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Home >
Application >
Laser
> Heat Spreaders > Composite Diamond Heat
Spreaders |
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Composite Diamond
Heat Spreaders |
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Composite Diamond
Heat Spreaders for
Thermal management
solutions
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Composite Diamond
Heat Spreaders have a thermal
conductivity of 600 W/mK and an
average CTE(coefficient of thermal
expansion) of 3.0 in the range of
20-300°C.
Therefore, Composite Diamond as a
heat spreader material is
intermediate between CVD diamond (Diafilm
TM) and other heat spreading
materials, such as AlN and Cu.
Composite Diamond Heat Spreader
material is produced by high
temperature, high pressure sintering
of small diamond particles to form a
homogenous integrown diamond lattice
structure. The fine grain structure
and uniform distribution of the
binder makes this material ideal for
heat spreader applications. It can
be used for |
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devices with small
heat sources, such
as laser diodes (Lds),
laser diode arrays (LDAs)
and high power light
emitting diodes (LEDs).
The surface of
Composite Diamond
Heat Spreaders can
be polished to a
high degree of
surface quality and
flatness. Based on
well controlled,
high precision laser
cutting, excellent
edge qualities can
be achieved, which
is required for edge
emitting laser
diodes and laser
diode arrays.
Thermal expansion of
Composite Diamond
Heat Spreaders
versus temperature. |
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Advantages
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High CTE
(3.0ppm/K) to
enable low
stress mounting
of large InP and
GaAs chips.
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Excellent
surface
roughness and
edge quality.
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High flatness
specification
available (down
to 1μm/10mm).
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Large areas
available.
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Good
performance/price
ratio.
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Broad range of
metallisations
available.
General
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Material
available with
high quality
thin film
coatings
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Metallisation
recommended:
Ti/Pt/Au/Pt/Au
(100/120/3000/120/200nm)
for Indium soft
solder
applications or
Ti/Pt/Au
(100/120/300nm)
all sides plus
Ti/TiN/Ti/AuSn/Au
(40/120/40/3000/50nm)
on top face for
hard soldering.
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Technical
support for the
use of solder
materials and
solder
processes.
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Cleanroom class
100 compatible
manufacturing
and packing.
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Generic drawings
available for
technical
detail.
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Sample products
on stock for
customer
evaluation.
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In this section
CVD Diamond Heat
Spreaders
AlN Heat
Spreaders
Thermal Material
Properties
ADC
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