Burn-in and Test

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	-

Resistance: Baseline of Burn-in TIMs	Thermal Resistance of Metal TIMs
View Full Size Chart	View Full Size Chart

Cycling Tests:

12 mil 90In/10Ag Cycling Tests
View Full Size Chart

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 Corporation Advantage

We are committed to understanding 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.