DATA SH EET
Product specification
Supersedes data of 27th April 2001 2001 May 28 Rev.4
DISCRETE CERAMICS
SRC01
5%
Surge chip resistors
size 1206
www.phycomp-components.com
2001 May 28 Rev.4 2 www.phycomp-components.com
Phycomp Product specification
Surge chip resistors
size 1206 SRC01
5%
FEATURES
•Reduced size of final equipment
•Low assembly costs
•Higher component and equipment
reliability
•Excellent performance at high
frequency.
APPLICATIONS
•Power supply in small sized
equipment
•Telecommunication
•Medical and Military
•Automotive industry.
DESCRIPTION
The resistors are constructed on a
high grade ceramic body (aluminium
oxide). Internal metal electrodes are
added at each end and co nnected 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 resi stive layer.
The resistive layer is covered with a
protective coating and printed with the
resistance value. Finally, the two
external end ter minations are added.
For ease of soldering the outer
layer of these end terminations is a
lead/tin alloy.
QUI CK REFERENCE DATA
ORDERING INFORMATION
Table 1 Ordering code indic ati ng re si s tor type and packing
DESCRIPTION VALUE
Resistance range 1 Ω to 100 kΩ
Resistance tolerance ±5% E24 series
Temperature coefficient ≤±200 ×10−6/K
Absolute maximum dissipation at
Tamb =70°C0.25 W
Maximum permissible voltage 200 V (DC or RMS)
Climatic ca t egory (I EC 60068) 55/1 55/56
Basic specification IEC 60115-8
TYPE RESISTANCE
RANGE TOL.
(%)
ORDERING CODE 2350 550 .....
PAPER TAPE ON REEL
5000 units
SRC01 1 Ω to 100 kΩ5 10 ...
Ordering code (12NC)
•The resistors have a 12-digit
orde ring code star ting with
2350 550.
•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
resistanc e value.
– Th e last digit indicat es the
resistance decade in
accordance with Table 2.
Table 2 Last digit of 12 NC
ORDERING EXAMPLE
The ordering code of a SRC01
resistor , value 750 Ω with a tol erance
of 5%, supplied on paper tape of
5000 units per reel is:
2350 550 10751.
RESISTANCE LAST DIGIT
1to9.76Ω8
10 to 97.6 Ω9
100 to 976 Ω1
1to9.76kΩ2
10 to 97.6 kΩ3
100 kΩ4
2001 May 28 Rev.4 3 www.phycomp-components.com
Phycomp Product specification
Surge chip resistors
size 1206 SRC01
5%
FUNCTIONAL DESCRIPTION
Product characterization
Standard values of nominal
resistance are taken from the E24
seri es for resi stors with a tolerance of
±5%. The values of the E24 series are
in accordance with
“IEC publication 60063”.
Limiting va lues
Note
1. This is the maximum v oltage th at
may be continuously applied to
the resistor element, see
“IEC publication 60115-8”.
TYPE LIMITING
VOLTAGE(1)
(V)
LIMITING
POWER
(W)
SRC01 200 0.25
DERATING
The power that the resistor can dissipate depends on the operating
temp erature; see Fig.1.
handbook, 4 columns
70 10050
00
50
100
155
CCB412
−55 Tamb (°C)
Pmax
(%Prated)
Fig.1 Maximum dissipation (Pmax) in percentage of rated power
as a function of the ambient temperature (Tamb).
PULSE LOADING CAPABILITIES
Fig.2 Pulse on a regular basis; maximum permissi ble peak pulse power as
a function of pulse duration for R = 1 Ω, single pulse. P
ˆmax
()
handbook, full pagewidth
1.00 0.2 0.4 0.6 0.8
102
0
10
CCB547
1
SRC01
RC01
Pmax
(W)
t (s)
2001 May 28 Rev.4 4 www.phycomp-components.com
Phycomp Product specification
Surge chip resistors
size 1206 SRC01
5%
MECHANICAL DATA
Mass per 100 units
Marking
All res istors are mar ked wi th a 3-digi t
code on the protective coat to
designate the nominal resistance
value.
3-DIGIT MARKING
For values up to 1 kΩ the R is used as
a decimal point. For values of 1 kΩ or
greater the first 2 digits apply to the
resistance value and the third
indicates the number of zeros to
follow.
Example
PACKAGE MARKING
The packing is also marked and
includes resistance value, tolerance,
catalogue number, quantity,
producti on pe riod, batch numbe r and
source code.
