DATA SHEET
LOW-OHMIC CHIP RESISTORS
LRC01
5%
size 1206
Product Specification – Jul 11, 2003 V.12
Phycomp
Product specification
Low-ohmic chip resistors
size 1206
FEATURES
•
Reduced size of final equipment
•
Low assembly costs
•
Higher component and equipment
reliability
•
Excellent performance at high
frequency.
APPLICATIONS
•
Televisions
•
Audio recorders
•
Telecommunication equipment
•
Notebook computers
•
Desktop computers
•
Battery chargers
•
Lighting.
DESCRIPTION
The resistors are constructed on a
high grade ceramic body (aluminium
oxide). Internal metal electrodes are
added at each end and connected
by a resistive paste which is applied
to the top surface of the substrate.
The composition of the paste is
adjusted to give the approximate
resistance required and the value is
trimmed to within tolerance by laser
cutting of this resistive layer.
The resistive layer is covered with a
protective coating and printed with
the resistance values. Finally, the
two external end terminations are
added. For ease of soldering the
outer layer of these end terminations
is a lead/tin alloy.
QUICK REFERENCE DATA
DESCRIPTION
Resistance range; note 1
Resistance tolerance
Temperature coefficient:
0.01
Ω ≤
R
<
0.02
Ω
0.02
Ω ≤
R
<
0.051
Ω
0.051
Ω ≤
R
<
0.10
Ω
0.10
Ω ≤
R
<
0.39
Ω
0.39
Ω ≤
R
<
0.51
Ω
0.51
Ω ≤
R
<
1
Ω
Absolute maximum at T
amb
= 70
°C
Maximum permissible voltage
Operating temperature range
Climatic category (IEC 60068)
Basic specification
Note
1. Non-E24 values are available on request.
ORDERING INFORMATION
Table 1
Ordering code indicating type and packing
≤±1500 ×
10
−6
/K
≤±1000×
10
−6
/K
≤±800×
10
−6
/K
≤±600×
10
−6
/K
≤±300×
10
−6
/K
≤±200 ×
10
−6
/K
0.25 W
200 V (DC or RMS)
−55
to
+125 °C
55/125/56
IEC 60115-8
±5%
VALUE
LRC01
5%
0.02
Ω
to 0.99
Ω;
E24 series
ORDERING CODE 2350 510 …..
TYPE
RESISTANCE
RANGE
0.01 to 0.99
Ω
TOL.
(%)
±5
Table 2
PAPER TAPE ON REEL
5000 UNITS
LRC01
10…
Last digit of 12NC
LAST DIGIT
0
7
Ordering code (12NC)
•
The resistors have a 12-digit
ordering code starting with
2350 510.
•
The subsequent 2 digits indicate
the resistor type and packing;
see Table 1.
•
The remaining 3 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.
RESISTANCE
DECADE
0.01 to 0.099
Ω
0.100 to 0.990
Ω
O
RDERING EXAMPLE
The ordering code of an LRC01
resistor, value 0.47
Ω,
supplied on
paper tape of 5000 units per reel is:
2350 510 10477.
2003 Jul 11 Rev.12
2
www.yageo.com
Phycomp
Product specification
Low-ohmic chip resistors
size 1206
FUNCTIONAL DESCRIPTION
Product characterization
The resistors are available in the
E24 series for resistors with a
tolerance of
±5%.
The values of the
E24 series are in accordance with
“IEC publication 60063”.
Limiting values
TYPE
LIMITING
LIMITING
(1)
POWER
VOLTAGE
(W)
(V)
200
0.25
0
−55
0
50
70
100 125
T
amb
(°C)
LRC01
5%
D
ERATING
The power that the resistor can dissipate depends on the operating
temperature; see Fig.1.
P
max
(%P
rated
)
100
CCB413
50
LRC01
Note
1. This is the maximum voltage that
may be continuously applied to
the resistor element, see
“IEC publication 60115-8”.
Fig.1
Maximum dissipation (P
max
) in percentage of rated power as a
function of the ambient temperature (T
amb
).
