BF545A / BF545B

Provides switching, rectification or protection depending on its technology.

Tutorial / documentation

Transistors & diodes

Quick documentation & first test preparation

  1. Identify component BF545A and its package.
  2. Identify the terminals and polarity of the selected package.
  3. Check voltage, current, dissipation and drive conditions.
  4. Consult the application circuit in the linked documentation before testing.

BF545A

5mA Idss, 30V Vgs, N-Channel JFET, SOT-23

  • 5mA Idss, 30V Vgs, N-Channel JFET, SOT-23
  • Identify the terminals and polarity of the selected package.
  • Check voltage, current, dissipation and drive conditions.
  • The manufacturer’s pinout and absolute limits take precedence over this page.
Technical documentation

BF545B

15mA Idss, 30V Vgs, N-Channel JFET, SOT-23

  • 15mA Idss, 30V Vgs, N-Channel JFET, SOT-23
  • Identify the terminals and polarity of the selected package.
  • Check voltage, current, dissipation and drive conditions.
  • The manufacturer’s pinout and absolute limits take precedence over this page.
Technical documentation