33000 Parallax Inc, 33000 Datasheet - Page 10

• Manufacturer Part Number: 33000
• Description: Power Management Modules & Development Tools 30W Solar Cell Kit
• Manufacturer: Parallax Inc

Specifications of 33000

• New! Us2012 Catalog Page: Solar Cells_Panels
• Voltage - Output: *
• Operating Temperature: *
• Current Short Circuit (isc): *
• Package / Case: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The tabbing wire MUST be soldered flat to the cell, with NO solder blobs or spikes anywhere
along the conductors. Blobs and spikes prevent the cell from being fully seated into the Base Panel,
not only preventing the Cover Panel from sealing tightly, but the cells can break during the gluing/seating
process much more easily. If you do get any spikes or blobs as you work, re-tin your iron with some
solder, add more flux to the contact area, and re-wipe across the connection to make everything smooth.
Note that a “break” is different than a “crack.” If at any point you break a cell, you’ll need to repair it
before proceeding (see page 19). However, if you happen to
don’t worry, just be extra careful with it and proceed with the process. Cracks do not appreciably
diminish the cell’s output power, so don’t stress over it.
Copyright © Parallax Inc.
Pre-tin your soldering iron with about
3/8” of solder. Gently wipe it across the
top of the tabbing wire in one smooth
motion (Figure 19). Be careful—don’t
push too hard on the cell. If the solder is
not melting to the cell, re-tin your
soldering iron and apply additional flux if
necessary. As you wipe the iron across
the cell, gently guide the wire to keep it
aligned with the cell’s conductor.
If you notice that the solder on your iron
is used up, stop and add a little more
solder to your iron tip and then continue
wiping the rest of the junction, slightly
overlapping the point where you stopped
so that no part of the wire is skipped. It
wouldn’t affect performance, but this
ensures that the wire is soldered as flat
to the cell as possible.
Solder another piece of tabbing wire to
the second conductive strip. You should
end up with something that resembles
Figure 20. You may need to add
additional solder to your iron tip as you
wipe across the cell. A proper solder
connection is made when you see the
pre-tinned solder (that’s already on the
flat wire) melting just slightly ahead of
your “wipe” across the cell.
Look closely at your solder connections
and make sure that they are as flat as
possible. If not, re-tin, add flux, and re-
wipe to smooth them out. Fixing
problems at this stage is much easier
than trying to fix them later.
Allow the cell to cool for about a minute before removing the tape. Slowly peel the tape off of the
cell, trying to not stress it in any way. When the cell is free, lift it by the two tabbing wires, and put
it in a safe place. Do not handle or flex the cell any more than you have to, until final assembly in
Section C below.
Repeat this tabbing wire procedure for eight more cells (for a total of nine).
30 Watt Solar Panel Kit (#33000)
crack
a cell but it’s still all in one piece,
Figure 19
Figure 20
v1.0 2/19/2010 Page 10 of 20