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ULW Series
 
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ULW Series

2W, 3W and 5W, 5% Tolerance, Axial Leaded

TT Electronics/Welwyn

UL Recognized Wirewound Resistors

Datasheets:
Product Training Modules:
Product Description

ULW series wirewound resistors overcome the problems associated with conventional flameproof resistors caused by the ceramic rod at the resistor's core acting as a heat sink for the wire element. This can delay fusing, resulting in high enough temperatures to fragment the coating and ionize the air near to where fusing occurs. If ionization occurs close to the cap edge and at a voltage peak in the mains cycle, it can initiate a momentary flashover outside the component body, releasing far more energy than is required to fuse the wire element. Although the opening of the circuit is safe for most applications, it is far from silent.

Features
  • cUL, UL approved
  • Failsafe mains fusing at 120/240Vrms
  • Inrush and surge withstanding
  • UL94-V0 flameproof coating
Specifications
  • Composition:Wirewound
  • Features:Flame Retardant Coating, Fusible, Pulse Withstanding, Safety
  • Number of Terminations:2
  • Operating Temperature:-55°C ~ 155°C
  • Package / Case:Axial
  • Power (Watts):2W ~ 5W
  • Resistance (Ohms):4.7 ~ 100
  • Supplier Device Package:Axial
  • Temperature Coefficient:±200ppm/°C
  • Tolerance:±5%
Parts

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ULW2-100RJA25ULW2-100RJA25RES 100 OHM 2W 5% AXIAL Tape & Box (TB)100±5%2WAxialRoHS
ULW2-33RJA25ULW2-33RJA25RES 33 OHM 2W 5% AXIAL Tape & Box (TB)33±5%2WAxialRoHS
ULW2-47RJA25ULW2-47RJA25RES 47 OHM 2W 5% AXIAL Tape & Box (TB)47±5%2WAxialRoHS
ULW2-22RJA25ULW2-22RJA25RES 22 OHM 2W 5% AXIAL Tape & Box (TB)22±5%2WAxialRoHS
ULW3-10RJA1ULW3-10RJA1RES 10 OHM 3W 5% AXIAL Tape & Box (TB)10±5%3WAxialRoHS
ULW3-33RJA1ULW3-33RJA1RES 33 OHM 3W 5% AXIAL Tape & Box (TB)33±5%3WAxialRoHS
ULW3-68RJA1ULW3-68RJA1RES 68 OHM 3W 5% AXIAL Tape & Box (TB)68±5%3WAxialRoHS
ULW3-100RJA1ULW3-100RJA1RES 100 OHM 3W 5% AXIAL Tape & Box (TB)100±5%3WAxialRoHS
ULW3-27RJA1ULW3-27RJA1RES 27 OHM 3W 5% AXIAL Tape & Box (TB)27±5%3WAxialRoHS
ULW2-68RJA25ULW2-68RJA25RES 68 OHM 2W 5% AXIAL Tape & Box (TB)68±5%2WAxialRoHS
ULW5-100RJT075ULW5-100RJT075RES 100 OHM 5W 5% AXIAL Tape & Reel (TR)100±5%5WAxialRoHS
ULW5-22RJT075ULW5-22RJT075RES 22 OHM 5W 5% AXIAL Tape & Reel (TR)22±5%5WAxialRoHS
ULW5-4R7JT075ULW5-4R7JT075RES 4.7 OHM 5W 5% AXIAL Tape & Reel (TR)4.7±5%5WAxialRoHS
ULW5-10RJT075ULW5-10RJT075RES 10 OHM 5W 5% AXIAL Tape & Reel (TR)10±5%5WAxialRoHS
ULW5-68RJT075ULW5-68RJT075RES 68 OHM 5W 5% AXIAL Tape & Reel (TR)68±5%5WAxialRoHS

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