TDK Electronics · TDK Europe

Leaded Transient Voltage / RFI Suppressors

Super High Capacitance Varistor SHCV

 Intro Pic

For most RFI suppression applications, the capacitance of multilayer varistors (MLVs, transient voltage suppressors) alone – typically in the range of a few nF – is too low. TDK therefore offers SHCVs that combine transient protection and RFI suppression in a very compact form. These components consist of a multilayer varistor (MLV, chip varistor) connected in parallel with a multilayer ceramic capacitor (MLCC). SHCVs are particularly useful for suppressing RFI from small motors in windshield wipers, window regulators, memory seats, central locking systems, etc. 


Features & Benefits

  • EMI/RFI suppression and transient overvoltage protection integrated into a single component
  • Suppression of transients, caused by the sudden interruption of currents
  • Protection against electrical transients in automotive battery lines (according to ISO 7637-2 and ISO 16750-2)
  • Maximum surge current Isurge,max (8/20 µs) up to 1200 A
  • Capacitance 220 nF to 4.7 µF  
  • Load dump (WLD, 10 pulses up to 12 J) and jump start (Vjump, max, 5 min = 26 V) capability
  • Qualification based on AEC-Q200 requirements
  • PSpice simulation models available 
  • Fits into the limited space of electric motor brush holders
  • In combination with other components, such as chokes, capacitors, and current limiters, SHCVs contribute to highly effective EMI filtering and transient surge protection.
  • The flexible connecting wires enable easy installation near the brush contacts, even in challenging brush holder geometries and limited spaces. 

Diagrams

 Diagramm 1 Pic

Example of RFI supression in small motors with chokes and SHCV's

 Diagramm 2 Pic

Block diagram SHCV

Applications

Typical applications include RFI noise suppression and transient overvoltage protection in DC lines of small motors for windshield wipers, window regulators, mirrors, central locking systems, electric seat adjustments, sunroofs, etc. 

 Automotive
 Brush Motors
 Industrial

Get data sheets and search

PDF Features/Series Max. operating voltage (V AC) Max. operating voltage (V DC) Type
SHCV 14 - 35 16 - 45 SR1K20M105X - SR6K35M105X

In order to download up to 20 files together as zip, please mark them with the check box. To start the download, please click the Download button at the end of the list.

  • Application notes
  • Cautions and warnings
  • Design notes
  • General technical information
  • Protection standards
  • Quality and environment
  • Reliability
  • Selection procedure
  • Selector guide
  • Soldering directions
  • Symbols and terms
  • Taping and packing

In order to download up to 20 files together as zip, please mark them with the check box. To start the download, please click the Download button at the end of the list.



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