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Product Detailed Parameters
- Description：PWR XFMR LAMINATED 20VA 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 2A, Series 1A
- Primary Winding(s)：Dual
- Secondary Winding(s)：Dual
- Center Tap：No
- Power - Max：20VA
- Mounting Type：Through Hole
- Termination Style：PC Pin
- Size / Dimension：57.20mm L x 47.60mm W
- Height - Seated (Max)：41.30mm
- Voltage - Isolation：4000Vrms
- Weight：0.9 lb (408.23 g)
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Overview
The Signal Transformer 14A-20-20 is a laminated power transformer designed for through-hole mounting on printed circuit boards. It features dual primary windings rated for 115 VAC and 230 VAC operation, providing versatile input compatibility. The secondary output delivers 20 VAC with no center tap configuration. This unit supports a maximum power rating of 20 VA, with current outputs specified as parallel 2 A or series 1 A. It offers 4000 Vrms isolation voltage and utilizes PC pin termination for secure board attachment.
Feature Summary
- Dual primary winding design enables flexible connection to standard 115 VAC or 230 VAC line voltages.
- Provides robust electrical isolation with a 4000 Vrms dielectric strength between windings.
- Supports adaptable secondary configurations allowing parallel or series current output arrangements.
Applications
- General purpose AC power supply circuits
- Industrial control panel power distribution
- Consumer electronics internal power conversion
Procurement Notes
Verify the specific secondary configuration requirements against the datasheet before ordering. Confirm that the 20 VA power rating and 20 VAC output voltage align with the load specifications. Ensure the through-hole PC pin footprint matches the target PCB layout dimensions. Check RoHS compliance status if required by project regulations.
Selection Notes
Select this component when a 20 VA laminated transformer is required for board-mounted applications. Consider the physical dimensions and height constraints relative to the enclosure design. Evaluate the thermal performance characteristics under expected operating loads. Compare alternative models in the 14A series if different voltage or current ratings are needed.
Part Context
This part belongs to the Signal Transformer 14A series, which includes various triple output and split bobbin transformers. The series is characterized by PC board mount capability combined with high-performance features typical of laminated core designs. Other variants in the family offer different voltage taps and power capacities while maintaining similar mounting styles.
Replacement Considerations
The Hammond Manufacturing 183H16 is listed as a similar replacement option. Verify that the 183H16's 20 VA rating and 16 VAC secondary voltage meet the application requirements despite the voltage difference.
