VTH13310-1440 - Mullard 5-20 stereo HT Transformer


  • Order Code: VTH13310-1440.
  • Issue: 7.
  • Page Updated: 07 Aug 2021.
  • Change Request: XD50690.
  • Release Note: YD11946.


  • Primary: 10-0-200-220-240 VRMS 50/60Hz.
  • Output: 410-0-410 VRMS 400mA DC 6.3ct 6A 6.3ct 3A 5v 4A.
  • Construction: Iron Laminated. Double insulated.
  • Treatment: Vacuum Varnish Impregnated.
  • Application: HT Anode and Heater supplies.
  • Range: Standard.

Mounting Arrangement


Mechanical Dimensions

  • Size (SZ) = Patt248x2 FS FL.
  • Width (W) = 4 3/8 inch (111mm).
  • Depth (D) = 5 inch (127mm).
  • Height (H) = 5 1/4 inch (133mm).
  • Fix Centres (FWxFD) = 3 5/8 x 3 inch (92mm x 76mm).
  • Fix Size (FZ) = 1/4 inch (M6).
  • Weight (WT) = *To be added later.


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Function Connection
10 Volts Mauve wire
0 Volts Blue wire
200 Volts Yellow wire
220 Volts Orange wire
240 Volts Red wire
HT Anode A Red wire (A)
HT Centre(Ground) Black wire
HT Anode B Red wire (B)
Rectifier Filament A Brown sleeved wire (A)
Rectifier Filament B Brown sleeved wire (B)
Heater A Blue sleeved wire (A)
Heater Centre Black sleeved wire
Heater B Blue sleeved wire (B)
Heater 2 A Green sleeved wire (A)
Heater 2 Centre White sleeved wire
Heater 2 B Green sleeved wire (B)

Connection Layout

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Application Notes

  • Safety note: Warning. This part may be connected to high voltage. Disconnect then discharge for 5 minutes before working on circuit.
  • See also Links on Left of this page.

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