5642: Difference between revisions
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[[File:Apollo 5642 tube.jpg|thumb|300px|right|Apollo 5642 tube]] | [[File:Apollo 5642 tube.jpg|thumb|300px|right|Apollo 5642 tube]] | ||
{{Vacuum Tube | |||
The European type DY70 is very similar (with lower heater current). | |Type=Diode | ||
|Number=5642 | |||
|EuroNumber=DY70 (similar) | |||
|RussianNumber= | |||
|Part_nos=154-0051-00, 154-0079-00 | |||
|Description=directly-heated high-voltage rectifier | |||
|Used_in=360;453;504;506;513;515;516;533;533A;535;543;543A;543B;545;545A;545B;547;551;555;567;575;647 | |||
|Designers= | |||
}}. It has three flexible lead connections and is intended to be soldered into the circuit. | |||
The European type DY70 is very similar (with lower heater current, 140 mA). | |||
It is used in the CRT cathode and post-deflection acceleration supplies in many Tektronix scopes. | It is used in the CRT cathode and post-deflection acceleration supplies in many Tektronix scopes. | ||
In typical CRT circuits, the filament/cathode leads of each 5642 have their own secondary winding | In typical CRT circuits, the filament/cathode leads of each 5642 have their own secondary winding | ||
on the HV transformer, typically a single loop of wire with extra silicone tube insulation. | on the HV transformer, typically a single loop of wire with extra silicone tube insulation. | ||
{{BeginSpecs}} | {{BeginSpecs}} | ||
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==Links== | ==Links== | ||
* [http://w140.com/5642.pdf RCA 5642 datasheet (PDF)] | * [http://w140.com/5642.pdf RCA 5642 datasheet (PDF)] | ||
* [[tube:5642|5642 @ radiomuseum.org | * [[tube:5642|5642]] / [[tube:dy70|DY70]] @ radiomuseum.org | ||
==Pictures== | ==Pictures== |
Revision as of 14:19, 10 October 2021
The 5642 (European: DY70 (similar)) (P/N 154-0051-00, 154-0079-00) is a directly-heated high-voltage rectifier vacuum tube. It has three flexible lead connections and is intended to be soldered into the circuit.
The European type DY70 is very similar (with lower heater current, 140 mA).
It is used in the CRT cathode and post-deflection acceleration supplies in many Tektronix scopes. In typical CRT circuits, the filament/cathode leads of each 5642 have their own secondary winding on the HV transformer, typically a single loop of wire with extra silicone tube insulation.
Key Specifications
Heater | 1.25 V, 200 mA |
---|---|
Peak inverse voltage | 10 kV |
Peak plate current | 250 μA |
Links
- RCA 5642 datasheet (PDF)
- 5642 / DY70 @ radiomuseum.org