supplier. Ensure the ordering suffix matches the required reel quantity and packaging format for production integration.
Selection Notes
Select this component when an N-channel JFET with a 40V breakdown voltage and low power dissipation requirements is needed. Compare Idss characteristics and on-resistance values against circuit requirements. Verify that the SOT-23 footprint aligns with the PCB layout constraints and thermal management strategy.
Part Context
This component belongs to the Central Semiconductor CMPF439x series of surface mount N-channel JFETs. The series includes variants such as the CMPF4392 and CMPF4393, which share similar pinouts and maximum ratings but may differ in specific current gain or leakage specifications. These devices are intended for compact electronic designs requiring discrete JFET functionality.
Replacement Considerations
Direct substitutes within the same family include the CMPF4392 and CMPF4393. Cross-brand replacements should match the SOT-23 package, 40V VDS/VGS ratings, and N-channel configuration. Verify pinout compatibility and thermal resistance before implementation.
