Introduction to Syfer Technology
First in the market with flexible polymer
terminations - the revolutionary FlexiCap™
capacitors - our capacitor range also includes
X8R high temperature types, Tip & Ring/Ring
Detect and other application specific types. Our
renowned high voltage MLCC expertise has
led to the development of an impressive range
with working voltage capability up to 10kV. This
includes surface mount Class ‘X’ and ‘Y’ approved
surge and safety capacitors, 0603 chips with
working voltages up to 500V, and 0805 types up
to 1kV.
As part of the Dover Ceramic Products Group
(CPG), we are able to offer unrivalled product
quality with short lead-times, backed up by
excellent sales and technical support.
With a commitment to product innovation,
new ranges are continually being developed.
Our experienced applications engineers are
also available to provide custom solutions for
specific applications. Flexibility is key, not only
in design but in all aspects of customer service
and support. Our quality management systems
meet international requirements, with approval to
IS0 9001, environmental approval to IS0 14001
and Occupational Health and Safety approval to
OHSAS 18001. Product approvals include, IECQ
CECC, UL, TÜV and qualification to AEC-Q200.
SPC is used extensively, supported by Continuous
Improvement Programmes, 6 Sigma projects and
Lean Manufacturing initiatives.
Products
Syfer’s excellence in ceramic materials
technology, has enabled us to offer an unrivalled
range of multilayer ceramic products including:
l Multilayer
ceramic chip capacitors
l
High voltage MLCCs
l
FlexiCap™ capacitors with flexible terminations
l
Class ‘X’ and ‘Y’ SMD Surge and Safety
capacitors
l
Radial leaded capacitors
l
AEC-Q200 approved capacitors
l
IECQ CECC approved capacitors and radials
l
Capacitors for space applications
Benefits
l
High quality and reliability
l
World-leading high voltage expertise
l
Suitable for the most demanding applications
including: automotive, aerospace, miltary,
space and medical
l
Approvals to international specifications
l
Continual product improvement and innovation
l
Tight tolerances available
l
Large case sizes, up to 8060
l
Custom product capability
l
Strong technical support
l
Short lead-times
l
Environmentally responsible
Other Syfer products
l
3 terminal EMI chips
l
Surface mount Pi filters
l
X2Y Integrated Passive Components
l
Panel mount threaded filters
l
Panel mount solder-in filters
l
Custom filter assembly capability
l
Varistor filters
l
Discoidal capacitors
l
Planar capacitor and planar varistor arrays
l
Low Temperature Co-fired Ceramic (LTCC)
filters
l
EMI Power Filters
l
Hermetically sealed EMI filters
syfer.com
2
Contents
Syfer -
Innovative, World-Class
Ceramic Capacitors
General introduction
- Definitions of Ultra-Stable and Stable
- Dielectric characteristics
- Capacitance, Impedance and E.S.R. vs Frequency
- Ageing of ceramic capacitors
- Capacitance measurements
- Production processes and reliability
- FlexiCap™ overview
- Testing and termination types
- Release documentation, Periodic tests, REACH statement and
RoHS compliance
- IECQ-CECC and AEC-Q200 periodic tests
- Soldering and handling notes
- Dimensions
Ceramic Chip capacitors
- Standard range - 10V to 250Vdc
- High Voltage range - 500V to 6kV
- IECQ-CECC and MIL grade ranges
- AEC-Q200 Rev C ranges
- S02A and S05 Space grade ranges
-
Surge Protection and Safety capacitors
- Certification chart
- Ordering information
- Open Mode capacitors
- Tandem capacitors
- X8R High Temperature chip
- LCD Inverter chip range
- Specialist applications
- Packaging information - Ceramic Chip capacitors
Radial Leaded capacitors
- Radial Leaded capacitors
- Packaging information - Radial Leaded capacitors
4
5
6
7
7
8
9
10
11
12
13-14
15
16
17
18
19
20
21
22
23
24
25
26
27
28-29
30-31
32-33
34-35
3
Definitions of Ultra-Stable and Stable
Technical Summary
Multilayer Ceramic Capacitors are generally divided into
classes which are defined by the capacitance temperature
characteristics over specified temperature ranges.
These are designated by alpha numeric codes.
Code definitions are summarised below and are also available
in the relevant national and international specifications.
1. C0G/NP0
-
Ultra Stable Class 1 Ceramic (EIA Class 1)
Spec.
CECC
EIA
MIL
Classification
1B/CG
C0G/NP0
CG (BP)
Temperature
range °C
-55 +125
-55 +125
-55 +125
Maximum
capacitance change
0 ± 30ppm/°C
0 ± 30ppm/°C
0 ± 30ppm/°C
Syfer
dielectric code
C
C
C
Capacitors within this class have a dielectric constant
range from 10 to 100. They are used in applications which
require ultra stable dielectric characteristics with negligible
dependence of capacitance and dissipation factor with
time, voltage and frequency. They exhibit the following
characteristics:-
a) Time does not significantly affect capacitance and
dissipation factor (Tan
δ)
– no ageing.
b) Capacitance and dissipation factor are not affected by
voltage.
c) Linear temperature coefficient.
