B32911 Datasheet, PDF (12/19 Pages) TDK Electronics – Film Capacitors EMI Suppression Capacitors

B32911 ... B32916
X1 / 330 V AC
Application note for the different possible X1 / X2 positions
In series with the powerline
(i.e. capacitive power supply)
Typical Applications:
Power meters
ECUs for white goods and household
appliances
Different sensor applications
Severe ambient conditions
In parallel with the powerline
Typical Applications:
Standard X2 are used parallel over the mains for
reducing electromagnetic interferences coming
from the grid. For such purposes they must meet
the applicable EMC directives and standards.
Basic circuit
Basic circuit
Required features
High capacitance stability over the lifetime
Narrow tolerances for a controlled current
supply
Recommended EPCOS product series
B3293* (305 V AC) heavy duty with
EN approval for X2 (UL Q1/2010)
B3265* MKP series
standard MKP capacitor without safety
approvals
B3267*L MKP series
standard MKP capacitor without safety
approvals
Required features
Standard safety approvals
(ENEC, UL, CSA, CQC)
High pulse load capability
Withstand surge voltages
Recommended EPCOS product series
B3292*C/D (305 V AC)
standard series, approved as X2
B3291* (330 V AC), approved as X1
Please read Cautions and warnings and
Important notes at the end of this document.
Page 12 of 19