KOA LR72CDTE2L0J Surface mount custom milli-ohm resistor Datasheet

SS-238 R3
6/1/07
5:13 PM
Page 1
KOA SPEER ELECTRONICS, INC.
SS-238 R3
AHA 6/01/07
Surface Mount Custom
Milli-Ohm Resistor
Type LR72 A/B/C
CERTIFIED
CERTIFIED
1. Features
■
■
■
■
■
Superior thermal expansion cycling
Inductance less than 10 nanohenries
Flameproof
Available Pb-free/RoHS compliant
■
■
■
Lead flexible for thermal expansion
Low termination stress (“J” leads)
Shape provides cooler operation
Custom values available
2. Applications
■
■
■
■
Current sensing
Low inductance
AC applications (please contact factory)
■
Feedback
Surge & pulse
3. Type Designation
The type designation shall be in the following form:
New Type
LR72
A
D
TE
2L0
J
Type
Size
Termination
Material
Packaging
Nominal
Resistance
Tolerance
A
B
C
D: SnAgCu
N: CuNi*
(non-presolder)
(Other termination
styles may be available,
please contact factory
for options)
TE: 7" embossed plastic
(LR72A, B - 2,000
pieces/reel)
(LR72C 1,500 pieces/reel)
2mΩ: 2L0
“L” indicates
the decimal in
milliohms
J: ± 5%
4. Standard Applications
T.C.R.
(ppm/°C)
Max.
Part
Designation
Power
Rating
LR72A
LR72B
LR72C
1/2W @ 25°C
1/4W @ 25°C
1W @ 70°C
±100
±350
Standard
Resistance
Resistance
Tolerance
2mΩ ~ 8mΩ
3mΩ ~ 5mΩ
2mΩ, 3mΩ
J: ±5%
Rated
Ambient
Temperature
Operating
Temperature
Range
+70°C
-40°C to +180°C
+85°C
-40°C to +155°C
PAGE 1 OF 4
Bolivar Drive
■
P.O. Box 547
■
Bradford, PA 16701
■
USA
■
814-362-5536
■
Fax 814-362-8883
■
www.koaspeer.com
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
SS-238 R3
6/1/07
5:13 PM
Page 2
KOA SPEER ELECTRONICS, INC.
SS-238 R3
5. Dimensions
Copper Nickel
Alloy
Termination
LR72A
3.75 size only
W
t d
L2
L
L2
LR72A
Dimensions inches (mm)
W
t
L2 +0.1
-.02
Size
Code
L
LR72A
(8.00)
.39±.004
(10.0±0.1)
.079
(2.0)
.20±.008
(5.2±0.2)
.079
(2 Max.)
.006
(0.16)
LR72A
(5.00)
.39±.004
(10.0±0.1)
.079
(2.0)
.20±.008
(5.2±0.2)
.079
(2 Max.)
.009
(0.22)
LR72A
(3.75)
LR72A
(2.50)
.39±.004
(10.0±0.1)
.39±.004
(10.0±0.1)
.079
(2.0)
.079
(2.0)
.20±.008
(5.2±0.2)
.20±.008
(5.2±0.2)
.079
(2 Max.)
.079
(2 Max.)
.013
(0.32)
.019
(0.47)
d
Copper Nickel
Alloy
W
t d
Termination
g
Size
Code
g
L2
L
LR72B
L2
Dimensions inches (mm)
L2 +0.1
W
t
d
-.02
L
.39±.004
(10.0±0.1)
.079
(2.0)
.118±.008 .079
(3.0±0.2) (2 Max.)
.026
(0.66)
g
.043±.008
(1.1±0.2)
LR72B
W
Size
Code
Copper Nickel
Alloy
t
LR72C
Dimensions inches (mm)
W
t
a
L
d
.44±.016 .126±.016 .137±.016 .189±.030 .093±.010
(11.2±0.4) (3.2±0.4)
(3.5±0.4)
(4.8±.75) (2.35±.25)
Termination
d
a
L
LR72C
6. Characteristics
Item
Requirement
Test Methods (JIS C 5202)
Resistance
Within regulated tolerance
25°C
T.C.R.
