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DST-4-120
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Product Detailed Parameters
- Description：PWR XFMR LAMINATED 6VA TH
- Series：DST
- Mfr：Signal Transformer
- Package：Bulk
- Type：Laminated Core
- Voltage - Primary：115V, 230V
- Voltage - Secondary (Full Load)：Parallel 60V, Series 120V
- Current - Output (Max)：Parallel 100mA, Series 50mA
- Primary Winding(s)：Dual
- Secondary Winding(s)：Dual
- Center Tap：No
- Power - Max：6VA
- Mounting Type：Through Hole
- Termination Style：PC Pin
- Size / Dimension：41.30mm L x 33.30mm W
- Height - Seated (Max)：33.30mm
- Voltage - Isolation：2500Vrms
- Weight：0.44 lb (199.58 g)
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Overview
The DST-4-120 is a laminated core power transformer from the Split/Tran series, designed for through-hole mounting. It features dual primary windings rated for 115 VAC and 230 VAC input. The secondary configuration provides split bobbin outputs of 60 V at 100 mA and 120 V center-tapped at 50 mA. With a 6 VA power rating and 2500 Vrms isolation voltage, this Class 2 transformer measures 41.30 mm in length, 33.30 mm in width, and 33.30 mm in height.
Feature Summary
- Dual cavity split bobbin construction
- Dual primary winding capability
- Class 2 safety isolation
Applications
- Industrial control panels
- Instrumentation equipment
- Power supply circuits
Procurement Notes
Verify that the specific part number matches the required secondary voltage and current ratings. Confirm that the through-hole package dimensions fit the target PCB layout. Ensure compliance with RoHS3 standards if required by the manufacturing process. Check datasheet specifications for thermal derating requirements under continuous operation conditions.
Selection Notes
Select this component when a split secondary output is necessary for bridge rectification or dual-rail applications. The dual primary design allows flexibility for different line voltages without changing hardware. Verify that the 6 VA rating meets the load requirements. Consider the physical size constraints relative to other transformers in the ST/DST family.
Part Context
This device belongs to the Signal Transformer DST series, which utilizes a split bobbin architecture. This design separates primary and secondary windings into distinct cavities within the core structure. The series offers various power ratings and voltage configurations while maintaining consistent mechanical footprints for easy integration into existing designs.
Replacement Considerations
The Triad Magnetics FS120-05 is documented as a similar alternative. Both parts share identical electrical specifications including 6 VA rating, 115/230 VAC primary, and 60V/120VCT secondary outputs. Verify mechanical compatibility before substitution.
