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PDF UNS4-T220 Data sheet ( Hoja de datos )

Número de pieza UNS4-T220
Descripción Highest Stability Near Temperature Independent
Fabricantes Willow Technologies　
Logotipo Willow Technologies Logotipo



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No Preview Available ! UNS4-T220 Hoja de datos, Descripción, Manual

USR UNR 4-T220 4-T220B 4-T221
USS UNS 4-T220
SPECIFICATIONS
• Highest Stability
• Near Temperature
Independent
• Lowest Tolerances
• Low Capacitance and
Inductance
• High Power
• Available also 2-pin version
ELEKTRICAL
Resistance range
USR 4-T220
: 0R2...80R
UNR 4-T220
note1)
0R2...80R
Nominal power
: 1.5 W (70°C) without heatsink
10 W*
15 W*
* with heatsink
Thermal Resistance Rthj-c :
10.8 K/W
6.8 K/W
Tolerances
:
from 0R5
: 0.1%, 0.25%, 0.5%, 1%
from 10R
: 0.05%, 0.1%, 0.25%, 0.5%, 1%
from 50R
: 0.01%, 0.02%, 0.05%, 0.1%, 0.25%, 0.5%, 1%
Stability
: 0.01%
Temperature coefficient :
max. ±5 ppm/K (-55...155)°C
typ. ±3 ppm/K (-55...125)°C
upon request ±1 ppm/K (0...60)°C
Voltage Proof
: 1 kVDC
www.DataSheet4U.com
Thermal EMF
: < 1 µV/K
ENVIRONMENTAL
Operating Temperature Range :
-55°C...155°C
MECHANICAL Resistor Material
: NiCr-Foil
Substrate
Housing
: Al2O3
AlN
: Epoxy + heatsink Cu nickel plated
Connector Material : Cu, tinned, 4-pin
Max. torque backplate :
1.0 Nm
note1): Specially designed for applications with fast changing electrical load.
TEMPERATURE COEFFICIENT
600
400-5 ppm/K
200
0
-20+02,2 ppm/K
-400
-600
-50
-25
+5 ppm/K
No minal-Spread
-1,8 ppm/K +/-2,3 ppm/K
No minal-dR/R
0 25 50 75 100 125
Tem perature (°C)
No minal-Spread
+/-2,3 ppm/K
Willow Technologies Ltd. Shawlands Court, Newchapel Road, Lingfield, Surrey, RH7 6BL, UK
Tel. + 44 (0) 1342 835234, Fax. + 44 (0) 1342 834306, e-mail [email protected] web www.willow.co.uk

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