Temperature coefficient
Figure 2 shows the typical temperature coefficient of the resistor.
CCB945
3000
TC
(×10
−6
/K)
2500
2000
1500
1000
500
0
0
100
200
300
500
1000
R (mΩ)
Fig.2
Typical TC as a function of resistance.
2003 Jul 11 Rev.12
3
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Phycomp
Product specification
Low-ohmic chip resistors
size 1206
MECHANICAL DATA
Mass per 100 units
TYPE
LRC01
Marking
T
LRC01
5%
Outlines
MASS
(g)
1.0
protective coat
resistor layer
inner electrode
end termination
t
b
t
t
ceramic substrate
protective coat
marking
Each resistor is marked a 4-digit
code on the protective coating to
designate the nominal resistance
value.
4-D
IGIT
M
ARKING
The R is used as a decimal point,
the other 3 digits are significant.
Example
W
R220
CCA438
MARKING
R210
R560
P
ACKAGE MARKING
RESISTANCE
0.210
Ω
0.560
Ω
For dimensions see Table 3.
L
The packing is also marked and
includes resistance value, tolerance,
catalogue number, quantity,
production period, batch number and
source code.
Fig.3
Outlines.
Table 3
TYPE
LRC01
Chip resistor type and relevant physical dimensions; see Fig.3
L
(mm)
3.1
±0.10
W
(mm)
1.6
±0.10
T
(mm)
0.55
±0.10
t
t
(mm)
0.45
±0.25
t
b
(mm)
0.40
±0.25
2003 Jul 11 Rev.12
4
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Phycomp
Product specification
Low-ohmic chip resistors
size 1206
TEST AND REQUIREMENTS
Essentially all tests are carried out in
accordance with the schedule of
“IEC publication 60115-8”,
category
55/125/56 (rated temperature range
−55
to
+125 °C;
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,
“Recommended basic
Table 4
climatic and mechanical robustness
testing procedure for electronic
components”
and under standard
atmospheric conditions according to
“IEC 60068-1”,
subclause 5.3.
Unless otherwise specified the
following values apply:
Temperature: 15
°C
to 35
°C
Relative humidity: 45% to 75%
Air pressure: 86 kPa to 106 kPa
LRC01
5%
In Table 4 the tests and
requirements are listed with
reference to the relevant clauses of
“IEC publications 60115-8 and
60068”;
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.
Test procedures and requirements
IEC
60068-2
TEST
METHOD
IEC
60115-8
CLAUSE
TEST
PROCEDURE
REQUIREMENTS
Tests in accordance with the schedule of IEC publication 60115-8
4.4.1
4.4.2
visual
examination
dimensions
(outline)
gauge
no holes; clean surface;
no damage
0.45 mm
≤
T
≤
0.65 mm
1.45 mm
≤
W
≤
1.75 mm
3.0 mm
≤
L
≤
3.3 mm
4.5
4.18
4.29
20 (Tb)
45 (Xa)
resistance
resistance to
soldering heat
component
solvent
resistance
solderability
applied voltage (+0/−10%): 0.1 V
unmounted chips: 10
±1
s; 260
±5 °C
isopropyl alcohol; H
2
O
R
−
R
nom
: max.
±5%
∆R/R
max.:
±1%
no visible damage
4.17
20 (Ta)
unmounted chips completely immersed
for 2
±0.5
s in a solder bath
at 235
±2 °C
8 hours steam or 16 hours at 155
°C;
unmounted chips completely immersed
for 2
±0.5
s in a solder bath
at 235
±5 °C
200 V (RMS) during 1 minute
room temperature;
dissipation 6.25
×
P
n
;
5 s (voltage not more than 2
×
V
max
)
good tinning
(≥95% covered);
no damage
good tinning
(≥95% covered);
no damage
no breakdown or flashover
∆R/R
max.:
±1%
4.17
20 (Ta)
solderability
(after ageing)
4.7
4.13
voltage proof
on insulation
short time
overload
2003 Jul 11 Rev.12
5
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