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VFM-25C
POWER LINE FILTERS
⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.
- Manufacturer: BEL / PARTNER STOCK
- Product type:
- SVHC: To Be Advised
| Delivery and price | |
|---|---|
| Units per pack | 6 |
| Price | 53.73 € |
| Current stock | 50+ |
| Lead time | 30 days |
Datasheet
Additional Resources: Product Page
**date** 01/2017 **page** 1 of 7
## **SERIES: VFM-XX**
## **DESCRIPTION DC EMI FILTER** :
## **FEATURES**
- **•compact size**
- **•suitable for use with a wide range of dc-dc converters**
- **•reduces common and differential mode noise**
## RoHS
|RoHS|||||
|---|---|---|---|---|
|**MODEL**|**input voltage**|**input surge voltage1**|**input current**|**isolation voltage2**|
||**range**|**nominal**|**max.**|**min.**|
||**(Vdc)**|**(Vdc)**|**(A)**|**(Vdc)**|
|VFM-10A|0 ~ 75|100|10|1,500|
|VFM-15C|0 ~ 75|100|15|1,500|
|VFM-20A|0 ~ 75|100|20|1,500|
|VFM-25C|0 ~ 36|50|25|1,500|
## **MODEL**
- **1) for 100 ms**
**2) input to ground, output to ground**
## **GENERAL**
|**GENERAL**|||||||
|---|---|---|---|---|---|---|
|**parameter**|**conditions/description**||**min**|**nom**|**max**|**units**|
|dimensions|VFM-10A:|2.00x1.00x0.46 inch|||||
|||50.8x25.4x11.7 mm|||||
||VFM-15C:|4.06x3.11x0.89 inch|||||
|||103.2x79x22.7 mm|||||
||VFM-20A:|2.00x1.60x0.50 inch|||||
|||50.8x40.6x12.7 mm|||||
||VFM-25C:|4.06x3.11x0.89 inch|||||
|||103.2x79x22.7 mm|||||
|case material|VFM-10A/20A: black plastic||||||
||VFM-15C/25C: black coated steel||||||
|isolation voltage|input to ground, output to ground|input to ground, output to ground|1,500|||Vdc|
|isolation resistance|input to ground, output to ground|input to ground, output to ground|107|||W|
|dc resistance|total for two legs|||16||mW|
## **ENVIRONMENTAL**
|**parameter**|**conditions/description**|**min**|**nom**|**max**|**units**|
|---|---|---|---|---|---|
|cooling|natural convection|||||
|operating temperature||-40||100|°C|
|case temperature||||100|°C|
|storage temperature||-40||100|°C|
20050 SW 112[th] Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2383 www.cui.com
Additional Resources: Product Page
**date** 01/2017 **page** 2 of 7
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## **SERIES: VFM-XX DESCRIPTION DC EMI FILTER** :
## **DRAWING (VFM-10A)**
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**----- Start of picture text -----**<br>
2.00 [50.8]<br>0.475 [12.06] NOTE:Pin Size is ø0.04 inch (ø1.02 mm)<br>All Dimensions in inches (mm)<br>0.15 [3.8] 1.225 [31.12] Tolerances: Inches: X.XX= ±0.02, X.XXX= ±0.010<br>0.12 [3.2] Millimeters: X.X= ±0.5 , X.XX=±0.25<br>2 5 4<br>0.750 [19.05]<br>1 BOTTOM VIEW 3 1.00 [25.4] PIN CONNECTION<br>Pin Function<br>0.040 [1.02] 1 +V Input<br>2 -V Input<br>0.22 [5.6] min. 3 +V Output<br>4 -V Output<br>SIDE VIEW 0.46 [11.7] 5 GND<br>**----- End of picture text -----**<br>
## **DRAWING (VFM-20A)**
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**----- Start of picture text -----**<br>
