Datasheet

Page 2 of 3
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 [phone]
F [phone]
E sales
@
arcolresistors.com
www.arcolresistors.com
2/11.49
RCC Fixed Carbon Composition
Resistors
Electrical Specifications
Description Requirements Test Methods
Voltage proof No breakdown or flashover
RCC025 100Va.c, 60s
RCC050 500Va.c, 60s
Variation of resistance with
temperature
See ratings table
Measuring temperature: +20˚C/-
55˚C/+20˚C/+125˚C/+20˚C
Overload
∆R ≤ ± (2% +0.1 ohm)
No visible damage, legible marking
The applied voltage shall be 2.5 times of the rated
voltage or twice of the limiting element voltage,
whichever is the less severe, 5s
Robustness of
terminations
Tensile ∆R ≤ ± (2% +0.1 ohm) no visible damage 10N for 5-10s
Bending ∆R ≤ ± (2% +0.1 ohm) no visible damage 5N twice
Torsion ∆R ≤ ± (2% +0.1 ohm) no visible damage 180˚C, 2 rotation
Solderability In accordance with clause 4.17.4.5 235˚C, 5s
Resistance to soldering heat
∆R ≤ ± (3% +0.1 ohm)
No visible damage, legible marking
After immersion into the flux, the immersion into
solder shall be carried out 4mm from the body at
350˚C for 3.5s
Rapid change of temperature ∆R ≤ ± (2% +0.1 ohm) no visible damage 5 cycles between -55˚C and +125˚C
Climatic sequence
∆R ≤ ± (10% +0.5 ohm) Insulation resistance:
R≥100M ohm, no visible damage
Dry/damp heat (12+12h cycle), first cycle
Cold/damp heat (12+12h cycle), remaining cycle
D.C. load
Damp test, steady state
∆R ≤ ± (10% +0.5 ohm) Insulation resistance:
R≥100M ohm, no visible damage, legible
marking
40˚C, 95% R.H, 56 days, test a), b), c) of clause
4.24.2.1
Endurance at 70˚C
∆R ≤ ± (10% +0.5 ohm) No visible damage
Insulation resistance R≥ 1G ohm
Rated voltage 1.5h “ON”, 0.5h “OFF” 70˚C, 1000h
Endurance at the upper category
temperature
∆R ≤ ± (10% +0.5 ohm) No visible damage
Insulation resistance R≥ 1G ohm
125˚C, no load, 1000h
Derating Curve
The derated values of dissipation for temperatures in excess of
70˚C shall be indicated by the curve above
0
0 70 125
Temperature °C
100
Rated dissipation %
Climatic Category
55/125/56
Lower category temperature -55˚C
Upper category temperature +125˚C
Duration of the damp heat, steady state test 56 days