DATA SHEE
T
TRIMMABLE CHIP RESISTORS
RC02TR/12TR
sizes 1206 and 0805
Product Specification –May 20, 2003 V.9
Phycomp Product specification
Trimmable chip resistors
sizes 1206 and 0805 RC02TR/12TR
2003 May 20 Rev.9 2 www.yageo.com
FEATURES
• Reduced size of final equipment
• Low assembly costs
• Specific electrical requirements
(such as HF characteristics).
APPLICATIONS
This trimmable chip-resistor is
suitable for the whole electronic
industry and can replace trimmer
resistors in several applications.
DESCRIPTION
The resistors are constructed on a
high grade ceramic body (aluminium
oxide). Internal metal electrodes are
added at each end and a connection
is made between them using a
resistive metal glaze; the
approximate resist or values ar e
dependent on the composition of the
glaze.
The resistive layer is covered with a
translucent protective coat. Finally,
two end electrodes are added, the
composition of which has been
designed to provide ease of
soldering.
QUICK REFERENCE DATA
VALUE
DESCRIPTION RC02TR RC12TR
Resistance range 1 Ω to 10 MΩ; E24 series
Resistance tolerance 0/−20% and 0/−30%
Temperature coefficient
1 Ω ≤ R < 10 Ω ≤250 ±250 × 10−6/K
10 Ω ≤ R ≤ 1 MΩ ≤±100 × 10−6/K
1 MΩ < R ≤±200 × 10−6/K
Absolute maximum dissipation at
Tamb = 70 °C 0.25 W 0.125 W
Maximum permissible voltage 200 V (RMS) 150 V (RMS)
Climatic category (IEC 60068) 55/155/56
Basic specification IEC 60115-8
ORDERING INFORMATION
Ordering code (12NC)
Table 1 Ordering code indicating resistor type and packing
ORDERING CODE 2350 50. 1….
RC02TR RC12TR
PAPER TAPE ON REEL
TYPE TOL.
(%)
5 000 units 5 000 units
+0/−20 500 11… 501 11…
RC02TR/RC12TR +0/−30 500 10… 501 10…
Phycomp Product specification
Trimmable chip resistors
sizes 1206 and 0805 RC02TR/12TR
2003 May 20 Rev.9 3 www.yageo.com
FUNCTIONAL DESCRI PTI ON
Product characterization
Standard values of nominal
resistance are taken from the E24
series for resistors with a tolerance
of 0/−20% and 0/−30%.
Limiting values
TYPE LIMITING
VOLTAGE(1)
(V)
LIMITING
POWER
(W)
RC02TR 200 0.25
RC12TR 150 0.125
Note
1. This is the maximum voltage that
may be continuously applied to
the resistor element, see
“IEC publication 60115-8”.
DERATING
The power that the resistor can dissipate depends on the operating
temperature; see Fig.1.
70 10050
00
50
100
155
CCB412
−55 T
amb
(°C)
P
max
(%P
rated
)
Fig.1 Maximum dissipation (Pmax) in percentage of rated power as a
function of the ambient temperature (Tamb).
Application information
TRIMMING INSTRUCTIONS WITH YAG-LASER
Typical values for:
Cutting speed = 10 to 300 mm/s
Laser power = 1 to 6 W
Maximum trimming length = 60% of resistor film width
Minimum distance between end termination and trimming cut = 0.50 mm.
PROTECTION OF LASER CUT
With epoxy-phenol lacquers, epoxy resins or silicon alkyd-resins.
This is necessary for humidity tests and stability at load.
Phycomp Product specification
Trimmable chip resistors
sizes 1206 and 0805 RC02TR/12TR
2003 May 20 Rev.9 4 www.yageo.com
MECHANICAL DATA
Mass per 100 units
TYPE MASS
(g)
RC02TR 1
RC12TR 0.55
Marking
The resistor is not marked. The
packing is marked and includes
resistance value, tolerance,
catalogue number, quantity,
production period, batch number and
source code.
tt
tb
T
W
L
protective coat
resistor layer
inner electrode
end termination
ceramic substrate
protective coat
MBA564 - 2
Outlines
Table 2 Chip resistor type and relevant physical dimensions; see Fig.2
TYPE L
(mm) W
(mm) T
(mm) tt
(mm) tb
(mm)
RC02TR 3.20
+0.10/−0.20 1.60 ±0.15 0.55 ±0.10 0.45 ±0.25 0.50 ±0.25
RC12TR 3.20 ±0.15 1.25 ±0.15 0.55 ±0.10 0.45 ±0.20 0.50 ±0.20
Fig.2 Outlines.
