HS Aluminium Housed Resistors
Manufactured in line with the requirements of MIL 18546 and
IEC 115, designed for direct heatsink mounting with thermal
compound to achieve maximum performance.
• High Power to volume
• Wound to maximise High Pulse Capability
• Values from R005 to 100K
• Custom designs welcome
• RoHS Compliant
Characteristics
Tolerance (Code):
Standard 5% (J) and 10% (K). Also available 1% (F), 2% (G) and 3% (H)
Typically ≥ R05 5% ≤ R047 10%
Tolerance for low Ω values:
Temperature coefficients:
Insulation resistance (Dry):
Power dissipation:
Typical values < 1K 100ppm Std. > 1K 25ppm Std. For lower TCR’s please contact Arcol
10,000 MΩ minimum
At high ambient temperature dissipation derates linearly to zero at 200°C
From R005 to 100K depending on wattage size
Ohmic values:
Low inductive (NHS):
NHS ohmic value:
Specify by adding N before HS Series code, e.g. NHS50
Divide standard HS maximum value by 4
NHS working volts:
Divide standard HS maximum working voltage by 1.414
Temp. Rise & Power Dissipation
Heat Dissipation
Surface temperature of resistor related to power dissipation.
The resistor is standard heatsink mounted using a proprietary
heatsink compound.
Heat dissipation: Whilst the use of proprietary heat sinks
with lower thermal resistances is acceptable, uprating is not
recommended. For maximum heat transfer it is recommended
that a heat sink compound be applied between the resistor
base and heat sink chassis mounting surface. It is essential that
the maximum hot spot temperature of 200°C is not exceeded,
therefore, the resistor must be mounted on a heat sink of
correct thermal resistance for the power being dissipated.
200
HS300
HS250
HS150
HS50
HS200
HS25
HS15
100
HS100
HS75
HS10
Ordering Procedure
5
Standard Resistor. To specify standard: Series, Watts, Ohmic
Value, Tolerance Code, e.g.: HS25 2R2 J
0
20
50
75 100
150
200
250
300
POWER DISSIPATION (WATTS)
Non Inductive Resistor. To specify add N, e.g.: NHS100 10R J
ARCOL UK Limited,
The information contained herein does not form part of a
contract and is subject to change without notice. ARCOL
operate a policy of continual product development, therefore,
specifications may change.
Threemilestone Ind. Estate,
Truro, Cornwall, TR4 9LG, UK.
T +44 (0) 1872 277431
F +44 (0) 1872 222002
It is the responsibility of the customer to ensure that the
component selected from our range is suitable for the intended
application. If in doubt please ask ARCOL.
E sales arcolresistors.com
@
For more information and ordering, please consult
www.arcolresistors.com
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