Burn-in Thermal Interface Materials
Introduction
Indium Corporation offers:
- Heat-Spring® - Metal Thermal Interface designed to
fit your burn-in head to optimize performance.
- Adhesive TIM Tabs (made with Kapton®) – holds the
Heat-Spring® in place on the burn-in head.
(Kapton® is a registered trademark of DuPont)
- Solders - for evaporations and heaters in the stack up.
Heat-Spring®
- Repeated use saves time and money - can be inserted well over 1000 times, depending on the application design and process settings.
- Easy to use - just pick and place with tweezers or vacuum nozzle
- Clean - no messy residue
- Environmentally friendly - recyclable and reclaimable
Common alloys:
- Indalloy #4 - 99.99% Indium
- Indalloy #1E - 52In/48Sn
- Indalloy #3 - 90In/10Ag
- Indalloy #290 - 97In/3Ag
Note: When using gold or copper, custom cladding is available to act as a diffusion barrier
Common form factors:
- Squares 0.5", 1.0", 1.5", and 2.0"
- Rectangles
- Custom cross shapes
- Custom thicknesses for bare die and lidded applications
Attributes:
- Compliant
- High conductivity
- 86 W/mK
- Durable, many cycles
Material |
Thermal Conductivity
(W/mK) |
Flow Stress
(psi) |
Indium |
86 |
280 |
Copper |
385 |
4800 |
Lead |
35 |
1800 |
LMA |
20 |
- |
Grease |
2 |
- |
Cycling Tests:
Adhesive TIM Tab (made with Kapton®)
- Ensures that the metal thermal interface material is intimate with the burn-in head
- Can withstand temperatures up to 260°C (500°F)
- No residue
- Low-static
- Available in 3/4" or 1" discs (specialty sizes and shapes available upon request)
Solders
Solders for evaporators and heaters in the stack up
- Engineered melting temps for step soldering
- High conductivity alloys to help efficiency of design
Common Alloys:
Indalloy # |
Eutectic Melting Temperature |
Alloy Composition |
19 |
60 E |
51.0In/32.5Bi/16.5Sn |
1E |
118 E |
52.0In/48.0Sn |
281 |
138 E |
58.0Bi/42.0Sn |
290 |
143 E |
97.0In/3.0Ag |
201 |
199 E |
91.0Sn/9.0Zn |
238 |
217 E |
90.0Sn/10.0Au |
121 |
221 E |
96.5Sn/3.5Ag |
182 |
280 E |
80.0Au/20.0Sn |
183 |
356 E |
88.0Au/12.0Ge |
184 |
363 E |
96.8Au/3.2Si |
176 |
382 E |
95.0Zn/5.0Al |
186 |
424 E |
55.0Ge/45.0Al |
The Indium Advantage
We are committed to understand your unique needs for materials in your product and for your process. No
company offers a wider selection of alloys and solder forms to meet your needs. Our variety of alloys, ability to
fabricate and package these alloys into easy-to-use forms, and our decades of application knowledge are the
core values we bring to your company. Tap into this knowledge-base by calling one of our certified engineers at
1-800-4-INDIUM or visit www.indium.com.
