HEA
SERIES
WIRE WOUND RESISTORS
CERAMIC ENCASED TYPE
EUROPEAN STYLE
Power Ceramic Encased Wire Wounds
Alloy Wire Wound Element
On Heat Conducting
Ceramic / Fibre Glass Substrate
Fire Proof
Ceramic Housing
Quartz Silica
Powder
Mechanically Crimped
Termination Assembly
2.5 W to 17 W
R 025 to 70 K
HTR
TYPE
POWER
RATING
at 70°C L
+1.5
H
+1
DIMENSIONS (mm)
d
+0.05
RESISTANCE
RANGE
min max
W
+1
C-2A 2.5W 15.0 6.0 6.0 0.8 35 R025 6K8 1.6
C-4 4W 20.0 6.0 6.0 0.8 40 R04 11K 2.0
C-5B 5W 25.0 6.0 6.0 0.8 45 R05 16K 2.3
C-6 6W 30.0 6.0 6.0 0.8 50 R10 22K 2.8
C-7A 7W 38.0 6.0 6.0 0.8 60 R10 33K 4.9
C-7B 7W 25.0 9.0 9.0 0.8 45 R05 16K 4.8
C-9/ 9W/
C-10A 10W 38.0 9.0 9.0 0.8 60 R10 33K 7.3
C-11 11W 50.0 9.0 9.0 0.8 70 R10 47K 9.5
C-17 17W 75.0 9.0 9.0 0.8 95 R10 70K 13.8
TYPICAL
WT.
PER PC
(gms)
LM
+1
w
35+3 L35+3
6mm, reduced solderability in this area
For resistance values less than R10 and tolerance less than +2%
please measure resistance over centered length LM.
H
PHYSICAL CONFIGURATION
HEA SERIES
dLM
TM
HEA
ORDERING INFORMATION
TOLERANCE
RESISTANCE VALUE
HTR TYPE
SERIES
HEA 100R JC-4
ELECTRICAL AND ENVIRONMENTAL CHARACTERISTICS / DATA
WIRE WOUND RESISTORS
CERAMIC ENCASED TYPE
Note :
TAPING : Types C-2A, C-4 and C-5B can be supplied in taped form. Please refer
and
In case pulse type is required, please suffix HTR Type with I eg. C-4I.
tape/ammo pack specifications
tape/reel specifications.
TM
Performance Requirements
Test
Resistance tolerance + 10% [K]; + 5% [J]; +3% [H],
+ 2% [G]; +1% [F]
Rated ambient temperature at 70 C full power dissipation
[See derating curve]
Voltage rating V= PxR
Dielectric withstanding voltage Max. DR +[2% + R05]
Insulation resistance > 1000 M [minimum]
Temperature co-efficient +40 to 0 ppm/ C
[medium and high values]
+400 to +500 ppm/ C
[low and very low values]
Short time overload Max.D R +[2% + R05]
Moisture resistance Max.D R +[3% + R05]
Load life Max.D R +[3% + R05] Average
Ambient operating
temperature range -40 C to +155 C
Flame test UL specifications have been
met satisfactorily.
°
+15 °
°
°°
DERATING CURVE
Ambient temperature [°C]
40 80 120 160 200 240 275
70°C
120
100
80
40
0
Rated dissipation [%]
TYPICAL APPLICATIONS
"Understanding pulse & over load capability of wire wound
resistors".
"Questionnaire of data required"
HEA series enjoy a wide market in audio and TV field.
Apart from these applications and as they are also available in close tolerance, they have increasingly found favour with OEM's in the
industrial field, especially where the following properties are required -
(a) High degree of insulation (b) Low surface temperature.
Depending on resistance value and application the resistors core may be fibreglass or ceramic. These resistors are also available for
use in pulse applications, for further information please refer to
and provide data accordingly.
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.
In case a tailor-made pulse resistor is required, please refer to
