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Product Detailed Parameters
- Description：PWR XFMR LAMINATED 2.5VA TH
- Series：One-4-All™
- Mfr：Signal Transformer
- Package：Box
- Type：Laminated Core
- Voltage - Primary：115V, 230V
- Voltage - Secondary (Full Load)：Parallel 10V, Series 20V
- Current - Output (Max)：Parallel 240mA, Series 120mA
- Primary Winding(s)：Dual
- Secondary Winding(s)：Dual
- Center Tap：No
- Power - Max：2.5VA
- Mounting Type：Through Hole
- Termination Style：PC Pin
- Size / Dimension：41.30mm L x 36.50mm W
- Height - Seated (Max)：28.60mm
- Voltage - Isolation：4000Vrms
- Weight：0.25 lb (113.4 g)
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Overview
The Signal Transformer 14A-2.5R-20 is a laminated core power transformer designed for board mounting applications operating at 50/60 Hz frequencies. It features a primary voltage rating of 115V or 230V and offers flexible secondary configurations with parallel connections providing 10V at 240mA, or series connections yielding 20V at 120mA. The unit has a maximum power capacity of 2.5VA and utilizes through-hole PC pin termination. Its physical dimensions are 41.30mm in length by 36.50mm in width.
Feature Summary
- Laminated core construction for standard AC power transformation
- Flexible secondary output options via parallel or series wiring
- Through-hole mounting with PC pin terminations
Applications
- Low-power electronic equipment requiring isolated AC supply
- Control circuits operating at 50Hz or 60Hz
- General purpose board-mounted power conversion
Procurement Notes
Verify the specific secondary configuration required (parallel 10V or series 20V) against the circuit design before procurement. Confirm that the through-hole footprint matches the PCB layout. Ensure the input voltage aligns with the available primary ratings. Check for any recent product change notifications regarding manufacturing relocation or material updates from the supplier.
Selection Notes
Select this component when a compact, low-power laminated transformer is needed for AC isolation. It is suitable for applications where surface-mount alternatives are unavailable or when higher current handling at low voltage is required via parallel secondary windings. Consider thermal management requirements based on the 2.5VA power rating and ambient operating conditions.
Part Context
This part belongs to the 14A Series of international power transformers manufactured by Signal Transformer. The series provides standardized solutions for various global voltage inputs and common low-voltage outputs. These transformers are typically used in consumer electronics and industrial control panels where reliable AC-to-AC isolation is necessary.
Replacement Considerations
Direct replacements must match the 2.5VA power rating, 115V/230V primary input, and compatible secondary outputs. Verify mechanical dimensions and pin spacing to ensure PCB compatibility. Alternative models within the same series may offer different voltage taps but require electrical verification.