2. X8R, X7R and X5R
- Stable Class II Ceramic (EIA Class II)
Temperature
range °C
-55 +125
-55 +125
-55 +125
-55 +150
-55 +125
-55 +85
-55 +125
-55 +125
Spec.
Classification
Maximum capacitance change %
over temperature range
No DC volt
applied
±20
±15
±15
±15
±15
±15
±15
±20
Rated DC Volt
+20 -30
-
-
+15 -25
-
-
-
-
-
-
Syfer
dielectric
code
R
X
B
N
X
P
B
R
CECC
2C1
2R1
2X1
X8R
X7R
X5R
BX
BZ
EIA
MIL
+15 -25
+20 -30
Capacitors of this type have a dielectric constant range
of 1000-4000, and also have a non-linear temperature
characteristic which exhibits a dielectric constant variation
of less than ±15% (2R1) from its room temperature value,
over the specified temperature range. Generally used for
by-passing (decoupling), coupling, filtering, frequency
3. Technical Summary
C0G/NP0
Dielectric
characteristics
IECQ-
CECC
EIA
MIL
Rated temperature
range
Maximum capacitance
change over
temperature range
No DC voltage applied
Rated DC voltage applied
Syfer dielectric
ordering code
C
Cr > 50pF ≤ 0.0015
Cr ≤ 50pF = 0.0015 (15 + 0.7)
Cr
discrimination, DC blocking and voltage transient suppression
with greater volumetric efficiency than Class l units, whilst
maintaining stability within defined limits.
Capacitance and dissipation factor are affected by:-
Time
(Ageing)
Voltage
(AC or DC)
Frequency
X8R
Stable
-
-
-
X8R
-
-55ºC to +150ºC
2C1
-
BZ
X7R
Stable
2R1
X7R
-
-55ºC to +125ºC
2X1
-
BX
X5R
Stable
-
X5R
-
-55ºC to +85ºC
Ultra stable
1B/CG
-
-
-
C0G/
NP0
-
CG (BP)
-55ºC to +125ºC
0 ± 30 ppm/ºC
± 15%
-
N
± 20%
+20
-30%
± 15%
-
X
± 15%
+15
-25%
± 15%
-
P
R
B
4
Tangent of loss angle
(tan δ)
≤ 0.025
≤ 0.025
≤ 0.025
The table above highlights the difference in coding for IECQ-CECC, EIA
and MIL standards when defining the temperature coeffiecient and the
voltage coefficient.
Technical Summary
Dielectric characteristics
C0G/NP0
Insulation
resistance (Ri)
Time constant (Ri x
Cr) (whichever is the
least)
Capacitance
tolerance
Cr < 10pF
100G
Ω
or
1000s
± 0.05pF (H)
± 0.10pF (B)
± 0.25pF (C)
± 0.50pF (D)
± 1.0pF (F)
± 1% (F)
± 2% (G)
± 5% (J)
± 10% (K)
X8R
100G
Ω
or
1000s
± 5% (J)
± 10% (K)
± 20% (M)
X7R
100G
Ω
or
1000s
± 5% (J)
± 10% (K)
± 20% (M)
X5R
100G
Ω
or
1000s
± 5% (J)
± 10% (K)
± 20% (M)
Cr 10pF
Dielectric strength
16-200V
>200V 500V
500V/630V
>1kV
4-6kV
Climatic
category (IEC)
Chip
Dipped
Discoidal
Ageing
characteristic
(Typical)
Approvals
Chip
Dipped radial
QC-32100
IECQ-CECC 30601-008
55/125/56
55/125/21
55/125/56
Zero
2.5 times
Rated voltage + 250V
1.5 times
1.5 times
1.2 times
Voltage applied for 5 seconds.
Charging current limited to 50 mA maximum.
2.5 times
2.5 times
Rated voltage + 250V
1.5 times
1.25 times
1.2 times
2.5 times
55/150/56
-
-
1% per time decade
55/125/56
55/125/21
55/125/56
1% per time decade
55/85/56
-
-
1% per time decade
-
-
QC-32100
IECQ-CECC 30701-013
-
-
Typical dielectric temperature characteristics
C0G/NP0 capacitance vs temperature
50
UPPER LIMIT
X7R capacitance vs temperature
20
% Capacitance Change
25
∆C
ppm/°C
TYPICAL LIMIT
10
UPPER LIMIT
TYPICAL
LIMIT
0
0
-25
LOWER LIMIT
-10
LOWER LIMIT
-50
-20
-55
-25
0
25
50
75
100
125
-55
-30
-5
20
45
70
95
120
Temperature (°C)
Temperature (°C)
Power ratings for C0G/NP0 and X7R
Power (mW)
5
Operating Temperature (°C)
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