250X14W472MV4TRC [JOHANSON]
Ceramic Capacitor, Multilayer, Ceramic, 25V, 20% +Tol, 20% -Tol, X7R, -/+15ppm/Cel TC, 0.0047uF, 0604,;
| 型号： | 250X14W472MV4TRC |
| 厂家： | 
JOHANSON TECHNOLOGY INC. |
| 描述： | Ceramic Capacitor, Multilayer, Ceramic, 25V, 20% +Tol, 20% -Tol, X7R, -/+15ppm/Cel TC, 0.0047uF, 0604, |
| 文件： | 总6页 (文件大小：430K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
®
X2Y Filter & Decoupling
capacitors
The X2Y® Design - A Capacitive Circuit
XꢀY® components share many common features with standard multi-layer ceramic capacitors (MLCC) for easy adoption by end-users.
• Same component sizes (0603, 0805, 1206, etc.)
• Same pick and place equipment
• Same dielectric, electrode and termination materials
• Same industry test standards for component reliability
®
A standard multi-layer ceramic capacitor (MLCC) consists of opposing electrode layers A & B. The XꢀY design adds another set of electrode layers (G) which
effectively surround each existing electrode of a two-terminal capacitor. The only external difference is two additional side terminations, creating a four-terminal
capacitive circuit, which allows circuit designers a multitude of attachment options.
G1
B
A
G2
X2Y® Circuit 1: Filtering
®
When used in circuit 1 configuration the XꢀY filter capacitor is connected across two signal lines. Differential mode noise is filtered to ground by the two Y
capacitors, A & B. Common mode noise is cancelled within the device.
Experts agree that balance is the key to a “quiet” circuit. XꢀY® is a balanced circuit device with two equal
halves, tightly matched in both phase and magnitude with respect to ground. Several advantages are
gained by two balanced capacitors sharing a single ceramic component body.
Signal 1
Ground
Signal ꢀ
A
B
G1
Gꢀ
• Exceptional common mode rejection
• Effect of voltage variation eliminated
• Matched line-to-ground capacitance
• Effects of aging & temperature are equal on both caps
InAmp Input Filter Example
®
In this example, a single Johanson XꢀY 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
X2Y®
10nF
Discrete
10nF, 2 @ 220 pF
Comments
DC offset shift
< 0.1 µV
91 dB
< 0.1 µV
9ꢀ dB
Referred to input
Common mode rejection
Source: Analog Devices, “A Designer’s Guide to Instrumentation Amplifiers (2nd Edition)” by Charles Kitchin and Lew Counts
Common Mode Choke Replacement
In this example, a 5 µH common mode choke is replaced by an 0805, 1000pF
XꢀY component acheiving superior EMI filtering by a component a fraction
DC Motor EMI Reduction: A Superior Solution
One XꢀY component has successfully replaced 7 discrete filter components
while achieving superior EMI filtering.
®
®
of the size and cost.
No Filter
CMC 5uH
XꢀY® 1000pF
Ambient
Common Mode Choke
9.0 x 6.0 x 5.0 mm
XꢀY®
ꢀ.0 x 1.3 x 1.0 mm
ꢀ
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®
X2Y Filter & Decoupling
capacitors
X2Y® Circuit 2: Decoupling
When used in circuit ꢀ configuration, A & B capacitors are placed in parallel effectively doubling the apparent capacitance while maintaining an ultra-low
inductance. The low inductance advantages of the XꢀY® Capacitor Circuit enables high-performance bypass networks at reduced system cost.
Power
A
G1
Gꢀ
• Low ESL (device only and mounted)
• Broadband performance
• Lower via count, improves routing
• Reduces component count
• Lowers placement cost
B
• Effective on PCB or package
Ground
Component Performance
®
The XꢀY
has short, multiple and opposing current paths
resulting in lower device inductance.
Mounted Performance
Mutual coupling from
opposing polarity vias
lowers inductance when
mounted on a PCB.
SYSTEM PERFORMANCE
1:5 MLCC Replacement Example
®
104 MLCs
0402 47nF
20 X2Y
0603 100nF
Transfer Impedance
seen by FPGA
®
XꢀY’s proven technology enables end-users to use one XꢀY
capacitor to replace five conventional MLCCs in a typical high
performance IC bypass design. Vias are nearly cut in half, board
space is reduced and savings are in dollars per PCB.
