FAQ

1

Electrical Characteristics

Q.
What is differential insertion loss?
  • Signal Line Common Mode Chokes/Filters
Q.
What is common mode attenuation?
  • Signal Line Common Mode Chokes/Filters
Q.
What is Scd21?
  • Signal Line Common Mode Chokes/Filters
Q.
Can common impedance be considered impedance that affects only AC (resonant signals)?
  • Signal Line Common Mode Chokes/Filters
Q.
Is it okay to use a common mode filter / choke if a current larger than its rated current is applied momentarily?
  • Signal Line Common Mode Chokes/Filters
Q.
What is the difference between common mode impedance, differential mode impedance and characteristic impedance?
  • Signal Line Common Mode Chokes/Filters
Q.
What is the cutoff frequency?
  • Signal Line Common Mode Chokes/Filters
Q.
Is it possible to use a product with a rated voltage of 250V with only 100V?
  • Power Line EMC Filters
Q.
Up to what voltage is applicable for a product with AC.250V rated voltage?
  • Power Line EMC Filters
Q.
Up to what value of current is applicable in relation to the rated input current?
  • Power Line EMC Filters
Q.
What is the criterion for selecting the rated current?
  • Power Line EMC Filters
Q.
Are products with a larger input current better?
  • Power Line EMC Filters
Q.
Is it possible to use the products with AC.400Hz?
  • Power Line EMC Filters
Q.
What is the difference in attenuation characteristics between common mode and differential mode?
  • Power Line EMC Filters
Q.
Please explain how to read the attenuation-frequency characteristics graph.
  • Power Line EMC Filters
Q.
What is the difference between general high-frequency noise filters and pulse noise filters?
  • Power Line EMC Filters
Q.
Do the products meet the EN/IEC61000-4-5 lightning surge test?
  • Power Line EMC Filters
Q.
What are the recommended varistor and arrester?
  • Power Line EMC Filters
Q.
The required performance cannot be attained with one unit. Can multiple units be used in serial connection?
  • Power Line EMC Filters
Q.
Is it possible to use multiple filter units in a parallel connection on the load side?
  • Power Line EMC Filters
Q.
Is it possible to use a filter for AC power supply with DC input?
  • Power Line EMC Filters
Q.
What should be done with the ground terminal in use with DC input?
  • Power Line EMC Filters
Q.
What are the recommended products for use with DC input?
  • Power Line EMC Filters
Q.
Please explain what “LINE/LOAD” on the product label means.
  • Power Line EMC Filters
Q.
Is it possible to use products with the input/output side changed?
  • Power Line EMC Filters
Q.
What are the effects of use with the input/output side changed?
  • Power Line EMC Filters
Q.
What is the allowable level of input inrush current (surge current)?
  • Power Line EMC Filters
Q.
What is the allowable level of DC-input inrush current?
  • Power Line EMC Filters
Q.
Is it possible to use the products in a condition beyond the operating temperature range?
  • Power Line EMC Filters
Q.
Is it possible to use the products in a condition beyond the operating temperature range, if the current flow is kept low?
  • Power Line EMC Filters