DP-DSG2 METCAL, DP-DSG2 Datasheet - Page 7

• Manufacturer Part Number: DP-DSG2
• Description: Desoldering Tool Assembly
• Manufacturer: METCAL

Specifications of DP-DSG2

• Accessory Type: Desolder Tool Assembly
• Peak Reflow Compatible (260 C): No
• Leaded Process Compatible: No
• For Use With: OK Internationals Metcal SP440-21 Desoldering Station
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

High throughput at low temperatures
Everyone claims their soldering iron offers the latest technology to help
you do your job better. But only Metcal Systems have demonstrated
superior performance and ease-of-use. In test after test, Metcal
provides unparalleled performance in a wide range of applications.
Joints soldered per hour at 625ºF
One of the key requirements in forming a strong solder joint is raising
the connection temperature to the proper level for the proper
amount of time. So, conventional soldering iron manufacturers
have spent a lot of time and energy on the accurate and precise
control of tip temperature.
However, this focus on controlling tip temperature to yield strong
solder joints assumes that perfect tip temperature control equals
perfect connection temperature. This is not necessarily the case!
Why? Because different solder joint loads require different
amounts of heat to reach the right connection temperature.
Even if you know exactly how much heat you have at the tip, you
don’t know how much each joint needs. Manufacturers should
focus on controlling how much heat is delivered to the solder joint,
but conventional technology limits their ability.
Controlling tip temperature to control connection temperature is
like controlling the speed of a car by the amount of pressure you
put on the gas pedal.
Of course, a very skilled operator can adjust the amount of heat
being delivered by varying the time on the pedal (dwell time) or
quickly changing pressure (tip temperature). In addition, if all the
solder joints were alike (like driving on a flat road with no wind
factors), controlling only tip temperature could effectively result
in a consistent joint.
To compensate for real-world demands, Metcal SmartHeat
Systems use a completely different technology. Instead of just
using the tip to store heat, Metcal tip cartridges sense the load and
instantly adjust power to quickly deliver the right amount of heat
precisely where it is needed.
SmartHeat is like cruise control for your car. Not only does it
vary the amount of gas (power) going to the engine (solder tip)
based on the speed (connection temperature) desired, but it has
an automatic, instantaneous braking system to ensure that you
never, ever go too fast (no overshoot). And, because SmartHeat
Systems can deliver high power you won’t run out of gas along
the way, even on the steepest hills.
What does this mean to you? You can solder faster at lower
temperatures with a Metcal than with any other iron. This can
mean substantial savings in production costs.
CONVENTIONAL A
CONVENTIONAL B
CONVENTIONAL C
114
135
176
233
®
the power of SmartHeat
Production cost savings at US$40.00 per hour
Number of solder joints per board: 50
Boards/Month
Number of solder joints per board: 100
Boards/Month
Number of solder joints per board: 150
Boards/Month
Want us to run an analysis of your operations? Simply call your
local Metcal distributor or representative and ask for a “Value
Analysis” demonstration.
How SmartHeat technology works
SmartHeat heaters consist of two basic elements: a constant current
power supply and a heating element. The radical difference
between it and standard heaters is that the heating element itself
is capable of seeking and maintaining a predetermined temperature.
The basic design of SmartHeat devices can be conceptually
simplified as a solid cylinder made of two materials: a copper core
with an outer layer of a special magnetic alloy. This cylinder is
surrounded by a coil of fine wire.
When a high-frequency alternating current passes through the coil,
a useful physical phenomenon occurs – the current flow becomes
confined to the magnetic alloy skin of the device. Known as the
“skin effect”, this phenomenon serves the purpose of driving the
current primarily through the high resistance magnetic layer,
causing rapid heating.
When the coil is energized, current flows only
As the outer layer reaches a certain temperature (predetermined by
its constituent elements), another physical phenomenon occurs:
the layer loses its magnetic characteristics. This temperature,
called the Curie Point of the magnetic material, causes the skin
effect to decrease, permitting the migration of current into the
highly conductive core. Since the overall resistance to current flow
is considerably decreased by both the low-resistance path of the
inner core and the greater cross-sectional area through which the
current travels, and the power supply provides a constant current,
overall power consumption decreases proportionally to the
reduction in resistance.
The copper core conducts heat to the joint.
250
500
1000
250
500
1000
250
500
1000
in the outer layer, which heats up rapidly.
Annual Hours Saved
Annual Hours Saved
Annual Hours Saved
83
166
334
166
334
666
249
498
1002
Annual Savings (US$)
Annual Savings (US$)
Annual Savings (US$)
$3,320
$6,640
$13,360
$6,640
$13,360
$26,640
$9,960
$19,920
$40,080
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