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date 01/18/2022

│ page 9 of 13

CUI Inc

│ SERIES: PBO-1 │ DESCRIPTION: AC-DC POWER SUPPLY

Table 3

Circuit 3

Application enviromental

Ambient temperature range

Immunity Class

Emissions Class

Indoor civil / general

-40°C ~ 55°C

Class III

Class B

Component

Recommended value

R1

12Ω/3W

CY1 (CY2)

1.0nF/400Vac

LCM

3.5mH

LDM

0.33mH

CX

0.1µF/310Vac

CY3, CY4

0.56nF/400Vac

FUSE (required)

1A/300V, slow-blow

Note: In the home appliance application enviroment, the two Y capacitors of the primary and secondary need to be externally connected (CY1/CY2, value at 2.2nF/400Vac) which can

meet the EN60335 certification. In other industries, only one Y capacitor is required.

EMC RECOMMENDED CIRCUIT (CONTINUED)

Additional Resources: Product Page | 3D Model | PCB Footprint