3
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®
X2Y Filter & Decoupling
capacitors
XꢀY® 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.
AdvAntAges
ApplicAtions
• One device for EMI suppression or decoupling
• Replace up to 7 components with one XꢀY
• Differential and common mode attenuation
• Matched capacitance line to ground, both lines
• Low inductance due to cancellation effect
• FPGA / ASIC / µ-P Decoupling
• DDR Memory Decoupling
• Amplifier FIlter & Decoupling
• High Speed Data Filtering
• Cellular Handsets
Equivalent Circuits
Cross-sectional View
Dimensional View
A
B
G
CB
EB
A
G1
G2
T
B
W
L
G
Circuit 1
(Y Cap.)
Circuit ꢀ
(ꢀ*Y Cap.)
SIZE
EIA
Order
Code
(JDI)
50
0402
X07
X7R
6.3
50
NPO
100
50
0603
X14
X7R
ꢀ5
10
6.3
100
50
NPO
0805
X15
100
50
X7R
NPO
X7R
50
1206
X18
100
50
100
50
1210
X41
X7R
X7R
X7R
= RoHS NPO
= RoHS X7R
100
50
1410
X44
100
50
1812
X43
Circuit 1 (Balanced Filtering) = A (or B) to G Circuit ꢀ (Decoupling) = A + B to G
[A to B capacitance = 1/ꢀ C1]
Rated voltage is for A or B to ground. A to B rating is ꢀ X Vrated Contact the factory for other voltage ratings and capacitance values.
ꢁ
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®
X2Y Filter & Decoupling
capacitors
Power
Signal 1
A
B
A
Filtering
Decoupling
Circuit 2 S21
Power-to-Ground
G1
Gꢀ
G1
Gꢀ
Ground
Circuit 1 S21
Signal-to-Ground
B
Ground
Signal ꢀ
Additional test data and related information available at www.johansondielectrics.com/xꢀy/
MecHAnicAl
cHArActeristics
0402 (X07)
0603 (X14)
0805 (X15)
1206 (X18)
1210 (X41)
1410 (X44)
1812 (X43)
IN
mm
IN
mm
IN
mm
IN
mm
IN
mm
IN
mm
IN
mm
0.045
0.003
1.143
0.076
0.064
0.005
1.626
0.127
0.080
0.008
2.032
0.203
0.124
0.010
3.150
0.254
0.125
0.010
3.175
0.254
0.140
0.010
3.556
0.254
0.174
0.010
4.420
0.254
L
0.024
0.003
0.610
0.076
0.035
0.005
0.889
0.127
0.050
0.008
1.270
0.203
0.063
0.010
1.600
0.254
0.098
0.010
2.489
0.254
0.098
0.010
2.490
0.254
0.125
0.010
3.175
0.254
W
T
0.020
max
0.508
max
0.026
max
0.660
max
0.040
max
1.016
max
0.050
max
1.270
max
0.070
max
1.778
max
0.070
max
1.778
max
0.090
max
2.286
max
0.008
0.003
0.203
0.076
0.009
0.004
0.229
0.102
0.009
0.004
0.229
0.102
0.009
0.004
0.229
0.102
0.009
0.005
0.229
0.127
0.009
0.005
0.229
0.127
0.009
0.005
0.229
0.127
EB
CB
0.010
0.003
0.305
0.076
0.018
0.004
0.457
0.102
0.022
0.005
0.559
0.127
0.040
0.005
1.016
0.127
0.045
0.005
1.143
0.127
0.045
0.005
1.143
0.127
0.045
0.005
1.143
0.127
How to
o
rder X2Y® eMi Filter
cApAcitors
500
X18
W
473
M
V
4
E
VOLTAGE
CASE SIZE
DIELECTRIC
CAPACITANCE
TOLERANCE
TERMINATION
TAPE MODIFIER
V = Ni barrier w/
1st two digits are
6R3 = 6.3 V
N = NPO
W = X7R
M
=
ꢀ0%
Code
Tape
Embossed
Embossed
Paper
Reel
7”
X07 = 0ꢁ0ꢀ
X1ꢁ = 0603
X15 = 0805
X18 = 1ꢀ06
Xꢁ1 = 1ꢀ10
Xꢁ3 = 181ꢀ
Xꢁꢁ = 1ꢁ10
100% Sn Plating
significant; third digit
denotes number of
zeros.
