Rev. C 03/22

23

PFS5173-5178/5274

www.power.com

PI-9436-092421

InSOP-T28F

A. Power Integrations Registered Trademark

B. Assembly Date Code (last two digits of year (YY) followed by 2-digit work

week (WW)), and Supply Chain Flow (Foundry / Assembly Location (X))

C. Product Identification (Part #/Package Type)

D. Lot Identification Code

PACKAGE MARKING

A

B

C

D

1531

PFS5178F

004D842A1