USR 2-0808 /1510 /2110 /3010
Precision Foil Resistors
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Resistances from 1Ohm to 1MOhms
Power Rating to 2Watt
Resistance Tolerances to ±0.005%
TCR to ±1ppm/K
Load Stability to 0.01%
SPECIFICATIONS
Type
Resistance Range
Power rating (70°C)
Tolerances
from 1.0 Ohms
from 5.0 Ohms
from 12.0 Ohms
from 25.0 Ohms
from 100.0 Ohms
Stability
Shelf Life Stability
Temperature Coefficient
USR 2-0808
1.0 to 300 kOhms
0.6W (<100 kOhms)
0.4 (>100 kOhms)
USR 2-1510
1.0 to 300 kOhms
1.0W (<200 kOhms)
0.6 (>200 kOhms)
USR 2-2110
1.0 to 500 kOhms
1.5W (<300 kOhms)
0.8 (>300 kOhms)
USR 2-3010
1.0 to 1 MOhms
2.0W (<400 kOhms)
1.0 (>400 kOhms)
0.5% / 1%
0.05% / 0.1% / 0.25% / 0.5% / 1%
0.02% / 0.05% / 0.1% / 0.25% / 0.5% / 1%
0.01% / 0.02% / 0.05% / 0.1% / 0.25% / 0.5% / 1%
0.005% / 0.01% / 0.02% / 0.05% / 0.1% / 0.25% / 0.5% / 1%
0.01%
25ppm / ∆R after 1 year
50ppm / ∆R after 3 year
max. ±5ppm/K (-55 to 155°C)
typ. ±3ppm/K (-55 to 125°C)
upon request ±1ppm/K (0 to 60°C)
and ±1ppm/K (-55 to 125°C)
> 10GOhm
< 0.1µV/K
-55 to 155°C
NiCr-Foil
Al
2
O
3
PBTP / Epoxy
Cu tinned
2
Insolation Resistance
Thermal EMF
Operating Temperature Range
Resistor Material
Substrate
Housing
Connector Material
Terminals
Derating
120
Power (% from
nominal power)
100
80
60
40
20
0
50
70
85
100
115
130
145
155
Ambient Temperature (°C)
Ordering Information
Part Number - Resistance - Tolerance - TCR
USR 2-2110 478kOhms 0.1% 5ppm
Riedon Inc.
300 Cypress Avenue
Alhambra CA 91801
only 0808:
Grid (E) 3.81mm (0.15inches) = D
Grid (E) 5.08mm (0.2inches) = J
(626) 284-9901
(626) 284-1704
Page 116
rev. 03/2006A
RIEDON [ RIEDON POWERTRON ]
