MLCC
Safety Certified MLCC Capacitors
Safety Certified capacitors
Knowles Safety Certified capacitors comply with
international UL and TÜV specifications to offer
designers the option of using a surface mount ceramic
multilayer capacitor to replace leaded film types.
Offering the benefits of simple pick-and-place
assembly, reduced board space required and lower
profile, they are also available in a FlexiCap™ version to
reduce the risk of mechanical cracking.
Knowles high voltage capacitor expertise means the
range offers among the highest range available of
capacitance values in certain case sizes. Applications
include: modems, AC-DC power supplies and where
lightning strike or other voltage transients represent a
threat to electronic equipment.
Electrical Details
Capacitance Range
4.7pF to 22nF
Temperature Coefficient of
Capacitance (TCC)
C0G/NP0 0 ± 30ppm/˚C
X7R
±15% from -55˚C to +125˚C
Dissipation Factor
Cr > 50pF ≤0.0015
C0G/NP0
Cr ≤ 50pF = 0.0015(15÷Cr+0.7)
X7R
≤ 0.025
Insulation Resistance (IR)
100GΩ or 1000secs (whichever is the less)
Dielectric Withstand Voltage (DWV)
Voltage applied for 5 ±1 seconds*, 50mA
charging current maximum
* - 60s for approval and AQL test
Ageing Rate
C0G/NP0 Zero
X7R
<2% per time decade
• Surface mount multilayer capacitors
• Meet Class Y2/X1, X1 and X2 requirements
• Approved for mains ac voltages up to 250Vac
• Approved by UL and TÜV
• Sizes 1808, 1812, 2211, 2215 and 2220
• Smaller sizes suitable for use in equipment certified to
EN60950
• Range qualified to AEC-Q200
• Certification specifications for larger sizes include IEC/
EN60384-14, UL/CSA60950 and UL60384-14
• Surface mount package
• Reduces board area and height restrictions
• Reduced assembly costs over conventional through hole
components
• FlexiCap™ option available on all sizes
Class
Rated voltage
Impulse voltage
Insulation bridging
Y1
250Vac
Y2
250Vac
Y4
150Vac
X1
250Vac
X2
250Vac
X3
250Vac
8000V
5000V
2500V
4000V
2500V
None
Double or reinforced
Basic or supplementary*
Basic or supplementary*
-
-
-
Available for case sizes greater than 1812
* 2 x Y2 or Y4 rated may bridge double or reinforced insulation when used in series.
May be used in primary
circuit
Line to protective earth
Line to protective earth
Line to protective earth
Line to line
Line to line
Line to line
Dimensions
Size
1808
1812
2211
2215
2220 B16 /
U16
2220 B17 /
U17
Length
(L1)
4.5 ± 0.35
4.5 ± 0.30
5.7 ± 0.40
5.7 ± 0.40
5.7 ± 0.40
5.7 ± 0.40
Width
(W)
2.0 ± 0.3
Max
Thickness
(T)
2.0
Band
(L2)
0.50 – 0.80
3.2 ± 0.2
3.2
0.50 – 0.80
2.79 ± 0.3
2.54
0.50 – 0.80
3.81 ± 0.35
2.54
0.50 – 0.80
5.0 ± 0.4
4.5
0.25 – 1.0
5.0 ± 0.4
2.5
0.25 -1.0
© Knowles 2014
SafetyDatasheet Issue 11 Release Date 07/12/18
Tel: +44 1603 723300 | Email SyferSales@knowles.com | www.knowlescapacitors.com/syfer
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