ESR
Ultra-low ESR “U” Range
“U” range of Ultra-low ESR Capacitors
Electrical Details
Capacitance Range
0.1pF to 240pF
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
100G 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.
Minimum/Maximum Capacitance Values – “U” range of Ultra-low ESR Capacitors
Chip Size
Min Cap
200V/250V
Tape Quantities
13” reel – 16,000
13” reel – 12,000
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.
0603
0.1pF
100pF
7” reel – 4,000
0805
0.2pF
240pF
7” reel – 3,000
Size
Length
(L1)
Width
(W)
Thickness
(T)
Band
(L2)
0603
1.6 ± 0.2
0.8 ± 0.2
0.8 Max
0.10 – 0.40
0805
2.0 ± 0.3
1.25 ± 0.2
1.3 Max
0.13 – 0.75
Ordering Information – Ultra-low ESR “U” Range
0805
Chip Size
0603
0805
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)
250
= 250V
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
B:
± 0.10pF
C:
± 0.25pF
D:
± 0.5pF
≥10pF
F:
± 1%
G:
± 2%
J:
± 5%
K:
± 10%
J
Capacitance
Tolerance
<4.7pF
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
© Knowles 2015
UESRDatasheet Issue 9 Release Date 01/08/16 Page 1 of 11
Tel: +44 1603 723300 | Email SyferSales@knowles.com | www.knowlescapacitors.com/syfer
Performance
Periodic Tests conducted on randomly selected batches
Test
High Temperature Exposure
(Storage)
Additional Requirements
Un-powered. 1000 hours @ T=150
o
C.
Measurement at 24 ± 2 hours after test
conclusion
1000 cycles -55
o
C to +125
o
C
Measurement at 24 ± 2 hours after test
conclusion
T = 24 hours/cycle. Note: Steps 7a & 7b
not required. Un-powered.
Measurement at 24 ± 2 hours after test
conclusion
1000 hours 85
o
C/85%RH. Applied
voltage 50V and 1.5V
Measurement at 24 ± 2 hours after test
conclusion
Condition D Steady State T
A
=125
o
C at
1.5 x R
V
.
Measurement at 24 ± 2 hours after test
conclusion
Figure 1 of Method 213. Condition F
5g’s for 20 minutes, 12 cycles each of 3
orientations. Note: Use 8”X5” PCB .031”
thick 7 secure points on one long side
and 2 secure points at corners of
opposite sides. Parts mounted within 2”
from any secure point. Test from 10-
2000Hz
MIL-STD-202
Method 108
Test Method
Un-mounted.
Post test measure at room
temperature within 24 ± 2 hours
Mounted on standard test boards.
5mins soak at extremes Post test
measure at room temperature
within 24 ± 2 hours
Preconditioning at 50°C for 24
hrs followed by 10 cycles of 25°C
to 65°C at 95%RH.
Post test measure at room
temperature within 24 ± 2 hours
Mounted on test boards.
Post test measure at room
temperature within 24 ± 2 hours
Mounted on test leads
Post test measure at room
temperature within 24 ± 2 hours
3x half sine shock pulses of 1.5kg
peak.
Temperature Cycling
JESD22
Method JA-104
Moisture Resistance
MIL-STD-202
Method 106
Biased Humidity
MIL-STD-202
Method 103
Operational Life
MIL-STD-202
Method 108
MIL-STD-202
Method 213
Mechanical Shock
Vibration
MIL-STD-202
Method 204
Post test measure at room
temperature within 24 ± 2 hours
Resistance to Soldering Heat
Condition B, no pre-heat of samples:
Single Wave Solder – Procedure 2
MIL-STD-202
Method 210
Samples subjected to solder dip
at 260°C for 10±1s. Immersion
and emersion rates =
25±6mm/s.
Mounted on test boards.
Post test measure at room
temperature within 24 ± 2 hours
Thermal Shock
-55
o
C/+125
o
C. Number of cycles 300.
Maximum transfer time – 20 seconds,
Dwell time – 15 minutes. Air-Air
MIL-STD-202
Method 107
Board Flex
3mm deflection Class I
AEC-Q200-005
Bend test substrate with the
capacitor for 60s+5s.
Terminal Strength
Force of 1.0kg (0603) or 1.8kg (0805)
for 60 seconds
AEC-Q200-006
Mounted on test substrate. Force
applied to side of component by
calibrated load cell.
Post test measure at room
temperature within 24 ± 2 hours
and visual
Mounted on test boards. Tested
within 15mins of removal from
chamber.
Final measurements after 1 to
2hrs recovery time
Damp Heat Steady State
56 days, 40ºC/ 93%RH. 15 x no volts,
15 x 5Vdc, 15 x 50V
BS EN132100
Clause 4.14
© Knowles 2015
UESRDatasheet Issue 9 Release Date 01/08/16 Page 5 of 11
Tel: +44 1603 723300 | Email SyferSales@knowles.com | www.knowlescapacitors.com/syfer
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