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DY86

Sensibly equivalent to:
1S2 1S2A DY87
See also:
Valves and their Habits - Mullard EHT Rectifier DY86 - EHT Rectifier Type DY86
    
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The DY86 is a television EHT rectifier. It was designed to have its heater supply produced by an overwind on the line output transformer. The 18,000 Volt rating places this as a rectifier for medium sized monochrome televisions.
The DY87 only differs in that the glass is silicone treated for better insulation in humid conditions.
The bell anode at the top with the shield cylinder at the base.
The thin glass tube envelope is 21 mm in diameter, and excluding the B9A base pins is 66 mm tall.
References: Datasheet & 1040 Type DY86 was first introduced in 1955.

 

Pin Connections
B9A
1
2
3
4
5
6
7
8
9
tc
h,k,s
h
ic
h,k,s
h
h,k,s
ic
h
h,k,s
a

 

Absolute Maximum Operating Conditions
Rectifier
Vh
Ah
Va
mAa
1.4
0.55
18,000
0.15
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 10, 2016.
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