VFM-10A

Additional Resources: Product Page date 06/14/2022 page 1 of 9 SERIES: VFM-XX │ DESCRIPTION: DC EMI FILTER FEATURES • compact size • suitable for use with wide range of dc-dc converters • reduces common and differential mode noise MODEL input voltage input surge voltage1 input current isolation voltage2 range (Vdc) nominal (Vdc) max (A) min (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 Note: 1. For 100 ms. 2. Input to ground, output to ground. PART NUMBER KEY VFM - XX X Input Current cui.com Mounting Style: A = board mount C = chassis mount Additional Resources: Product Page CUI Inc │ SERIES: VFM-XX │ DESCRIPTION: DC EMI FILTER date 06/14/2022 │ page 2 of 9 SPECIFICATIONS parameter conditions/description isolation voltage input to ground, output to ground 1,500 min isolation resistance input to ground, output to ground 10 dc resistance total for two legs nom max units Vdc W 7 16 mW ENVIRONMENTAL parameter conditions/description min operating temperature nom max units 100 °C 100 °C 100 °C max units -40 case temperature storage temperature cooling -40 natural convection MECHANICAL parameter conditions/description dimensions VFM-10A: VFM-15C: VFM-20A: VFM-25C: case material VFM-10A & VFM-20A: black plastic VFM-15C & VFM-25C: black coated steel 2.00 4.06 2.00 4.06 x x x x 1.00 3.11 1.60 3.11 x x x x min 0.46 0.89 0.50 0.89 typ [50.8 x 25.4 x 11.7 mm] [103.2 x 79 x 22.7 mm] [50.8 x 40.6 x 12.7 mm] [103.2 x 79 x 22.7 mm] inch inch inch inch MECHANICAL DRAWING VFM-10A units: inch [mm] tolerance: inches: x.xx = ±0.02, x.xxx = ±0.010 mm: x.x = ±0.5, x.xx = ±0.25 pin size: 0.04 [1.02] 2.00 [50.8] PIN CONNECTIONS PIN Function 1 +Vin 2 -Vin 3 +Vout 4 -Vout 5 GND 0.475 [12.06] 0.15 [3.8] 1.225 [31.12] 2 5 0.12 [3.2] 4 0.750 [19.05] 1 BOTTOM VIEW 3 1.00 [25.4] 0.040 [1.02] 0.22 [5.6] min. SIDE VIEW cui.com 0.46 [11.7] NOTE:Pin Size All Dimensions Tolerances: Inc Mi Additional Resources: Product Page CUI Inc │ SERIES: VFM-XX │ DESCRIPTION: DC EMI FILTER date 06/14/2022 │ page 3 of 9 MECHANICAL DRAWING (CONTINUED) VFM-20A units: inch [mm] tolerance: inches: x.xx = ±0.02, x.xxx = ±0.010 mm: x.x = ±0.5, x.xx = ±0.25 pin size: 0.04 [1.02] 2.00 [50.8] 0.700 [17.78] PIN CONNECTIONS 4 -Vin 5 +Vout 6 +Vout 7 -Vout 8 -Vout 9 GND 4 3 9 2 8 7 6 1 5 BOTTOM VIEW 0.25 [6.3] -Vin 0.200 [5.08] 3 0.200 [5.08] +Vin 0.200 [5.08] 2 0.15 [3.8] 1.000 [25.40] 0.200 [5.08] +Vin 0.200 [5.08] 1 0.150 [3.81] 0.200 [5.08] Function 1.60 [40.6] PIN 0.15 [3.8] 0.040 [1.02] 0.22 [5.6] min. SIDE VIEW cui.com 0.50 [12.7] DIM NO All Tole Additional Resources: Product Page CUI Inc │ SERIES: VFM-XX │ DESCRIPTION: DC EMI FILTER date 06/14/2022 │ page 4 of 9 MECHANICAL DRAWING (CONTINUED) 88 [R 2. 25 ] 2.92 [74.2] 0.89 [22.7] CONVERTER -Vin +Vin 3.70 [94.2] 1.51 [38.5] POWER +Vin -Vin GND 3.15 [80.0] cui.com 2.16 [55.0] 0.03 [1.0] .0 3.11 [79.0] R0 2.79 [71.0] 4- 4-0.47 [12.0] VFM-15C & VFM-25C Additional Resources: Product Page CUI Inc │ SERIES: VFM-XX │ DESCRIPTION: DC EMI FILTER date 06/14/2022 │ page 5 of 9 INTERNAL SCHEMATICS Figure 1 VFM-10A Figure 2 VFM-20A Figure 3 VFM-15C & VFM-25C cui.com Additional Resources: CUI Inc │ SERIES: VFM-XX │ DESCRIPTION: DC EMI FILTER Product Page date 06/14/2022 │ page 6 of 9 INTERNAL SCHEMATICS cui.com Additional Resources: Product Page CUI Inc │ SERIES: VFM-XX │ DESCRIPTION: DC EMI FILTER date 06/14/2022 │ page 7 of 9 APPLICATION CIRCUIT The following application note shows EN 55022 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 (VFM-XX) VFM-10A VFM-15C DC-DC Converter Model (VHXXXW) C1 C2 CY1 CY2 CY3 CY4 VHB50W-Q24-S5 47 µF/100 V KY ••• ••• ••• ••• ••• VHB50W-Q48-S5 47 µF/100 V KY ••• ••• ••• ••• ••• VHK200W ••• ••• ••• ••• ••• ••• 560 pF/2 KV VHB150W-Q24-S5 47 µF/100 V KY 220 µF/100 V KY 1000 pF / 2 KV ••• 1000 pF / 2 KV VHB150W-Q48-S5 ••• 220 µF/100 V KY 1000 pF / 2 KV ••• 1000 pF / 2 KV 560 pF/2 KV VHK200W ••• ••• ••• ••• ••• ••• VFM-20A VFM-25C Figure 4 cui.com Additional Resources: CUI Inc │ SERIES: VFM-XX │ DESCRIPTION: DC EMI FILTER Product Page date 06/14/2022 │ page 8 of 9 2) Conducted Emission Measurement cui.com Additional Resources: Product Page CUI Inc │ SERIES: VFM-XX │ DESCRIPTION: DC EMI FILTER date 06/14/2022 │ page 9 of 9 REVISION HISTORY rev. description date 1.0 initial release 01/01/2017 1.01 specification updated to a new CUI template 01/17/2022 1.02 pin connection table updated 05/11/2022 pin size updated in the pin connection table 06/14/2022 1.03 The revision history provided is for informational purposes only and is believed to be accurate. Headquarters 20050 SW 112th Ave. Tualatin, OR 97062 800.275.4899 Fax 503.612.2383 cui.com techsupport@cui.com CUI offers a two (2) year limited warranty. Complete warranty information is listed on our website. CUI reserves the right to make changes to the product at any time without notice. Information provided by CUI is believed to be accurate and reliable. However, no responsibility is assumed by CUI for its use, nor for any infringements of patents or other rights of third parties which may result from its use. CUI products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.