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Types MCH and MCHN Multilayer High RF Power Capacitors
2500 & 4000 Volt RF Capacitors for Medical Imaging Coils, Plasma Generators, VHF/UHF Power Amplifiers and Antenna Tuning with Nonmagnetic Option
The flexible aluminum silicate dielectric eliminates cracking and permits soldering to 260 C. These high voltage, RF capacitors need no voltage derating at temperatures up to 125 C and voltages to 4000 Vdc. Exceptionally low ESR and superior thermal qualities set the MCH/MCHN chip capacitors apart from ordinary RF capacitors.
Wave Solder Profile
Soldering
Pre-heat 220 ~255 C Peak 230 ~255 C
Highlights
* * * * * * * * *
Specifications
No thermal cracking FR4 compatible and wave solderable Extremely high Q above 50 MHz 300 250 Nonmagnetic option available 200 Ultra stable: no change with (t), (V) and (f) 150 Excellent for tuning and impedance matching 100 High flashover level 50 Withstands 2 mm bend test 25 0 Better than porcelain
Temp (C)
Applications
Soldering Peak 230~260 C
Reflow Solder Profile * MRI Coils
Pre-heat 220 ~260 C
30
50
* * * * * * *
150
RF Ablation Systems Cooling 300 Transmitters 250 RF Generators 200 10 sec. max. Antenna Tuning 150 Lasers 100 RF Power Amplifiers MRI Generators 50
Temp (C)
180 200
25 0
C
5 sec. max.
Time (sec)
Capacitance and Voltage Ratings:
RoHS Compliant Time (sec)
10 20 70
80
10 - 220 pF at 4kVdc and 270 - 1000 pF at Solder 2500 Vdc (other ratings available) Capacitance Tolerance: 5% standard (2% available) Hand Soldering Method Capacitor Temperature Range: -55 C to +125 C (with no voltage derating) * SnAgCu recommended solder 3838 (9.7 x 9.7 mm) *Case Size: Do not use strong acid type flux with RM or RMA Solder * Soldering iron tip temperature should be Temperature Characteristics: C Temp. Coefficient Cap Drift 250 C to 280 5 sec.
* 60 Watt iron or less 0
Tip of i
to +50 ppm/C
(0.05%+0.1 pF)
Good
Bad
Engineering Design Kits
Resin Coating Glass Terminal
MCH2500VKIT8, MCH4000VKIT10 Nonmagnetic MCHN2500VKIT9, MCHN4000VKIT11
High Q, Low ESR Multilayer Construction for RF Power Applications
Mica
2500 V kits 5 each of 8 values 270 to 1000 pF 4000 V kits 5 each of 10 values 10 - 220 pF
Sn Plating
Conductive Resin Ni Electrode: Type MC Cu Electrode: Nonmagnetic Type MCN
Ag Electrode
CDE Cornell Dubilier * 1605 E. Rodney French Blvd. * New Bedford, MA 02744 * Phone: (508)996-8561 * Fax: (508)996-3830 * www.cde.com
1
Types MCH and MCHN Multilayer High RF Power Capacitors
Outline Drawing
Marking on Top .405" max (10.3 mm) max L T max see chart
Soldering Pattern
.425" (10.8 mm) min.
.405" (10.3 mm) min
.. (10 395" .1 mm max )m ax W
Side
Terminal: (Ni Sn plating) MCH (Cu Sn plating) MCHN
.050" (8.3.325" .050" (1.3 mm) mm) (1.3 mm)
min min min
Part Numbering System
MCH Type
MCH = Standard MCHN = Nonmagnetic
(0.4 to 1.5 mm) 38
0.016" to 0.060"
F Temperature Coefficient
F=0 to +50 ppm/C
K Voltage
K = 2500 Vdc M=4000 Vdc
271
J
-Y Package
Blank = Bulk (100 per bag) -Y = Tray pack (100 per tray)
Case Code
38 = .380x.380
Capacitance Tolerance
100 = 10 pF 271 = 270 pF J = 5% G = 2%
Ratings (additional ratings available)
Cap (pF) 10 12 15 18 22 27 33 39 47 56 68 82 100 120 150 180 220 270 330 390 470 560 680 820 1000 Catalog Part Number* MCH38FM100D-Y MCH38FM120J-Y MCH38FM150J-Y MCH38FM180J-Y MCH38FM220J-Y MCH38FM270J-Y MCH38FM330J-Y MCH38FM390J-Y MCH38FM470J-Y MCH38FM560J-Y MCH38FM680J-Y MCH38FM820J-Y MCH38FM101J-Y MCH38FM121J-Y MCH38FM151J-Y MCH38FM181J-Y MCH38FM221J-Y MCH38FK271J-Y MCH38FK331J-Y MCH38FK391J-Y MCH38FK471J-Y MCH38FK561J-Y MCH38FK681J-Y MCH38FK821J-Y MCH38FK102J-Y 2500 Vdc 0.380 4000 Vdc Voltage (Vdc)
