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Product Detailed Parameters
- Description：PWR XFMR LAMINATED 4.4VA TH
- Series：161
- Mfr：Hammond Manufacturing
- Package：Bulk
- Type：Laminated Core
- Voltage - Primary：115V
- Voltage - Secondary (Full Load)：Parallel 6.3V, Series 12.6V
- Current - Output (Max)：Parallel 700mA, Series 350mA
- Primary Winding(s)：Single
- Secondary Winding(s)：Single, Multiple Taps
- Center Tap：No
- Power - Max：4.4VA
- Mounting Type：Through Hole
- Termination Style：PC Pin
- Size / Dimension：42.93mm L x 31.75mm W
- Height - Seated (Max)：36.83mm
- Voltage - Isolation：2000Vrms
- Weight：0.4 lb (181.44 g)
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Overview
The Hammond Manufacturing 161GA12 is a low voltage PCB mount power transformer designed for board-level integration. It features a single primary winding rated at 115 VAC and operates at a frequency of 60 Hz. The unit provides a 4.4 VA power rating with a center-tapped secondary output of 12.6V CT at 350 mA in series configuration, or 6.3V at 700 mA in parallel mode. This component utilizes through-hole mounting technology for secure attachment to printed circuit boards.
Feature Summary
- Low voltage PCB mount design for direct board integration
- Center-tapped secondary winding supporting series or parallel configurations
- Single primary winding construction for standard isolation applications
Applications
- Low voltage power supply circuits
- Control panel transformer stages
- Electronic equipment requiring isolated AC power
Procurement Notes
Verify the specific secondary configuration requirements against the application schematic before ordering. Confirm that the 115 VAC primary voltage aligns with the available line power. Ensure the PCB layout accommodates the through-hole pin spacing and physical dimensions specified in the official datasheet to prevent mechanical interference during assembly.
Selection Notes
Select this model when a compact, low-voltage isolation transformer is required for PCB mounting. Consider the 4.4 VA power limit and the specific current ratings for both series and parallel secondary modes. Verify that the operating frequency matches the system's 60 Hz requirement and that the physical footprint fits within the designated board area constraints.
Part Context
This component belongs to the Hammond Manufacturing 161G series of low voltage transformers. These units are engineered for general-purpose isolation and voltage transformation in electronic assemblies. The series emphasizes reliable performance in compact form factors suitable for various industrial and commercial electronic devices requiring stable AC power conversion.
Replacement Considerations
Consult official cross-reference lists for verified substitutes. Ensure any replacement maintains identical primary voltage, frequency, and power rating specifications. Verify that alternative components support the same mounting style and secondary configuration options to guarantee functional compatibility.