Within specified T.C.R.
Room temperature/100°C up,
LR72C: Room temperature/25°C ~ 200°C
Resistance to
Soldering Heat
± 2.0%
350°C ±10°C, 3s;
LR72C: 260°C ± 5°C, 10 seconds
Solderability
95% Coverage min.
235°C ±5°C, 5s
Moisture Resistance
±3%
40°C 90% ~ 95% RH, 1000h. No load
Moisture Resistance
±5%
Power rating X 1/10, 40°C, 90% ~ 95% RH.
1000h, 1.5h ON 0.5h OFF cycle
Load Life
±5% (A & B), ±3% (C)
Rating voltage, 1000h, 1.5h ON
0.5h OFF cycle
PAGE 2 OF 4
Bolivar Drive
■
P.O. Box 547
■
Bradford, PA 16701
■
USA
■
814-362-5536
■
Fax 814-362-8883
■
www.koaspeer.com
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
SS-238 R3
6/1/07
5:13 PM
Page 3
KOA SPEER ELECTRONICS, INC.
SS-238 R3
7. Derating Curve
For temperature in excess of 70°C,
the load shall be derated in accordance
with the following figure.
100
LR72C
% Rated Power
80
60
40
LR72A, 72B
20
0
-40
0
160 200
80
120
70 85
155 180
Ambient Temperature
(°C)
40
8. Packaging Specifications
8.1 Carrier Dimensions
.059
(1.5 +0.1
-0 )
B
E
W
A
T1
Embossed
Carrier
P1
T1
P2
P0
Direction of Feed
Dimensions in inches (mm)
Type
A
B
E
W
P0
P1
P2
T1
LR72A
.057
.224
.069
(1.45 ± 0.2) (5.7 ± 0.2) (1.75 ± 0.1)
.079
(2.0)
.157
(4.0 ± 0.1)
.315
(8.0 ± 0.1)
.079
(2.0)
.091
(2.3 ± 0.2)
LR72B
.057
.134
.069
(1.45 ± 0.2) (3.4 ± 0.2) (1.75 ± 0.1)
.079
(2.0)
.157
(4.0 ± 0.1)
.315
(8.0 ± 0.1)
.079
(2.0)
.098
(2.5 ± 0.2)
LR72C
.461
.169
.069
.945
.157
(11.7 ± 0.1) (4.3 ± 0.1) (1.75 ± 0.1) (24.0 ± 0.2) (4.0 ± 0.1)
.315
(8.0 ± 0.1)
.079
(2.0)
___
PAGE 3 OF 4
Bolivar Drive
■
P.O. Box 547
■
Bradford, PA 16701
■
USA
■
814-362-5536
■
Fax 814-362-8883
■
www.koaspeer.com
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
SS-238 R3
6/1/07
5:13 PM
Page 4
KOA SPEER ELECTRONICS, INC.
SS-238 R3
8. Packaging Specifications (continued)
8.2 Reel Dimensions
øA
W1
E
øc
øB
Dimensions in inches (mm)
Type
A
B
C
E
W1
LR72A
10.0
3.15
.511
.079
1.0
+1.0
LR72B (255 ± +0.0
-3.0 ) (80 ± -0 ) (13.0 ± 0.2) (2.0 ± 0.5) (25.5 ± 2.0)
LR72C
12.99
3.94
.511
.079
1.0
(330 ± 2.0) (100 ± 2.0) (13.0 ± 0.2) (2.0 ± 0.5) (25.5 ± 2.0)
9. Pad Dimensions
Dimensions in inches (mm)
W
L
A
L
.622
(16.0)
W
.118
(3.0)
H
.236
(6.0)
A
.394
(10.0)
B
.622
(16.0)
.118
(3.0)
.150
(3.8)
.394
(10.0)
.C
.369
(9.36)
.121
(3.07)
.142
(3.60)
.127
(3.22)
W
A
H
PAGE 4 OF 4
Bolivar Drive
■
P.O. Box 547
■
Bradford, PA 16701
■
USA
■
814-362-5536
■
Fax 814-362-8883
■
www.koaspeer.com
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
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