10/8/2018 High Voltage (Plate) & Filament (300 Series) - Hammond Mfg.
https://www.hammfg.com/electronics/transformers/classic/300 1/3
High Voltage (Plate) & Filament 300 Series
Universal Primary & 50/60 Hz Operation
Features
Primary: Universal - 100, 110, 120, 200, 220,230, 240 VAC 50/60 Hz.
NOTE: units are designed to operate with BOTH primary windings engaged.
See primary wiring information under resources.
Bias Tap: 50 VAC tap from high voltage secondary C.T. (except part number 379WX -
uses a separate 60VAC 0.2 Amp winding).
Highpot tested: 2,000 VAC
Faraday Copper Primary Shield: Our electrostatic shield reduces the capacitive coupling
from the primary - greatly attenuating higher frequency current coupling to the
secondaries (shield is internally grounded to the end bell).
Windings: Concentric wound for low stray field and low noise.
Models: This series is an upgrade from our entire 200 Series range of units PLUS 2
models designed specifically for 300B tubes (Part Number 300BX) and 2A3 tubes (Part
Number 302AX).
Finish: Black powder paint to match our 1650 series of output transformers Units can be
run full wave bridge or full wave C.T.
Conservative designs - CSA certified (209651).
For a more economical, open frame, universal primary - check out our 260 Series.
For that "high end" look & feel check out our potted versions - the 300P Series.
Gallery
Part No. VA
A.C. Bias Tap on High
Filament #1 Filament #2 Filament #3 Filament #4 Dimension
High Voltage Voltage secondary
Secondary with C.T Grounded
R.M.S. (VAC) (VAC) (VAC) (VAC) (VAC) Reference
363AX 32 200V C.T. @ 115ma. 50 5V C.T. @ 2A - - - X6
369AX 40 250V C.T. @ 115ma. 50 6.3V C.T. @ 2A - - - X6
369BX 39 300V C.T. @ 86ma. 50 6.3V C.T. @ 2A - - - X6
Quality Products. Service Excellence.
10/8/2018 High Voltage (Plate) & Filament (300 Series) - Hammond Mfg.
https://www.hammfg.com/electronics/transformers/classic/300 2/3
Part No. VA
A.C. Bias Tap on High
Filament #1 Filament #2 Filament #3 Filament #4 Dimension
High Voltage Voltage secondary
Secondary with C.T Grounded
R.M.S. (VAC) (VAC) (VAC) (VAC) (VAC) Reference
363CX 119 360V C.T. @ 288ma. 50 5V C.T. @ 3A - - - X11
369EX 45 380V C.T. @ 75ma. 50 6.3V C.T. @ 2.5A - - - X6
369HX 120 450V C.T. @ 150ma. 50 5V C.T. @ 3A 6.3V C.T. @ 6A - - X10
369KX 188 450V C.T. @ 300ma. 50 5V C.T. @ 3A 6.3V C.T. @ 6A - - X20
370X 41 480V C.T. @ 46ma. 50 5V C.T. @ 2A 6.3V C.T. @ 1.5A - - X6
370AX 44 480V C.T. @ 58ma. 50 6.3V C.T. @ 2.5A - - - X6
369GX 50 450V C.T. @ 75ma. 50 6.3V C.T. @ 2.5A - - - X6
369JX 50 500V C.T. @ 69ma. 50 6.3V C.T. @ 2.5A - - - X6
370CAX 66 500V C.T. @ 81ma. 50 5V C.T. @ 2A 6.3V C.T. @ 2.5A - - X8
370JX 133 500V C.T. @ 161ma. 50 5V C.T. @ 3A 6.3V C.T. @ 6A - - X20
370KX 229 500V C.T. @ 322ma. 50 5V C.T. @ 6A 6.3V C.T. @ 6A - - X22
