Hammond 161D120 1VA 120V Center-Tapped PCB Power Transformer

The 161D120 is a 1 VA low voltage power transformer for printed circuit board mounting, built with a single 115V primary rated for 60 Hz only. Its secondary delivers 120V centre-tapped at 8mA when the windings are used in series, or 60V at 16mA when they are connected in parallel. It suits OEM engineers and designers who need a board-level 120V C.T. or 60V AC source from a 115V line.

Construction follows the 160-161 Series design: a vertical mount, split bobbin transformer; 1 VA models in this series are concentric wound. Low primary-to-secondary coupling means no electrostatic shield is required. Insulation is Class B (130 degrees C) with a Hipot rating of 2,000V RMS.

In the series mechanical table for the 1 VA size (161 Series), overall dimensions are A 1.00 in, B 1.38 in and C 0.83 in, with D (pin) 0.02 x 0.04 in, E 1.20 in, G 0.25 in. The shipping weight of this part is 0.12 lbs (0.05 kg).

The 161D120 is CSA certified (File # LR3902) and UL recognized (File #E207860), and it is listed as RoHS and REACH compliant. If the design must also run from 230V or 50 Hz supplies, the dual primary 115/230V counterpart in the ordering table is 160D120.