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2001 Jul 13
23
BCcomponents
Product specification
Professional power metal film resistors
PR01/02/03
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:
L
ower
C
ategory
T
emperature,
U
pper
C
ategory
T
emperature; 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 7 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 7
Test procedures and requirements
IEC
60115-1
CLAUSE
IEC
60068-2
TEST
METHOD
TEST
PROCEDURE
REQUIREMENTS
Tests in accordance with the schedule of IEC publication 60115-1
4.4.1
visual examination
no holes; clean surface;
no damage
see Tables 4, 5 and 6
R
R
nom
: max.
±
5%
4.4.2
4.5
dimensions (outline) gauge (mm)
resistance
applied voltage (+0/
10%):
R
<
10
:
0.1 V
10
≤
R
<
100
: 0.3 V
100
≤
R
<
1 k
: 1 V
1 k
≤
R
<
10 k
: 3 V
10 k
≤
R
<
100 k
: 10 V
100 k
≤
R
<
1 M
: 25 V
R = 1 M
: 50 V
thermal shock: 3 s; 350
°
C;
6 mm from body
isopropyl alcohol or H
2
O
followed by brushing
in accordance with
“MIL 202 F”
2 s; 235
°
C
maximum voltage 500 V (RMS)
during 1 minute; metal block method
4.18
20 (Tb)
resistance to
soldering heat
component solvent
resistance
R/R max.:
±
1% + 0.05
4.29
45 (Xa)
no visual damage
4.17
4.7
20 (Ta)
solderability
voltage proof on
insulation
good tinning; no damage
no breakdown or flashover