BF245 - the legend is leaving, the successor comes

BF245, a JFET transistor produced for many decades by several companies, has joined the list of discontinued components. However an equivalent replacement exists in an SMT package and its name is BF545.

This is an archive article published 10/02/2012. Some information may no longer be up to date and in line with the current state. Please contact us in case of interest.

BF245 in a TO-92 package has been one of the first transistors, which were mass-used. That´s why it´s no wonder, that the BF 245 is nowadays familiar to every experienced technician. As a transistor with a very high input resistance (tens of MOhm) and a relativlely low noise, it´s gained a global popularity and served to many beginning technicians at an assembly of their first radio-receivers. There are many other FET transistors on the market nowadays, thus the usage of BF245 is substantially smaller. Moreover, a majority of electronics is produced with SMT components, what probably was one of more reasons why all main producers have discontinued the BF245.

However, BF245 is still an interesting transistor, that´s why it will be henceforward available in a SOT23 SMT package as the BF545. It is available in 3 groups A, B, C - sorted according to IDSS at VGS=0. Directly from our stock are available BF545A, BF545B and BF545C from company NXP (originally Philips). Detailed information can be found in the BF545 datasheet, as well as in the RF Manual document.

In case of interest, please contact us at info@soselectronic.com.

Advantages / Features:

  • high input impedance and gain
  • low cut-off voltage
  • low leakage current (fA)
  • suitable for impedance converters and VHF circuits

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Additional products


BF 245 A NXP  
BF 245 A

Transistor JFET N-Ch. 25mA/30V TO92

FET - Field Effect Transistors - Low-Power

Ord. No.: 13876
Manufacturer: NXP
No longer available
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