x2y f
Ilter
& d
ecouPlIng
c
aPacItors
®
X2Y
®
filter capacitors employ a unique, patented low inductance design featuring two balanced capacitors
that are immune to temperature, voltage and aging performance differences.
These components offer superior decoupling and EMI filtering performance, virtually eliminate parasitics, and
can replace multiple capacitors and inductors saving board space and reducing assembly costs.
a
dVantageS
•
•
•
•
•
One device for EMI suppression or decoupling
Replace up to 7 components with one X2Y
Differential and common mode attenuation
Matched capacitance line to ground, both lines
Low inductance due to cancellation effect
a
pplicationS
•
•
•
•
•
Amplifier FIlter & Decoupling
High Speed Data Filtering
EMC I/O Filtering
FPGA / ASIC / µ-P Decoupling
DDR Memory Decoupling
102
2000pF 1000pF
152
3000pF 1500pF
222
4400pF 2200pF
472
9400pF 4700pF
.020µF .010µF
.030µF .015µF
.044µF .022µF
.094µF .047µF
0.20µF 0.10µF
0.36µF 0.18µF
0.44µF 0.22µF
0.68µF 0.33µF
0.80µF 0.40µF
<20pF <10pF
200pF 100pF
440pF 220pF
940pF 470pF
EMI Filtering
(1 Y-Cap.)
Power Bypass
(2 Y-Caps.)
CAP.
CODE
.078µF .039µF
0.94µF 0.47µF
474
XRX
100
220
270
330
470
101
221
471
103
153
223
393
473
104
184
224
334
404
SIZE
0402 (X07)
NPO
X7R
NPO
50
50
50
50
50
50
50
50
50
50
50
50
50
16
100 100 100 100 100 50
50
50
25
25
16
10
10
16
10
10
10
0603 (X14)
X7R
X5R
NPO
X7R
NPO
X7R
X7R
X7R
X7R
100 100 100 100 100 100 100 100 50
0805 (X15)
100 100 100 100 100 100 100 50
100 100 100 100 100 100 100 100 50
50
50
25
10
1206 (X18
1210 (X41)
1410 (X44)
1812 (X43)
VOLTAGE
RATINGS
6.3 = 6.3 VDC
10 = 10 VDC
16 = 16 VDC
25 = 25 VDC
50 = 50 VDC
100 = 100 VDC
500 = 500 VDC
100
100 100 100
500
500
500
100 100
100
16
16
10
25
100
100
16
100 100
Contact factory for part combinations not shown.
Filtering capacitance is specified as Line-to-Ground ( Terminal A or B to G)
Power Bypass capacitance is specified Power-to-Ground (A + B to G)
Rated voltage is from line to ground in Circuit 1, power to ground in Circuit 2 .
H
ow to
o
rder
X2y
®
c
apacitorS
100
VOLTAGE
6R3
100
160
250
500
101
501
=
=
=
=
=
=
=
6.3 V
10 V
16 V
25 V
50 V
100 V
500 V
P/N written: 101X14W102MV4T
X14
SIZE
X07=0402
X14=0603
X15=0805
X18=1206
X41=1210
X44=1410
X43=1812
W
DIELECTRIC
N = NPO
W = X7R
X = X5R
102
CAPACITANCE
M
TOLERANCE
V
TERMINATION
4
MARKING
4 = Unmarked
(Not available)
E
T
T
PACKING
=Embossed 7”
=Punched 7”
No code = bulk
Tape specs.
per EIA RS481
1st two digits are signifi-
M = ± 20%
V = NI Barrier with 100%
cant; third digit denotes * D = ± 0.50 pF
Tin Plating (Matte)
number of zeros, R =
*Values < 10 pF only
F = Polyterm
decimal.
flexible termination
102 = 1000 pF
104 = 0.10 µF
T = SnPb
5R6 = 5.6pF
X2Y® technology patents and registered trademark under license from X2Y ATTENUATORS, LLC
10
www.johanson dielectrics.com
105
2.0µF
20pF
44pF
54pF
66pF
94pF
1.0µF
10pF
22pF
27pF
33pF
47pF
x2y f
Ilter
& d
ecouPlIng
c
aPacItors
®
EMI Filtering S21
Signal-to-Ground
Power Bypass S21
Power-to-Ground
Labeled capacitance values below follow the P/N order code (single Y cap value)
Effective capacitance measured in Circuit 2 is 2X of the labled single Y cap value.
