RL
SERIES
TM
PHYSICAL CONFIGURATION
Power Ceramic Encased Resistors
Industrial Applications
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.
LOW OHM / LOW INDUCTANCE
6mm reduced solderability in this area
d
35+3.0 35+3.0
L
LM
D
CURRENT SENSE/LOW OHM
CERAMIC ENCASED TYPE
HTR
TYPE
POWER
RATING
at 25°C
(Ambient)
DIMENSIONS (mm) RESISTANCE
RANGE
min max
TYPICAL
WT.
PER PC
(gms)
L
+1
D
+0.5
d
+0.05
LM
+1
RL0.5 0.5W 8 30 3 0.6/0.8 R004 R055 0.25
RL1 1W 10 30 3 0.6/0.8 R005 R10 0.3
RL2 2W 10 30 4 0.8 R005 R10 0.4
RL3 3W 14 40 5 0.8 R0045 R22 1
RL5 5W 22 45 8 1 R0025 R39 2.8
RL10 10W 42 60 9 1 R004 R80 6.1
Alloy Electrical
Resistance Ribbon
Tinned Copper
Terminals
All Welded Construction
Quartz Silica
Powder
Fire Proof
Ceramic Housing
CURRENT SENSE/LOW OHM
CERAMIC ENCASED TYPE
TOLERANCE
RESISTANCE VALUE
HTR TYPE
SERIES
R005
RL RL2 F
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
also possible, please contact factory.
tape/ammo pack
specifications. Tape/Reel
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”
RL
ELECTRICAL AND ENVIRONMENTAL CHARACTERISTICS / DATA
TYPICAL APPLICATION
ORDERING INFORMATION
Performance Requirements
Test
Resistance tolerance + 10% [K]; + 5% [J]; + 3%[H];
+ 2% [G]; + 1% [F]
at 25°C full power dissipation
Rated ambient temperature derated linearly to zero at 275°C
Insulation resistance > 1000 Mega Ohms
Short time overload 5 times rated wattage for 5 sec.
Di-electric withstanding voltage 500 Volts r.m.s.
Ambient operating -40°C to +155°C
temperature range
Temperature co-efficient +60ppm/°C to + 550ppm/°C
of resistance depending on resistance value
and power rating. (measured from
-55°C to 125°C referenced to + 25°C)
TM
