MX2N4858

$62.12

Description：JFET N-CH 40V TO18
Series：-

SKU:bfde7530f82c Category: JFETs Brand: Microchip Technology

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Product introduction

Product Detailed Parameters

Description：JFET N-CH 40V TO18
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)：80 mA @ 15 V
Current Drain (Id) - Max：-
Voltage - Cutoff (VGS off) @ Id：4 V @ 0.5 nA
Input Capacitance (Ciss) (Max) @ Vds：18pF @ 10V
Resistance - RDS(On)：-
Power - Max：360 mW
Operating Temperature：-65°C ~ 200°C (TJ)
Mounting Type：Through Hole
Package / Case：TO-206AA, TO-18-3 Metal Can
Supplier Device Package：TO-18 (TO-206AA)
Grade：Military
Qualification：MIL-PRF-19500/385

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MX2N4858

Overview

The MX2N4858UB is an N-channel Silicon Junction Field-Effect Transistor (JFET) manufactured by Microchip Technology. It utilizes a TO-18-3 metal can package designed for through-hole mounting. The device operates in depletion mode and serves as a small-signal component. Key electrical characteristics include a maximum drain-source voltage of 40 V, a gate-source voltage limit of -40 V, and a drain-gate voltage rating of 40 V. The part supports an operating temperature range from -65°C to +200°C.

Feature Summary

Constructed using silicon technology for reliable small-signal performance
Features a hermetically sealed metal can package suitable for harsh environments
Designed for high-temperature operation up to 200°C

Applications

High-reliability military and aerospace circuits
Low-noise analog signal amplification
Precision current source regulation

Procurement Notes

Verify the specific suffix designation, such as UB, against official datasheets to confirm exact binning and testing standards. Confirm RoHS compliance status as indicated in product specifications. Ensure the ordering quantity aligns with manufacturer factory pack requirements. Validate that the intended application environment falls within the specified thermal limits.

Selection Notes

Select this component when high-temperature stability and low noise are required in analog designs. The TO-18 package facilitates easy integration into legacy or radiation-hardened systems. Consider the 40V breakdown rating for appropriate biasing configurations. Evaluate thermal management needs given the wide operational temperature range.

Part Context

This JFET belongs to a family of devices equivalent to MIL-PRF-19500/385 specifications. Variants like 2N4857 and 2N4859 share similar structural characteristics but differ in voltage ratings and gain groupings. The MX prefix typically denotes a specific quality or screening level distinct from standard commercial equivalents.