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The PN4393 is an N-channel Silicon Junction Field-Effect Transistor (JFET) manufactured by Central Semiconductor Corp. It features a single-element configuration housed in a TO-92 package with through-hole mounting. Key electrical parameters include a maximum drain-source voltage of 40 V, a gate-source cutoff voltage of 5 V, and a zero-gate-voltage drain current of 100 mA. The device has a maximum on-resistance of 100 Ohms and a power dissipation rating of 625 mW. Operating temperatures range from -65°C to +150°C.
Verify the specific lead finish designation, as the TIN/LEAD suffix indicates non-rohs compliant plating compared to PBFREE variants. Confirm the manufacturer part number against official Central Semiconductor documentation to ensure correct pinout and electrical tolerances. Check for updated datasheets regarding thermal resistance values and absolute maximum ratings before finalizing design integration.
Select this component when a discrete N-channel JFET with moderate drain current capability is required. The TO-92 package suits prototyping and low-volume through-hole designs. Compare the 100 mA drain current and 40 V breakdown voltage against circuit requirements. Ensure the 100 Ohm on-resistance meets impedance specifications for the intended analog or switching application.
The PN4393 belongs to the family of small-signal N-channel JFETs produced by Central Semiconductor. These devices are designed for general-purpose analog applications requiring high input impedance and low noise characteristics. The TO-92 form factor provides compatibility with standard axial-leaded PCB layouts and breadboard prototyping environments common in electronic development.
Publicly confirmed substitute part numbers for the PN4393 were not identified in the provided reference data.