MRA
Precision Metal Film Resistors
Europe’s No 1 selling axial thin film high precision resistor. Stable films are
sputtered on to high purity alumina rods, then covered in tough epoxy to
protect from any environmental extremes
•
Power dissipation up to 2W
•
Value range from R1 to 10M
•
Precision tolerance down to ±0.05%
•
Low TCR ± 5ppm/ºC
•
RoHS Compliant
Characteristics
Tolerance (Code):
Operating temperature:
Temperature coefficient:
Overload:
Endurance:
Damp heat with load:
Solderability:
Temperature coefficient:
Pulse overload:
Terminal strength:
Shelf life:
± 0.05%, ± 0.1% (B), ± 0.25 (C), ± 0.5% (D), ± 1% (F)
-55°C to +155°C
± 5ppm/°C , ± 10ppm/°C , ± 15ppm/°C, ± 25ppm/°C, ± 50ppm/°C, ± 100ppm/°C
± 0.25% rated continuous working voltage =√(P*R)*2.5 for 5 seconds
±0.2%, 70±2˚C, rated continuous working voltage for 1000 hours with 1.5 hrs ON and 0.5 hrs OFF
±0.3%, 40±2˚C, 90 - 95% RH, rated continuous working voltage for 1000 hours with 1.5 hrs ON and 0.5 hrs
OFF
90% min coverage, 245±5˚C for 3 seconds
by type, resistance value 25˚C and 100˚C
±0.75%, 4 times rated continuous working voltage =√(P*R) for 10,000 cycles with 1 second ON and 25
seconds OFF
Tensile ≥2.5kg, direct load for 10 seconds in the direction of the terminal leads
∆R ±0.1%, 12 months at 25˚C±3˚C, 80% RH maximum
Dimensions (mm)
Type
MRA0104
MRA0207
MRA0309
MRA0412
MRA0516
L
3.3 +0.7/-0.2
6.3 ±0.5
9.0 ±0.5
11.5 ±1.0
15.5 ±1.0
D
1.8 ±0.3
2.3 ±0.3
3.2 ±0.5
4.5 ±0.5
5.0 ±0.5
H
29 ±2.0
28 ±2.0
26 ±2.0
35 ±2.0
32 ±2.0
d ±0.03
0.45
0.55
0.65
0.78
0.78
L
H
d
D
Ordering Procedure
Standard Resistor: Series, Resistance Value, Tolerance, TCR,
Packaging (TA: Taped Ammo, TR: Taped Reel)
e.g.: MRA0104 10R B 15PPM TA
Derating Curve
100
Power Rated %
80
60
40
20
0
0
20
40
60
80
100
120
140
160
Ambient Temperature (°C)
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
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.
Page 1 of 2
6/14.02
www.arcolresistors.com
MRA
Precision Metal Film Resistors
Electrical Specifications
Type Wattage
Max. operating
voltage
Resistance Range / Tolerance / TCR (ppm/ºC)
±0.05%
TCR
±0.1%
TCR
±0.25%
10R - 1M
1/8W
200V
10R - 1M
±15ppm
±25ppm
±50 ppm
TCR
±15ppm
±25ppm
±50 ppm
±100ppm
±5ppm
±10ppm
±15ppm
±25ppm
±50 ppm
±0.5%
10R - 4M99
10R - 10M
1R - 10M
TCR
±15ppm
±25ppm
±50 ppm
±100ppm
±5ppm
±10ppm
±15ppm
±25ppm
±50 ppm
±100ppm
±1%
10R - 4M99
10R - 10M
R1 - 10M
TCR
±15ppm
±25ppm
±50 ppm
±100ppm
MRA0104
1R - 1M
1/4W
250V
10R - 1M
±5ppm
±10ppm
±15ppm
±25ppm
10R - 1M
±5ppm
±10ppm
±15ppm
±25ppm
±50ppm
MRA0207
10R - 1M
10R - 1M
10R - 1M
±10ppm
1R - 1M
±100ppm
10R - 10M
1R - 10M
10R - 10M
R1 - 10M
±15ppm
±25ppm
±50 ppm
±100ppm
10R - 1M
±5ppm
±10ppm
±15ppm
±25ppm
±5ppm
±10ppm
±15ppm
±25ppm
±50ppm
1R - 1M
MRA0309
±5ppm
±10ppm
±15ppm
±25ppm
±50 ppm
10R - 1M
±5ppm
±10ppm
10R - 1M
±10ppm
1/2W
350V
10R - 1M
10R - 1M
±100ppm
10R - 10M
±15ppm
±25ppm
±50 ppm
±100ppm
±15ppm
±25ppm
±50 ppm
±100ppm
±15ppm
±25ppm
±50 ppm
±100ppm
10R - 10M
±15ppm
±25ppm
±50 ppm
±100ppm
±15ppm
±25ppm
±50 ppm
±100ppm
±15ppm
±25ppm
±50 ppm
±100ppm
1R - 10M
10R - 1M
±15ppm
±25ppm
±50ppm
±100ppm
±15ppm
±25ppm
±50ppm
±100ppm
10R - 4M99
R1 - 10M
10R - 4M99
MRA0412
1W
450V
10R - 1M
±15ppm
±25ppm
±50ppm
1R - 1M
10R - 10M
1R - 10M
10R - 10M
R1 - 10M
10R - 4M99
10R - 10M
R1 - 10M
MRA0516
2W
500V
10R - 1M
±15ppm
±25ppm
±50ppm
10R - 1M
10R - 4M99
10R - 10M
1R - 10M
1R - 1M
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
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.
Page 2 of 2
6/14.02
www.arcolresistors.com
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