Datasheet
2-line filters  B84111A 
SIFI-A for normal insertion loss 
Power line filters for 1-phase systems 
Rated voltage 250 V DC/AC, 50/60 Hz 
Rated current 1 to 20 A 
Alternative version 
■  Series B84111F (SIFI-F) 
offers a low-cost solution 
Construction 
■  2-line filters 
■  Metal case 
■  Polyurethane potting (UL 94 V-0) 
Features 
■  Compact design 
■  Optimized leakage current 
■  Cost-optimized construction 
■  Also for assembly on top-hat rails 
■  ENEC10, UL and CSA approval 
Applications 
■  Switch-mode power supplies in 
–  industrial electronics 
–  telecommunications 
–  data systems 
–  medical equipment 
■  DC applications 
Case styles and terminal styles 
Case style A  Tab connectors on face ends, lateral fixing lugs. 
Particularly suitable for mounting on a shielding wall. 
Case style B  Tab connectors on face ends, fixing lugs on face ends. 
Case style K  IEC connector as per IEC 60320 C 14 on line side, 
tab connectors on load side, mounting holes with metric thread. 
Case style L  Litz wires on face ends, fixing lugs on face ends 
Marking 
Marking on component: 
Manufacturer’s logo, ordering code, 
rated voltage, rated current, rated temperature, 
climatic category, date code 
Minimum marking on packaging: 
Manufacturer’s logo, ordering code 
Please read Cautions and warnings and 
Important notes at the end of this document. 
01/06 2 









