WS-929A
Stazione di Saldatura
9
Product description
The WS929A electronic temperature control soldering station has been developed to meet
the present and future needs of the electronics industry. It incorporates a sophisticated
electronic circuit which enables the user to change the tip temperature from 320°F (160°C)
to 900°F (480°C) without the need to change the tip or heating element. The temperature
is maintained within ± 10°F of its preset temperature. This is made possible by a unique
temperature sensor that is located near the tip. Resulting in rapid response and little
temperature variation. The tip of the unit is isolated from the AC line by a transformer. Low
voltage (24 volts) is utilized to power the heating element – Completely electronic
switching protects voltage and current sensitive components against transient spikes
sometimes caused by other units utilizing mechanical switching circuits. This unit
incorporates a linear LED array readout which accurately indicates the temperature of the
tip
Working temperature
Soldering at the correct temperature is very important to ensure perfect solder connection.
If the temperature is too low the solder will not flow correctly and will cause cold solder
joints. If the temperature is too high the flux will be burned and not allow the solder to flow.
High temperature can also cause damage to the PC Boare and other sensitive
components. When tip working temperature is set within the correct parameters suited to
the particular solder being used a good joint is assured.
The most common solder alloys used in the electronics industry is 60% tin, 40% lead
(60/40).
A common tip working temperature of 60/40 solder is detailed below (this may vary from
manufacturer to manufacturer):
Melting point
419°F (215°C)
Normal operation
518°F-572°F (215°C-300°C)
Production line operation
608°F-716°F (320°C-380°C)
Desoldering operation for
small joint
599°C (315°C)
Desoldering operation for
larger joint
752°F (400°C)
