Hammond PWDI13251 Collins 516F-2 L3 Filter Choke, 1.0 HY 180 mA

The PWDI13251 is the L3 DC filter choke for the Collins 516F-2 power supply, taken from the Peter W. Dahl files that form the PWDAHL Series of magnetics for amateur radio products. It is aimed at Collins owners and service technicians who need a replacement for the original L3 choke.

The choke is rated 1.0 HY at 180 mA DC. It is built on a compact EI-075 x 1 lamination core in Style 3 of the series style sheet, and the ordering table lists an approximate weight of 1 lb, making it one of the smaller units in the Dahl listing.

Only the series ordering table data is published for this part; the manufacturer's part page does not list further attributes such as a UPC or compliance marks for PWDI13251, so those details should be confirmed directly if required for your records.

Dahl-series transformers and chokes are usually built to order one at a time, and parts already built are shown with Hammond part numbers. Many of these designs are decades old, so the series advises confirming availability by phone or e-mail before planning a repair. Stock units can usually be shipped next business day.