Hammond PWDF13050 7.0 VCT 85A YU-148 Filament Transformer

PWDF13050 is a high-current filament transformer listed for the YU-148, delivering a 7.0 volt center-tapped (VCT) secondary rated 85A CCS. It belongs to Hammond's PWDAHL Series, a catalogue of transformers and chokes taken directly from the Peter W. Dahl files for amateur radio products, and suits amplifier builders and restorers who need a heavy filament supply.

The primary is 0-220-240 VAC, 60 Hz, single phase. Because this part is listed for 60 Hz, buyers outside North America should note the series guidance that parts needing 50 Hz operation should be marked 50/60 Hz.

The transformer is wound on an EI-162 x 3 core and listed as Style 2 on the series style sheet. Approximate weight is 21 lbs, and the shipping weight is 21 lbs (9.53 kg), so plan chassis mounting accordingly. PWDF13050 is REACH compliant and RoHS compliant.

PWDAHL Series units are usually built to order one at a time, and Hammond advises confirming availability by phone or e-mail. For purchasing records the part carries UPC 623980240367 and UNSPSC 39121301.

With a single 85A center-tapped winding and a 21 lb build, PWDF13050 is a substantial component; allow for its mass and the high secondary current when planning mounting, wiring and conductor sizing around the YU-148 application.