UR73
resistors
current sensing chip resistor
EU
features
•
•
•
•
•
•
Very low resistance, high precision reliability
Suitable for reflow and flow soldering
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
dimensions and construction
UR73
a
L
a
Size
Code
D1E
Resistance
Range
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
.012
+.008
-.004
.079±.008 .049±.008 .02±.004 .016±.008
33m ~ 100m
(2.0±0.2) (1.25±0.2) (0.55±0.1) (0.4±0.2) (0.3
+0.2
)
-0.1
.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
W
Solder
Plating
Ni
Plating
b
Resistive
Film
Ceramic Protective
Substrate Coating
Inner
Electrode
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)
R10
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.
12/16/08
36
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
PMS 300 neg.
Black neg.
UR73
applications and ratings
Part
Designation
UNDER
DEVLOP.
current sensing chip resistor
Power
Rating
T.C.R.
(ppm/°C)
Max.
±100
±500
±100
±200
±300
±250
±100
±250
±200
±100
±200
±250
±100
±250
±100
Resistance Range
F (±1%) E-24,
25mΩ, 50mΩ
30m - 100mΩ
24m - 27mΩ
47m - 100mΩ
30m - 43mΩ
10m - 27mΩ
10m - 30mΩ
47m - 100mΩ
33m - 43mΩ
10m - 27mΩ
47m - 100mΩ
30m - 43mΩ
10m - 30mΩ
33m - 100mΩ
10m - 30mΩ
33m - 100mΩ
Absolute
Maximum
Working
Voltage
Maximum
Overload
Voltage
(5 sec. max.)
Operating
Temperature
Range
UR73D1E
1/8W (.125W)
UR73D1J
UR73D2A
UR732A
UR73D2B
UR732B
UR73D2H
UR73D3A
1/5W (.2W)
1/4W (.25W)
1/4W (.25W)
1/2W (.5W)
1/4W (.25W)
1/2W (.5W)*
3/4W (.75W)
1W (1W)
√
P*R
√
P*R x 2.5
-55°C
to
+125°C
* Please contact factory for Power Rating
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 (.5W) (1)
2B (.5W) (2)
2A (1)
2A (2)
2B (.25W) (1)
2B (.25W) (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
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
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
1/08/09
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
37
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