52 KOA Speer Electronics, Inc. • 199 Bolivar Drive • 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. 11/13/08
BLR
ceramic case surface mount resistor
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
EU
dimensions and construction
ordering information
J: ±5%
K: ±10%
N: No surface
treatment
3 digits
1L: 1W
2L: 2W
3L: 15W
TE: embossed plastic
1, 2: 1,000 pieces/reel
3: 750 pieces/reel
BLR
Type Power
Rating
Nominal
Resistance
Resistance
Tolerance
Termination
Material Packaging
New Part # 1L TE 50L JN
Size
Code
.512±.019
(13±0.5)
.709±.019
(18±0.5)
.748±.039
(19±1.0)
.248±.019
(6.3±0.5) –– .118±.012
(3.0±0.03)
.551±.039
(14±1.0)
.760±.039
(19.3±1.0)
.217±.019
(5.5±0.5)
.323±.019
(8.2±0.5)
––
.236±.006
(6.0±0.5)
.205±.019
(5.2±0.5)
.362
(9.2)
––
.012
(0.3)
1L
2L
3L
TW1HW2WL1L
Dimensions inches (mm)
––
.098±.039
(2.5±1.0)
.118±.039
(3.0±1.0)
t
T
H
Ceramic
Case
Electrode
Cement
Resistor
Element
L1
L
W1
W
1L & 2L
TCeramic
Case
Cement
Resistor
Element
L1
L
Electrode
H
Heat
Sink
W1
W
W2
t
3L
resistors
53
KOA Speer Electronics, Inc. • 199 Bolivar Drive • 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. 1/08/09
BLR
ceramic case surface mount resistor
Operating
Temperature
Range
Rated
Ambient
Temperature
Resistance
Range*
Part
Designation
Power
Rating
T.C.R.
(ppm/°C)
Max.
applications and ratings
BLR1L 1W
BLR2L 2W
BLR3L 15W**
8mΩ- 50mΩ
±100 8mΩ- 50mΩ-40°C to +180°C+70°C
* Please consult with us in advance about resistance value for custom-made products
** It is assumed to be used on aluminum circuit board
Derating Curve
environmental applications
% Rated Power
100
80
60
40
20
-40 -20 0 2060 80100120160
70
40
Ambient Temperature
(°C)
0
140
180
Performance Characteristics
Parameter
Requirement ∆R
Limit Typical Test Method
Resistance 25°C
Within specified
tolerance ––
T.C.R. Room temp. +100°C UP
Within specified
value ––
Cold Resistance -55°C, 1000 hours
±5.0% ±2.0%
Heat Resistance +125°C, 1000 hours
±5.0% ±2.0%
Moisture Resistance 40°C ± 2°C, Power rating x 1/10, 90% - 95% RH, 1000 hours,
1.5 hr ON, 0.5 hr OFF cycle
±5.0% ±2.0%
Long Life 70°C ± 2°C, 1000 hours
1.5 hr ON, 0.5 hr OFF cycle
±5.0% ±2.0%
8mΩ- 50mΩ
Resistance
Tolerance
J: ±5%
K: ±10%
resistors
