resistors
UR73
current sensing chip resistor
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
h
Protective
Coating
Resistive Inner
Film
Electrode
24m ~ 100m
D1J
.022±.004
+.005
10m ~ 27m .063±.008 .031 -.004 .02±.004 .014±.004 (0.55±0.1)
+0.15) (0.5±0.1) (0.35±0.1) .014±.004
30m ~ 100m (1.6±0.2) (0.8
-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)
2A
Ni
Plating
Resistance
Range (Ω)
D2A
a
W
b
Dimensions inches (mm)
W
h
a
Size
Code
D1E
L
a
UR73
33m ~ 100m .079±.008 .049±.008 .02±.004 .016±.008
L
b
.039 +.004 .020 +.004
-.002
-.002
+0.1
(1.0 -0.05 )
.016±.002 .010±.004 .012±.004
+0.1
(0.5 -0.05 ) (0.4±0.05) (0.25±0.1) (0.3±0.1)
Ceramic
Substrate
a
UR73D
L
(2.0±0.2) (1.25±0.2) (0.55±0.1) (0.4±0.2)
a
D2B
W
Solder
Plating
h
2B
Ni
Plating
.024±.008
(0.6±0.2)
.02±.008
(0.5±0.2)
.012 +.008
-.004
(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)
30m ~ 100m .126±.008 .063±.008 .024±.004 .020±.012
(3.2±0.2)
(1.6±0.2)
(0.6±0.1)
(0.5±0.3)
.016 +.008
-.004
(0.4 +0.2)
-0.1
Resistive
Film
Ceramic Protective
Substrate Coating
D2H
Inner
Electrode
ordering information
New Part #
UR73
Type
UR73
UR73D
2A
T
Power
Rating
1E: 0.125W
1J: 0.2W
2A: 0.25W
2B: 0.5W
2H: 0.75W
3A: 1W
Termination
Material
T: Sn
.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)
D3A
b
.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)
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.
38
1/10/11
KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
