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Product Detailed Parameters
- Description：PWR XFMR LAMINATED 5VA TH
- Series：One-4-All™
- Mfr：Signal Transformer
- Package：Bulk
- Type：Laminated Core
- Voltage - Primary：115V, 230V
- Voltage - Secondary (Full Load)：Parallel 14V, Series 28V
- Current - Output (Max)：Parallel 360mA, Series 180mA
- Primary Winding(s)：Dual
- Secondary Winding(s)：Dual
- Center Tap：No
- Power - Max：5VA
- Mounting Type：Through Hole
- Termination Style：PC Pin
- Size / Dimension：41.30mm L x 36.50mm W
- Height - Seated (Max)：34.90mm
- Voltage - Isolation：4000Vrms
- Weight：0.37 lb (167.83 g)
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Overview
The Signal Transformer 14A-5.0R-28 is a laminated core power transformer rated at 5VA, designed for through-hole mounting. It features dual primary windings supporting 115V and 230V inputs in parallel configuration. The secondary side provides dual outputs: 14V at 360mA in parallel mode, or 28V at 180mA in series mode. Key electrical specifications include a 4000Vrms isolation voltage and operation at 50/60 Hz frequencies. Physical dimensions are 41.3mm length, 36.5mm width, and 34.9mm height.
Feature Summary
- Laminated core construction for efficient magnetic flux transfer
- Dual primary winding capability for flexible input voltage selection
- Configurable secondary output allowing parallel or series connection modes
- High isolation voltage rating ensuring safety compliance
Applications
- General purpose AC to DC power supply circuits
- Industrial control panel power distribution
- Consumer electronics requiring isolated low-voltage DC
- Medical equipment power stages
Procurement Notes
Verify the specific manufacturer part number against official datasheets to ensure compatibility with design requirements. Confirm that the laminated core type meets thermal and mechanical constraints. Check RoHS compliance status if environmental regulations apply. Ensure the through-hole footprint matches the PCB layout. Validate voltage ratings against the intended operating environment.
Selection Notes
Select this component when a 5VA capacity is sufficient for the load. Choose this model for applications requiring configurable secondary voltages of 14V or 28V. Consider the physical dimensions for enclosure space limitations. Verify that the 4000Vrms isolation meets safety standards. Ensure the through-hole installation method aligns with the manufacturing process.
Part Context
This transformer belongs to the 14A series from Signal Transformer, focusing on board-mount power solutions. It serves as a standard component for converting mains voltage to lower AC levels for rectification. The series offers various tap configurations to suit different regional input standards and output requirements.
Replacement Considerations
The 183F28 by Hammond Manufacturing is a confirmed substitute with identical 5VA rating and pinout compatibility.
