LSR37
Vishay BCcomponents
High Voltage Surge Metal Glaze Leaded Resistor
FEATURES
•
High pulse-loading (10 kV as specified)
capability (flashes)
•
Good replacement for carbon-composite
resistors
•
Lead (Pb)-free solder contacts
•
Pure Tin plating provides compatibility with lead (Pb)-free
and lead containing soldering processes
A metal glazed film is deposited on a high grade ceramic
body. After that caps are applied to the rods and tinned
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 IEC 60068-2-45.
•
Compliant to RoHS directive 2002/95/EC
APPLICATIONS
•
Application in overload and high voltage pulse hazard
circuits (TV-sets, monitors), high power electronic ballasts
TECHNICAL SPECIFICATIONS
DESCRIPTION
Resistance Range
(1)
Resistance Tolerance and Series
Rated Dissipation,
P
70
Thermal Resistance,
R
th
Temperature Coefficient
Voltage Coefficient
Maximum Permissible Voltage
U
max.
Dielectric Withstanding Voltage of the Insulation for 1 Min
Basic Specifications
Climatic Category (IEC 60068-1)
Stability After:
Load (1000 h,
P
70
)
Long Term Damp Heat Test (56 Days)
Soldering (10 s, 260 °C)
High Voltage Test for
R-Value
> 3.3 kΩ, 10 kV; 1 nF; 50 x 12/Min
ΔR
max.: ±
(3.0
%
R
+ 0.10
Ω)
ΔR
max.: ±
(3.0
%
R
+ 0.10
Ω)
ΔR
max.: ±
(1.0
%
R
+ 0.10
Ω)
ΔR/R
max.: ± 20 %
(typical value ± 10 %)
ΔR/R
max.: ± 20 %
(typical value: ± 10 %)
220
Ω
to 910
Ω
VALUE
1 kΩ to 10 kΩ
± 10 %; ± 20 %; E12 series
0.5 W
120 K/W
0 ppm/K to + 600 ppm/K
0 to + 350 ppm/V
V=
Pn
x
R
700 V
IEC 60115-1
55/155/56
- 600 ppm/K to + 200 ppm/K
± 50 ppm/V
ESD Contact Discharge 12 kV; 100 Pulses
Note
(1)
R values below 220
Ω
are available on request
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Document Number: 28735
Revision: 19-Oct-09
LSR37
High Voltage Surge Metal Glaze
Leaded Resistor
PART NUMBER
PART NUMBER: LSR3700001002KA100
Vishay BCcomponents
L
MODEL/SIZE
LSR3700
S
R
3
7
0
0
0
0
1
0
0
2
K
A
1
0
0
SPECIAL
The 2 digits
are used for all
special parts.
00
= Standard
VARIANT
0
= Neutral
Z
= Value overflow
(Special)
TCR/MATERIAL
0
= Standard
VALUE
3 digit value
1 digit multiplier
MULTIPLIER
9
= *10
-1
0
= *10
0
1
= *10
1
2
= *10
2
TOLERANCE
K
= ± 10 %
M
= ± 20 %
PACKAGING
(1)
A1
R5
PRODUCT DESCRIPTION: LSR37 10 % A1 10K
LSR37
MODEL/SIZE
LSR37
10 %
TOLERANCE
±
10
%
±
20
%
A1
PACKAGING
(1)
A1
R5
10K
RESISTANCE VALUE
220R
= 220
Ω
1K2
= 1.2 kΩ
Notes
(1)
Please refer to table PACKAGING
• The PART NUMBER is shown to facilitate the introduction of a unified part numbering system for ordering products
PACKAGING
AMMO PACK
MODEL
TAPING
PIECES
LSR37
Axial, 52 mm
1000
CODE
A1
PIECES
5000
CODE
R5
REEL
DIMENSIONS
L
1
Ø
d
Ø
D
L
2
Outline
DIMENSIONS
- resistor type and relevant physical dimensions
TYPE
LSR37
Ø D
max.
