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DST-3-56
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Product Detailed Parameters
- Description：PWR XFMR LAMINATED 2.4VA TH
- Series：DST
- Mfr：Signal Transformer
- Package：Bulk
- Type：Laminated Core
- Voltage - Primary：115V, 230V
- Voltage - Secondary (Full Load)：Parallel 28V, Series 56V
- Current - Output (Max)：Parallel 90mA, Series 45mA
- Primary Winding(s)：Dual
- Secondary Winding(s)：Dual
- Center Tap：No
- Power - Max：2.4VA
- Mounting Type：Through Hole
- Termination Style：PC Pin
- Size / Dimension：34.90mm L x 28.60mm W
- Height - Seated (Max)：30.80mm
- Voltage - Isolation：2500Vrms
- Weight：0.25 lb (113.4 g)
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Overview
The DST-3-56 is a laminated core power transformer from the Split Pack™ series, designed for through-hole mounting. It features dual primary windings supporting 115V and 230V inputs in parallel configuration. The secondary output provides dual windings rated at 28V parallel or 56V series, with maximum currents of 90mA parallel and 45mA series. Rated at 2.4VA, it offers 2500Vrms isolation voltage. Physical dimensions are 34.90mm length by 28.60mm width, with a maximum installation height of 30.80mm.
Feature Summary
- Dual primary winding capability for versatile 115V/230V input configurations
- Split bobbin design providing high isolation performance
- Laminated core construction optimized for low power applications
Applications
- Class 2 and Class 3 equipment power supplies
- Low voltage control circuits requiring isolated power
- Industrial instrumentation power modules
Procurement Notes
Verify that the specific order matches the manufacturer part number DST-3-56 to ensure correct electrical specifications. Confirm that the dual primary winding requirement aligns with system input voltage standards. Check RoHS compliance status if environmental regulations apply to the final assembly. Ensure mechanical clearance accommodates the specified maximum height.
Selection Notes
Select this component when a 2.4VA rating suffices for the load requirements. The dual secondary option allows flexibility between 28V parallel and 56V series outputs. Verify that the through-hole mounting style fits the PCB layout constraints. Consider the physical footprint dimensions against available board space.
Part Context
This transformer belongs to the Signal Transformer Split Pack™ series, which utilizes split bobbin technology to enhance safety isolation. The series is categorized under Class 2 and Class 3 transformers, indicating specific insulation and safety standards. It is manufactured by Bel Signal Transformer, now part of the Signal Transformer brand portfolio.
Replacement Considerations
The ST-3-56 is documented as a similar substitute part number. Verify compatibility regarding pinout and mechanical dimensions before substitution.
