02/22/07 - RF Capacitor Performance Data

Thu, 22 Feb 2007 11:32:28 EST

Changes and updates to the RF Capacitor Performance Data for Multilayer Types MC & MCH Chips and Clad SMT Types MIN & MCM file:

Q & Z for 100 pF need to have the flat bottoms fixed.
Q & Z for 470 pF need to have the flat bottoms fixed.
Q & Z for 1000 pF need to have the flat bottoms fixed.
Add the word "Amps" to the 5 Current Rating charts; the label will read as "RMS Current (Amps)";
Z Impedance curve needs to get rid of the kink in the MC (1812), MCH (3838) and MC (2220) curve (they are all the same curve.) The curve for the type MCs should look just like the curve for the MCH data sheet. Replace the MC curve on the Z chart.

02/22/07 - Types MC and MCM

Thu, 22 Feb 2007 11:32:28 EST

Changes and updates to the Type MC/MCM file:

Z charts need to have flat bottoms fixed.
Q chart needs to have the rest of the curve after the V added. The curves show the downward slope to the bottom but the upward slope has been cut off.
Leave MC data sheet Z chart as is.
Change the 470 pF curve for MC18 and MC22 (they are all the same curve) on the Z chart. The curve should look just like the MCH (3838) curve. All three parts, 1812, 2220 & 3838 have the same plots.
Add the Ω symbol to the Y axis of the Impedance (Z) charts
The word for Ω (Ohms) is spelled out on the Q chart. Change to the symbol Ω so that all of our charts for Z and Q are consistent.
Under Applications: Change low noise-amplifiers to: Land Mobile antennas 27 to 900 MHZ
Page 5: Delete the Ω after Q Ω on the Q chart
Page 5: Fix the flat bottom on the Impedance chart for the 470 pF curve
Under Highlights: Delete: New nonmagnetic option, Add: Six Engineering Design Kits

02/22/07 - Types MCH and MCHN

Thu, 22 Feb 2007 11:32:28 EST

Changes and updates to the Types MCH/MCHN file:

Replace 470 pF curve with correct 470 pF curve from RF Performance Data.
Replace paragraph one with paragraph below:

