Hammond 187A12 2.5VA 12.6V C.T. 115VAC Chassis Mount Transformer

The 187A12 is a 2.5 VA open-style, chassis mount power transformer from the 187 Series with a single 115 VAC primary for 50/60 Hz supplies. The center-tapped secondary delivers 12.6V C.T. RMS at 0.19 A. It sits in the smallest frame of the 186-187 range, with ratings from 2.34 VA to 2.5 VA across its secondary options. It is aimed at OEM engineers, technicians and equipment builders who need a small low voltage AC source mounted directly to a chassis.

Construction follows the 186-187 Series design: an economical open style, channel frame for chassis mounting, and split bobbin construction that eliminates the need for an electrostatic shield. Insulation material is Class B (130 C), and the design keeps temperature rise from exceeding Class A for longer life. Each unit is hi-pot tested to 2 KV RMS.

Overall length is 2.06 in (52 mm), height is 1.18 in (30 mm) and depth is 1.06 in (27 mm) not including terminals, or 1.44 in (37 mm) measured to the terminals. Mounting centers are 1.75 in (44 mm). Shipping weight is 0.29 lbs (0.13 kg).

Wiring is by combination solder or quick connect terminals. The series ordering table lists no dual 115/230 VAC primary version for this A-frame rating. The series is UL listed (# E207860) Type 3AH and CSA certified, and this part is listed as RoHS and REACH compliant.