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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.

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.

ARCOL UK Limited,

Threemilestone Ind. Estate,

Truro, Cornwall, TR4 9LG, UK.

T +44 (0) 1872 277431

F +44 (0) 1872 222002

E sales@arcolresistors.com

12/14.08

Manufactured in line with the requirements of MIL 18546 and

IEC 115, designed for direct heatsink mounting with thermal

compound to achieve maximum performance.

Characteristics

Tolerance (Code):

Tolerance for low Ω values:

Temperature coefficients:

Insulation resistance (Dry):

Power dissipation:

Ohmic values:

Low inductive (NHS):

NHS ohmic value:

NHS working volts:

Standard ±5% (J) and ±10% (K). Also available ±1% (F), ±2% (G) and ±3% (H)

Typically ≥ R05 ±5% ≤ R047 ±10%

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

Specify by adding N before HS Series code, e.g. NHS50

Divide standard HS maximum value by 4

Divide standard HS maximum working voltage by 1.414

Ordering Procedure

Standard Resistor. To specify standard: Series, Watts, Ohmic

Value, Tolerance Code, e.g.: HS25 2R2 J

Non Inductive Resistor. To specify add N, e.g.: NHS100 10R J

Heat Dissipation

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.

Temp. Rise & Power Dissipation

Surface temperature of resistor related to power dissipation.

The resistor is standard heatsink mounted using a proprietary

heatsink compound.

HS300

HS250

HS200

HS150

HS50

HS75

HS25

HS15

HS10

HS100

0

20

50

75 100

150

200

250

300

POWER DISSIPATION (WATTS)

200

100

5

www.arcolresistors.com

For more information and ordering, please consult