Hammond 166E20 3VA 20V Center-Tapped Transformer, 150mA

The 166E20 is a 3 VA low-voltage transformer converting a 115 V, 60 Hz single primary into 20 V C.T. at 0.15 A. It offers 50 percent more secondary current than the 0.1 A 166D20 in the same overall size.

As a 166 Series part it uses an economical single-primary design, an open-style channel bracket for two-hole chassis mounting, and minimum 6 in long leads. The dual bobbin construction means no electrostatic shield is required. Windings use Class B insulation (130 degrees C) for extra protection, although the design is UL listed as a Class A (105 degrees C) design, and each unit is Hi-Pot tested at 2,000 V RMS. The 166E20 drawing shows black primary leads and green secondary leads with a green/yellow lead on the secondary side.

Overall dimensions are 2.06 in (52.3 mm) by 1.38 in (35.1 mm) by 1.19 in (30.2 mm), with 1.75 in (44.5 mm) hole-to-hole mounting and 0.187 in (4.7 mm) holes. It ships at 0.3 lbs (0.14 kg).

• Power rating: 3 VA
• Primary: 115 V, 60 Hz
• Secondary: 20 C.T. (RMS VAC) at 0.15 A
• Shipping weight: 0.3 lbs (0.14 kg)

The 166 Series is UL listed and CSA certified, and the 166E20 is listed as RoHS and REACH compliant. Identifiers include UPC 623980229409 and UNSPSC 39121301.