Types MCH and MCHN Multilayer High RF Power Capacitors
CDE Cornell Dubilier • 1605 E. Rodney French Blvd. • New Bedford, MA 02744 • Phone: (508)996-8561 • Fax: (508)996-3830 • www.cde.com
Highlights
No thermal cracking
FR4 compatible and wave solderable
Extremely high Q above 50 MHz
Nonmagnetic option available
Ultra stable: no change with (t), (V) and (f)
Excellent for tuning and impedance matching
High flashover level
Withstands 2 mm bend test
Better than porcelain
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Specifications
Capacitance and Voltage Ratings:
Capacitance Tolerance:
Temperature Range:
Case Size:
Temperature Characteristics:
2500 & 4000 Volt RF Capacitors for Medical Imaging Coils, Plasma Generators,
VHF/UHF Power Amplifiers and Antenna Tuning with Nonmagnetic Option
10 – 220 pF at 4kVdc and 270 – 1000 pF at
2500 Vdc (other ratings available)
±5% standard (±2% available)
–55 ºC to +125 ºC (with no voltage derating)
3838 (9.7 x 9.7 mm)
Temp. Coefficient Cap Drift
0 to +50 ppm/ºC ±(0.05%+0.1 pF)
Applications
MRI Coils
RF Ablation Systems
Transmitters
RF Generators
Antenna Tuning
Lasers
RF Power Amplifiers
MRI Generators
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Engineering Design Kits
MCH2500VKIT8, MCH4000VKIT10
Nonmagnetic MCHN2500VKIT9, MCHN4000VKIT11
2500 V kits 5 each of 8 values 270 to 1000 pF
4000 V kits 5 each of 10 values 10 – 220 pF
Terminal
Resin Coating
Glass
Sn Plating
Ni Electrode: Type MC
Cu Electrode: Nonmagnetic Type MCN
Conductive Resin
Ag Electrode
Mica
Hand Soldering Method
SnAgCu recommended solder
Do not use strong acid type flux with RM or RMA
Soldering iron tip temperature should be
250 ºC to 280 ºC ≤ 5 sec.
60 Watt iron or less
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Solder
Solder
Tip of iron
Good Bad
Capacitor
300
250
200
150
100
50
25
150 180 200
5030
0
220 ~260 ºC
Pre-heat Soldering Cooling
Peak 230~260 ºC
10 sec. max.
Temp (ºC)
Time (sec)
Reflow Solder Profile
70 80 90
2010
0
Time (sec)
Temp (ºC)
300
250
200
150
100
50
25
220 ~255 ºC
Peak 230 ~255 ºC
5 sec. max.
Pre-heat
Soldering
Cooling
Wave Solder Profile
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 ºC and voltages to 4000 Vdc.
Exceptionally low ESR and superior thermal qualities
set the MCH/MCHN chip capacitors apart from
ordinary RF capacitors.
High Q, Low ESR Multilayer
Construction for RF Power Applications
RoHS Compliant
1
CDE Cornell Dubilier • 1605 E. Rodney French Blvd. • New Bedford, MA 02744 • Phone: (508)996-8561 • Fax: (508)996-3830 • www.cde.com
Types MCH and MCHN Multilayer High RF Power Capacitors
Part Numbering System
←←←←
← →
← →
↑
← →
↓
(10.1 mm) max
(10.3 mm) max
T max
(
0.4 to 1.5 mm)
(10.3 mm)
min
(1.3 mm)
min
(8.3 mm)
min
Outline Drawing Soldering Pattern
L
W
Side
Marking on
Top
Terminal:
(Ni Sn plating) MCH
(Cu Sn plating) MCHN
..395” max
.405” max
0.016” to 0.060” .325”
.050” .050”
.405”
Ratings (additional ratings available) RoHS Compliant
MCH 38 F K 271 J –Y
Case
Type Code Temperature Voltage Capacitance Tolerance Package
MCH = Standard 38 = .380x.380 Coefficient K = 2500 Vdc 100 = 10 pF J = ±5% Blank = Bulk (100 per bag)
MCHN = Nonmagnetic F=0 to +50 ppm/ºC M=4000 Vdc 271 = 270 pF G = ±2% –Y = Tray pack (100 per tray)
102 = 1000 pF D = ± 0.5 pF
Cap Catalog Voltage Length Width T max
(pF) Part Number* (Vdc) Inches (mm) Inches (mm) Inches (mm)
10 MCH38FM100D-Y
4000 Vdc
0.080 (2.03 mm)
12 MCH38FM120J-Y
15 MCH38FM150J-Y
18 MCH38FM180J-Y
22 MCH38FM220J-Y
27 MCH38FM270J-Y
0.120 (3.05 mm)
33 MCH38FM330J-Y
39 MCH38FM390J-Y
47 MCH38FM470J-Y
56 MCH38FM560J-Y
68 MCH38FM680J-Y 0.380 0.380
82 MCH38FM820J-Y +0.025 / -0 +0.015 / -0
100 MCH38FM101J-Y (9.65 mm (9.65 mm
120 MCH38FM121J-Y +0.64 /- 0) +0.38 / -0) 0.160 (4.06 mm)
150 MCH38FM151J-Y
180 MCH38FM181J-Y 0.240 (6.10 mm)
220 MCH38FM221J-Y
270 MCH38FK271J-Y
2500 Vdc
0.160 (4.06 mm)
330 MCH38FK331J-Y
390 MCH38FK391J-Y
470 MCH38FK471J-Y
560 MCH38FK561J-Y
0.240 (6.10 mm)
680 MCH38FK681J-Y
820 MCH38FK821J-Y
1000 MCH38FK102J-Y 0.270 (6.86 mm)
*For nonmagnetic version change P/N prefix to MCHN
see chart
(1.3 mm)
min
← .425” (10.8 mm) min.
