Vectronics VEC-1402K - Manual (Page 12)

VEC-1402K Instruction Manual 2 Meter Pre-Amp Kit
10
the bottom of the board, fold both tabs over onto the foil, securing the
shield can in place. Solder the tabs and leads.
Important Note: Q1 is a rugged bipolar device that has good immunity to static
discharge. However, if you are working in a carpeted area, it's always a good
idea to touch a metal ground before handling semiconductors.
! ! 14. Find Q1, a 2SC2498 transistor with a black plastic case.
! ! 15. Note that Q1 has a round and a flat side. Carefully insert the three
leads of Q1 into the three mounting holes provided. Make sure that
the transistor body is properly keyed to the silk-screened outline--if
you insert the transistor incorrectly, it may be damaged when power is
applied. To ensure stable preamp operation and best gain, the body of
Q1 should sit as close to the PC board as possible. If needed, gently
pre-form the leads so the bottom of the transistor is positioned
approximately .15" (or 1/8") above the surface of the board. Longer
leads may impair performance.
2SC2498
(C2498)
! ! 16. Once you're satisfied each lead is properly oriented and the transistor
is mounted correctly, solder Q1 in place.
At this point, your kit is finished and it's time to take a well-earned break! When
you come back, be prepared to give your work a close "quality control"
inspection before moving on to the testing and alignment section.