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Product Detailed Parameters
- Description：JFET
- Series：*
- Mfr：Microchip Technology
- Package：Tape & Reel (TR)
- FET Type：-
- Voltage - Breakdown (V(BR)GSS)：-
- Drain to Source Voltage (Vdss)：-
- Current - Drain (Idss) @ Vds (Vgs=0)：-
- Current Drain (Id) - Max：-
- Voltage - Cutoff (VGS off) @ Id：-
- Input Capacitance (Ciss) (Max) @ Vds：-
- Resistance - RDS(On)：-
- Power - Max：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
Download product information
Overview
The MX2N4856UB/TR is an N-channel Junction Field-Effect Transistor (JFET) manufactured by Microchip Technology. It utilizes silicon technology and is designed for surface-mount applications in a compact SMD-3 package. The device supports a drain-source voltage of 40 V and a gate-source breakdown voltage of 40 V. Key electrical characteristics include a maximum power dissipation of 360 mW, a continuous drain current of 175 mA at 15 V, and an on-resistance of 25 Ohms. It operates within a temperature range of -65°C to +200°C junction temperature.
Feature Summary
- Surface-mount construction in a small SMD-3 package for automated assembly
- High thermal stability with a maximum junction temperature rating of 200°C
- Military-grade qualification compliant with MIL-PRF-19500/385 standards
Applications
- High-reliability military and aerospace electronic circuits
- Low-noise analog signal amplification stages
- Precision constant-current source implementations
Procurement Notes
Verify the specific suffix UB/TR against official Microchip documentation to confirm the tape-and-reel packaging configuration and RoHS3 compliance status. Ensure that the ordering information matches the exact part number MX2N4856UB/TR to avoid discrepancies in package type or environmental certification during procurement.
Selection Notes
Select this component when a ruggedized JFET is required for high-temperature environments up to 200°C. The SMD-3 package facilitates automated surface-mount placement. Verify that the 40V breakdown voltage and 175mA current ratings align with the circuit requirements before finalizing the design.
Part Context
This part belongs to the 2N4856 series of N-channel JFETs produced by Microchip Technology. The series includes through-hole variants such as the 2N4856 and MX2N4856, which share similar electrical specifications but differ in physical mounting style. The MX2N4856UB/TR specifically adapts these characteristics for modern surface-mount manufacturing processes.
Replacement Considerations
Direct replacements include the MX2N4856 for through-hole applications or other 2N4856-series devices from Microchip. Verify pinout compatibility and package dimensions when substituting with equivalent parts from other manufacturers.
