ULW3-22RJA1 Datasheet, PDF (1/5 Pages) List of Unclassifed Manufacturers – UL Recognised Wirewound Resistors

Resistors
UL Recognised
Wirewound Resistors
Make Possible
ULW Series
UL1412 recognised fusible resistor *
Failsafe mains fusing at 120 / 240Vrms
Inrush and surge withstanding
UL94-V0 flameproof coating
SMD leadform option available
RoHS compliant
* UL file number E234469.
All Pb-free parts comply with EU Directive 2011/65/EU (RoHS2)
Electrical Data
Power rating at 25°C
5 second overload rating at 25ºC
Inrush / surge performance
Resistance range
TCR
Isolation voltage
Resistance tolerance
UL recognised standard values
Thermal impedance
Ambient temperature range
watts
watts
ohms
ppm/°C
volts
%
ohms
°C/watt
°C
ULW2
ULW3
ULW4
ULW5
2
3
4
5
10
15
20
25
See Pulse Performance graphs
4R7 to 100
4R7 to 100
4R7 to 100
4R7-100
±200
250
350
500
5
Any value in range 4R7 to 100R is recognised. E24 preferred
110
82
62
54
-55 to +155
Note - no limiting element voltage applies; maximum continuous voltage is √(P.R)
Physical Data
Dimensions (mm) and weight (g)
Type
L Max D Max
f min
d nom
PCB
mount
centres
Min
bend
radius
Wt.
Nom
ULW2 9.0
3.8 19.8
12.7
0.5
d
ULW3 14.5 5.8 24.6
0.8
20.3
1.2
1.1
D
L
f
ULW4 13
5.6 22.8
18.9
1.0
ULW5 16.5 7.2 23.6
22.9
1.8
Construction
A high purity ceramic rod is assembled with interference fit end caps to which are welded the terminations. The surge withstanding resistive element is
wound on the rod and welded to the caps. Flameproof fusible cement coating is applied prior to marking with indelible ink. The components are then
leadformed if required and packed.
Marking
ULW2 & ULW3 resistors are marked with five colour bands. The first four indicate value and tolerance in conformance with IEC62. The fifth yellow band
denotes defined fusibility. ULW4 and ULW5 resistors are legend marked with type, value and tolerance.
General Note
TT Electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
© TT Electronics plc
www.ttelectronicsresistors.com
07.14