2.00 [50.8]<br>0.700 [17.78] 0.15 [3.8]<br>0.15 [3.8] 1.000 [25.40]<br>4<br>3 9 8<br>7<br>2<br>6<br>1<br>5<br>BOTTOM VIEW<br>0.040 [1.02]<br>0.22 [5.6] min.<br>SIDE VIEW 0.50 [12.7]<br>1.60 [40.6] 0.150 [3.81] 0.25 [6.3]<br>0.200 [5.08]<br>0.200 [5.08]<br>0.200 [5.08]<br>0.200 [5.08] 0.200 [5.08]<br>0.200 [5.08]<br>**----- End of picture text -----**<br>
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**----- Start of picture text -----**<br>
DIMENSIONS:<br>NOTE:Pin Size is ø0.04 inch (ø1.02 mm)<br>All Dimensions in inches (mm)<br>Tolerances Inches: X.XX= ±0.02 , X.XXX= ±0.010<br>Millimeters: X.X= ±0.5 , X.XX=±0.25<br>PIN CONNECTION<br>Pin Function<br>1,2 +V Input<br>3,4 -V Input<br>5,6 +V Output<br>7,8 -V Output<br>9 GND<br>**----- End of picture text -----**<br>
20050 SW 112[th] Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2383 www.cui.com
Additional Resources: Product Page
**date** 01/2017 **page** 3 of 7
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## **SERIES: VFM-XX**
## **DESCRIPTION DC EMI FILTER** :
## **DRAWING (VFM-15C/25C)**
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**----- Start of picture text -----**<br>
POWER 2.92 [74.2] CONVERTER<br> +Vin -Vin GND -Vin +Vin<br>3.70 [94.2] 2.16 [55.0]<br>3.15 [80.0]<br>4-R0.088 [R<br>2.25]<br>.0] .0]<br>71 79<br>.0]<br>12<br>2.79 [ 3.11 [<br>4-0.47 [<br>]<br>.0]<br>22.7 1<br>0.89 [ 0.03 [<br>]38.5<br>1.51 [<br>**----- End of picture text -----**<br>
20050 SW 112[th] Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2383 www.cui.com
Additional Resources: Product Page
**date** 01/2017 **page** 4 of 7
## **SERIES: VFM-XX DESCRIPTION DC EMI FILTER** :
## **VFM-10A INTERNAL SCHEMATIC**
## **VFM-20A INTERNAL SCHEMATIC**
## **VFM-15C/25C INTERNAL SCHEMATIC**
20050 SW 112[th] Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2383 www.cui.com
Additional Resources: Product Page
**date** 01/2017 **page** 5 of 7
## **SERIES: VFM-XX DESCRIPTION DC EMI FILTER** :
## INSERTION LOSS **INSERTION LOSS** (VFM-10A **(VFM-10A** ) **)**
## **COMMON MODE**
## **DIFFERENTIAL MODE**
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dB<br>**----- End of picture text -----**<br>
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KHz<br>**----- End of picture text -----**<br>
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50<br>-60 >ann<br>-10 N\ a<br>-80 \J<br>-90<br>100 1000 KHz<br>dB<br>**----- End of picture text -----**<br>
## **INSERTION LOSS (VFM-15C)**
## **COMMON MODE**
## **DIFFERENTIAL MODE**
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**----- Start of picture text -----**<br>
dB<br>**----- End of picture text -----**<br>
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**----- Start of picture text -----**<br>
dB<br>**----- End of picture text -----**<br>
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**----- Start of picture text -----**<br>
KHz<br>**----- End of picture text -----**<br>
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**----- Start of picture text -----**<br>
KHz<br>**----- End of picture text -----**<br>
## **INSERTION LOSS (VFM-20A)**
## **COMMON MODE**
## **DIFFERENTIAL MODE**
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**----- Start of picture text -----**<br>
