RIEDON USR2-0710

USR UNR 2-0710
Precision Foil Resistors
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Resistances from 1Ohm to 150kOhms
Power Rating to 0.6Watt
Resistance Tolerances to ±0.005%
TCR to ±1ppm/K
Load Stability to 0.01%
SPECIFICATIONS
Type
USR 2-0710
Resistance Range
1.0 Ohms to 4.99 kOhms
5.0 kOhms to 150 kOhms
1.0 Ohms to 5.0 kOhms
0.4W
(0.6W upon request)
0.6W
0.4W
Power rating (70°C)
Tolerances
from 1.0 Ohms
from 5.0 Ohms
from 12.0 Ohms
from 25.0 Ohms
from 50.0 Ohms
UNR 2-0710
0.1% / 0.25% / 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%
Stability
0.01%
Shelf Life Stability
25ppm / ∆R after 1 year
50ppm / ∆R after 3 year
Temperature Coefficient
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)
Insolation Resistance
> 10GOhm
Thermal EMF
< 0.1µV/K
Operating Temperature Range
-55 to 155°C
Resistor Material
NiCr-Foil
Substrate
Al2O3
Housing
AlN
PBTP / Epoxy
Connector Material
Cu tinned
Terminals
2
Notes
Specially designed for applications with fast changing
electrical load
Ordering Information
Part Number - Resistance - Contact - Tolerance - TCR
UNR 2-0710 3.7Ohms J 0.5% 1ppm
Riedon Inc.
300 Cypress Avenue
Grid (E) 3.81mm (0.15inches) = D Grid (E) 5.08mm (0.2inches) = J
Alhambra CA 91801
(626) 284-9901
(626) 284-1704
www.riedon.com
Page 120
rev. 03/2006A
USR UNR 2-0710
Precision Foil Resistors
SPECIFICATIONS (continued)
Temperature Coefficient
800
∆R/R (ppm)
600
+5ppm/K
-5ppm/K
400
200
Nominal Spread
±2.3ppm/K
0
-200
Nominal ∆R/R
-400
Nominal Spread
±2.3ppm/K
-600
-800
-50
0
-25
25
50
75
100
125
Temperature (°C)
Derating
Power (% from
nominal power)
120
100
80
60
40
20
0
50
70
85
100
115
130
145
155
Ambient Temperature (°C)
Dimensions
Riedon Inc.
300 Cypress Avenue
Dimension
mm
tol.
(±mm)
inches
tol.
(±inches)
A
30.00
2.0
1.18
0.079
B
7.00
0.1
0.28
0.004
C
9.50
0.2
0.37
0.008
D
2.00
0.1
0.08
0.004
E1
3.81
0.1
0.15
0.004
E2
5.08
0.1
0.20
0.004
F
3.00
0.1
0.12
0.004
G
Ø0.60
0.1
Ø0.02
0.004
Alhambra CA 91801
(626) 284-9901
(626) 284-1704
www.riedon.com
Page 121
rev. 03/2006A