LSR37 Datasheet, PDF (2/8 Pages) List of Unclassifed Manufacturers – Low ohmic surge resistor

BCcomponents
Low ohmic surge resistor
Product specification
LSR37
FEATURES
• High pulse-loading capability
(flashes)
• Good replacement for
carbon-composite resistors.
APPLICATIONS
• Application for overload and high
voltage pulse hazard circuits
(TV-sets, monitors).
DESCRIPTION
A metal glazed film is deposited on a
high grade ceramic body. After that
caps are applied to the rods and
electrolytic copper wires are welded to
these end caps.
The resistors are coated with a
light-blue lacquer which provides
electrical, mechanical and climatic
protection.
The encapsulation is resistant to all
cleaning solvents according to
“MIL-STD 202E, method 215” and
“IEC 60068-2-45”.
ORDERING INFORMATION
Ordering code (12NC)
• The resistors have a 12-digit
ordering code staring with 2322 245
• The subsequent 2 digits indicate the
resistor type and packaging; see
Table 1.
• The remaining digits indicate the
resistance value:
– The first 2 digits indicate the
resistance value.
– The last digit indicates the
resistance decade in accordance
with Table 2.
QUICK REFERENCE DATA
DESCRIPTION
Resistance range
Resistance tolerance and series
Maximum dissipation at
T_amb = 70 °C
Thermal resistance, R_th
Temperature coefficient
Voltage coefficient
Maximum permissible voltage
Dielectric withstanding voltage
of the insulation for 1 minute
Basic specifications
Climatic category (IEC 60068)
Stability after:
load (1000 hours)
climatic test
soldering
High voltage test for
R-value > 3.3 kΩ, 10 kV; 1 nF;
50 × 12/minutes
ESD contact discharge 12 kV;
100 pulses
VALUE
220 Ω to 910 Ω
1 kΩ to 10 kΩ
±10%; ±20%; E12 series
0.5 W
120 K/W
0 to +600 × 10^−6/K −600 to +200 × 10^−6/K
0 to +350 × 10^−6/K
±50 × 10^−6/V
V = P_n × R
700 V
IEC 60115-1B
55/155/56
∆R/R max.: ±3% + 0.1 Ω
∆R/R max.: ±3% + 0.1 Ω
∆R/R max.: ±1% + 0.1 Ω
∆R/R max.: ±20%
(typical value ±10%)
∆R/R max.: ±20%
(typical value: ±10%)
Table 1 Ordering code as function of tolerance and packaging
TYPE
LSR37
TOLERANCE
(%)
±10
±20
ORDERING CODE 2322 245 .....
1000 units
IN AMMOPACK
5000 units
ON REEL
12...
22...
11...
21...
Table 2 Last digit of 12NC
RESISTANCE
DECADE
220 to 910 Ω
1 to 9.1 kΩ
10 kΩ
LAST DIGIT
1
2
3
ORDERING EXAMPLE
The ordering code for a LSR37, resistor
value 1.5 kW, 10% tolerance,
supplied on a bandolier of 1000 units
in ammopack, is: 2322 245 12152.
2002 Sep 26
2