370DAX 76 520V C.T. @ 104ma. 50 6.3V C.T. @ 3.5A - - - X8
370BX 55 550V C.T. @ 58ma. 50 5V C.T. @ 2A 6.3V C.T. @ 2A - - X7
370CX 59 550V C.T. @ 75ma. 50 6.3V C.T. @ 0.6A 6.3V C.T. @ 2.5A - - X7
370DX 86 550V C.T. @ 104ma. 50 5V C.T. @ 2A 6.3V C.T. @ 3A - - X8
370EX 119 550V C.T. @ 144ma. 50 5V C.T. @ 3A 6.3V C.T. @ 4A - - X11
370FX 141 550V C.T. @ 173ma. 50 5V C.T. @ 3A 6.3V C.T. @ 5A - - X20
370HX 180 550V C.T. @ 230ma. 50 5V C.T. @ 3A 6.3V C.T. @ 6A - - X20
370LX 340 550V C.T. @ 460ma. 50 5V C.T. @ 6A 6.3V C.T. @ 9A - - X23
370MX 403 550V C.T. @ 575ma. 50 5V C.T. @ 6A 6.3V C.T. @ 9A - - X24
371X 63 560V C.T. @ 69ma. 50 5V C.T. @ 2A 6.3V C.T. @ 2A - - X7
372BX 98 600V C.T. @ 115ma. 50 5V C.T. @ 2A 6.3V C.T. @ 3A - - X10
372DX 127 600V C.T. @ 144ma. 50 5V C.T. @ 3A 6.3V C.T. @ 4A - - X11
372FX 150 600V C.T. @ 173ma. 50 5V C.T. @ 3A 6.3V C.T. @ 5A - - X20
302AX 198 600V C.T. @ 230ma. 50 2.5V C.T. @ 2.5A 5V C.T. @ 3A 6.3V C.T. @ 6A 2.5V C.T. @ 2.5A X13
372HX 191 600V C.T. @ 230ma. 50 5V C.T. @ 3A 6.3V C.T. @ 6A - - X13
372JX 243 600V C.T. @ 288ma. 50 5V C.T. @ 4A 6.3V C.T. @ 8A - - X14
372KX 432 600V C.T. @ 575ma 50 5V C.T. @ 6A 6.3V C.T. @ 9A - - X21
372LX 520 600V C.T. @ 690ma 50 5V C.T. @ 6A 6.3V C.T. @ 12A - - X25
372X 75 620V C.T. @ 81ma. 50 5V C.T. @ 2A 6.3V C.T. @ 2.4A - - X8
376X 157 640V C.T. @ 173ma. 50 5V C.T. @ 3A 6.3V C.T. @ 5A - - X20
373EX 311 650V C.T. @ 345ma. 50 5V C.T. @ 6A 6.3V C.T. @ 9A - - X23
373FX 386 650V C.T. @ 460ma. 50 5V C.T. @ 6A 6.3V C.T. @ 9A - - X24
373DX 101 700V C.T. @ 104ma. 50 5V C.T. @ 2A 6.3V C.T. @ 3A - - X10
373X 125 700V C.T. @ 127ma. 50 5V C.T. @ 2A 6.3V C.T. @ 4A - - X11
373BX 187 700V C.T. @ 201ma. 50 5V C.T. @ 3A 6.3V C.T. @ 5A - - X13
373HX 369 700V C.T. @ 403ma. 50 5V C.T. @ 6A 6.3V C.T. @ 9A - - X21
373JX 710 700V C.T. @ 863ma. 50 5V C.T. @ 6A 6.3V C.T. @ 12A - - X26
374AX 136 720V C.T. @ 138ma. 50 5V C.T. @ 3A 6.3V C.T. @ 3.5A - - X11
374X 141 750V C.T. @ 127ma. 50 5V C.T. @ 3A 6.3V C.T. @ 5A - - X20
374BX 200 750V C.T. @ 201ma. 50 5V C.T. @ 3A 6.3V C.T. @ 6A - - X13
375X 171 800V C.T. @ 155ma. 50 5V C.T. @ 3A 6.3V C.T. @ 5A - - X20
378X 237 800V C.T. @ 230ma. 50 5V C.T. @ 3A 6.3V C.T. @ 6A - - X22
300BX 280 800V C.T. @ 288ma. 50 5V C.T. @ 1.2A 5V C.T. @ 3A 6.3V C.T. @ 6A - X15
378CX 465 800V C.T. @ 534ma. 50 6.3V C.T. @ 6A - - - X21
379WX 940 800V C.T. @ 1.06 A or 850V C.T. @ 1A 60* 6.3V C.T. @12A - - - X26
379X 193 850V C.T. @ 173ma. 50 5V C.T. @ 3A 6.3V C.T. @ 5A - - X22
382X 283 1,000V C.T. @ 230ma. 50 5V C.T. @ 3A 6.3V C.T. @ 6A - - X15
384X 329 1,200V C.T. @ 230mA 50 5V @ 3A 6.3V @ 3A 6.3V @ 3A X15
*Note: 60 VAC winding for bias supply - on our 379WX is a separate winding (maximum current of 200 ma.)
Note: See our PDF Design Guide for rectifier use suggestions.
Horizontal Mount ("Z" mounting)