SimSurfing
Noise Filter Design Support Tool Plus
Operation ManualFebruary 2022
Murata Manufacturing Co., Ltd.
01 March 2022
Copyright © Murata Manufacturing Co., Ltd. All rights reserved. 2022

IndexPage
1. Tool Information
1-1. Overview
1-2. Tool start-up and screen layout

345

2. Try it Out
2-1. Instructions for each component: 3 steps
2-2. Displayed results7811

3. Advanced Features
3-1. You can change the number of filter elements and the wire
connection method.
3-2. You can select items as you like.
3-3. You can fix/remove filters during optimization,and specify the chip size.
3-4. You can compare multiple circuit configurations.
3-5. You can output data.

121315161718

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

2IndexPage
1. Tool Information
1-1. Overview
1-2. Tool start-up and screen layout

345

2. Try it Out
2-1. Instructions for each component: 3 steps
2-2. Displayed results7811

3. Advanced Features
3-1. You can change the number of filter elements and the wire
connection method.
3-2. You can select items as you like.
3-3. You can fix/remove filters during optimization,and specify the chip size.
3-4. You can compare multiple circuit configurations.
3-5. You can output data.

121315161718

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

31. Tool Information
1-1. Overview⚫ What you can do with this toolWith this tool, you can select items from our components suitable for consumer and vehiclemounted power sources and display recommended items for filter circuits that are components ofsuch configurations, display a graph of insertion loss characteristics, and display the mounting area.
Murata components
Power Inductors (L)Chip Ferrite Bead (BEAD)
Common Mode Choke Coils (CMCC)
Multilayer Ceramic Capacitors (MLCC)
3-terminal Capacitors (3-Term.C)⚫ Features✓ Select the circuit conditions and insertion loss characteristics that you want to check, and thendisplay the recommended items with the click of a single button.

✓ You can select the frequency range for which you want to reduce noise, filter circuit
configuration (up to 8 elements), and items as you like, and then compare and display theinsertion loss and mounting area.

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

41. Tool Information
1-2. Tool start-up and screen layout⚫ Click [Noise Filter Design Support Tool] on the SimSurfing top page to display the tool window.

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

51. Tool Information
1-2. Tool start-up and screen layout⚫ This tool consists of 5 elements.
Select/Settings(a)(a) Condition selection(b) Circuit configuration(c)

Output(c) Recommended itemdisplay(d) Insertion loss display(b)(e) Mounting area display(d)(e)Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

6

IndexPage
1. Tool Information
1-1. Overview
1-2. Tool start-up and screen layout

345

2. Try it Out
2-1. Instructions for each component: 3 steps
2-2. Displayed results

7811

3. Advanced Features
3-1. You can change the number of filter elements and the wire
connection method.
3-2. You can select items as you like.
3-3. You can fix/remove filters during optimization,and specify the chip size.
3-4. You can compare multiple circuit configurations.
3-5. You can output data.

121315161718Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

72. Try it Out
2-1. Instructions for each component: 3 steps(1/3)(a) Condition selection(b) Circuit configuration

Select the application, rated current/rated voltage, and target noise frequency band
Filter circuit configuration(c) Item selection

Circuit configuration element item selection(d) Insertion loss display Differential mode and common mode (when CMCC is selected) insertion loss graph display(a) Condition selection
Select conditions using Setting. See the operating instructions.

How to operate
1 Select the application.
Select the L, BEAD, and CMCC rated current from the pull-down
2menu.
3 Select the C and CMCC rated voltage from the pull-down menu.
4 Select the ambient temperature.

Note: For details on terms, click theCopyright © Murata Manufacturing Co., Ltd. All rights reserved.

8

2. Try it Out
2-1. Instructions for each component: 3 steps(2/3)(a) Condition selection
Configure the Target Noise Frequency conditions.
Select [Edit] from the lower section to set your preferred frequency. See the operating instructions.
Note: For details on terms, click theHow to operate

Choose [Select] and then select the frequency range
you want to check.

