SBOA433 March   2021 TMP451 , TMP461 , TMP461-SP , TMP464 , TMP468 , TMP4718 , TMP9R00-SP

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Series Resistance
    2. 1.2 Variation of η-Factor
    3. 1.3 Variation of Beta
  3. 2Transistor List
  4. 3BJT Test Board
  5. 4Test Procedure
  6. 5Data and Recommendations
  7. 6Summary

Summary

While many of the BJTs were able to achieve temperature errors within ±1.0 °C with optimized settings, the temperature range had to be limited for BJTs that had large variations at the high and low end of tested temperature range. Some BJTs could not be recommended because of large part to part variations throughout the tested temperature range. The MMBT3906LT1G, 2SCR523MT2L, BC847BFA_7B, and JANTX2N930 were able to stay with a ±1.0 °C temperature error across the entire temperature range. Too much device to device variation was observed to recommend on the MMBT3904FZ-7B, BC857BFA_7B, PMBT3904MB_315, PMST3904_115, MMBT2907, JANTX2N2946AA, and JANTX2N3501.

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