LOW-OHMIC POWER CHIP RESISTORS
DATA SHEET
LRC12
1%
size 0805
Product Specification - May 14, 2003 V.3
Phycomp
Product specification
Low-ohmic power chip resistors
size 0805
FEATURES
•
Reduced size of final equipment
•
Low assembly costs
•
Higher component and equipment
reliability
•
Low inductance design for
sensing applications.
APPLICATIONS
•
Television
•
Tape recorders
•
Telecommunication equipment
•
Notebook 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 value. Finally, the two
external end terminations are added.
To guarantee optimum solderability
the outer layer consists of a lead-tin
alloy.
QUICK REFERENCE DATA
DESCRIPTION
Resistance range
Resistance tolerance and series
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 dissipation at T
amb
= 70
°C
Maximum permissible voltage
Climatic category (IEC 60068)
Basic specification
Stability after:
load (1000 hours)
climatic test
soldering
short time overload
LRC12
1%
VALUE
0.01
Ω
to 0.99
Ω;
E24 series
±1
%
≤±1500 ×
10
−6
/K
≤±1000×
10
−6
/K
≤±800×
10
−6
/K
≤±600×
10
−6
/K
≤±300×
10
−6
/K
≤±200 ×
10
−6
/K
0.125 W
150 V (DC or RMS)
55/125/56
IEC 60115-8
∆R/R
max.:
±3.0%
∆R/R
max.:
±3.0%
∆R/R
max.:
±1.0%
∆R/R
max.:
±1.0%
2003 May 14 Rev.3
2
www.yageo.com
Phycomp
Product specification
Low-ohmic power chip resistors
size 0805
ORDERING INFORMATION
Table 1
Ordering code indicating resistor type and packing
LRC12
1%
ORDERING CODE 2350 511 …..
TYPE
TOL.
(%)
±1
RESISTANCE VALUE
(Ω)
0.01 to 0.99
Table 2
SERIES
PAPER TAPE ON REEL
5 000 units
LRC12
E24
12...
O
RDERING EXAMPLE
The ordering code of an LRC12 low-
ohmic resistor, 0.1 W, value 220 mΩ
with 1% tolerance, supplied on paper
tape of 5000 units per reel is:
2350 511 12227.
Ordering code (12NC)
•
The resistors have a 12-digit
ordering code starting with
2350 511.
•
The subsequent two digits
indicate the resistor type and
packing; 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.
Last digit of 12NC
LAST DIGIT
0
7
RESISTANCE
DECADE
0.01 to 0.099
Ω
0.10 to 0.99
Ω
2003 May 14 Rev.3
3
www.yageo.com
Phycomp
Product specification
Low-ohmic power chip resistors
size 0805
FUNCTIONAL DESCRIPTION
Product characterization
Standard values of nominal
resistance are taken from all the
series for resistors with a tolerance
of
±1%.
The values of all the series
are in accordance with
“IEC publication 60063”.
Limiting values
TYPE
LIMITING LIMITING
VOLTAGE
(1)
POWER
(W)
(V)
150
0.125
50
LRC12
1%
D
ERATING
The power that the resistor can dissipate depends on the operating
temperature; see Fig.1.
P
max
(%P
rated
)
100
CCB413
LRC12
Note
0
−55
0
50
70
100 125
T
amb
(°C)
1. 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
).
2003 May 14 Rev.3
4
www.yageo.com
Phycomp
Product specification
Low-ohmic power chip resistors
size 0805
MECHANICAL DATA
Mass per 100 units
TYPE
LRC12
Marking
MASS
(g)
Outlines
LRC12
1%
protective coat
0.55
resistor layer
inner electrode
Each resistor is marked with the
nominal resistance value.
4-
DIGIT MARKING
The R is used as a decimal point,
the other 3 digits are significant.
Example
MARKING
R100
P
ACKAGE MARKING
The packing is also marked and
includes resistance value, tolerance,
catalogue number, quantity,
production period, batch number and
source code.
RESISTANCE
0.100
Ω
T
end termination
ceramic substrate
t
b
protective coat
t
t
marking
W
R100
CCB525
L
For dimensions see Table 3.
Fig.2
Outlines.
Table 3
TYPE
LRC12
Chip resistor type and relevant physical dimensions; see Fig.2
L
(mm)
2.0
±0.10
W
(mm)
1.25
±0.10
T
(mm)
t
t
(mm)
t
b
(mm)
0.35
±0.20
0.50
±0.10
0.35
±0.20
2003 May 14 Rev.3
5
www.yageo.com
京公网安备 11010802033920号
EEWORLD
