Characteristics
- This Design Kit contains 10 test boards and a selection of suitable components for the simple construction of various line filters.
- It offers a fast and cost-effective solution to set up line filters for common and differential mode suppression.
- This are PCBs for test and evaluation purposes. The boards should not be installed in the final application.
Evaluate the best filter for your application!
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | IR (A) | L (mH) | RDC max. (Ω) | VR (V (AC)) | VT (V (AC)) | Samples |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 7446620027 | SPEC | 10 files | Active i| Production is active. Expected lifetime: >10 years. | WE-LF Common Mode Power Line Choke | 0.4 | 27 | 1.2 | 250 | 1500 | ||
| 744822120 | SPEC | 11 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CMB Common Mode Power Line Choke | 0.5 | 20 | 0.54 | 250 | 1500 | ||
| 744822110 | SPEC | 11 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CMB Common Mode Power Line Choke | 1 | 10 | 0.36 | 250 | 1500 | ||
| 7446621007 | SPEC | 10 files | Active i| Production is active. Expected lifetime: >10 years. | WE-LF Common Mode Power Line Choke | 1 | 6.8 | 0.3 | 250 | 1500 | ||
| 744822233 | SPEC | 11 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CMB Common Mode Power Line Choke | 1.5 | 3.3 | 0.12 | 250 | 1500 | ||
| 744823220 | SPEC | 11 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CMB Common Mode Power Line Choke | 1.5 | 20 | 0.27 | 250 | 1500 | ||
| 744822222 | SPEC | 11 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CMB Common Mode Power Line Choke | 2 | 2.2 | 0.07 | 250 | 1500 | ||
| 744823210 | SPEC | 11 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CMB Common Mode Power Line Choke | 2 | 10 | 0.125 | 250 | 1500 | ||
| 744824220 | SPEC | 11 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CMB Common Mode Power Line Choke | 2 | 20 | 0.22 | 250 | 1500 | ||
| 7446622002 | SPEC | 10 files | Active i| Production is active. Expected lifetime: >10 years. | WE-LF Common Mode Power Line Choke | 2 | 2.2 | 0.1 | 250 | 1500 | ||
| 744823305 | SPEC | 11 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CMB Common Mode Power Line Choke | 2.5 | 5 | 0.095 | 250 | 1500 | ||
| 744822301 | SPEC | 11 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CMB Common Mode Power Line Choke | 3 | 1 | 0.035 | 250 | 1500 | ||
| 744824310 | SPEC | 10 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CMB Common Mode Power Line Choke | 3 | 10 | 0.105 | 250 | 1500 | ||
| 744823422 | SPEC | 11 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CMB Common Mode Power Line Choke | 4 | 2.2 | 0.03 | 250 | 1500 | ||
| 744824433 | SPEC | 11 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CMB Common Mode Power Line Choke | 4 | 3.3 | 0.035 | 250 | 1500 | ||
| 74466240007 | SPEC | 10 files | Active i| Production is active. Expected lifetime: >10 years. | WE-LF Common Mode Power Line Choke | 4 | 0.7 | 0.027 | 250 | 1500 | ||
| 7448030509 | SPEC | 11 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CMBNC Common Mode Power Line Choke Nanocrystalline | 5 | 9 | 0.032 | 300 | 2100 | ||
| 744823601 | SPEC | 11 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CMB Common Mode Power Line Choke | 6 | 1 | 0.013 | 250 | 1500 | ||
| 744824622 | SPEC | 11 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CMB Common Mode Power Line Choke | 6 | 2.2 | 0.02 | 250 | 1500 | ||
| 7448040707 | SPEC | 11 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CMBNC Common Mode Power Line Choke Nanocrystalline | 7 | 7 | 0.022 | 300 | 2100 | ||
| 744824801 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CMB Common Mode Power Line Choke | 7.5 | 1 | 0.01 | 250 | 1500 | ||
| 7466113 | SPEC | – | 5 files | Active i| Production is active. Expected lifetime: >10 years. | WP-SMSH REDCUBE SMT with external thread with Pin | 50 | – | – | – | – | |
| 7466114 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WP-SMSH REDCUBE SMT with external thread with Pin | 50 | – | – | – | – | |
| 890324022007 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-FTX2 Film Capacitors | – | – | – | 275 | – | ||
| 890324023006 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-FTX2 Film Capacitors | – | – | – | 275 | – | ||
| 890324023025 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-FTX2 Film Capacitors | – | – | – | 275 | – | ||
| 702936000 | SPEC | – | 3 files | Active i| Production is active. Expected lifetime: >10 years. | WA-SNSR Self-Retaining Spacer | – | – | – | – | – | |
| 8853522110021 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSSA Interference Suppression | – | – | – | 250 | – | ||
| 8853522110031 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSSA Interference Suppression | – | – | – | 250 | – | ||
| 8853522130111 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSSA Interference Suppression | – | – | – | 250 | – | ||
| 8853522130151 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSSA Interference Suppression | – | – | – | 250 | – |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | IR (A) | L (mH) | RDC max. (Ω) | VR (V (AC)) | VT (V (AC)) | Samples |
|---|
Low-pass filters for common and differential mode suppression
Common Mode Filter
At common mode noise the inductance of the Common Mode Choke (CMC) is very high. This inductance and the Y-Capacitors (CY1, CY2) build a low-pass for high frequency common mode noise. The Y-Capacitors create a conductor for high frequency noise to internal ground, so common mode noise can be diverted. Because of the high common mode impedance of the Common Mode Choke at high frequencies, the interference current will be attenuated.
Differential Mode Filter
At differential signal noise current flows in through line L and returns through line N. Basically, in this situation the X-Capacitor (Cx) and the Leakage Inductance (LLeak) of the Common Mode Choke build a low pass filter. The loop of this low pass filter is closed via the X-Capacitor. The high frequency interference is filtered. Meanwhile the supply current, which has typically a much lower frequency (50-60 Hz), will pass the filter.
Insertion Loss Examples
Example 1 measured with:
CMC: WE-CMB S / 744 822 110 /
L = 10 mH / IR = 1 A
Cx: 890 324 023 025 /
C = 0.15 µF / UR = 275 VAC
Cy: 885 352 213 015 1/
C = 2200 pF / UR = 250 VAC
Example 2 measured with:
CMC: WE-CMB L / 744 824 220 /
L = 20 mH / IR = 2 A
Cx: 890 324 023 025 /
C = 0.15 µF / UR = 275 VAC
Cy: 885 352 213 015 1/
C = 2200 pF / UR = 250 VAC
Example 3 measured with:
CMC: WE-LF / 744 662 200 2 /
L = 2.2 mH / IR = 2 A
Cx: 890 324 023 025 /
C = 0.15 µF / UR = 275 VAC
Cy: 885 352 213 015 1/
C = 2200 pF / UR = 250 VAC
Example 4 measured with:
CMC: WE-CMBNC M / 744 803 050 9 /
L = 9 mH / IR = 5 A
Cx: 890 324 023 025 /
C = 0.15 µF / UR = 275 VAC
Cy: 885 352 213 015 1/
C = 2200 pF / UR = 250 VAC
Evaluation Boards
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