4.0
L
1 max.
9.0
L
2 max.
10.0
Ød
0.7 ± 0.03
Document Number: 28735
Revision: 19-Oct-09
For technical questions, contact:
filmresistorsleaded@vishay.com
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191
LSR37
Vishay BCcomponents
High Voltage Surge Metal Glaze
Leaded Resistor
MARKING
MASS
(mg)
457
MASS PER UNIT
TYPE
LSR37
The nominal resistance and tolerance are marked on the
resistor using colored bands in accordance with IEC 60062,
marking codes for resistors and capacitors.
Three bands are used for 20 % tolerance with no indication
for the tolerance. Four bands are used for 10 % tolerance.
Grey is used instead of silver for 10 % because metal
particles in the lacquer could affect high-voltage properties.
OUTLINES
The length of the body (L
1
) is measured by inserting the
leads into holes of two identical gauge plates and moving
these plates parallel to each other until the resistor body is
clamped without deformation (IEC 60294).
FUNCTIONAL PERFORMANCE
PRODUCT CHARACTERIZATION
Standard values of rated resistance (nominal resistance) are taken from the E12 series with a tolerance of 10 % or 20 %. The
values of the E12 series are in accordance with IEC 60063.
The limiting voltage DC is not applicable, because the maximum rated voltage for the maximum
R
n
-value of 10 kΩ at
P
n
= 0.5 W
is only 70.7 V.
LIMITING VALUES
TYPE
MAXIMUM PERMISSIBLE VOLTAGE
U
max. (1)
(V)
V=
Pn
x
R
RATED DISSIPATION,
P
70
(W)
0.5
LSR37
Notes
(1)
The maximum voltage that may be continuously applied to the resistor element, see IEC 60115-1
•
The maximum permissible hot-spot temperature is 155 °C
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Document Number: 28735
Revision: 19-Oct-09
LSR37
High Voltage Surge Metal Glaze
Leaded Resistor
P
max.
(%
P
rated
)
100
Vishay BCcomponents
50
The power that the resistor can dissipate depends on the operating
temperature.
0
- 55
0
50
70
100
155
T
amb
(°C)
Maximum dissipation (P
max.
) in percentage of rated power as a
function of the ambient temperature (T
amb
).
Derating
10
4
ˆ
max.
P
(W)
10
3
10
2
10
1
10
- 6
10
- 5
10
- 4
10
- 3
10
- 2
10
- 1
Pulse on a regular basis; maximum permissible peak pulse power
P
max.
as a function of pulse duration (t
i
) for single pulse condition
t
i
(s)
1
Pulse Loading Capability
The resistors with straight leads are suitable for processing on automatic insersion equipment and cutting and bending machines.
the minimum pitch for this type is 6e (15 mm). For temperature rise at soldering place see figures below.
80
∆
T
(K)
60
30
40
20
20
10 mm
15 mm
50
∆
T
(K)
40
5 mm
10
0
0
0
0.4
0.8
P
(W)
1.2
0
0.4
0.8
P
(W)
1.2
Hot-spot temperature rise (ΔT) as a function of dissipated power
Temperature rise (ΔT) at the lead end (soldering point) as a function
of dissipated power at various lead lengths after mounting
Application Information
Document Number: 28735
Revision: 19-Oct-09
For technical questions, contact:
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193
LSR37
Vishay BCcomponents
TESTS AND REQUIREMENTS
Essentially all tests are carried out in accordance with
the IEC 60115-1 specifications, category LCT/UCT/56 (rated
temperature range: Lower Category Temperature, Upper
Category Temperature; damp heat, long term, 56 days).
The tests are carried out in accordance with IEC 60068-2-xx
test method under standard atmospheric conditions
according to IEC 60068-1, 5.3.
