Hammond 290FEXA Generic 100W Multi-Voltage Tube Amp Power Transformer
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Create Free Business AccountKey Features
- 100W power transformer, listed as GENERIC in the ordering table
- Multi-tap primary: 120/220/230/240V @ 50/60 Hz
- 690/640Vct @ 450 mA dual-tap high-voltage secondary
- 60V bias winding
- 6.3Vct @ 5.5 A heater winding
- Bobbin-wound construction
- 5.5 lbs (2.49 kg); RoHS and REACH compliant
The 290FEXA is a Hammond 290 Series power transformer described on its part page as a 100W power transformer and as a replacement for Fender guitar amps. In the ordering table its amp model is listed as GENERIC rather than tied to a single amp, which makes it a candidate for builders and techs who need a 100W-class tube amp power supply.
The primary is rated 120/220/230/240V @ 50/60 Hz. The high-voltage secondary is 690/640Vct @ 450 mA, giving two plate-voltage options, alongside a 60V bias winding and a 6.3Vct @ 5.5 A heater winding. The ordering table lists bobbin winding.
Hammond designed the 290 Series for drop-in replacement of original units, with parts made to look similar to the original factory transformers where possible and materials and design specs kept as close as possible to the original part to preserve the stock tone.
The 290FEXA ships at 5.5 lbs (2.49 kg), is RoHS and REACH compliant, and is identified by UPC 623980252285 and UNSPSC 39121301. Because its listing is generic, check its ratings against your amp's requirements before installing.
Ideal For
- 100W tube guitar amp builds
- Multi-voltage power transformer replacement
- Tube amp projects needing selectable 690/640Vct plate supply
Overview
| Series | 290 Series (Tube Guitar Amplifier - Power Transformers) |
| Part Number | 290FEXA |
| Product Type | Power transformer, replacement for Fender guitar amp, 290 series |
| Short Description | 100W POWER TRANS |
Electrical
| Secondary 1 | 690/640Vct @ 450 mA |
| Secondary 2 | 60V Bias |
| Secondary 3 | 6.3Vct @ 5.5 A |
| Primary Volts | 120/220/230/240 @50/60 Hz |
Identifiers
| UPC | 623980252285 |
| UNSPSC | 39121301 |
Packaging & Shipping
| Shipping Weight | 5.5 lbs (2.49 kg) |
Construction & Finish
| Winding | Bobbin |
Compliance & Certifications
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
Amp Cross-Reference (Ref. Only)
| Listed Amp (Fender Table) | GENERIC |
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Frequently Asked Questions
Is the 290FEXA tied to a specific amp?▾
No, the ordering table lists its amp model as GENERIC.
What primary voltages does it support?▾
120/220/230/240V @ 50/60 Hz.
What are the secondaries?▾
690/640Vct @ 450 mA, 60V bias and 6.3Vct @ 5.5 A.
How is it wound?▾
Bobbin, per the ordering table.
What is its shipping weight?▾
5.5 lbs (2.49 kg).
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