"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."
Top of pg. 3, update text to read "BDV".
Pg. 1 in the title, change "Multilayer RF Capacitors" to "Multilayer High RF Power Capacitors"
In the sub headline (line two), replace "Transmitters" with "VHF/UHF Power Amplifiers"
In paragraph 1 replace "Mica's natural rugged flexibility and" with "A flexible and elastic multilayer sandwich of aluminum silicate plus a high temperature".
Paragraph 1 line 4 after "capacitors operate" add "with no voltage derating at temperatures up to"
Under the title Highlights delete "125°C rated with no voltage derating", replace "Very low temperature coefficient" with "High flashover level", replace "Nonmagnetic MCHN type for" with "Nonmagnetic option available"
Under Specifications Temperature Range after -55°C to + 125°C add (with no voltage derating)
Under design kits after MCHN2500VKIT9 add "Nonmagnetic", after 3838 size change 9.9 x 9.9 to 9.7 x 9.7
Re-add construction diagram with caption "High Q, Low ESR Construction for RF Power Applications"
Last page: In the "Wave Solder Profile" change the temperature under Pre-heat from 210-240 to 220 – 255, change the temperature under Peak from 220 -240 to 230 -255
Move the title Hand Soldering Method to the center and up a little higher
Number all the pages for easy reference.
Page one Change the headline "2500 Volt RF Capacitors for High Power Matching" to "2500 & 4000 Volt ratings for High Power RF Matching
Paragraph one, line five, change 2500 Vdc to 4000 Vdc
Under Specifications, Voltage Rating: change 2500 Vdc to 2500 and 4000 Vdc
Last P/N on page MCHN38FK103J-Y: Correct 103 to 102
In the Part Numbering System add the letter "F" between 38 and the letter "K"
Move: MCH = Standard (on the next line) over to the left hand margin and also the MCHN = Non-magnetic, move to the left margin.
Correct Non-magnetic to Nonmagnetic
Under "K" the Voltage column, below the line K = 2500 Vdc, add: M = 4000 Vdc
Move the next to last page headed MCH vs. Porcelain (3838) to page three, between the Ratings page and the first Typical Performance page
Add the Ω symbol to the Y axis of the Impedance (Z) charts
Page 2: add ratings (5 now & up to 12 more in a month or so) and more room is required. To gain space label the standard parts as available as nonmagnetic per below:
Delete all of the MCHN38FKxxxJ-Y P/N entire row (8 places)
Add an asterisk to the title at the top of the title: "Catalog Part Number*"
Add between bottom of Ratings chart box and the CDE address: "*For nonmagnetic version change P/N prefix to MCHN"
Add the following ratings: 100 MCHM38FM101J-Y, 120 MCHN38FM121J-Y, 150 MCHN38FM151J-Y, 180 MCHN38FF181J-Y, 220 MCHN38FM221J-Y
Delete the row, with the words 2500 Vdc between the column headers and all the ratings, P/Ns etc.
Delete the gridlines in the ratings box but keep the borders.
Add gridline between 220 and 270 pF in the Voltage (Vdc) column.
The Voltage number for the center of Voltage column between 100 and 220 inclusive is 4000.
The Voltage number between 270 to 1000 is 2500.
In the L max column replace the max with the actual dimension and a tolerance as below:
Change the column title from L max and W max to Length and Width respectively.
The new Length dimensions are: 0.380 +0.025 / -0 (9.65 +0.64 / -0)
The new Width dimensions 0.380 +0.015 / -0 (9.65 +0.38 / -0)
The T max vary by capacitance. Leave the column header as is and below:
Add gridlines between 150 & 180, 220 & 270, 470 & 560, 820 & 1000
The new T max are: 100 to 150 0.160 (4.06), 180 to 220 0.240 (6.10), 270 to 470 0.160 (4.06), 560 to 820 0.240 (6.10), 1000 0.270 (6.86)
Page 3: Replace the Allowable Voltage vs F with the attached chart that shows both 2500 & 4000 Vdc
Page 4: Add (Amps) to the Current Rating chart Y axis label; RMS Current (Amps)
Page 5: Delete (Ω) on the Q chart after the Q. Just show the letter Q.
Page 6: The two solder profile curves are labeled as going up to 260 but they are only shown on the 250° line. Moving the curve higher sounds like a lot of work. If that’s correct then I would suggest relabeling the 250° line as 260°. Relabel 250 on Y axis on two (2) charts to 260.
Page 2: The Soldering Pattern, change to: .050 (1.3mm) min, .325 (8.3mm) min, .050 (1.3mm) min, .405 (10.3mm) min
Add a new dimension at the top of the diagram. It is the overall width of the entire diagram from left to right.
Above the line the numbers are .425 (10.8 mm) min; It’s really the total of the three numbers in the diagram: .050 + .325 + .050 = .425.
Page 1, under Specifications: Change Capacitance Range to Capacitance / Voltage Ratings: and move it to the left in order to maintain the margin on the right
Page 1, under Specifications: Change the listing for Capacitance / Voltage and put it on 2 lines: 10 – 220 pF / 4kVdc and 270 – 1000 pF / 2500 Vdc; (other ratings available on request)
Page 1, under Specifications: Delete the Voltage Ratings: 2500Vdc and 4000
Page 1, under Specifications: Max. Allowable Voltage: change page 5 to page 3
Page 1, under Specifications: After Design Kits for Engineers cut the red line about 3/4 inch shorter. End it about directly above the end of the word nonmagnetic below.
Page 1, under Specifications: The High Q, Low ESR Construction is in small font in order to make it fit. Put it on two lines and increase the font. Insert the word Multilayer.
Page 2: Change the Outline Drawing sizes as follows: .425 to .395 and 10.3 to 10.1, .408 to .405
Page 2: Under P/N System add under Capacitance a third example 100 = 10 pF and it should go at the top of the list. That would make three examples and require the 102 = 1000 pF to go to another line.
Ratings table: Under T max column add a 0 to the .08 making it 0.080
Ratings table: Delete the – minus sign in front of 2.03
Ratings table: Add a 0 after 0.12 to make it 0.120
Ratings table: Add a 0 after .16 making it 0.160
Ratings table: Add a 0 after 0.24 making it 0.240
Ratings table: Change 0.158 (4.0) to 0.240 (6.10)
Page 3: The label for the Allowable Voltage chart Use Voltage(V) put a space between Voltage and (V)
Page 5: Impedance Z vs. Frequency Chart: Remove the vertical line before the Title l Impedance Z vs Frequency, Remove the letter Z from the title
Page 2: Ratings chart: Length column: Add a – before 0 in the +0.64 / -0) line
Page 2: Ratings chart: Width column: Add a / between +0.015 / -0, Add a + before +0.38 / -0)

04/04/07 - Types MCH and MCHN

Wed, 04 Apr 2007 14:38:28 EST

Type MCH/MCHN file updated.

CDE - Catalog/Datasheet Update

02/22/07 - RF Capacitor Performance Data

02/22/07 - Types MC and MCM

02/22/07 - Types MCH and MCHN

04/04/07 - Types MCH and MCHN