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DW4/350

Sensibly equivalent to:
1561 442BU 460BU BVA216 CV1796 DW3 DW4-350 R2 R3 R42 R4 RV120/350 U12/14 UU120/350 UU5
    
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The DW4/350 is the Mullard version of this standard rectifier. There is no minimum series resistance quoted and the maximum value of reservoir capacitor is given as 16 μF.
Branded a Mullard product it was made by Philips in Holland.
The two central rods hold the tension springs for the oxide coated ribbon filaments.
The classic envelope is 49 mm in diameter, and excluding the B4 base pins is 114 mm tall.
References: 1043 & 1040. Type DW4/350 was first introduced in 1936. See also 1936 adverts.

 

Pin Connections
B4
1
2
3
4
a
a
f
f

 

Absolute Maximum Operating Conditions
Rectifier
Vh
Ah
Va
mAa
4.0
2.0
350
120
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 11, 2014.
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