UR73
current sensing chip resistor
resistors
EU
features
•
•
•
•
•
Very low resistance, high precision reliability
Utilization of thick film
Low T.C.R. achieved (±100 ppm/°C)
Marking: Indigo body color with white marking
Products with lead-free terminations meet EU RoHS
requirements. EU RoHS regulation is not intended for
Pb-glass contained in electrode, resistor element and glass.
dimensions and construction
UR73
a
L
a
Size
Code
D1E
Resistance
Range (Ω)
24m ~ 100m
L
Dimensions
inches
(mm)
W
h
a
b
.039
+.004
.020
+.004
-.002
-.002
+0.1
(1.0
-0.05
)
W
.016±.002 .010±.004 .012±.004
+0.1
(0.5
-0.05
) (0.4±0.05) (0.25±0.1) (0.3±0.1)
h
b
Protective
Coating
Resistive Inner
Film
Electrode
Ni
Plating
D1J
.022±.004
+.005
10m ~ 27m
.063±.008 .031
-.004
.02±.004 .014±.004
(0.55±0.1)
30m ~ 100m
(1.6±0.2) (0.8
+0.15
) (0.5±0.1) (0.35±0.1)
.014±.004
-0.1
(0.35±0.1)
10m ~ 16m
.079±.008 .049±.008 .022±.004 .016±.008
18m ~ 30m
(2.0±0.2) (1.25±0.2) (0.55±0.1) (0.4±0.2)
.024±.008
(0.6±0.2)
.02±.008
(0.5±0.2)
D2A
Ceramic
Substrate
UR73D
a
L
2A
a
D2B
33m ~ 100m
.079±.008 .049±.008 .02±.004 .016±.008
.012
+.008
-.004
(0.3
+0.2
)
-0.1
(2.0±0.2) (1.25±0.2) (0.55±0.1) (0.4±0.2)
W
Solder
Plating
Ni
Plating
b
Resistive
Film
Ceramic Protective
Substrate Coating
Inner
Electrode
.039±.008
10m ~ 16m
.126±.008 .063±.008 .024±.004 .020±.008
(1.0±0.2)
18m ~ 27m
(3.2±0.2) (1.6±0.2) (0.6±0.1) (0.5±0.2)
.031±.008
(0.8±0.2)
+.008
.126±.008 .063±.008 .024±.004 .020±.012 .016
-.004
30m ~ 100m
(3.2±0.2) (1.6±0.2) (0.6±0.1) (0.5±0.3) (0.4
+0.2
)
-0.1
2B
h
D2H
.063±.012
10m ~ 30m
.197±.008 .098±.008 .026±.004 .026±.012
(1.6±0.3)
33m ~ 100m
(5.0±0.2) (2.5±0.2) (0.65±0.1) (0.65±0.3)
.026±.012
(0.65±0.3)
.079±.012
10m ~ 30m
.248±.008 .122±.008 .024±.004 .031±.012
(2.0±0.3)
33m ~ 100m
(6.3±0.2) (3.1±0.2) (0.6±0.1) (0.8±0.3)
.031±.012
(0.8±0.3)
D3A
ordering information
New Part #
UR73
Type
UR73
UR73D
2A
Power
Rating
1E: 0.125W
1J: 0.2W
2A: 0.25W
2B: 0.5W
2H: 0.75W
3A: 1W
T
Termination
Material
T: Sn
TD
Packaging
TP: 2mm pitch
punch paper
(1E)
TD: 7" punched
paper tape
(1J, 2A, 2B)
TE: 7" embossed plastic
(2H, 3A)
R100
Nominal
Resistance
All values less than
0.1Ω (100mΩ) are
expressed in mΩ with
“L” as decimal.
Ex: 20mΩ = 20L0
F
Tolerance
F: ±1%
For further information on packaging, please refer to Appendix A.
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
1/10/11
38
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
current sensing chip resistor
applications and ratings
Part
Designation
Power*
Rating
T.C.R.
(ppm/°C)
Max.
±100
±500
±100
UR73D1J
UR73D2A
UR732A
UR73D2B
UR732B
UR73D2H
UR73D3A
1/5W (.2W)
1/4W (.25W)
1/4W (.25W)
1/2W (.5W)
1/2W (.5W)
3/4W (.75W)
1W (1W)
±200
±300
±250
±100
±250
±200
±100
±200
±250
±100
±250
±100
Resistance Range
F (±1%) E-24,
25mΩ, 50mΩ
30mΩ - 100mΩ
24mΩ - 27mΩ
47mΩ - 100mΩ
30mΩ - 43mΩ
10mΩ - 27mΩ
10mΩ - 30mΩ
47mΩ - 100mΩ
33mΩ - 43mΩ
10mΩ - 27mΩ
47mΩ - 100mΩ
30mΩ - 43mΩ
10mΩ - 30mΩ
33mΩ - 100mΩ
10mΩ - 30mΩ
33mΩ - 100mΩ
Absolute
Maximum
Working
Voltage
Maximum
Overload
Voltage
(5 sec. max.)
Operating
Temperature
Range
UR73D1E
1/8W (.125W)
√
P•R
√
P•R x 2.5
-55°C
to
+125°C
* Power rating is guaranteed by the Temperature Rise data shown below
environmental applications
Derating Curve
100
80
% Rated Power
Surface Temperature Rise
UR73 2A, 2B 33mΩ
100
UR73D 1J, 2A, 2B, 2H, 3A 10mΩ
UR73D 1E 24mΩ
100
3A (1)
2H (1)
Temperature Rise
(°C)
Temperature Rise
(°C)
60
40
20
0
-60 -40
-55
75
2B (1)
2B (2)
2A (1)
2A (2)
75
3A (2)
2H (2)
2B (1)
2B (2)
2A (1)
1J (1)
1E (1)
2A (2)
1J (2)
1E (2)
50
50
25
25
-20
0
80
70
Ambient Temperature
(°C)
20
40
60
100 120
140
125
0
0
25
50
75
100
0
0
25
50
75
100
% Rated Power
1
2
% Power Rating
1
2
For resistors operated at an ambient temperature of 70°C
or above, a power rating shall be derated in accordance
with the above derating curve.
Regarding the temperature rise, the value of the temperature varies per conditions and
board for use since the temperature is measured under our measuring conditions.
Performance Characteristics
Parameter
Resistance
T.C.R.
Overload (Short time)
Resistance to Solder Heat
Rapid Change of Temperature
Moisture Resistance
Endurance at 70°C
High Temperature Exposure
Requirement
∆
R ±(%+0.005Ω)
Limit
Typical
Within specified
—
tolerance
Within specified
—
T.C.R.
±2%
±0.5%
±1%
±1%
±2%
±2%
±1%
±0.3%
±0.5%
±1%
±1%
±0.3%
Test Method
25°C
+25°C/+55°C and +25°C/+125°C
Rated power x 2.5 for 5 seconds
260°C ± 5°C, 10 ± 1 second
-55°C (30 minutes), +125°C (30 minutes), 100 cycles
40°C ± 2°C, 90%~95%RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
70°C ± 2°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
+125°C, 1000 hours
12/17/12
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
39
resistors
UR73
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