- Submounts are ceramic LED package bases which minimize thermal resistance between LED junctions and adjacent components
- By reducing junction temperatures, an LED will produce increased efficiency, brightness, color and reliability
- Each device is custom tailored to the customer’s specifications
- Submount materials include quartz, alumina, aluminum nitride, kovar and beryllium oxide.
- Applications include: heat sinks, standoffs, height matching, bonding pads, and jumpers.
- Custom sizes, patterns and shapes available to your design specifications in thicknesses from 3 to 100 mils and beyond.
Submount Material Properties Chart
| |
Quartz |
Alumina |
AIN |
Kovar |
BeO |
Si |
| Compex Material Code |
C-20 |
C-30/35 |
C-28 |
KVR |
C-25 |
C-22 |
| Coefficient of Thermal Expansion (ppm/°C) |
6 |
6.7 |
4.6 |
5.86 |
7.5 |
0.56 |
| Thermal Conductivity (W/m-K) |
1.6 |
26 |
170 |
17.3 |
270 |
1.38 (SiO2) |
Ordering information - SBT Series - Submounts
| SBT |
28 |
20 x 20 |
x 6 |
G |
S |
5 |
| Cap Style |
Material |
Length x Width (mils) |
Thickness (mils) |
Metallization |
Cut to Size |
Thickness Tolerance |
SBT = Edge-to-edge plated or bare
CSX = Custom patterned |
See Submount Material Properties Chart above |
|
3 to +100 mils |
G = Gold B = Bare Custom |
|
(only utilized if
<.001”;
figure represents tenths of a mil) |
Note: Standard dimensional tolerance is .001” for length, width, and thickness. Tighter Thickness tolerances down to .0002” are available. Example: Compex Series SBT, dielectric type C-28, .020” x .020” x .006”, gold, cut to size, .0005” thickness tolerance