HCAS
SERIES
TM
POWER TYPE
Ceramic Encased Wire Wound Resistors
Surface Mount - Fire Retardant
SURFACE MOUNT RESISTORS
CERAMIC ENCASED TYPE
C
A
HTR
TYPE
C2S 3.94 5.84 5.21
C3S 3.94 5.97 11.94
A B C
For the guidance of the design engineer, our applications laboratory has given the recommended pad size and
geometry which is shown below :
IMPORTANT MOUNTING / ASSEMBLY DATA
B
L1
TT
L
HW
W1
H
SIDE VIEW PROFILE
PHYSICAL CONFIGURATION
TYPICAL
WT PER
PC (gms)
DIMENSIONS (mm) RESISTANCE
RANGE
min
max
H
(+0.3)
W
(+0.5)
W1
(+0.3)
T
(+0.25)
HTR
TYPE
POWER
RATING
70°C
L
(+0.8)
L1
(+0.5)
C2S 2W 11.0 10.0 5.0 7.0 5.5 2.5 R10 2K0 1.0 4527
C3S 3W 17.0 16.0 7.5 7.0 5.5 2.5 R10 5K6 2.0 6927
SIZE
DIMENSIONS (mm)
Inorganic Fire
Retardant Encapsulant
Flame Proof
High Temperature
Ceramic Housing
Terminals
Suitable For
Re-Flow Soldering
TM
HCAs
ELECTRICAL AND ENVIRONMENTAL CHARACTERISTICS / DATA
100
120
80
40
040 80 120 160 200 240 275
Rated Power [%]
Ambient Temperature [°C]
DERATING CURVE
70°C
TOLERANCE
RESISTANCE VALUE
HTR TYPE
SERIES
HCAS R10 HC2S
ORDERING INFORMATION
C3S
C2S
SURFACE MOUNT RESISTORS
CERAMIC ENCASED TYPE
Performance Requirements
Test
Resistance tolerance +10% [K]; +5% [J]; +3% [H];
+2% [G] +1% [F]
Ambient operating temperature range -55°C to +155°C
full power at 70°C
Insulation resistance >1000 Mega Ohm
Thermal shock Max DR +[0.5% + R05]
Short time overload Max DR +[2% + R05]
Dielectric withstanding voltage Max DR +[2% + R05]
Load life Max DR +[5.0% + R05]
Temperature co-efficient +100 ppm/ °C [>10R]
of resistance +80 ppm/ °C [<10R]
+450 ppm/ °C [<1R0]
Flame test Specification laid down by UL
have been met satisfactorily
TEMPERATURE RISE CURVE
Temperature rise in °C
0.5 1.0 1.5 2.0 2.5 3.0
0
50
100
150
200
Power in watts
C3S
C2S
60
20
Note : Due to recent technological advances, the ceramic cases used may be steatite ceramic or corderite
ceramic or high alumina ceramic depending on the nature of the application. Hence the ceramic cases may be
off-white or variations of brown and variations of grey; colours which are inherent to these ceramic materials.
