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ULR Datasheet(PDF) 1 Page - Welwyn Components Limited

Part No. ULR
Description  Metal Strip Current Sense Resistors Surface Mount
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Manufacturer  WELWYN [Welwyn Components Limited]
Direct Link  http://www.welwyn-tt.com/
Logo WELWYN - Welwyn Components Limited

ULR Datasheet(HTML) 1 Page - Welwyn Components Limited

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Metal Strip Current Sense Resistors
Surface Mount
ULR Series
• 1 watt to 3 watts, all 2512 size
• Resistance R0005 (0.5mΩ) to R01 (10mΩ)
Low TCR, Low inductance
Designed for current sensing in power electronic systems
RoHS compliant
Electrical Data
ULR1
ULR2
ULR25
ULR3
Power rating at 80
°C
watts
1.0
2.0
2.5
3.0
Resistance range
1
ohms
R0005 to R007
R0005 to R01
R0035 to R006
R0005 to
R003
Isolation voltage
volts
200V
200V
200V
200V
TCR
ppm/°C
50, 75, 100, 150
See table below
50
50
50, 75, 100
See table
below
Resistance Tolerance
%
1(F), 5(J)
Protective coating
2
Black
Green/ Black
Green
Green
Standard Values
See table below for available values
Ambient temperature range
°C
-55 to +170
Note 1: For values above 0R01 refer to our LR / LRF Series
Note 2: Colour of coating relates to solder process suitability, see Construction
Standard values available (non-standard values may be available to order - consult factory)
ULR1
ULR2
ULR25
ULR3
Value
Colour
TCR
Colour
TCR
Colour
TCR
Colour
TCR
R0005
Black
50
Black
50
Green
100
R00075
Black
50
Black
50
Green
100
R001
Black
50
Black
50
Green
50
R0015
Black
50
Black
50
Green
50
R002
Black
50
Black
50
Green
50
R0025
Black
150
Green
75
R003
Black
150
Green
75
R0035
Black
150
Green
50
R004
Black
100
Green
50
R0045
Black
100
Green
50
R005
Black
100
Green
50
R0055
Black
100
Green
50
R006
Black
75
Green
50
R007
Black
75
Green
50
R008
Green
50
R009
Green
50
R01
Green
50
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability.
All information is subject to Welwyn’s own test data and is considered accurate at time of print.
©Welwyn Components Limited
Welwyn Electronics Park, Bedlington, Northumberland, NE22 7AA, England. Tel: 01670 822181 Fax: 01670 829465 Web: www.welwyn-tt.com
A subsidiary of TT electronics plc


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