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Product Detailed Parameters
- Description：JFET N-CH 40V UB
- Series：-
- Mfr：Microchip Technology
- 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)：30 mA @ 20 V
- Current Drain (Id) - Max：-
- Voltage - Cutoff (VGS off) @ Id：-
- Input Capacitance (Ciss) (Max) @ Vds：16pF @ 20V
- Resistance - RDS(On)：30 Ohms
- Power - Max：360 mW
- Operating Temperature：-65°C ~ 175°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：3-SMD, No Lead
- Supplier Device Package：UB
- Grade：-
- Qualification：-
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Overview
The MQ2N4091UB/TR is a single N-channel Junction Field-Effect Transistor (JFET) manufactured by Microchip Technology. It utilizes silicon technology and features an SMD/SMT installation style in an SMD-3 package. Key electrical parameters include a drain-source breakdown voltage of 30 V, a gate-source breakdown voltage of -30 V, and a continuous drain current of 175 mA. The device exhibits a typical on-resistance of 25 Ohms and supports a power dissipation of 1.8 W. It operates within a temperature range from -65 C to +200 C.
Feature Summary
- High-temperature operation capability up to 200 C
- Surface-mount compatible SMD-3 packaging
- Single N-channel JFET configuration
Applications
- High-temperature analog signal processing
- Low-noise amplifier circuits
- Precision current source applications
Procurement Notes
Verify the specific suffix designation against official Microchip documentation to confirm surface-mount availability and tape-and-reel packaging details. Ensure that the requested part number matches the exact electrical specifications required for high-temperature environments. Cross-reference the manufacturer's latest datasheet to validate pinout compatibility and thermal management requirements before procurement.
Selection Notes
Select this component when a surface-mount N-channel JFET with high thermal stability is required. The 1.8 W power dissipation rating and 200 C maximum operating temperature distinguish it from standard through-hole variants. Consider the 25 Ohm on-resistance and 175 mA current capacity for circuit design constraints. Verify package dimensions against PCB layout requirements.
Part Context
This part belongs to Microchip's JFET family, specifically designed for robust performance in demanding environments. The MQ2N series typically offers matched pairs or single units with tight parameter tolerances. The UB/TR suffix indicates a specific surface-mount variant optimized for automated assembly processes while maintaining the reliability standards associated with Microchip's semiconductor products.
Replacement Considerations
Direct substitutes may include other Microchip N-channel JFETs in SMD packages with similar voltage and current ratings. Verify thermal resistance and pinout compatibility before substitution. Consult the manufacturer's cross-reference guide for approved alternatives.