ꢀ50
500
=
=
ꢀ5 V
50 V
E
U
T
13”
7”
101 = 100 V
MARKING
ꢁ = Unmarked
R
Paper
13”
ꢁ7ꢁ = 0.ꢁ7 µF
105 = 1.00 µF
Tape specs. per EIA RSꢁ81
P/N written: 500X18Wꢁ73MVꢁE
5
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®
X2Y Filter & Decoupling
capacitors
solder
pAd
recoMMendAtions
0402 (X07)
IN mm
0603 (X14)
0805 (X15)
1206 (X18)
1210 (X41)
1410 (X44)
1812 (X43)
IN
mm
IN
mm
1.27
0.89
1.27
0.56
2.03
3.05
IN
mm
1.65
1.02
2.03
1.02
3.05
4.06
IN
mm
IN
mm
IN
mm
X
Y
G
V
0.020
0.020
0.024
0.015
0.039
0.064
0.51
0.51
0.61
0.38
0.99
1.63
0.035
0.025
0.040
0.020
0.060
0.090
0.89
0.64
1.02
0.51
1.52
2.29
0.050
0.035
0.050
0.022
0.080
0.120
0.065
0.040
0.080
0.040
0.120
0.160
0.100
0.040
0.080
0.045
0.160
0.160
2.54
1.02
2.03
1.14
4.06
4.06
0.100
0.040
0.100
0.045
0.160
0.180
2.54
1.02
2.54
1.14
4.06
4.57
0.125
0.040
0.130
0.045
0.190
0.210
3.18
1.02
3.30
1.14
4.83
5.33
U
Z
Use of solder mask beneath component is not recommended.
Z
Z
U
U
X
X
V
V
V
V
Y
G
Y
G
Good Layout
Poor Layout
Figure 1
optiMizing X2Y perForMAnce witH
proper
AttAcHMent
tecHniques
XꢀY® capacitors excel in low inductance performance for a myriad of applications including EMI/RFI filtering, power supply bypass
/ decoupling. How the capacitor is attached to the application PCB is every bit as important as the capacitor itself. Proper attention
to pad layout and via placement insures superior device performance. Poor PCB layouts squander performance, requiring more
capacitors, and more vias to do the same job. Figure 1 compares the XꢀY® recommended layout against a poor layout. Because
of its long extents from device terminals to vias, and the wide via separation, the poor layout shown performs badly. It exhibits
approximately ꢀ00% L1 inductance, and 150% Lꢀ inductance compared to recommended XꢀY layouts.
For further details on via placement and it’s effect on mounted inductance, please refer to XꢀY Attenuators, LLC. application note
“Get the Most from XꢀY Capacitors with Proper Attachment Techniques” at www.xꢀy.com/bypass.htm
®
XꢀY technology patents and registered trademark under license from XꢀY ATTENUATORS, LLC
Johanson Dielectrics, Inc. reserves the right to make design and price changes without notice. All sales are subject to the terms
and conditions printed on the back side of our sales order acknowledgment forms, including a limited warranty and remedies for
non-conforming goods or defective goods. We will be pleased to provide a copy of these terms and conditions for your review.
JOꢀANSON ꢀONG KONG LTD.
JOꢀANSON EUROPE LTD.
Unit E, 11/F., Phase 1, Kaiser Estate
ꢁ1 Man Yue Street
Hunghom, Kowloon, Hong Kong
Tel: (85ꢀ) ꢀ33ꢁ 6310 • Fax: (85ꢀ) ꢀ33ꢁ 8858
Acorn House, Old Kiln Road
Flackwell Heath, Bucks HP10 9NR
United Kingdom
15191 Bledsoe Street
Sylmar, California 913ꢁꢀ
Tel (818) 36ꢁ-9800 • FAX (818) 36ꢁ-6100
http://www.johansondielectrics.com
Tel +ꢁꢁ-16ꢀ-853-115ꢁ • Fax +ꢁꢁ-16ꢀ-853-ꢀ703
© ꢀ007 Publication XꢀY070ꢁ Printed in USA
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