0 H 0<br>-10 LT LTTE SE ETE ET -10 LT TT<br>-20 a a el -20 ee<br>-30 | oT TP PP PTET -30 LT ETE<br>-40 Gain -40 Gain<br>LT ETE ee TTE a ET TTT ET[- _]<br>-50 -50<br>-60 SHS -60<br>-70 LT HE C -70 i<br>-80 LT ETE ET -80 ee<br>-90 Lt ETELETTE EETET)ET -90 LLeeETT EEE<br>100 1000 10000 100000 ' 100 1000 10000 100000<br>KHz H KHz<br>dB dB<br>**----- End of picture text -----**<br>
20050 SW 112[th] Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2383 www.cui.com
Additional Resources: Product Page
**date** 01/2017 **page** 6 of 7
**==> picture [131 x 32] intentionally omitted <==**
## **SERIES: VFM-XX DESCRIPTION DC EMI FILTER** :
## **INSERTION LOSS (VFM-25C)**
## **COMMON MODE**
## **DIFFERENTIAL MODE**
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**----- Start of picture text -----**<br>
0 0<br>-10<br>-5<br>-20<br>-10 -30<br>-40<br>-15 Gain -50 Gain<br>-20 -60<br>-70<br>-25 -80<br>-30 -90<br>-100<br>-35 -110<br>100 1000 10000 100000 100 1000 10000 100000<br>KHz KHz<br>dB dB<br>**----- End of picture text -----**<br>
## **APPLICATION NOTES**
**The following application note shows EN55022 class B conducted emissions tests for the VFM-XX series EMI filters in series with a VHK or VHB series DC/DC converter and a purely resistive load. This information is for example only. Actual results may vary.**
**1) EMI Filtering - Connection Diagram**
|**Filter Model**<br>**(VFM-XX)**|**DC-DC Converter**<br>**Model (VHXXXW)**|**C1**|**C1**|**C1**|**C1**|**C2**|**C2**|**C2**|**C2**|**C2**|**CY1**|**CY1**|**CY2**|**CY3**|**CY4**|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|**VFM-10A**|VHB50W-Q24-S5|47 µF/100 V KY||||•••|||||•••||•••|•••|•••|
||VHB50W-Q48-S5|47 µF/100 V KY||||•••|||||•••||•••|•••|•••|
|**VFM-15C**|VHK200W|•••||||•••|||||•••||•••|•••|•••|
|**VFM-20A**|VHB150W-Q24-S5|47 µF/100 V KY||||220 µF/100 V KY|||||1000 pF / 2 KV||•••|1000 pF / 2<br>KV|560 pF/2 KV|
||VHB150W-Q48-S5|••||•||220 µF/100 V KY|||||1000 pF / 2 KV||•••|1000 pF / 2<br>KV|560 pF/2 KV|
|**VFM-25C**|VHK200W|••||•||||•••|||•••||•••|•••|•••|
||CY4<br>DC-D<br>POW<br>SUPP|||||||||CY2<br>CY1<br>SPECTRUM<br>ANALYZER||||||
||||DC-D<br>POW<br>SUPP|C<br>ER<br>LY||LIS||N||||SPECTRUM<br>ANALYZER||||
|||||||||||||||||
|||||||||||||||||
||||CY4||LO<br>VHBX<br>3<br>VFM|||C1||CY2<br>CY1||||||
|||||||||||||||||
|||||||VFM||-XX<br>|GND|||||||
|||||||||C2||||||||
|||||CY||||||||||||
|||||||VHBX||XW||||||||
|||||||||||||||||
|||||||||||||||||
|||||||LO||AD||||||||
20050 SW 112[th] Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2383 www.cui.com
Additional Resources: Product Page
**date** 01/2017 **page** 7 of 7
## **SERIES: VFM-XX**
## **DESCRIPTION DC EMI FILTER** :
## **2) Conducted Emission Measurement**
## **Filter Model: VFM-10A**
**DC-DC Converter Model: VHB50W-Q24-S5 Input Voltage: 12 Vdc**
**Filter Model: VFM-15C DC-DC Converter Model: VHK200W-Q48-S12** In **put Voltage: 48 Vdc**
**Filter Model: VFM-20A DC-DC Converter Model: VHB150W-Q24-S5 Input Voltage: 12 Vdc**
**Filter Model: VFM-25C DC-DC Converter Model: VHK200W-Q24-S12 Input Voltage: 24 Vdc**
20050 SW 112[th] Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2383 www.cui.com
Updated at April 27, 2026
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