Hammond 164D120 1.1VA 120V Center-Tapped PCB Transformer, 115V Primary

The 164D120 is a 1.1VA low-voltage power transformer designed to mount directly on a printed circuit board. It has a single 115V primary rated for 50/60 Hz operation and a low-profile, split bobbin construction, making it a fit for OEM engineers and board designers who need a 120V centre-tapped secondary in a compact footprint. This is the highest-voltage option in the range: 120V C.T. at 0.01A in series, or 60V at 0.02A in parallel.

Construction uses dual secondary windings, non-concentrically wound, which gives low primary-to-secondary coupling without the need for an electrostatic shield. The insulation system is Class B, rated 130 degrees C, with a 2,500V RMS hipot. All windings are intended to be used together in either the series or the parallel connection.

The D-size body measures 1.38 in long by 1.13 in wide by 15/16 in high and weighs 0.17 lb per the series specification sheet. At 1.1VA it needs no mounting hardware: the unit is held by its P.C. board pins, which use industry-standard pin spacing.

The transformer is c UL us recognized and listed as RoHS and REACH compliant. Where a design must run from 115V or 230V, the dual-primary equivalent in the same series is 162D120.