TYPE MASS
(g)
SRC01 1.0
MARKING RESISTANCE
10R 10 Ω
102 1 kΩ
104 100 kΩ
Outlines
Table 3 Chip resistor type and relevant physical dimensions; see Fig.3
TYPE L
(mm) W
(mm) T
(mm) tt
(mm) tb
(mm)
SRC01 3.20
+0.10/−0.20 1.60 ±0.15 0.55 ±0.10 0.45 ±0.25 0.50 ±0.25
Fig.3 Outlines.
For dimensions see Table 3.
tb
tt
T
inner electrode
end termination
protective coat
CCB545
101
marking
W
L
protective coat
resistor layer
ceramic substrate
2001 May 28 Rev.4 5 www.phycomp-components.com
Phycomp Product specification
Surge chip resistors
size 1206 SRC01
5%
TESTS AND REQUIREM ENTS
Essent iall y all tes ts are ca rri ed out in acc orda nce with the
schedule of “IEC publication 60115-8”, category
55/155/56 (rated temperatur e range −55 to +155 °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 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:
Temperatur e: 15 °Cto35°C
Relative humidity: 45% to 75%
Air pressure: 86 kPa to 106 kPa.
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 re commendatio ns were nece ssary for our m ethod
of speci fy i n g.
All solder ing tes ts are per formed with mil dly acti vated fl ux.
Table 4 Test procedures and requirements
IEC
60115-8
CLAUSE
IEC
60068-2
TEST
METHOD
TEST PROCEDURE REQUIREMENTS
Tests in accordance with the schedule of IEC publication 60115-8
4.4.1 visual examination no holes; clean surface;
no visible dam age
4.5 resistance applied voltage (+0/−10%): 0.1 V R −Rnom:max. ±5%
4.18 20 (Tb) resistance to
soldering heat unmounted chips; 10 ±1 s; 260 ±5°C no visible damage
∆R/R max.: ±(1% +0.05 Ω)
4.29 45 (Xa) component solvent
resistance isopropyl alcohol; H2O no visible damage
4.17 20 (Ta) solderability unmounted chips completely immersed
for 2 ±0.5 s in a s older bath at 23 5 ±2°Cgood tinning (≥95% covered) ;
no damage
4.17 20 (Ta) solderability
(after ageing) 8 hours steam or 16 hours at 155 °C;
unmounted chips completely immersed
for 2 ±0.5 s in a s older bath at 23 5 ±2°C
good tinning (≥95% covere d) ;
no damage
4.7 voltage proof on
insulation 200 V (RMS) during 1 minute no breakdown or flashover
4.13 short time ov erload room temper ature;
dissipation 6.25 ×Pn;
5 s (voltage not more than 2 ×Vmax)
∆R/R max.: ±(2% +0.1 Ω)
4.33 (JIS)
C 5200 bending resistors mounted on a 90 mm glass
epoxy resin printed-circuit board;
bending: 5 mm
no visible dam age
∆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 cycle s no visible dam age
∆R/R max.: ±(1.5% +0.05 Ω)
4.6.1.1 insulation
resistance 100 V (DC) af ter 1 minute Rins min.: 1000 MΩ
4.24.2 3 (Ca) damp heat (steady
state) 56 days; 40 ±2°C; 93 +2/−3% RH;
loaded with 0.01 Pn Rins min.: 1000 MΩ
∆R/R max.: ±(1.5% +0.05 Ω)
2001 May 28 Rev.4 6 www.phycomp-components.com
Phycomp Product specification
Surge chip resistors
size 1206 SRC01
5%
4.25.1 endurance 1000 +48/−0 hours; 70 ±2°C;
loaded with Pn or Vmax;
1.5 hours on and 0.5 hours off
∆R/R max.: ±(1% +0.05 Ω)
4.23.2 27 (Ba) endurance at
upper category
temperature
1000 +48/−0 hours; 155 °C; no load no visible damage
∆R/R max.: ±(1% +0.05 Ω)
4.8.4.2 temperature
coefficient at 20/LCT/20 °C and 20/UCT/20 °C≤±200 ×10−6/K
Other applicable tests
leaching unmounted chips 60 ±1 s; 260 ±5°C good tinning; no leaching
(JIS) C
5202 7.5 resis t ance to
damp heat (ste ady
state)
1000 +48/−0 hours; 40 ±2°C;
93 +2/−3% RH; loaded with Pn or Vmax;
1.5 hours on and 0.5 hours off
∆R/R max.: ±3%
IEC
60115-8
CLAUSE
IEC
60068-2
TEST
METHOD
TEST PROCEDURE REQUIREMENTS
2001 May 28 Rev.4 7 www.phycomp-components.com
Phycomp Product specification
Surge chip resistors
size 1206 SRC01
5%
REVISION HISTORY
Revision Date Change
Notification Description
Rev.3 2001 Apr 27 –- Converted to Phycomp brand
Rev.4 2001 May 28 - 2% range discontinued
