BLR
resistors
ceramic case surface mount resistor
EU
features
•
Suitable to detect large current due
to ultra low resistances
•
Flame retardant resistor in a ceramic case
•
All custom-made products
•
Automatic mounting is available
•
Products with lead-free terminations meet EU RoHS
and China RoHS requirements
dimensions and construction
1L & 2L
Resistor
Element
L
Cement
H
W
Size
Code
1L
2L
3L
L
L1
Dimensions
inches
(mm)
W
W2
H
W1
––
––
.362
(9.2)
.205±.019
(5.2±0.5)
.118±.012
.236±.006
(3.0±0.03)
(6.0±0.5)
t
––
––
.012
(0.3)
T
.098±.039
(2.5±1.0)
.118±.039
(3.0±1.0)
.512±.019 .551±.039 .217±.019
(13±0.5) (14±1.0) (5.5±0.5)
.748±.039 .248±.019
.709±.019
(19±1.0) (6.3±0.5)
(18±0.5)
.760±.039 .323±.019
(19.3±1.0) (8.2±0.5)
T
Ceramic
Case
L1
W1
Electrode
3L
Cement
L
Resistor
Element
H
t
T
W1
Electrode
W2
Heat
Sink
W
Ceramic
Case
L1
ordering information
New Part #
BLR
Type
1L
Power
Rating
1L: 1W
2L: 2W
3L: 15W
N
Termination
Material
N: No surface
treatment
TE
Packaging
TE: embossed plastic
1, 2: 1,000 pieces/reel
3: 750 pieces/reel
50L
Nominal
Resistance
3 digits
J
Resistance
Tolerance
J: ±5%
K: ±10%
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
11/13/08
52
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.
BLR
applications and ratings
Part
Designation
BLR1L
BLR2L
BLR3L
Power
Rating
1W
2W
15W**
±100
T.C.R.
(ppm/°C)
Max.
Resistance
Range*
8mΩ - 50mΩ
8mΩ - 50mΩ
8mΩ - 50mΩ
J: ±5%
K: ±10%
+70°C
-40°C to +180°C
Resistance
Tolerance
Rated
Ambient
Temperature
Operating
Temperature
Range
ceramic case surface mount resistor
* Please consult with us in advance about resistance value for custom-made products
** It is assumed to be used on aluminum circuit board
environmental applications
Derating Curve
100
80
% Rated Power
60
40
20
0
-40
-20
0
20
80 100
70
Ambient Temperature
(°C)
40
60
120 140
160
180
Performance Characteristics
Parameter
Resistance
T.C.R.
Cold Resistance
Heat Resistance
Moisture Resistance
Long Life
Requirement
∆
R
Limit
Typical
Within specified
––
tolerance
Within specified
––
value
±5.0%
±5.0%
±5.0%
±5.0%
±2.0%
±2.0%
±2.0%
±2.0%
Test Method
25°C
Room temp. +100°C UP
-55°C, 1000 hours
+125°C, 1000 hours
40°C ± 2°C, Power rating x 1/10, 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
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
1/08/09
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
53
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