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2N4393 PBFREE is listed in the Jfets range at ChipApex. The manufacturer field lists Central Semiconductor Corp. Its product description is JFET N-CH 40V TO18. Review the specifications below when checking this part for your BOM.
The Central Semiconductor Corp 2N4393 PBFREE is an N-channel silicon JFET designed for analog switching and chopper applications. It operates within a junction temperature range of -65°C to +175°C and features a maximum gate-drain voltage of 40V. Key electrical parameters include a drain-source saturation current (IDSS) ranging from 5.0mA to 30mA at VDS=20V, and a gate-source cutoff voltage (VGS(OFF)) between 0.5V and 3.0V. The device exhibits an on-resistance (rDS(ON)) of up to 100Ω at ID=1.0mA. Turn-on time is specified at a maximum of 15ns, while turn-off time reaches 50ns under specific bias conditions.
Verify the component matches the exact part number 2N4393 PBFREE when sourcing. Confirm that the ordering suffix indicates lead-free plating as specified in the manufacturer's documentation. Ensure the supplier provides valid traceability data consistent with Central Semiconductor Corp standards for this specific TO-18 packaged device.
Select the 2N4393 variant when a lower gate-source cutoff voltage is required compared to other members of the 2N4391 series. This model offers a minimum VGS(OFF) of 0.5V, making it suitable for low-voltage control logic interfacing. Evaluate the rDS(ON) specifications against circuit load requirements to ensure acceptable voltage drop during conduction states.
This component belongs to the 2N4391 series of N-channel silicon JFETs manufactured by Central Semiconductor Corp. The series includes variants differentiated primarily by their pinch-off voltage ranges. All models share identical maximum ratings and package configurations, allowing for flexible design integration based on specific threshold voltage needs.
Direct substitutes within the same family include the 2N4391 and 2N4392. Selection depends on matching the specific VGS(OFF) and IDSS ranges required by the circuit design. Verify pinout compatibility, as all series members utilize the standard TO-18 case with Source, Drain, and Gate lead assignments.
The maximum power dissipation is 1.8W when the case temperature is maintained at 25°C.
The primary difference lies in the electrical thresholds; the 2N4393 has a lower VGS(OFF) range (0.5V to 3.0V) compared to the 2N4391 (4.0V to 10V), while sharing identical physical packages and maximum ratings.
The turn-off time (toff) is specified as a maximum of 50ns when VGS(OFF) is 5.0V.
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