→
2
Types MCH and MCHN Multilayer High RF Power Capacitors
CDE Cornell Dubilier • 1605 E. Rodney French Blvd. • New Bedford, MA 02744 • Phone: (508)996-8561 • Fax: (508)996-3830 • www.cde.com
Typical Performance Data
Current Rating (IRMS) for 470 pF at 60 ºC Rise
1
10
100
1 10 100 1000 10000
f (MHz)
RMS Current
Porcelain (3838) 2.5 kV 11.4 A @ 64 MHz MCH38K471J (3838) 2.5 kV 14.2 A @ 64 MHz
MCH (3838)
Porcelain (3838)
ESR vs. Frequency for 470 pF
0.001
0.01
0.1
1
1 10 100 1000 10000
f (MHz)
ESR (�
)
Porcelain (3838) 2.5 kVdc
MCH (3838) 2.5 kVdc
Porcelain (3838)
MCH (3838)
(Amps)
3
CDE Cornell Dubilier • 1605 E. Rodney French Blvd. • New Bedford, MA 02744 • Phone: (508)996-8561 • Fax: (508)996-3830 • www.cde.com
Types MCH and MCHN Multilayer High RF Power Capacitors
Typical Performance Data
Q vs. Frequency 470 pF @ 25 ºC
1
10
100
1000
10000
100000
1 10 100 1000 10000
f (MHz)
Q
Porcelain (3838) 2.5 kV 11.4 A @ 64 MHz MCH38K471J (3838) 2.5 kV 14.2 A @ 64 MHz
Porcelain (3838) MCH (3838)
Impedance |Z| vs. Frequency for 470 pF @ 25 ºC
0.1
1
10
100
1000
1 10 100 1000 10000
f (MHz)
|Z| (�)
Porcelain (3838) 2.5 kV 11.4 A @ 64 MHz MCH38K471J (3838) 2.5 kV 14.2 A @ 64 MHz
Porcelain (3838)
MCH (3838)
Q
Z (Ω)
Impedance vs. Frequency for 470 pF @ 25 ºC
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Types MCH and MCHN Multilayer High RF Power Capacitors
CDE Cornell Dubilier • 1605 E. Rodney French Blvd. • New Bedford, MA 02744 • Phone: (508)996-8561 • Fax: (508)996-3830 • www.cde.com
Typical Performance Data
Environmental Specifications
Dielectric Strength:
Dissipation Factor (DF):
Insulation Resistance:
Electrical Specifications
Humidity (No Load):
Storage Method:
+40 ºC ±2 ºC @ 90%
to 95% RH, 500 hrs.
Measure after 24 hrs, cap
is ±3% of initial, DF ≤150%
of original, IR 3x104 MΩ,
no visual damage
Store at 0 to +40 ºC at
≤60% RH, use within
6 months of receipt, if
6 months is exceeded,
check solderability
2500 Vdc:
1.5 x Rated Voltage
for 5 seconds
4000 Vdc:
1.2 x Rated Voltage
for 5 seconds
≤0.1% @ 1 MHz and
≤5 Vrms
100K MΩ minimum
@ 500 Vdc ±10%
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CDE Cornell Dubilier • 1605 E. Rodney French Blvd. • New Bedford, MA 02744 • Phone: (508)996-8561 • Fax: (508)996-3830 • www.cde.com
Types MCH and MCHN Multilayer High RF Power Capacitors
Soldering Specifications
Reflow Solder Profile
70 80 90
2010
0
Time (sec)
Temp (ºC)
300
260
200
150
100
50
25
220 ~255 ºC
Peak 230 ~255 ºC
5 sec. max.
Pre-heat
Solder-
Cooling
Wave Solder Profile
300
260
200
150
100
50
25
150 180 200
50
30
0
220 ~260 ºC
Pre-heat Soldering Cooling
Peak 230~260 ºC
10 sec. max.
Time (sec)
SnPb or SnAgCu recommended solder
Do not use strong acid type flux with RM or RMS
Soldering iron tip temperature should be
280 ºC to 350 ºC ≤ 5 sec.
80 Watt iron or less
Iron tip should not touch chip terminals
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Solder
Solder
Tip of iron
Good Bad
Capacitor
10-10-2007
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.
Hand Soldering Method
Bending Test:
Mechanical Specifications
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