The Sn42In58 indium solder wire features a tin content of 47.5~48.5% and minimal impurities (less than 0.2g). The wire features excellent weldability and oxidation resistance, making ideal for both wave soldering and dip soldering processes. Due to the high purity of the material, it provides outstanding fluidity during the soldering process and is widely used for die-attach applications.
Indium Solder wire factory from China , Offer all kinds of solder products .
Indium Solder wire,Solder bar
Specifications
Item
Specification
Standard
Appearance
Smooth surface, no impurity
Alloy composition
S-Sn48In52
GB/T 20422-2006
Liquidus temperature
About 118℃
DSC method
Sp. Gr.
7.31g/cm3
Tolerance of wire diameter
0.3-0.8±0.03mm; 0.8-2.5±0.05mm
GB/T 20422-2006
Application
Suitable for welding electronic parts
Package weight
By mutual agreement
GB/T 20422-2006
Preservation method
Must be placed in a dry, non-corrosive environment without sunlight. Warranty for 2 years.
Attachment of temperature-sensitive components to printed circuit boards
Step soldering, when a secondary, lower temperature reflow process is required after a standard SAC soldering process is completed
Eliminating warpage of thinner chips due to high-temperature reflow
Low melting or low-Tg flex circuitry which are used in cellphones, smartwatches, and many internet-of-things (IoT) devices
Large area array devices – such as BGAs – to avoid head-in-pillow (HIP) and non-wet-open (NWO) failures
Durafuse LT
Indium Corp has invented a new low-temperature solder paste called Durafuse LT. This new alloy reflows at 200°C and uses a novel solder alloy process to bring mid-temperature solder properties into the upper edge of the low-temperature space. This provides greater drop shock and thermal cycling performance as compared to the typical BiSnAg alloys currently on the market.
Older legacy low-temp options are brittle and tend to crack when stressed, which make them unsuitable for many applications. Durafuse LT is more robust and increases durability in drop shock, not just incrementally, but by a significant measure. In fact, under the right process conditions, Durafuse LT’s performance is comparable to SAC305.
Other low-temperature alloys include:
Indalloy #
Liquidus (°C)
Solidus (°C)
Element 1
%
Element 2
%
Element 3
%
Element 4
%
1E
118
118
In
52.0
Sn
48.0
1
125
118
In
50.0
Sn
50.0
71
131
118
Sn
52.0
In
48.0
281
138
138
Bi
58.0
Sn
42.0
282
140
139
Bi
57.0
Sn
42.0
Ag
1.0
290
143
143
In
97.0
Ag
3.0
87
145
118
Sn
58.0
In
42.0
203
150
125
In
95.0
Bi
5.0
88
150
150
In
99.3
Ga
0.7
225
151
143
In
90.0
Sn
10.0
90
152
152
In
99.4
Ga
0.6
91
153
153
In
99.6
Ga
0.4
2
154
149
In
80.0
Pb
15.0
Ag
5.0
92
154
154
In
99.5
Ga
0.5
4
157
157
In
100.0
204
175
165
In
70.0
Pb
30.0
205
181
173
In
60.0
Pb
40.0
231
186
174
Sn
86.5
Zn
5.5
In
4.5
Bi
3.5
227
187
175
Sn
77.2
In
20.0
Ag
2.8
226
187
181
Sn
83.6
In
8.8
Zn
7.6
Low-Temperature Solder Applications
In addition to soldering, Indium Corp provides low-temperature solutions for thermal management, hermetic sealing, fusible alloys, eye glass lens blocking, and more.
Thermal Management
Alloy systems that are liquid at room temperature have a high degree of thermal conductivity, far superior than ordinary non-metallic liquids. This allows for the use of these materials in specific heat-conducting applications, such as heat dissipation in sensitive components during operation, machining, and/or manufacturing.
Other advantages of these liquid alloy systems are their inherent electrical conductivity. Typical applications for these materials include thermostats, switches, barometers, heat transfer systems, and thermal cooling and heating designs.
Hermetic Sealing
Some sealing operations use pure indium and require no heat at all. The sealing process uses mechanical pressure to create the bond. The softness and malleability of indium, in addition to its ability to retain these characteristics at cryogenic temperatures, allows it to fill in imperfections in mating surfaces to create a hermetic seal.
Fusible Alloys
Low-temperature or fusible alloys are commonly used in a variety of safety devices where they are designed to melt at a peak temperature to initiate a process. Eye glass lens blocking is another application where low-temperature or fusible alloys work well. The lens is held in place using a block of the alloy, which is then easily removed with hot water.
Some common fusible alloys are:
Indalloy
Property
117
158
160-190
217-440
255
281
Property
Indalloy 117
Indalloy 158
Indalloy 160-190
Indalloy 217-440
Indalloy 255
Indalloy 281
Melting Point or Range Deg/F
117
158
160-190
217-440
255
281
Weight lbs/in3
.32
.339
.341
.343
.380
.315
Tensile Strength lbs/in2
5,400
5,990
5,400
13,000
6,400
8,000
Brinell Hardness No.
12
9.2
9
19
10.2
22
Maximum Load 30 sec lbs/in2
—
10,000
9,000
16,000
8,000
15,000
Safe Load Sustained
—
300
300
300
300
500
Conductivity (Electrical) Compared with Pure Copper
3.34%
4.17%
4.27%
2.57%
1.75%
5.00%
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