102 = 1000 pF D = 0.5 pF
RoHS Compliant
Length
Width
T max Inches (mm)
Inches (mm) Inches (mm)
0.080 (2.03 mm)
0.120 (3.05 mm) 0.380 +0.015 / -0 (9.65 mm +0.38 / -0) 0.160 (4.06 mm)
+0.025 / -0 (9.65 mm +0.64 /- 0)
0.240 (6.10 mm)
0.160 (4.06 mm)
0.240 (6.10 mm) 0.270 (6.86 mm)
*For nonmagnetic version change P/N prefix to MCHN
CDE Cornell Dubilier * 1605 E. Rodney French Blvd. * New Bedford, MA 02744 * Phone: (508)996-8561 * Fax: (508)996-3830 * www.cde.com
2
Types MCH and MCHN Multilayer High RF Power Capacitors
Typical Performance Data
ESR vs. Frequency for 470 pF
1
Porcelain (3838) MCH (3838) 0.1
ESR ()
0.01 0.001 1 10 100 f (MHz) 1000 10000
MCH (3838) 2.5 kVdc
Porcelain (3838) 2.5 kVdc
Current Rating (IRMS) for 470 pF at 60 C Rise 100
RMS Current (Amps)
MCH (3838)
10
Porcelain (3838)
1 1 10 100
f (MHz)
1000
10000
Porcelain (3838) 2.5 kV 11.4 A @ 64 MHz
MCH38K471J (3838) 2.5 kV 14.2 A @ 64 MHz
CDE Cornell Dubilier * 1605 E. Rodney French Blvd. * New Bedford, MA 02744 * Phone: (508)996-8561 * Fax: (508)996-3830 * www.cde.com
3
Types MCH and MCHN Multilayer High RF Power Capacitors
Typical Performance Data
Q vs. Frequency 470 pF @ 25 C
100000
10000
1000
Q
100
Q
Porcelain (3838)
MCH (3838)
10
1 1 10 100 1000 10000
f (MHz)
Porcelain (3838) 2.5 kV 11.4 A @ 64 MHz
MCH38K471J (3838) 2.5 kV 14.2 A @ 64 MHz
Impedance vs. Frequency for 470 pF @ 25 C
Impedance |Z| vs. Frequency for 470 pF @ 25 C
1000
100
|Z| ( )
Z ()
Porcelain (3838)
10
MCH (3838)
1
0.1 1 10 100 1000 10000
f (MHz)
Porcelain (3838) 2.5 kV 11.4 A @ 64 MHz MCH38K471J (3838) 2.5 kV 14.2 A @ 64 MHz
CDE Cornell Dubilier * 1605 E. Rodney French Blvd. * New Bedford, MA 02744 * Phone: (508)996-8561 * Fax: (508)996-3830 * www.cde.com
4
Types MCH and MCHN Multilayer High RF Power Capacitors
Typical Performance Data
Environmental Specifications Humidity (No Load): +40 C 2 C @ 90%
Electrical Specifications
Dielectric Strength: 2500 Vdc: to 95% RH, 500 hrs. 1.5 x Rated Voltage Measure after 24 hrs, cap for 5 seconds is 3% of initial, DF 150% 4000 Vdc: of original, IR 3x104 M, 1.2 x Rated Voltage no visual damage for 5 seconds Storage Method: Store at 0 to +40 C at Dissipation Factor (DF): 0.1% @ 1 MHz and 5 Vrms 60% RH, use within Insulation Resistance: 100K M minimum 6 months of receipt, if @ 500 Vdc 10% 6 months is exceeded,
check solderability
CDE Cornell Dubilier * 1605 E. Rodney French Blvd. * New Bedford, MA 02744 * Phone: (508)996-8561 * Fax: (508)996-3830 * www.cde.com
5
Types MCH and MCHN Multilayer High RF Power Capacitors
Mechanical Specifications Bending Test: Mount the capacitor as shown at right and press the ram bar until a 2.0 mm deflection is achieved. There will be no visual damage and the capacitors will meet the limits of methods JIS 5102 8.11 and AEC-Q200-005 without cracking or visual damage.
Soldering Specifications
Reflow Solder Profile
300 260 200 150 100 50 25 0 30 50 150 180 200 10 sec. max. Pre-heat 220 ~260 C Soldering Peak 230~260 C Cooling 300 260
Wave Solder Profile
SolderPre-heat Cooling Peak 230 ~255 C 220 ~255 C
Temp (C)
200 150 100 50 25 0 10 20 70 80 90 5 sec. max.
Time (sec)
Time (sec)
Hand Soldering Method
* * * * * SnPb or SnAgCu recommended solder Do not use strong acid type flux with RM or RMS Soldering iron tip temperature should be 280 C to 350 C 5 sec. 80 Watt iron or less Iron tip should not touch chip terminals
Solder Tip of iron
Capacitor Solder
Good
6
Bad
CDE Cornell Dubilier * 1605 E. Rodney French Blvd. * New Bedford, MA 02744 * Phone: (508)996-8561 * Fax: (508)996-3830 * www.cde.com
10-10-2007

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