UR73
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
Dimensions inches (mmꢀ
Size
Code
Resistance
Range
L
L
W
h
a
b
a
a
UR73
+.004
-.002
+.004
.039
.020
-.002
.016 .002 .010 .004 .012 .004
24m ~ 100m
D1E
D1J
D2A
2A
+±.ꢁ
+±.ꢁ
(±.4±±.±5ꢀ (±.25±±.ꢁꢀ (±.3±±.ꢁꢀ
W
b
(ꢁ.±
ꢀ
(±.5
ꢀ
-±.±5
-±.±5
.022 .004
+.005
-.004
(±.8 +-±±..ꢁꢁ5ꢀ
.031
10m ~ 27m
(±.55±±.ꢁꢀ
.063 .008
(ꢁ.6±±.2ꢀ
.02 .004 .014 .004
(±.5±±.ꢁꢀ (±.35±±.ꢁꢀ
Ni
30m ~ 100m
h
.014 .004
(±.35±±.ꢁꢀ
Plating
.024 .008
(±.6±±.2ꢀ
.02 .008
(±.5±±.2ꢀ
Protective
Coating
Resistive Inner
Film Electrode
10m ~ 16m
18m ~ 30m
.079 .008 .049 .008 .022 .004 .016 .008
(2.±±±.2ꢀ (ꢁ.25±±.2ꢀ (±.55±±.ꢁꢀ (±.4±±.2ꢀ
Ceramic
Substrate
+.008
.012
-.004
.079 .008 .049 .008 .02 .004 .016 .008
(2.±±±.2ꢀ (ꢁ.25±±.2ꢀ (±.55±±.ꢁꢀ (±.4±±.2ꢀ
33m ~ 100m
(±.3 +-±±..ꢁ2ꢀ
L
a
a
UR73D
.039 .008
(ꢁ.±±±.2ꢀ
10m ~ 16m
18m ~ 27m
.126 .008 .063 .008 .024 .004 .020 .008
(3.2±±.2ꢀ (ꢁ.6±±.2ꢀ (±.6±±.ꢁꢀ (±.5±±.2ꢀ
D2B
2B
.031 .008
(±.8±±.2ꢀ
W
b
+.008
.016
-.004
.126 .008 .063 .008 .024 .004 .020 .012
Solder
Plating
30m ~ 100m
(±.4 +-±±..ꢁ2ꢀ
(3.2±±.2ꢀ (ꢁ.6±±.2ꢀ (±.6±±.ꢁꢀ (±.5±±.3ꢀ
h
Ni
Plating
.063 .012
(ꢁ.6±±.3ꢀ
.026 .012
(±.65±±.3ꢀ
Resistive
Film
Inner
10m ~ 30m
.197 .008 .098 .008 .026 .004 .026 .012
(5.±±±.2ꢀ (2.5±±.2ꢀ (±.65±±.ꢁꢀ (±.65±±.3ꢀ
D2H
D3A
Electrode
33m ~ 100m
Protective
Coating
Ceramic
Substrate
.079 .012
(2.±±±.3ꢀ
.031 .012
(±.8±±.3ꢀ
10m ~ 30m
.248 .008 .122 .008 .024 .004 .031 .012
(6.3±±.2ꢀ (3.ꢁ±±.2ꢀ (±.6±±.ꢁꢀ (±.8±±.3ꢀ
33m ~ 100m
ordering information
New Part #
UR73
2A
T
TD
R10
F
Termination
Material
Nominal
Type
Power Rating
Packaging
Tolerance
F: 1%
Resistance
UR73
UR73D
1E: 0.125W
1J: 0.2W
2A: 0.25W
2B: 0.5W
2H: 0.75W
3A: 1W
T: Sn
TP: 2mm pitch
punch paper
(1E)
TD: 7" punched
paper tape
(1J, 2A, 2B)
All values less than
0.1Ω (100mΩ) are
expressed in mΩ with
“L” as decimal.
Ex: 20mΩ = 20L0
TE: 7" embossed plastic
(2H, 3A)
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