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PDF UT-xx Data sheet ( Hoja de datos )

Número de pieza UT-xx
Descripción Silicone Coated Power Resistors
Fabricantes Willow Technologies 
Logotipo Willow Technologies Logotipo



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UT-xx Hoja de datos, Descripción, Manual
UT Series
Silicone Coated Power Resistors
www.DataSheet4U.com
• Resistances from 0.005 to 260kOhms
• Power Rating 0.1 to 13Watts
• Resistance Tolerances to ± 0.01%
• Low TCR: ± 20ppm/K Standard
• MIL-R-26 / MIL-R-39007 Power Ratings
• Temperature Range: -55°C to +350°C ( “V” Rating )
• Non-Inductive Windings Available
SPECIFICATIONS
Specification
Tolerances
Temperature Coefficient
Temperature Range
Dielectric Strength
Constuction
Environmental Performance
(MIL-STD 202)
Dielectric
Load Life
Storage
Moisture Resistance
Thermal Shock
5X Overload ( 5s )
Shock
Vibration
Value
±0.01% to ±10% ( 1% Standard )
>10W : ±20ppm/K
1W to10W : ±50ppm/K
<1W : Call Factory
-55°C to +250°C : Characteristic U
-55°C to +350°C : Characteristic V
500 VAC : UT-1 / UT-1/2A / UT-1/2 / UT-1A
1000 VAC : All Others
Centerless ground ceramic core
Tinned copper or copperweld leads
High temperature / trivalent / inorganic Silicone coating
All welded terminations
DR
Characteristic U
Characteristic V
±0.2% + 0.05W
±0.2% + 0.05W
±1% + 0.05W
±3% + 0.05W
±0.2% + 0.05W
±2% + 0.05W
±0.2% + 0.05W
±2% + 0.05W
±0.2% + 0.05W
±2% + 0.05W
±0.2% + 0.05W
±2% + 0.05W
±0.1% + 0.05W
±0.2% + 0.05W
±0.1% + 0.05W
±0.2% + 0.05W
Power Derating Curve
120
100
80
60
40
CHAR U CHAR V
20
Ordering Information
0
0 50 100 150 200 250 300 350
Ambient Temperature (°C)
For Non-Inductive Windings / insert the letter “N” ( i.e. UTN-5 )
Part Number - Resistance - Tolerance - TCR ( If not standard )
Example: UT-5 25kOhms 0.1%
400
Willow Technologies Ltd. Shawlands Court, Newchapel Road, Lingfield, Surrey, RH7 6BL, United K ingdom.
+ 44 (0) 1342 835234 + 44 (0) 1342 834306 info@willow.co.uk http://www.willow.co.uk
rev. 03/2006A

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