For dimensions see Table 2.
Phycomp Product specification
Trimmable chip resistors
sizes 1206 and 0805 RC02TR/12TR
2003 May 20 Rev.9 5 www.yageo.com
TEST AND REQUIREMENTS
Essentially all tests are carried out in
accordance with the schedule of
“IEC publication 60115-8”, category
55/155/56 (rated temperature range
−55 to +155 °C; damp heat, lon g
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
climatic and mechanical robustness
testing procedure for electronic
components” and under standard
atmospheric conditions in
accordance with “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
(860 mbar to 1060 mbar).
Table 3 Test procedures and requirements
IEC
60115-8
CLAUSE
IEC
60068-2
TEST
METHOD
TEST PROCEDURE REQUIREMENTS
4.17 20 (Ta) solderability unmounted chips completely
immersed for 2 ±0.5 s in a solder bath
at 235 ±2 °C
good tinning (≥95% covered);
no visible damage
4.18 20 (Tb) resistance to
soldering heat 10 ±1 s; 260 ±5 °C ∆R/R max.: ±(0.5% + 0.05 Ω)
4.19 14 (Na) rapid change of
temperature 30 minutes at LCT and
30 minutes at UCT; 5 cycles ∆R/R max.: ±(0.5% + 0.05 Ω)
bending resistors mounted on a 90 mm glass
epoxy resin PCB (FR4), bending:
3 mm for RC02TR, 5 mm for RC12TR
no visible damage
∆R/R max.: ±(0.5% + 0.05 Ω)
56 days; 40 ±2 °C; 93 +2/−3% RH;
loaded with 0.01 Pn
R ≤ 1 MΩ ∆R/R max.: ±(1.0% + 0.05 Ω)
4.24.2 3 (Ca) damp heat
(steady state)
R > 1 MΩ ∆R/R max.: ±(1.5% + 0.05 Ω)
1000 hours +48/−0 hours; 70 ±2 °C;
nominal dissipation;
1.5 hours on and 0.5 hours off
R ≤ 1 MΩ ∆R/R max.: ±(1% + 0.05 Ω)
4.25.1 endurance
R > 1 MΩ ∆R/R max.: ±(1.5% + 0.05 Ω)
4.6.1.1 insulation
resistance 100 V (DC) after 1 minute,
metal block method Rins min.: 103 MΩ
4.13 short time
overload room temperature; P = 6.25 × Pn;
5 s (V ≤ 2 × Vmax for RC02TR,
V ≤ 200 V for RC12TR)
∆R/R max.: ±(1% + 0.05 Ω)
In Table 3 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 activat ed flux.
Phycomp Product specification
Trimmable chip resistors
sizes 1206 and 0805 RC02TR/12TR
2003 May 20 Rev.9 6 www.yageo.com
IEC
60115-8
CLAUSE
IEC
60068-2
TEST
METHOD
TEST PROCEDURE REQUIREMENTS
at 20/LCT/20 °C and 20/UCT/20 °C:
1 Ω ≤ R < 10 Ω ≤250 ±250 × 10−6/K
10 Ω ≤ R ≤ 1 MΩ ≤±100 × 10−6/K
4.8.4.2 temperature
coefficient
1 MΩ < R ≤±200 × 10−6/K
IEC publication 60195
(measured with Quantech-equipment)
R ≤ 100 Ω max. 0.316 µV/V (−10 dB)
R ≤ 1 kΩ max. 1 µV/V (0 dB)
R ≤ 10 kΩ max. 3
µV/V (9.54 dB)
R ≤ 100 kΩ max. 6
µV/V (15.56 dB)
R ≤ 1 MΩ max. 10 µV/V (20 dB)
4.12 noise
R ≤ 10 MΩ max. 32
µV/V (30.10 dB)
1000 +48/−0 hours; no load
R ≤ 1 MΩ ∆R/R max.: ±(1% + 0.05 Ω)
4.23.2 27 (Ba) endurance at
upper category
temperature R > 1 MΩ ∆R/R max.: ±(1.5% + 0.05 Ω)
4.7 voltage proof
on insulation 200 V (RMS) during 1 minute no breakdown
Phycomp Product specification
Trimmable chip resistors
sizes 1206 and 0805 RC02TR/12TR
2003 May 20 Rev.9 7 www.yageo.com
REVISION HISTORY
Revision Date Change
Notification Description
Rev.8 2001 Apr 27 − - Converted to Phycomp brand
Rev.9 2003 May 20 − - Updated company logo