10.0Ω
10.0Ω
Approximate Impedance (Ω)
1.00Ω
1.00Ω
0.10Ω
0.10Ω
0.01Ω
0.01Ω
e
lectrical
c
HaracteriSticS
TEMPERATuRE COEFFICIENT:
DIELECTRIC STRENGTH:
DISSIPATION FACTOR:
INSuLATION RESISTANCE
(MIN. @ 25°C, WVDC)
TEST CONDITIONS:
OTHER:
NPO
0±30ppm/°C (-55 to +125°C)
X7R
±15% (-55 to +125°C)
X5R
±15% (-55 to +85°C)
Vrated ≤100VDC: DWV = 2.5 X WVDC, 25°C, 50mA max.
Vrated = 500VDC: DWV = 1.5 X WVDC,
25°C, 50mA max.
WVDC ≥ 50 VDC: 2.5% max.
WVDC = 25 VDC: 3.5% max.
WVDC ≥ 50 VDC: 5% max.
0.1% max.
WVDC = 10-16 VDC: 5.0% max.
WVDC ≤ 25 VDC: 10% max.
WVDC = 6.3 VDC: 10% max.
C≤ 0.047µF: 1000 ΩF or 100 GΩ, whichever is less
C> 0.047µF: 500 ΩF or 10 GΩ, whichever is less
C > 100 pF; 1kHz ±50Hz; 1.0±0.2 VRMS
C ≤ 100 pF; 1Mhz ±50kHz; 1.0±0.2 VRMS
1.0kHz±50Hz @ 1.0±0.2 Vrms
CB
W
See main catalog page 35 for additional dielectric specifications.
Equivalent Circuits
A
G1
B
G2
Cross-sectional View
G
A
G
B
Dimensional View
CB
W
L
EB
T
c
aSe
S
ize
0402 (X07)
IN
MM
L
W
T
EB
CB
0.045 ±
0.003
0.025 ±
0.003
0.020
max
0.008 ±
0.003
0.012 ±
0.003
1.143 ±
0.076
0.635 ±
0.076
0.508
max
0.203 ±
0.076
0.305 ±
0.076
EB
T
0603 (X14)
IN
MM
0.064 ±
0.005
0.035 ±
0.005
0.026
max
0.010 ±
0.006
0.018 ±
0.004
1.626 ±
0.127
0.889 ±
0.127
0.660
max
0.254 ±
0.152
0.457 ±
0.102
0805 (X15)
IN
MM
0.080 ±
0.008
0.050 ±
0.008
0.040
max
0.012 ±
0.008
0.022 ±
0.005
2.032 ±
0.203
1.270 ±
0.203
1.016
max
0.305 ±
0.203
0.559 ±
0.127
1206 (X18)
IN
MM
0.124 ±
0.010
0.063 ±
0.010
0.050
max
0.016 ±
0.010
0.040 ±
0.005
3.150 ±
0.254
1.600 ±
0.254
1.270
max
0.406 ±
0.254
1.016 ±
0.127
1210
L
(X41)
IN
MM
0.125 ±
0.010
0.098 ±
0.010
0.070
max
0.018 ±
0.010
0.045 ±
0.005
3.175 ±
0.254
2.489 ±
0.254
1.778
max
0.457 ±
0.254
1.143 ±
0.127
1410 (X44)
IN
MM
0.140 ±
0.010
0.098 ±
0.010
0.070
max
0.018 ±
0.010
0.045 ±
0.005
3.556 ±
0.254
2.490 ±
0.254
1.778
max
0.457 ±
0.254
1.143 ±
0.127
1812 (X43)
IN
MM
0.174 ±
0.010
0.125 ±
0.010
0.090
max
0.022 ±
0.012
0.045 ±
0.005
4.420 ±
0.254
3.175 ±
0.254
2.286
max
0.559 ±
0.305
1.143 ±
0.127
www.johanson dielectrics.com
11
Approximate Impedance (Ω)
x2y f
Ilter
& d
ecouPlIng
c
aPacItors
®
t
He
X2y
®
d
eSign
- a B
alanced
, l
ow
eSl, “c
apacitor
c
ircuit
”
The X2Y
®
capacitor design starts with standard 2 terminal MLC capacitor’s opposing electrode sets, A & B, and adds a third electrode set (G) which
surround each A & B electrode. The result is a highly vesatile three node capacitive circuit containing two tightly matched, low inductance capacitors
in a compact, four-terminal SMT chip.
