TM
CURRENT SENSE/LOW OHM
CERAMIC ENCASED TYPE
Fire Proof
Ceramic Housing
SERIES
Alloy Electrical
Resistance Ribbon
RL
LOW OHM / LOW INDUCTANCE
Power Ceramic Encased Resistors
Industrial Applications
Quartz Silica
Powder
Tinned Copper
Terminals
All Welded Construction
PHYSICAL CONFIGURATION
LM
d
L
35+3.0
35+3.0
D
6mm reduced solderability in this area
HTR
TYPE
POWER
RATING
at 25°C
(Ambient)
0.5W
1W
2W
3W
5W
10W
DIMENSIONS (mm)
L
+1
8
10
10
14
22
42
LM
+1
30
30
30
40
45
60
D
+0.5
3
3
4
5
8
9
RESISTANCE TYPICAL
RANGE
WT.
min max PER PC
d
(gms)
+0.05
0.25
0.3
0.4
1
2.8
6.1
RL0.5
RL1
RL2
RL3
RL5
RL10
0.6/0.8 R004 R055
0.6/0.8 R005 R10
0.8
0.8
1
1
R005 R10
R0045 R22
R0025 R39
R004 R80
Resistance values must be checked using 4½ digit micro-ohm meter with four wire system and insulated
clips. The resistance value must be checked at dimension LM as given in the table above.
TM
CURRENT SENSE/LOW OHM
CERAMIC ENCASED TYPE
RL
ELECTRICAL AND ENVIRONMENTAL CHARACTERISTICS / DATA
Test
Resistance tolerance
Rated ambient temperature
Insulation resistance
Performance Requirements
+ 10% [K]; + 5% [J]; + 3%[H];
+ 2% [G]; + 1% [F]
at 25°C full power dissipation
derated linearly to zero at 275°C
> 1000 Mega Ohms
5 times rated wattage for 5 sec.
Short time overload
Ambient operating
temperature range
Temperature co-efficient
of resistance
Di-electric withstanding voltage 500 Volts r.m.s.
-40°C to +155°C
+60ppm/°C to + 550ppm/°C
depending on resistance value
and power rating. (measured from
-55°C to 125°C referenced to + 25°C)
TYPICAL APPLICATION
RL Series
is an innovative method of providing low inductance resistors in a cylindrical ceramic body and is
increasingly replacing the moulded version.
The resistive element consists of a flat metal band which is spot welded to the copper terminals before
encapsulation.
The resistors are finding increasing use in industrial applications where pulse rating and ability to absorb high
inrush current are required.
Another important application is Current Sensing in applications which include switching and linear power
supplies, instruments & power amplifiers.
For the effective utilisation of these resistors, please refer to
“Application / design notes for current
sense resistors”
ORDERING INFORMATION
RL
RL2
R005
F
TOLERANCE
RESISTANCE VALUE
HTR TYPE
SERIES
Note :
Type RL 0.5 and RL-1 can be supplied with lead diameter of 0.6mm instead of 0.8mm. Please specify at
the time of placing the order.
Taping :Types
RL 0.5, 1, 2, 3 and 5 can be supplied in taped form. Please refer to
tape/ammo pack
specifications. Tape/Reel
also possible, please contact factory.
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