How to operate
Select [Edit] to set your preferred frequency.

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

92. Try it Out
2-1. Instructions for each component: 3 steps(3/3)(b) Circuit configuration
Select up to 8 elements from L, BEAD, CMCC, and C to configure the filter circuit for whose
insertion loss you want to calculate.
How to operate
Select your preferred filter configuration from the [Create circuit] pop-up menu.
How to configure a new circuit 1 (The filter circuit diagram is automatically displayed below.)
2 If there are circuit component product height restrictions, you can select from [2 Max. T Size].

2Circuit symbol descriptions
1LPower Inductors

BEAD

Chip Ferrite BeadCMCC

Common Mode Choke CoilsC

Multilayer Ceramic Capacitors

3-Term.C

3-terminal Capacitors

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

102. Try it Out
2-2. Displayed results(d) Insertion loss display
The recommended items, insertion loss, and mounting area are calculated from the set/selected circuit
configuration.
You can check the detailed specifications of selected items using the [Selected Items] button on thebottom right.
1How to operate
1 Click the [Optimize] button.
The recommended items, insertion loss graph, and2mounting area are displayed.

22Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

211

IndexPage
1. Tool Information
1-1. Overview
1-2. Tool start-up and screen layout

345

2. Try it Out
2-1. Instructions for each component: 3 steps
2-2. Displayed results7811

3. Advanced Features
3-1. You can change the number of filter elements and the wire
connection method.
3-2. You can select items as you like.
3-3. You can fix/remove filters during optimization,and specify the chip size.
3-4. You can compare multiple circuit configurations.
3-5. You can output data.

121315161718

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

12

3. Advanced Features
3-1. You can change the number of filter elements and thewire connection method.
How to change the number of filter elements
You can change the circuit configuration diagram item configuration from the pull-down menu.
How to operate
11

Select an item in the pull-down menu.
You can add up to 8 elements.

2

The circuit diagram is updated.

2

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

13

3. Advanced Features
3-1. You can change the number of filter elements and thewire connection method.
How to change the number of filter elements
You can change the circuit configuration diagram item configuration.
How to operate

11

Select a wire connection method in the pull-downmenu. You can select from 4 types.

2

The circuit diagram is updated.

2Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

14

3. Advanced Features
3-2. You can select items as you like.
How to change the selected filter
Selection of items for each element configured in the circuit is handled in mini SimSurfiing. Youcan select items with specified values and ranges for each electrical characteristic.
How to operate
1 Click the [Select] button.

1

2 Select items in the mini SimSurfing pop-up.
3 Click the confirmation bar at the bottom of mini SimSurfing.
4 Close mini SimSurfing and return to the tool window.

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3

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

15

3. Advanced Features
3-3. You can fix/remove filters during optimization, and specify
the chip size.
How to fix/remove selection filters and specify the chip size
You can make a selection from the filter list on the right side of the Circuit Pattern column where
the circuits are displayed.
Make a selection from the [Status] and [Size] pull-down menus under [Optimize Setup] in the table.
1
2

How to operate
1 Three menus appear in the pull-down menu.
Menu
Optim.: Displays optimized items
2Fix: Fix
None: No filter

４3

How to operate
3 Multiple size options appear in the pull-down menu.
Menu
4 Free. : Displays user-set items
Non-Free: Locked to items of a specified size.

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

16

3. Advanced Features
3-4. You can compare multiple circuit configurations.
How to compare multiple circuit conditions
You can compare multiple conditions using the Sim tab.
If conditions are present on multiple tabs, the insertion loss graph and mounting area results
are automatically displayed.

Use the [Delete], [Copy], and [Paste] buttons next to [Optimize].
Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

17

3. Advanced Features
3-5. You can output data.
How to output data
The numerical data CSV output and graph image output buttons can be found at the lower left ofinsertion loss.
You can output the results by clicking these buttons.

Copyright © Murata Manufacturing Co., Ltd. All rights reserved.

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