SAFETY and EMC
Input Fusing and Safety Considerations
The QBR series converters have no internal fuse. In order to achieve maximum safety and system protection, always use an input line fuse. We
recommended a time delay fuse 2A. It is recommended that the circuit have a transient voltage suppressor diode (TVS) across the input terminal to
protect the unit against surge or spike voltage and input reverse voltage (as shown).
EMC Considerations
(1) EMI Test standard: EN55022 Class B Conducted Emission
Test Condition: Input Voltage: Nominal, Output Load: Full Load
Model No.
C1
C2
C3
C4
L1
L2
QBR101S5-12
QBR101S12-5
220µF/200V YXF 220µF/200V YXF
220µF/200V YXF 220µF/200V YXF
220µF/200V YXF 220µF/200VYXF
220µF/200V YXF 220µF/200V YXF
220µF/200V YXF 220µF/200V YXF
220µF/200V YXF 220µF/200V YXF
2200pF
2200pF
2200pF
2200pF
2200pF
2200pF
2200pF
2200pF
2200pF
2200pF
2200pF
2200pF
38uH
38uH
1mH
1mH
1mH
1mH
1mH
1mH
QBR101S15-4
38uH
QBR101S24-2.5
QBR101S28-2.14
QBR101S48-1.25
Short Circuit
Short Circuit
Short Circuit
Note: C1, C2 Aluminum Capacitors and C3, C4 Ceramic Capacitors
September 18 2017 B.03
Page 12 of 15
DATEL [ DATEL, Inc. ]
