Datasheet

The above values are typical and represent no form of specification. The Data Sheet serves for information purposes. Any verbal or written advise is not binding for the
company, whether such information originates from the company offices or from a sales representative. This is also in respect of any protection rights of third parties, and
does not release the customer from the responsibility of verifying the products of the company for suitability of use for the intended process or purpose. Should any liability
on the part of the company arise, the company will only indemnify for loss or damage to the same extent as for defects in quality.
TDB_ME_ECOLOY_TSC305_EN.doc Page 2 of 2 Issue: 09.03.06
STANNOL GmbH
Oskarstraße 3-7 • 42283 Wuppertal • Tel. [phone] • Telefax [phone] • E-Mail [e-mail] • Web www.stannol.de
Wenn’s ums Löten geht
When it’s about soldering
Quand il s’agit du soudage
Physical and mechanical characteristics of ECOLOY
®
alloys compared to Sn63Pb37:
Characteristics S-Sn63Pb37
STANNOL
®
ECOLOY
®
TSC
(Sn95,5Ag3,8Cu0,7)
STANNOL
®
ECOLOY
®
TSC305
(Sn96,5Ag3,0Cu0,5)
Melting Point /
Melting Range, °C
183 217 217-224
Electrical
Conductivity, %IACS
11,9 13 13
Electrical Resistance,
µΩΩ cm
14,5 13 13
Brinell Hardness, HB 17 15 15
Density, g cm
-3
8,4 7,5 7,5
Recommended Conditions for Use
Wave Soldering
STANNOL
®
ECOLOY
®
TSC305
The low copper content is advantageous for wave soldering because longer operating times of the solder bath can be
achieved. By dissolving of copper from the PCB the copper content increases. Using ECOLOY
®
TSC305 means that it
takes longer until the critical limit of 1,0% is reached. The use of ECOLOY
®
TSC305 as wave solder requires a bath
temperature of approx. 265°C. Depending on PCB type and types of components, the optimum of the process
conditions must be determined The usage of inert gas brings a considerable extension of the process window. The
wetting of the solder will be easier, and there will be no excessive solder on the PCBs when leaving the wave.
Moreover the formation of dross will be minimised considerably.
Wave Soldering Fluxes
In general, all conventional fluxes like STANNOL
®
EF350 are suitable for the lead free soldering process. The flux solid
content should be high enough. Due to the increased preheating and wave temperature a better activity respectively
temperature stability is an enormous advantage. As a complete ecological solution VOC free fluxes like STANNOL
®
WF300S can be used. In this case the process requirements must be adjusted to the specific characteristics of the
water based flux..
Rework und Hand Soldering
The alloy STANNOL
®
ECOLOY
®
TSC305 is available as flux cored or solid solder wire. An adjusted flux content
assures a proper soldering for rework and repair. The temperature profiles, which were made for tin/lead/silver alloys,
must be adjusted due to the higher melting point (+ 34°C compared with Sn/Pb eutectic). In case that components or
PCBs have a lead containing coating, the solidus of the new alloy will be reduced to the solidus of the eutectic
Sn/Pb/Ag alloy.
Health and Safety
Detailed information about health, operational safety and disposal can be found in our material safety data sheets,
which are available upon request.