LIQUID
COOLED
HEATSINK
CP Series
Cold Plate Four-pass Heatsink
FeatureS
The Ohmite CP4 series Liquid Coldplates are
Designed for Ohmite products, Pre drilled hole pat- designed for Ohmite heatsinkable type resistors,
terns for standard Ohmite planar resistors TAP600/ such as TAP600, TAP800, TA1K0, TA2K0, and vari-
TAP800 and TAP1K0/TAP2K0. ous SOT-227 resistor packages. The CP series also
provides maximum heat removal for SCRs, rectifiers,
Design flexibility, Chill Plate lengths can be config-
diodes, thyristors, and other high-power semicon-
ured as well as mounting hole patterns to accept a
ductor devices. The CP series is customizable to fit
multitude of devices.
multiple applications. Length and mounting hole pat-
Thermal efficient design, Exposed copper tubing
terns can be specified.
on the mounting surface for the most efficient heat
transfer.
SerieS SPeCiFiCatiONS
Mounting Surface Weight Ohmite Resistor Thermal
2 2
Part Number Area (in /mm ) (oz/g) Series Resistance* (C/W)
CP4-114A 19.13/12339 28.4/805 0.43
CP4-114B 19.13/12339 28.4/805 TAP600/TAP800 0.43
CP4-114C 19.13/12339 28.4/805 TAP1K0/TAP2K0 0.43
* @ flow of 1.5 GPM
CharaCteriStiCS
Copper, 0.375 OD, nominal wall thickness of 0.050
Tubing
Plate Aluminum 6063-T5
Weight 805 g
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2
THERMAL
MANAGEMENTLIQUID
COOLED
HEATSINK
CP Series
Cold Plate Four-pass Heatsink
heat DiSSiP atiON
0.7 5
0.6
4
0.5
3
0.4
0.3
2
0.2
1
0.1
0 0
0 0.5 1 1.5 2 2.5
Water Flow Rate (gpm)
DimeNSiONS
CP4A-114A-108E CP4A-114B-108E CP4A-114C-108E
#8-32 UNC
3/8" #8-32 UNC
tapped
(2mm) tapped
3.0" REF.
thru-hole 4x .265"
thru-hole
(76.2mm)
(4 places) (6.73mm)
(2 places)
4x .265"
4x .265"
(6.73mm)
(6.73mm)
2.000".032 2.000".032
2.000".032
4.500" REF.
(50.8mm) (50.8mm)
(50.8mm)
(114.3mm)
2.24"
(56.9mm)
1.0" REF.
3.70"
C (25.4mm) C C
L
L L
(95.0mm)
5.450".032
3.70"
(138.4mm)
(94.0mm)
4.250" REF.
5.450".032
(108mm)
(138.4mm)
6.0" REF.
0.750" REF.
(152.4mm)
(19.1mm)
hOw tO OrDer
CP4A-114A-108E
Cold Four Length Hole Pattern Width RoHS
Plate Pass (mm) A = no holes (mm) Compliant
B = TAP600/800
C = TA1K0/TA2K0
(assigned sequentially
for custom patterns)
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3
Overall Thermal Resistance,
Mtg. Surface to Inlet Water(C/w)
Pressure Drop (psi)
THERMAL
MANAGEMENT