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DST3-120B37
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Product Detailed Parameters
- Description：PWR XFMR LAMINATED 2.4VA TH
- Series：Split Bobbin Plug-In
- Mfr：Pulse Electronics
- Package：Bulk
- Type：Laminated Core
- Voltage - Primary：115V, 230V
- Voltage - Secondary (Full Load)：Parallel 60V, Series 120V
- Current - Output (Max)：Parallel 40mA, Series 20mA
- 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：35.05mm L x 28.70mm W
- Height - Seated (Max)：30.23mm
- Voltage - Isolation：2500Vrms
- Weight：0.25 lb (113.4 g)
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Overview
The DST3-120B37 is a low-frequency laminated power transformer from Pulse Electronics, designed for through-hole mounting. It features a split bobbin construction with dual primary and dual secondary windings. The unit supports a maximum power of 2.4VA. Primary voltage ratings include 115V and 230V configurations. Secondary outputs provide center-tapped voltages: 60V at 0.04A or 120V center-tapped at 0.02A. Termination is via PC pins.
Feature Summary
- Split bobbin laminated core design for efficient magnetic coupling
- Dual primary and dual secondary winding configuration
- Through-hole PC pin termination style
- Low-frequency operation capability
Applications
- General purpose AC power conversion circuits
- Industrial control system power supplies
- Electronic equipment requiring isolated voltage transformation
Procurement Notes
Verify component status as the DST3-120B37 is listed as obsolete in some distributor catalogs. Confirm availability of active replacements if current production is required. Ensure mechanical dimensions and pinout compatibility with existing PCB layouts before procurement. Cross-reference datasheet specifications to validate electrical parameters against original design requirements.
Selection Notes
Select this transformer when a 2.4VA isolation capability is needed with specific 120V/60V center-tapped secondary requirements. The split bobbin design aids in assembly and thermal management. Verify that the through-hole package fits the manufacturing process. Consider the operating temperature range and physical size constraints during integration into the target electronic enclosure.
Part Context
This component belongs to Pulse Electronics' low-frequency open-style laminated series. It shares design characteristics with models like ST3-120B37 but differs in specific voltage and current ratings. The series utilizes horizontal plug-in construction suitable for standard PCB mounting techniques common in legacy and industrial electronics manufacturing.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. As the part is marked obsolete, consult manufacturer resources for direct replacement recommendations.
