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Product Detailed Parameters
- Description：JFET N-CH 40V 3UB
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- 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 Microchip Technology 2N4091UB is a single N-channel Junction Field-Effect Transistor (JFET) manufactured using silicon technology. It is housed in a TO-18-3 metal can package designed for through-hole mounting. The device features a drain-source breakdown voltage of 40 V and a gate-source breakdown voltage of -40 V. At zero gate-source voltage, the drain current is specified at 30 mA, with an on-resistance of 30 Ohms. The component supports a power dissipation of 360 mW and operates within a temperature range from -65°C to +175°C.
Feature Summary
- Utilizes silicon JFET technology for robust semiconductor performance.
- Features a hermetically sealed TO-18-3 metal can package suitable for high-reliability environments.
- Designed for through-hole installation to support traditional circuit board layouts.
Applications
- High-temperature analog signal processing circuits
- Low-noise amplifier input stages
- Precision current source implementations
Procurement Notes
Verify the specific suffix 'UB' against the official Microchip datasheet to confirm exact binning or testing criteria. Ensure the procurement channel provides valid manufacturer traceability documentation. Confirm that the TO-18-3 package dimensions match the mechanical constraints of the target assembly. Validate RoHS compliance status as indicated in the product specifications before finalizing orders.
Selection Notes
Select this component when a single N-channel JFET with a 30 mA pinch-off current is required. The 40 V breakdown rating suits moderate voltage applications. Consider the TO-18-3 package if leaded mounting is mandatory. Compare the 30 Ohm on-resistance against circuit impedance requirements. Verify thermal management capabilities given the 360 mW dissipation limit and extended temperature range.
Part Context
The 2N4091 series represents a family of N-channel JFETs produced by Microchip Technology. Variants such as the MV2N4091 and MX2N4091 share similar electrical characteristics but may differ in packaging or qualification standards. The 2N4091UB specifically denotes the standard military or industrial grade version in the TO-18-3 case style, distinct from plastic encapsulated alternatives.
Replacement Considerations
Cross-reference with MV2N4091 for equivalent electrical performance in alternative packages. Check MX2N4091 for potential variations in manufacturing lot or testing parameters. Verify pinout compatibility for direct replacement in existing TO-18-3 footprints.
FAQ
What is the maximum operating temperature for the 2N4091UB?
The maximum operating temperature is +175°C.
Does the 2N4091UB use a plastic or metal package?
It uses a TO-18-3 metal can package.
What is the typical drain current at zero gate-source voltage?
The drain current at Vgs=0 is 30 mA.
