LSR37 Datasheet, PDF (7/8 Pages) List of Unclassifed Manufacturers – Low ohmic surge resistor

BCcomponents
Low ohmic surge resistor
Product specification
LSR37
TESTS AND REQUIREMENTS
Essentially all tests are carried out in accordance with the
schedule of “IEC publication 60115-1”, category
LCT/UCT/56 (rated temperature range: Lower Category
Temperature, Upper Category Temperature; damp heat,
long term, 56 days). The testing also covers the requirements
specified by EIA and EIAJ.
The tests are carried out in accordance with IEC publication
60068-2, “Recommended basic climatic and mechanical
robustness testing procedure for electronic components”
and under standard atmospheric conditions according to
“IEC 60068-1”, subclause 5.3.
In Table 4 the tests and requirements are listed with
reference to the relevant clauses of
“IEC publications 60115-1 and 60068-2”; 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.
Table 4 Test procedures and requirements
IEC
60 115-1
CLAUSE
IEC
60 068-2
TEST
METHOD
TEST
PROCEDURE
4.16
21 (U) robustness of terminations:
4.16.2 21 (Ua1) tensile all samples
∅0.7 mm; load 10 N; 10 s
4.16.3 21 (Ub)
bending half number
of samples
∅0.7 mm; load 5 N; 4 × 90°
4.16.4 21 (Uc)
torsion other half
of samples
3 × 360° in opposite directions
4.17
20 (Ta) solderability
4.18
20 (Tb) resistance to
soldering heat
4.19
14 (Na) rapid change of
temperature
4.20
29 (Eb) bump
2 s; 235 °C
thermal shock: 3 s; 350 °C;
6 mm from body
30 minutes at −55 °C and
30 minutes at +155 °C; 5 cycles
3 × 1500 bumps in 3 directions;
40 g
4.22
6 (Fc)
vibration
frequency 10 to 500 Hz;
displacement 1.5 mm or
acceleration 10 g; 3 directions;
total 6 hours (3 × 2 hours)
4.23
climatic sequence:
4.23.2
4.23.3
2 (Ba)
30 (Db)
dry heat
damp heat (accelerated)
1^st cycle
16 hours; 155 °C
24 hours; 55 °C; 90 to 100% RH
4.23.4
4.23.5
1 (Aa)
13 (M)
cold
low air pressure
2 hours; −55 °C
2 hours; 8.5 kPa; 15 to 35 °C
4.23.6 30 (Db)
damp heat (accelerated) 5 days; 55 °C; 95 to 100% RH
remaining cycles
4.24.2 3 (Ca)
damp heat
(steady state)
56 days; 40 °C; 90 to 95% RH;
dissipation 0.01 P_n;
limiting voltage 100 V (DC)
REQUIREMENTS
number of failures <10 × 10^−6
number of failures <10 × 10^−6
no damage
∆R/R max.: ±1.0% + 0.10 Ω
good tinning; no damage
∆R/R max.: ±1.0% + 0.10 Ω
∆R/R max.: ±1.0% + 0.10 Ω
no damage
∆R/R max.: ±1.0% + 0.10 Ω
no damage
∆R/R max.: ±1.0% + 0.10 Ω
R_ins min.: 1 0³ MΩ
∆R/R max.: ±3.0% + 0.1 Ω
∆R/R max.: ±3.0% + 0.1 Ω
2002 Sep 26
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