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Create Free Business AccountThe 161F120 is a 4.4 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 35mA when the windings are used in series, or 60V at 70mA 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; the 4.4 VA size is non-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 4.4 VA size (161 Series), overall dimensions are A 1.69 in, B 1.25 in and C 1.45 in, with D (pin) 0.02 x 0.04 in, E 1.10 in, G 0.40 in, F 0.03 x 0.12 in, H 1.67 in and J 0.44 in. The shipping weight of this part is 0.33 lbs (0.15 kg).
The 161F120 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 160F120.
| Series | 160-161 Series (161 = single primary 115V) |
| Mounting | P.C. board mount, vertical |
| Product Type | Transformer, low voltage PCB mount |
| Short Description | POWER TX 4.4VA 115V |
| Dual Primary (115/230V) Equivalent | 160F120 |
| A | 1.69 in |
| B | 1.25 in |
| C | 1.45 in |
| E | 1.10 in |
| G | 0.40 in |
| H | 1.67 in |
| J | 0.44 in |
| D Width | 0.04 in |
| F Width | 0.12 in |
| D Thickness | 0.02 in |
| F Thickness | 0.03 in |
| Frequency | 60 Hz only |
| Primary Voltage | 115V (single primary) |
| Power Rating (VA) | 4.4 |
| Secondary (RMS) Series | 120V C.T. @ 35ma |
| Secondary (RMS) Parallel | 60V @ 70ma |
| Hipot (Series Specification) | 2,000V RMS |
| UPC | 623980210612 |
| UNSPSC | 39121301 |
| Part Number | 161F120 |
| Shipping Weight | 0.33 lbs (0.15 kg) |
| Bobbin | Split bobbin, vertical mount |
| Winding | Non-concentric wound |
| Shielding | Low primary to secondary coupling - no electrostatic shield required |
| Insulation Class | Class B - 130 degrees C |
| UL | Recognized, File #E207860 |
| CSA | Certified, File # LR3902 |
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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The secondary is rated 120V C.T. @ 35ma with the windings in series, or 60V @ 70ma with them in parallel (RMS values).
No. The 161F120 has a single 115V primary rated for 60 Hz only. The dual primary 115/230V, 50/60 Hz version listed in the ordering table is 160F120.
No. The series uses low primary to secondary coupling, so no electrostatic shield is required.
It is CSA certified (File # LR3902) and UL recognized (File #E207860), and is listed as RoHS and REACH compliant.
The series table for the 4.4 VA 161 size lists A 1.69 in, B 1.25 in and C 1.45 in; shipping weight is 0.33 lbs (0.15 kg).
Class B insulation, rated 130 degrees C, with a Hipot of 2,000V RMS.
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