290GA

Description：PWR XFMR 120VA CHAS MT
Series：290
Mfr：Hammond Manufacturing
Package：Bulk

SKU:cf5be24c7bf4 Category: Power Transformers Brand: Hammond Manufacturing

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Product introduction

290GA is listed in the Power Transformers range at ChipApex. The manufacturer field lists Hammond Manufacturing. Its product description is PWR XFMR 120VA CHAS MT. Review the specifications below when checking this part for your BOM.

Power Transformers specifications for 290GA

Description：PWR XFMR 120VA CHAS MT
Series：290
Mfr：Hammond Manufacturing
Package：Bulk
Type：-
Voltage - Primary：120V
Voltage - Secondary (Full Load)：640V, 6.3V, 5V
Current - Output (Max)：-
Primary Winding(s)：Single
Secondary Winding(s)：Triple
Center Tap：Yes
Power - Max：120VA
Mounting Type：Chassis Mount
Termination Style：Wire Leads
Size / Dimension：-
Height - Seated (Max)：76.20mm
Voltage - Isolation：2000V
Weight：-

Power Transformers datasheet and documents for 290GA

290GA

Power Transformers Overview

The Hammond Manufacturing 290GA is a power transformer designed for industrial applications, specifically tube guitar amplifiers. It features a single primary winding rated at 117VAC and operates at a frequency of 60 Hz. The secondary configuration includes three windings with center taps, providing voltages of 260VCT, 6.3V, and 5V. Current ratings are specified as 170mA for the high-voltage section, 3A for the 6.3V winding, and 3A for the 5V winding. The unit utilizes pin terminals for connection and is constructed with an unshielded design.

Power Transformers Feature Summary

Designed specifically for tube application power transformers in audio equipment
Features a triple secondary winding configuration with center taps
Utilizes pin terminal connections for through-hole mounting

Power Transformers Applications

Fender Pro Jr. amplifier reissues
Tube guitar amplifier power supply circuits
Audio signal transformer applications requiring specific voltage taps

Power Transformers Procurement Notes

Verify the exact secondary current requirements against the target amplifier schematic before procurement. Confirm that the pin terminal interface matches the chassis layout. Ensure the unshielded construction meets the electromagnetic interference requirements of the specific enclosure design. Cross-reference the 117VAC primary rating with the local mains voltage standards.

Power Transformers Selection Notes

Select this component when a dedicated power transformer for vintage-style tube amplifiers is required. The 290 series offers standardized dimensions and electrical characteristics compatible with classic amplifier designs. Consider the unshielded nature if noise sensitivity is critical, or if external shielding will be implemented. Compare against other 290 series variants like the 290TX or 290XXA to ensure the voltage and current outputs align precisely with the vacuum tube plate and filament requirements.

Power Transformers Part Context

The 290GA belongs to the Hammond Manufacturing 290 Series, which specializes in power transformers for tube-based audio equipment. This series is widely recognized in the musical instrument industry for replicating original specifications in reissue amplifiers. The GA suffix typically denotes specific winding configurations tailored for particular amplifier models, distinguishing it from other series members used in different power ranges or applications.