ESR
Ultra-low ESR “U” Range
“U” range of Ultra-low ESR Capacitors
Electrical Details
Capacitance Range
0.1pF to 1.0nF
Temperature Coefficient of Capacitance (TCC) 0 ± 30ppm/˚C (C0G)
Q factor
Insulation Resistance (IR)
Dielectric Withstand Voltage (DWV)
Operating temperature range
Ageing Rate
>2000 @ 1MHz
100GΩ or 1000secs (whichever is the less)
Voltage applied for 5 ±1 seconds, 50mA
charging current maximum
-55ºC / +125ºC
Zero
The Ultra-low ESR “U” range offers a very stable, High Q material system
that provides excellent low loss performance in systems below 3GHz.
Optimised for lowest possible ESR, this range of high frequency capacitors
is suitable for many applications where economical, high performance is
required.
Size
Length mm
(L1)
1.6 ± 0.2
Width mm
(W)
0.8 ± 0.2
Thickness mm
(T)
0.8 Max
Band mm
(L2)
0.10 – 0.40
0603
0805
2.0 ± 0.3
1.25 ± 0.2
1.3 Max
0.13 – 0.75
1111
2.79 +0.51/-0.25
2.79 ± 0.38
2.0±0.2*
0.13
– 0.63
* - 1111 capacitance values < 2.2pF, maximum thickness 1.78mm
Ordering Information – Ultra-low ESR “U” Range
0805
Chip Size
0603
0805
1111
J
Termination
J
= Silver or copper
base with nickel
barrier (100% matte
tin plating).
RoHS compliant
A
= Silver or copper
base with nickel
barrier (tin/lead
plating with min. 10%
lead).
Not RoHS compliant
250
Voltage d.c.
(marking code)
200 = 200V
250 = 250V
300 = 300V
500 = 500V
630 = 630V
1K0 = 1000V
1K5 = 1500V
2K0 = 2000V
0101
Capacitance in Pico
farads (pF)
<1.0pF
Insert a P for the decimal
point as the first character.
e.g.,
P300
= 0.3pF
Values in 0.1pF steps
≥1.0pF & <10pF
Insert a P for the decimal
point as the second
character.
e.g.,
8P20
= 8.2pF
Values are E24 series
≥10pF
First digit is 0.
Second and third digits are
significant figures of
capacitance code.
The fourth digit is the
number of zeros following.
e.g.,
0101
= 100 pF
Values are E24 series
≥10pF
F:
± 1%
G:
± 2%
J:
± 5%
K:
± 10%
J
Capacitance
Tolerance
<10pF
H:
± 0.05pF
B:
± 0.10pF
C:
± 0.25pF
D:
± 0.5pF
U
Dielectric
U =
Ultra-low ESR
“U” range
T
Packaging
T
= 178mm
(7”) reel
R
= 330mm
(13”) reel
B
= Bulk pack
– tubs or trays
Europe:
Knowles Precision Devices
Sales contact e-mail
Asia:
USA:
KPD-Europe-sales@knowles.com
KPD-Asia-sales@knowles.com
KPD-NA-sales@knowles.com
© Knowles 2015
www.knowlescapacitors.com
UESRDatasheet Issue 10 Release Date 11/09/18
Page 1 of 13
Minimum/Maximum Capacitance Values – “U” range of Ultra-low ESR Capacitors
Note: Knowles Precision Devices operate a continuous improvement process with ranges being expanded and updated regularly. The latest range
may differ and is shown on the KPD website – www.knowlescapacitors.com
Chip Size
Min Cap
200V/250V
300V
500V
630V
1000V
1500V
2000V
Tape Quantities
0603
0.1pF
100pF
0805
0.2pF
240pF
1111
0.4pF
1.0nF
680pF
470pF
390pF
220pF
100pF
68pF
7” reel – 4,000
13” reel – 16,000
7” reel – 3,000
13” reel – 12,000
7” reel – 1,000
13” reel – 5,000
•
•
•
•
Below 1pF capacitance values are available in 0.1pF steps.
Above 1pF capacitance values are available in E24 series values.
Other values and taping quantities may be available on request, consult Sales Office for details.
For values < 0.3pF please consult the Sales Office for availability.
Detailed individual datasheets and part specific environmental certificates can be downloaded direct from the KPD website –
www.knowlescapacitors.com
© Knowles 2015
www.knowlescapacitors.com
UESRDatasheet Issue 10 Release Date 11/09/18
Page 2 of 13
Typical Performance Curves
0603
The 0603 “U” range has been modelled by Modelithics Inc. (www.modelithics.com) and scaleable models are available as part of
their model libraries for Keysight ADS, Keysight GENESYS, and AWR Microwave Office EDA software.
S parameters for the 0603 are available on both the Modelithics (www.modelithics.com) and Knowles Capacitors website
www.knowlescapacitors.com/syfer
© Knowles 2015
www.knowlescapacitors.com
UESRDatasheet Issue 10 Release Date 11/09/18
Page 3 of 13
0805
Note curves are typical, based on data measured using a Boonton 34A resonant tube and Keysight E4991 impedance analyser
with Keysight 16197A test fixture
Actual performance in circuit may differ and parts should be tested in application.
© Knowles 2015
www.knowlescapacitors.com
UESRDatasheet Issue 10 Release Date 11/09/18
Page 4 of 13
1111
Note curves are typical, based on data measured using a Boonton 34A resonant tube and Keysight E4991 impedance analyser
with Keysight 16197A test fixture
Actual performance in circuit may differ and parts should be tested in application.
© Knowles 2015
www.knowlescapacitors.com
UESRDatasheet Issue 10 Release Date 11/09/18
Page 5 of 13
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