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4391DFN Series


4391DFN Series Single, Low Noise, N-Channel JFET Switch is a direct replacement for the Siliconix-Vishay equivalent part. It is ideal for Low Noise, High Gain, Low resistance Switching and Amplifier Applications. Available in the DFN 8L RoHS, TO-92 3L RoHS, TO-18 3L RoHS and SOT-23 3L RoHS package, as well as bare die.

Advanced screening options are available for our diverse product lineup, featuring JFETS, Bipolar transistors, MOSFETs, current regulators, and Diodes. Our special screening covers all the parameters listed in the standard datasheet, including comprehensive package pin-out.


Connect with our experienced technical team to discuss your specific needs and tailor your requirements—email us at or call (510) 490-9160. MOQ applies to these specialized services.

Ordering Information

Below are the options you have when ordering this part series:

  • PN4391 TO-92 3L RoHS

  • PN4392 TO-92 3L RoHS

  • PN4393 TO-92 3L RoHS

  • 2N4391 TO-18 3L RoHS

  • 2N4392 TO-18 3L RoHS

  • 2N4393 TO-18 3L RoHS

  • SST4391 SOT-23 3L RoHS

  • SST4392 SOT-23 3L RoHS

  • SST4393 SOT-23 3L RoHS

  • 2N4391 DIE

  • 2N4392 DIE

  • 2N4393 DIE

4391DFN Series
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