Approval sheet
MK06S, MK08S
±
0.5%,
±
1%,
±
5%
0.5%,
5%
Thick Film Power Surge Chip Resistors
High Grade AEC Q200 Qualified
Anti-Sulfuration
Size 0603, 0805
*Contents in this sheet are subject to change without prior notice.
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ASC_MKxxS_AUTO_V02
OCT 2016
Approval sheet
FEATURE
1. Power rating and compact size
2. High reliability and stability
3. Reduced size of final equipment
4. High anti-surge protection
5. Halogen free
6. Automotive high grade AEC Q-200 qualified
7. Anti-sulfuration against ASTM B-809 60’C, 95% RH, 1000hrs
APPLICATION
•
•
•
•
Power supply
Measurement instrument
Automotive industry
Medical or Military equipment
DESCRIPTION
The resistors are constructed in a high grade ceramic body (aluminum oxide). Internal electrodes are added at
each end and connected by a resistive paste that is applied to the top surface of the substrate. The composition
of the paste is adjusted to request resistance to nominal value within tolerance which controlled by printing
process in this resistive layer.
The resistive layer is covered with a protective coat. Finally, the two external end terminations are added. For
ease of soldering the outer layer of these end terminations is a Tin (Pb free) alloy.
Fig 1. Construction of Chip-R MKxxS
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OCT 2016
Approval sheet
QUICK REFERENCE DATA
Item
Series No.
Size code
Resistance Tolerance
General Specification
MK06S
0603 (1608)
General Specification
MK08S
0805 (2012)
±0.5% ±1%,
(E24+E96)
±5%,
(E24)
±0.5% ±1%,
(E24+E96)
±5%,
(E24)
1Ω ~ 1MΩ
Resistance Range
TCR (ppm/°C)
10Ω ~ 1MΩ
1Ω ~ 9.76Ω
Max. dissipation at T
amb
=70°C
Max. Operation Voltage
Max. Overload Voltage
Operation temperature
Note :
1.
2.
1Ω ~ 1MΩ
±
100 ppm /°C
±
200 ppm /°C
1/4W
150V
300V
- 55 ~ +155’C
±
100 ppm /°C
±
200 ppm /°C
1/3W
200V
400V
- 55 ~ +155’C
This is the maximum voltage that may be continuously supplied to the resistor element, see “IEC publication
60115-8”
Max. Operation Voltage : So called RCWV (Rated Continuous Working Voltage) is determined by
RCWV
=
Rated Power
×
Resistance Value
or Max. RCWV listed above, whichever is lower.
MECHANICAL DATA(unit : mm)
101
Symbol
L
W
T
Tt
Tb
MK06S
1.60
±
0.10
0.80 +0.15/-0.05
0.45
±
0.10
0.25
±
0.10
0.30
±
0.10
MK08S
2.00
±
0.10
1.25
±
0.10
0.55
±
0.10
0.30
±
0.20
0.40
±
0.20
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ASC_MKxxS_AUTO_V02
OCT 2016
Approval sheet
MARKING
1.
For 0805, each resistor is marked with 3 digits or 4 digits on the protective coating to
designate the nominal resistance value. E24 series: 3 digits; E96 series: 4 digits. In case
E96 overlaps with E24, 3 digits should be marked.
For 0603 E24, each resistor is marked with 3 digits. No marking for E96!
Example as below
2.
3.
Single pulse limiting power chart
MK06S Surge resistor single pulse chart
1000
MK06S
Pulse power (
Ｗ
)
100
10
1
0 .0 0 1
0.01
0.1
1
10
100
1000
Duration time (msec)
De-rating curve
The power that the resistor can dissipate depends on the operating temperature; see Fig.2
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OCT 2016
Approval sheet
MOUNTING
Due to their rectangular shapes and small tolerances, Surface Mountable Resistors are suitable for handling by
automatic placement systems.
Chip placement can be on ceramic substrates and printed-circuit boards (PCBs).
Electrical connection to the circuit is by individual soldering condition.
The end terminations guarantee a reliable contact.
SOLDERING CONDITION
The robust construction of chip
resistors allows them to be completely
immersed in a solder bath of 260°C for
10 seconds. Therefore, it is possible to
mount Surface Mount Resistors on one
side of a PCB and other discrete
components on the reverse (mixed
PCBs).
Surface Mount Resistors are tested for
solderability at 235°C during 2 seconds.
The test condition for no leaching is
260°C for 30 seconds. Typical
examples of soldering processes that
provide reliable joints without any
damage are given in Fig 3.
Fig 3. Infrared soldering profile for Chip Resistors
CATALOGUE NUMBERS
The resistors have a catalogue number starting with .
MK06
Size code
MK06 : 0603
MK08: 0805
S
Type code
S
: surge
472_
Resistance code
E24 : 3 significant
digits followed by
no. of zeros and a
blank
472 = 4K7
J
Tolerance
J:
±5%
F:
±1%
D:
±0.5%
T
Packaging code
T : 7” Reeled
taping
L
Termination code
L
=
Sn base (lead
free)
Taping quantity
-
0603/0805 Chip resistors 5,000 pcs paper tape per 7” reel.
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ASC_MKxxS_AUTO_V02
OCT 2016
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