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DPC-28-40
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Product Detailed Parameters
- Description：PWR XFMR LAMINATED 1.2VA TH
- Series：DPC
- Mfr：Signal Transformer
- Package：Box
- Type：Laminated Core
- Voltage - Primary：115V, 230V
- Voltage - Secondary (Full Load)：Parallel 14V, Series 28V
- Current - Output (Max)：Parallel 80mA, Series 40mA
- Primary Winding(s)：Dual
- Secondary Winding(s)：Dual
- Center Tap：No
- Power - Max：1.2VA
- Mounting Type：Through Hole
- Termination Style：PC Pin
- Size / Dimension：34.90mm L x 28.60mm W
- Height - Seated (Max)：30.15mm
- Voltage - Isolation：1500Vrms
- Weight：0.188 lb (85.28 g)
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Overview
The DPC-28-40 is a laminated core power transformer from the PC/DPC series by Signal Transformer. It features dual primary windings rated for 115V and 230V operation in parallel configuration, supporting frequencies between 50Hz and 500Hz. The secondary output provides 14V at 80mA or 28V center-tapped at 40mA. With a maximum power rating of 1.2VA, it utilizes through-hole mounting with PC pin termination. The unit offers a dielectric strength of 1500Vrms isolation and measures 25.40mm in length.
Feature Summary
- Dual primary winding design supports flexible input voltage selection
- Center-tapped secondary output enables versatile rectification configurations
- Laminated core construction ensures stable performance across frequency ranges
Applications
- Low power electronic equipment requiring isolated AC/DC conversion
- Control circuits utilizing center-tapped transformer configurations
- Industrial instrumentation with standard line voltage inputs
Procurement Notes
Verify that the specific application requires the 1.2VA power rating and 1500Vrms isolation level. Confirm that the physical dimensions and through-hole pin spacing match the PCB layout constraints. Ensure the operating frequency range aligns with the system's signal requirements. Check for compliance with relevant environmental standards if applicable to the final product deployment.
Selection Notes
Select this component when a compact, low-power solution is needed for standard line voltages. Consider the DPC-28-40 for designs requiring a center-tapped secondary for full-wave rectification. Evaluate the thermal management capabilities based on the 1.2VA dissipation. Compare against higher VA ratings if future load expansion is anticipated within the same form factor.
Part Context
This model belongs to the PC/DPC series of miniature low-power transformers designed for printed circuit board mounting. These components are engineered for applications where space efficiency and reliable electrical isolation are critical. The series typically includes various voltage and current combinations to suit diverse low-power supply needs.
Replacement Considerations
The PC-28-40 is an alternative part number within the same family offering similar electrical characteristics. Verify mechanical compatibility and pinout alignment before substitution. Ensure the replacement maintains the required 1500Vrms isolation and 1.2VA power rating for equivalent performance.
