ULR Datasheet, PDF (1/3 Pages) Welwyn Components Limited – Metal Strip Current Sense Resistors Surface Mount

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
Power rating at 80°C
Resistance range ¹
watts
ohms
ULR1
1.0
R0005 to R007
ULR2
2.0
R0005 to R01
ULR25
2.5
R0035 to R006
Isolation voltage
volts
200V
200V
200V
TCR
ppm/°C
50, 75, 100, 150
See table below
50
50
Resistance Tolerance
%
1(F), 5(J)
Protective coating ²
Black
Green/ Black
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
ULR3
3.0
R0005 to
R003
200V
50, 75, 100
See table
below
Green
Standard values available (non-standard values may be available to order - consult factory)
Value
R0005
R00075
R001
R0015
R002
R0025
R003
R0035
R004
R0045
R005
R0055
R006
R007
R008
R009
R01
ULR1
Colour
TCR
Black
50
Black
50
Black
50
Black
50
Black
50
Black
150
Black
150
Black
150
Black
100
Black
100
Black
100
Black
100
Black
75
Black
75
ULR2
Colour
TCR
Black
50
Black
50
Black
50
Black
50
Black
50
Green
50
Green
50
Green
50
Green
50
ULR25
Colour
TCR
Green
50
Green
50
Green
50
Green
50
Green
50
Green
50
ULR3
Colour
TCR
Green
100
Green
100
Green
50
Green
50
Green
50
Green
75
Green
75
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
A subsidiary of TT electronics plc
Welwyn Electronics Park, Bedlington, Northumberland, NE22 7AA, England. Tel: [phone] Fax: [phone] Web: www.welwyn-tt.com