emi F
iltering
:
The X2Y
®
component contains two shunt or “line-to-ground” Y capacitors. Ultra-low ESL (equivalent
series inductance) and tightly matched inductance of these capacitors provides unequaled high frequency
Common-Mode noise filtering with low noise mode conversion. X2Y
®
components reduce EMI emissions
far better than unbalanced discrete shunt capacitors or series inductive filters. Differential signal loss is
determined by the cut off frequency of the single line-to-ground (Y) capacitor value of an X2Y
®
.
p
ower
B
ypaSS
/ d
ecoupling
For Power Bypass applications, X2Ys
®
two “Y” capacitors are connected in parallel. This doubles the total
capacitance and reduces their mounted inductance by 80% or 1/5th the mounted inductance of similar sized
MLC capacitors enabling high-performance bypass networks with far fewer components and vias. Low ESL
delivers improved High Frequency performance into the GHz range.
gSm rFi a
ttenuation in
a
udio
& a
nalog
GSM handsets transmit in the 850 and 1850 MHz bands using a TDMA pulse
rate of 217Hz. These signals cause the GSM buzz heard in a wide range of audio
products from headphones to concert hall PA systems or “silent” signal errors
created in medical, industrial process control, and security applications. Testing
was conducted where an 840MHz GSM handset signal was delivered to the
inputs of three different amplifier test circuit configurations shown below whose
outputs were measured on a HF spectrum analyzer.
1) No input filter, 2 discrete MLC 100nF power bypass caps.
2) 2 discrete MLC 1nF input filter, 2 discrete MLC 100nF power bypass caps.
3) A single X2Y 1nF input filter, a single X2Y 100nF power bypass cap.
X2Y configuration provided a nearly flat response above the ambient and up to
10 dB imrpoved rejection than the conventional MLCC configuration.
a
mpliFier
i
nput
F
ilter
e
Xample
In this example, a single Johanson X2Y
®
component was used to filter noise at the input of a
DC instrumentation amplifier. This reduced component count by 3-to-1 and costs by over 70%
vs. conventional filter components that included 1% film Y-capacitors.
Parameter
DC offset shift
Common mode rejection
X2Y
®
10nF
< 0.1 µV
91 dB
Discrete
10nF, 2 @ 220 pF
< 0.1 µV
92 dB
Comments
Referred to input
Source: Analog Devices, “A Designer’s Guide to Instrumentation Amplifiers (2nd Edition)” by Charles Kitchin and Lew Counts
12
www.johanson dielectrics.com
x2y f
Ilter
& d
ecouPlIng
c
aPacItors
®
c
ommon
m
ode
c
Hoke
r
eplacement
• Superior High Frequency Emissions Reduction
• Smaller Sizes, Lighter Weight
• No Current Limitation
• Vibration Resistant
• No Saturation Concerns
See our website for a detailed application note with component
test comparisons and circuit emissions measurements.
Measured Common Mode Rejection
p
arallel
c
apacitor
S
olution
A common design practice is to parallel decade capacitance values to
extend the high frequency performance of the filter network. This causes an
unintended and often over-looked effect of anti-resonant peaks in the filter
networks combined impedance. X2Y’s very low mounted inductance allows
designers to use a single, higher value part and completely avoid the anti-
resonance problem. The impedance graph on right shows the combined
mounted impedance of a 1nF, 10nF & 100nF 0402 MLC in parrallel in RED.
The MLC networks anti-resonance peaks are nearly 10 times the desired
impedance. A 100nF and 47nF X2Y are plotted in BLUE and GREEN. (The
total capacitance of X2Y (Circuit 2) is twice the value, or 200nF and 98nF in this
example.) The sigle X2Y is clearly superior to the three paralleled MLCs.
X2y H
igH
p
erFormance
p
ower
B
ypaSS
- i
mproVe
p
erFormance
, r
educe
S
pace
& V
iaS
Actual measured performance of two high performance SerDes FPGA designs demonstrate how a 13 component X2Y bypass network
significantly out performs a 38 component MLC network. For more information see http://johansondielectrics.com/pdfs/JDI_X2Y_STXII.pdf
www.johanson dielectrics.com
13
Analog electronics
京公网安备 11010802033920号
EEWORLD
