Solder Ribbon

Solder Ribbon & Solder Foil

Solder Ribbon is supplied in continuous lengths and is packaged on spools. Solder Foil is supplied in sheet form.

Solder Ribbon and Solder Foil Features & Benefits

High quality Solder Ribbon and Foil manufactured by Indium Corporation is available in many standard alloys and sizes. Material can also be custom made to your unique material and dimensional requirements.

Solder Ribbon Dimensions

Whether you are looking for large quantities of Solder Ribbon in specific widths and thicknesses for automatic die bonding, or a few feet to do testing, Indium Corporation can accommodate your needs.

Our capabilities allow us to manufacture widths as small as .020" (.5mm) and up to 3" (76mm). Thicknesses range from .001" (.025mm) up to as thick as your application requires. All dimensions are dependent on the properties of the metals involved.

We can work with you on your specific dimensional requirements. Our typical tolerances are:

Width
Up to .099" (2.5mm) +/-.010" (.254mm)
.100" to .999" (2.54mm to 25.37mm) +/-.025" (.635mm)
Over 1.00" (25.4mm) +/-.040" (1.01mm)
Thickness
Up to .001" (.025mm) ±.0002" (.005mm)
.001" (.025mm) to .002" (.050mm) ±.0003 (.0076mm)
>.002" (.050mm) to .010" (.254mm) ±.0005" (.0127mm)
>.010" (.254mm) to .020" (.508mm) ±.0010" (.0254mm)
> .020" (.508mm) to .050" (1.27mm) ±.0025" (.0635mm)
>.050" (1.27mm) ±5%

Solder Preforms Shelf Life

The shelf life of solder preforms is dependent on the alloy composition. Pb-free alloys, and alloys with lead content of less than 70%, have a shelf life of one year from the date of manufacture (DOM). Alloys with lead content >70% have a shelf life of six months from the DOM.

Solder Foil Dimensions

For applications requiring material wider than 3", we make solder foil sheets in sizes up to 144 square inches. We also can custom-cut sheets in larger sizes or special shapes.

Standard tolerances on foil dimensions are +/-.062" (1.57mm) on the width and the length and +/- .001" (.025mm) on the thickness.

Available Alloy Materials

Whether you require pure metal such as indium, tin, gold, lead, etc. or an alloy, we can accomodate your needs. Indium Corporation has over 200 standard pure metals and alloys available, or we can design an alloy just for you. In addition, our standard alloy list includes a large selection of lead-free alloys.

Several of our more popular alloys are listed below. If you don’t see what you need, try our Solder Alloy Selector Guide to see what alloys will suit your needs.

Liquidus
(°C/°F)		 Solidus
(°C/°F)		 Indalloy®
Number		 Comp-
osition		 Mass
Density
(gm/
cm3)		 Electrical
Cond.
(% of Cu)		 Thermal
Cond.
W/cm°C
@ 85°C		 Thermal
Cond.
W/cm°C
@ 20°C		 Thermal
Coef.
of
Expan-
sion
µ in/in°C
@ 20°C		 Tensile
Strength
(PSI)		 Bond
Holding
Strength
(Shear)
(PSI)
118/244 118/244 1E 52In
48Sn		 7.29 9.08 0.41   14.0 3100 1630
138/281 138/281 281 58Bi
42Sn		 8.56 4.5   0.16 15.0 11700 500
143/290 143/290 290 97In
3Ag		 7.38 23.00   0.84 38.0 1200 -
154/309 149/300 2 80In
15Pb
5Ag		 7.85 13.00   0.53 22.0 3370 2150
157/315 157/315 4 100In 7.31 24.00   0.83 30.89 386 890
167/333 154/309 9 70Sn
18Pb
12In		 7.79 12.20 0.45   24.0 5320 4190
175/347 165/329 204 70In
30Pb		 8.19 8.80   0.38 28.0 3450 -
179/354 179/354 SN62 62Sn
36Pb
2Ag		 8.41 11.90 0.45   27.0 10910 7540
181/358 173/343 205 60In
40Pb		 8.52 7.00 0.29   23.0 4150 -
183/361 183/361 SN63 63Sn
37Pb		 8.39 11.50 0.48   25.0 8720 6200
210/410 184/363 7 50In
50Pb		 8.86 6.00   0.22 27.0 4670 2680
221/430 221/430 121 96.5Sn
3.5Ag		 7.36 16.00 0.33   24.0 5690 2700
232/450 232/450 128 100Sn 7.28 15.60 0.73   25.0 2800 -
260/500 240/464 10 75Pb
25In		 9.97 4.60   0.31 29.0 5120 3520
280/536 280/536 182 80Au
20Sn		 14.51 - 0.57   15.0 40000 40000
356/673 356/673 183 88Au
12Ge		 14.67 - 0.44   13.0 26800 26825
1064/
1948		 1064/
1948		 200 100Au 19.30 73.4 3.18   14.0 20000  

Solder Ribbon Storage

Store Solder Ribbon and Foil in the original container, closed securely, in 55%RH or less and at temperatures less than 22°C. It can also be stored in an inert atmosphere, such as a nitrogen dry box.

Alloy & Ribbon Packaging

We have developed standard packaging for various alloys and ribbon widths. However, if you have specialized needs such as spool size, quantity per spool, or other requirements, we can meet your unique specifications.

Each order can be shipped with a Certificate of Analysis which includes information on metallic impurities. We can also provide a Certificate of Conformance when Solder Ribbon and Foil is made to customer specifications.