BR
SERIES
TM CURRENT SENSE/LOW OHM
CERAMIC ENCASED TYPE
CERAMIC ENCASED
Slim Type Metal Plate Type Low Inductance
PHYSICAL CONFIGURATION
PROFILE/SIDE VIEW
W
H
φd
FRONT VIEW
TYPE BR-S
15.0+2.0
P+1.0
Resistance
Measurement Point
TYPE BR-P
FRONT VIEW
P+1.0
PROFILE/SIDE VIEW
3.5+0.5
5.0+0.5
5.0+1.0
3.0
Resistance
Measurement Point
TYPE BR-
FRONT VIEW
8.0+1.0
5.0+1.0
P+1.0
Resistance
Measurement Point
L L
L
TM TM
TM
DIMENSIONS (mm)
W
+1
L
+1 H
+1 φd
+0.05 P
+1
RESISTANCE
RANGE
min max
TYPICAL
WT. PER
PC [gms]
POWER
RATING
at 70 C°
HTR
TYPE
BR-2 2W 14.0 4.5 8.5 0.6/0.8 9.0 R10 R68 1.5
BR-3 3W 15.0 5.0 13.0 0.6/0.8 9.0 R10 R68 2.2
BR-5 5W 15.0 5.0 18.0 0.6/0.8 9.0 R10 1R0 3.4
BR-10 10W 26.5 5.0 18.0 0.8 20.0 R10 1R2 6.4
Notes : These resistors are available in a choice of 3 mounting configurations to suit the varied needs of different circuit
designers.
T ype BR- and BR - P are 2 different preforming styles.
T ype BR - S has straight leads - MPC style and can be mounted flush with the PCB for rigid mounting.
The measurement point at which the resistance value must be checked is clearly indicated in the diagram given
above.
The resistance values must be checked using 4½ digit micro ohm meter with four wire system and insulated clips.
Alloy Resistance Element
Preformed For Low
Inductance
Fire Retardant
Ceramic Case
Alloy Resistance
Wire / Strip
Spot Welded to
Copper Terminal
Inorganic Fire Retardant
Encapsulant
Tin Plated
Copper Terminals
CURRENT SENSE/LOW OHM
CERAMIC ENCASED TYPE
BR
ELECTRICAL AND ENVIRONMENTAL CHARACTERISTICS / DATA
TYPICAL APPLICATION
ORDERING INFORMATION
TOLERANCE
RESISTANCE VALUE
HTR TYPE
SERIES
BR BR5 R15 K
Note : Types BR-2, 3 and 5 are available with choice of lead diameters - 0.6mm or 0.8mm. If this is not
specified at the time of ordering, the device will be supplied with 0.8mm diameters leads.
Ambient Temperature [°C]
120
100
80
40
0
70°C
40 80 120 160 200 240 275
Rated Dissipation [%]
DERATING CURVE
Test Performance Requirements
Resistance tolerance + 10% [K]; + 5% [J]
Rated ambient temperature at 70°C full power dissipation
[ see derating curve]
Dielectric withstanding voltage Max. ∆R + [2% + R05]
Insulation resistance > 1000 M [minimum]
Temperature co-efficient + 350 ppm/°C
Temperature rise Refer temperature rise chart
Short time overload Max ∆R+ 2%
Moisture Resistance Max ∆R+ 3%
Load life Max ∆R+ 5%
Ambient operating
temperature range. -40°C to +155°C
Flame test UL Specifications have been
met satisfactorily
These low inductance and flame retardant resistors have evolved to become cost effective solutions for applications like
the protection of the output transistor in audio visual equipment and current sensing in switching and linear power
supplies. By providing low resistance value coupled with low inductance, the switching distortion with high frequency
which affects the sound quality of audio equipment is minimised. The very nature of it's size and construction makes the BR
series thin and light weight which translates into the saving of PCB space.
Note : Due to recent technological advances, the ceramic cases used may be steatite ceramic or corderite ceramic or high
alumina ceramic depending on the nature of the application. Hence the ceramic cases may be off-white or variations of
brown and variations of grey; colours which are inherent to these ceramic materials.
Temperature rise chart
150
100 Measuring
Point
50
0
10W
5W
3W
2W
100
50
Load factor (%)
Temperature rise (°C)
TM
