HCA/HCV
SERIES
POWER TYPE
WIRE WOUND RESISTORS
CERAMIC ENCASED TYPE
Ceramic Encased Wire Wound Resistors
Fire Proof
C-1A 1W 13.0 5.5 5.5 0.8 35 R05 2K7 1.4
C-1
3W 22.0 8.0 8.0 0.8 45 R05 11K 3.8
C-5 5W 22.0 9.5 9.5 0.8 45 R05 11K 5.1
C-7 7W 35.0 9.5 9.5 0.8 55 R05 30K 7.8
C-10 10W 48.0 9.5 9.5 0.8 70 R05 43K 10.8
C-15 15W 48.0 12.5 12.5 1.0 70 R05 43K 17.8
C-20 20W 63.5 12.5 12.5 1.0 85 R10 56K 22.0
0
(25 C)
1W 15.0 7.5 6.5 0.8 35 R05 4K7 1.9
C-2 2W 17.5 7.5 7.0 0.8 40 R05 7K5 2.5
C-3
0
(25 C)
HTR
TYPE
POWER
RATING
at 70°C
L
+1.5 H
+1
DIMENSIONS (mm)
d
+0.05
RESISTANCE
RANGE
min max
TYPICAL
WT.
PER PC
(gms)
W
+1
LM
+1
Very high degree of insulation
Low surface temperature
1 W to 20 W
R10 to 56K
PHYSICAL CONFIGURATION
HCA SERIES
W
H
d
+
35 3 L+
35 3
LM
!
!
For resistance values less than
R10 and tolerance less than +2%
please measure resistance over
centered length LM.
Pulse type resistors are
available in this series by
substituting the resistance
element and the substrate from
fibre glass to ceramic.
For further information please
refer to
In case a tailor-made pulse
resistor is required, please
refer to
and provide data
accordingly.
“Understanding pulse &
over load capability of wire
wound resistors”.
"Questionnaire of data
required"
Alloy Wire Wound
Element On
Fibre Glass/Ceramic
Substrate
Flame Proof
High Temperature
Ceramic Housing
Inorganic
Fire Retardant
Encapsulant
Mechanically Crimped
Termination Assembly
TM
PHYSICAL CONFIGURATION
WIRE WOUND RESISTORS
CERAMIC ENCASED TYPE
HCV SERIES
W2
W3
H3
d
W1
L1
H1
H2
0.5
L3
L4
ELECTRICAL AND ENVIRONMENTAL CHARACTERISTICS / DATA
TM
HCA/HCV
In order to facilitate vertical mounting of the large 7W to 20W resistors in HCA series on heavily
populated PCB's they can be supplied on request with mounting brackets as shown in HCV series.
CV-7 7 60+1.5 5+0.5 7+1 2.1+0.15 11+1 9.5+1 10+1 2.1+0.15 10+1 0.8 R10 30K 10.0
CV-10 10 67+1.5 5+0.5 7+1 2.1+0.15 11+1 9.5+1 10+1 2.1+0.15 10+1 0.8 R10 43K 13.3
CV-15 15 62.5+2 4.5+0.2 6.5+1 2.5+0.15 14+1 12.5+1.2 13+1.2 2.5+0.15 13+1 1.0 R10 43K 22.1
(25°C)
CV-20 20 78+2 4.5+0.2 6.5+1 2.5+0.15 14+1 12.5+1.2 13+1.2 2.5+0.15 13+1 1.0 R10 56K 26.4
(25°C)
HTR
TYPE
L1L3L4H1H2H3W1W2W3d+0.1
RESISTANCE
RANGE
min max
TYPICAL
WT
PER PC
(gms)
DIMENSIONS (mm)POWER
RATING
AT 70°C
Performance Requirements
Test
Resistance tolerance + 10% [K]; + 5% [J]; +3% [H]; +2% [G
+ 1% [F]
Rated ambient temperature upto 10W, full power dissipation at 70 C
[See derating curve] 15W/20W full power dissipation at 25 C
Dielectric withstanding
voltage Max DR +[2% + R05]
Insulation resistance > 1000 M [minimum]
Temperature co-efficient +100 ppm/ C [> 10R]
+80 ppm/ C [< 10R]
+450 ppm/ C [< 1R0]
Short time overload Max DR +[2% + R05]
Moisture resistance Max DR +[3% + R05]
Load life Max DR <[5% + R05]
Ambient operating -40 C to +155 C
temperature range
Flame test Specifications laid down by UL
have been met satisfactorily.
°
°
°
°
°
°°
DERATING CURVE
Ambient Temperature [°C]
40 80 120 160 200 240 275
Max 155°C
25°C
120
100
80
40
0
70°C Up to 10W
Rated dissipation [%]
15W/20W
WIRE WOUND RESISTORS
CERAMIC ENCASED TYPE
HCA/HCV
HCA/HCV series resistors are almost universally used in the far east for almost all audio, TV and Industrial
Equipment applications. This series enjoys the following distinct advantages over normal coated resistors :
1) As the resistive element is hermetically sealed in a ceramic case using a cement which enjoys flame
retardant properties even at high
overload no damage can be caused to neighbouring components.
2) Due to very high degree of insulation and low surface temperature, these resistors can be mounted with
their bodies relatively closer
to the PCB.
3) These resistors are also commonly referred to in the far east as cement resistors owing to the nature of
their construction.
4) In certain markets these resistors are also wrongly called fusible resistors.
5) The Impulse type variant in this series is widely used for pulse and surge applications.
TYPICAL APPLICATIONS
TOLERANCE
RESISTANCE VALUE
HTR TYPE
SERIES
HCA [HCV] 100R JC-7 [CV-7]
ORDERING INFORMATION
TM
Note : 1) In case Pulse type is required please suffix HTR type with I eg. C-5I.
2) 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.
3) Types C-10, C-15 and C-20 may have cases with bottom bumps as per international practice.