In the Test Procedures and Requirements table the tests and
requirements are listed with reference to the relevant
clauses of IEC 60115-1 and IEC 60068-2-xx test methods. A
short description of the test procedure is also given. In some
instances deviations from the IEC recommendations were
necessary for our method of specifying.
All soldering tests are performed with mildly activated flux.
High Voltage Surge Metal Glaze
Leaded Resistor
TEST PROCEDURES AND REQUIREMENTS
IEC
60115-1
CLAUSE
4.16
4.16.2
4.16.3
4.16.4
IEC
60068-2-xx
TEST
METHOD
21 (U)
21 (Ua1)
21 (Ub)
21 (Uc)
TEST
PROCEDURE
REQUIREMENTS
Robustness of terminations:
Tensile all samples
Bending half number
of samples
Torsion other half
of samples
Ø 0.7 mm; load 10 N; 10 s
Ø 0.7 mm; load 5 N; 4 x 90°
3 x 360° in opposite directions
2 s; 235 °C: Solder bath method;
SnPb40
3 s; 245 °C: Solder bath method;
SnAg3Cu0.5
Thermal shock: 10 s; 260 °C;
3 mm from body
30 min at - 55
°C
and
30 min at + 155
°C;
5 cycles
3 x 1500 bumps in 3 directions; 40 g
Frequency 10 Hz to 500 Hz; displacement
1.5 mm or acceleration 10 g; 3 directions;
total 6 h (3 x 2 h)
16 h; 155
°C
24 h; 55
°C;
90 % to 100 % RH
2 h; - 55
°C
2 h; 8.5 kPa; 15 °C to 35
°C
5 days; 55
°C;
95 % to 100 % RH
56 days; 40
°C;
90 % to 95 % RH;
dissipation 0.01
P
70
;
limiting voltage
U
max.
100 V
DC
1000 h at 70
°C;
P
70
or
U
max.
220
Ω
to 910
Ω
1 kΩ to 10 kΩ
U
RMS
= 700 V during 1 min;
V-block method
U
= 500 V
DC
during 1 min;
V-block method
ΔR
max.: ±
(3.0
%
R
+ 0.10
Ω)
ΔR
max.: ±
(3.0
%
R
+ 0.10
Ω)
0 to + 600 ppm/K
- 600 to + 200 ppm/K
No breakdown
R
ins
min.: 10
4
MΩ
R
ins
min.: 10
3
MΩ
ΔR
max.: ±
(3.0
%
R
+ 0.10
Ω)
Number of failures < 10 x 10
-6
Number of failures < 10 x 10
-6
No damage
ΔR
max.: ±
(1.0
%
R
+ 0.10
Ω)
4.17
20 (Ta)
Solderability
Good tinning; no damage
4.18
4.19
4.20
20 (Tb)
14 (Na)
29 (Eb)
Resistance to
soldering heat
Rapid change of temperature
Bump
ΔR
max.: ±
(1.0
%
R
+ 0.10
Ω)
ΔR
max.: ±
(1.0
%
R
+ 0.10
Ω)
No damage
ΔR
max.: ±
(1.0
%
R
+ 0.10
Ω)
No damage
ΔR
max.: ±
(1.0
%
R
+ 0.10
Ω)
4.22
4.23
4.23.2
4.23.3
4.23.4
4.23.5
4.23.6
6 (Fc)
Vibration
Climatic sequence:
2 (Ba)
30 (Db)
1 (Aa)
13 (M)
30 (Db)
Dry heat
Damp heat (accelerated) 1st
cycle
Cold
Low air pressure
Damp heat (accelerated)
remaining cycles
Damp heat
(steady state)
Endurance
Temperature coefficient
Voltage proof on insulation
Insulation resistance
4.24.2
4.25.1
4.8
4.7
4.6.1.1
78 (Cab)
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For technical questions, contact:
filmresistorsleaded@vishay.com
Document Number: 28735
Revision: 19-Oct-09
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