Sometimes you may find some blemishes on the body of Pulse Electronics’s PA5140.XXXNL series Common Mode Chokes.
For example, part number PA5140.205NLT.
For reference, check the photo below:
Pulse Electronics confirms that this is acceptable and a cosmetic issue only. The areas with the arrows are due to the epoxy applied on the parts to hold the cores together, and to hold the core and bobbin in place. There is no effect on the electricals of the device.
Applicable part numbers
553-PA5140.205NLTTR-ND, 553-PA5140.205NLTCT-ND, 553-PA5140.205NLTDKR-ND
553-PA5140.305NLTTR-ND, 553-PA5140.305NLTCT-ND, 553-PA5140.305NLTDKR-ND
553-PA5140.405NLTTR-ND, 553-PA5140.405NLTCT-ND, 553-PA5140.405NLTDKR-ND
553-PA5140.105NLTTR-ND, 553-PA5140.105NLTCT-ND, 553-PA5140.105NLTDKR-ND
PA5140.205NLT
PA5140.305NLT
PA5140.405NLT
PA5140.105NLT