artisan 8640B - Etched Circuit Soldering Equipment; Examples of Diode and Transistor Marking Methods

TM 9-4935-601-14-7&P
Model 8640B
Figure 8-2. Examples of Diode and Transistor Marking Methods
Table 8-1. Etched Circuit Soldering Equipment
Item Use Specification Item Recommended
Soldering tool Soldering, unsoldering Wattage range: 37-50; Tip Temp:
750-800°
Ungar #766 handle
w/*Ungar#1237 heating
unit
Soldering Tip Soldering, unsoldering *Shape: pointed *Ungar#PL111
De-soldering
Aid
To remove molten solder
from connection
Suction device Soldapullt by Edsyn Co.,
Arleta, California
Resin (flux)
Solvent
Remove excess flux from
soldered area before
application of
Must not dissolve etched circuit
base board
Freon; Acetone; Lacquer
Thinner
protective coating
Solder Component replacement
Circuit board repair Wiring
Resin (flux) core, high tin content
(60/40 tin/lead), 18 gauge (SWG)
preferred
Protective Contamination, corrosion
protection
Good electrical insulation; corrosion
prevention properties -
Silicone Resin such as
GE DRI- FILM**88
* For working on circuit boards: for general purpose work, use Ungar No. 4037 Heating Unit (471/2-561/2W)
tip temperature of 850-900 degrees) and Ungar No. PL113 1/8" chisel tip.
** General Electric Co., Silicone Products Dept., Waterford, New York, U.S.A.
8-4
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