Hammond 160D28 1 VA 28V C.T. PCB Transformer, 115/230V Primary
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Create Free Business AccountKey Features
- 1 VA low voltage PC board mount power transformer
- Secondary: 28V C.T. @ 30ma series or 14V @ 60ma parallel
- Universal dual primary 115/230V, 50/60 Hz
- Vertical mount, split bobbin design, concentric wound
- Low primary to secondary coupling - no electrostatic shield required
- Hipot 2,000V RMS; Class B insulation (130 degrees C)
- CSA certified (LR3902), UL recognized (E207860), RoHS and REACH compliant
- Single 115V, 60 Hz primary equivalent: 161D28
The 160D28 is a compact 1 VA low voltage PC board mount power transformer for circuit designers who need a small isolated AC supply on the board. It uses the universal dual 115/230V primary for 50/60 Hz operation, so the same part can be wired for either line voltage.
The secondary is rated 28V C.T. @ 30ma with the windings in series, giving a 28V centre-tapped output, or 14V @ 60ma with the two halves in parallel, doubling the available current to 60ma at 14V. Pick the 160D28 when your circuit needs a 14V or 28V C.T. AC rail at these current levels.
Construction is a vertical mount, split bobbin design, and the 1 VA size is concentric wound. Low primary to secondary coupling means no electrostatic shield is required. Insulation is Class B (130 degrees C) and the series is hipot tested to 2,000V RMS.
The 160 Series mechanical table lists this 1 VA size with overall dimensions of A 1.00", B 1.38" and C 0.83", with 0.02" x 0.04" pins (D), E 1.20" and G 0.20" (inch). Shipping weight is 0.13 lbs (0.06 kg).
The 160-161 Series is CSA certified (File # LR3902) and UL recognized (File #E207860), and the 160D28 is RoHS and REACH compliant. If you only need a 115V, 60 Hz primary, the economical single-primary equivalent with the same secondary rating is the 161D28.
Ideal For
- 14V or 28V C.T. AC supply on a PC board
- Equipment sold for both 115V and 230V, 50/60 Hz markets
- Low-power isolated supplies in OEM electronics
- Vertical PCB mounting where board space is limited
Overview
| Series | 160-161 Series (160 Series, dual primary) |
| Power Rating | 1 VA |
| Product Type | Transformer, low voltage PCB mount |
| Short Description | POWER TX 1VA 115/230V |
| Single Primary (115V) Equivalent | 161D28 |
Dimensions
| Dimension A (Series Table) | 1.00 in |
| Dimension B (Series Table) | 1.38 in |
| Dimension C (Series Table) | 0.83 in |
| Dimension E (Series Table) | 1.20 in |
| Dimension G (Series Table) | 0.20 in |
| Dimension D Width (Series Table) | 0.04 in |
| Dimension D Thickness (Series Table) | 0.02 in |
Electrical
| Hipot | 2,000V RMS |
| Primary | Dual primary 115/230V, 50/60 Hz |
| Secondary (RMS) Series | 28V C.T. @ 30ma |
| Secondary (RMS) Parallel | 14V @ 60ma |
| Primary To Secondary Coupling | Low - no electrostatic shield required |
Identifiers
| UPC | 623980300573 |
| UNSPSC | 39121301 |
Packaging & Shipping
| Shipping Weight | 0.13 lbs (0.06 kg) |
Construction & Finish
| Bobbin | Split bobbin design |
| Winding | Concentric wound |
| Mounting | P.C. board mount, vertical |
| Insulation Class | Class B - 130 degrees C |
Compliance & Certifications
| UL | UL recognized (File #E207860) |
| CSA | CSA certified (File # LR3902) |
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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Frequently Asked Questions
What secondary voltage does the 160D28 provide?▾
Wired in series the secondary gives 28V C.T. @ 30ma; wired in parallel it gives 14V @ 60ma.
Can the 160D28 run on 230V as well as 115V?▾
Yes. It has the universal dual 115/230V primary for 50/60 Hz operation.
Is there a 115V-only version of the 160D28?▾
Yes. The 161D28 is the single primary 115V, 60 Hz only equivalent with the same 1 VA size and secondary rating.
What are the dimensions of the 160D28?▾
The 160 Series mechanical table lists the 1 VA size as A 1.00", B 1.38", C 0.83", D Thickness 0.02", D Width 0.04", E 1.20", G 0.20". Values are in inches.
Does it need an electrostatic shield?▾
No. The series has low primary to secondary coupling, so no electrostatic shield is required.
What approvals does it carry?▾
The series is CSA certified (File # LR3902) and UL recognized (File #E207860). The 160D28 is RoHS and REACH compliant.
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