MIL-SPEC · Electronic Components
393A
Electron Tube
Part Number393A
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5960-00-188-8632 (NSN)
Federal Item NameELECTRON TUBE
Federal Supply Class5960 — Electron Tubes
Tube TypeTHYRATRON
Nondefinitive Spec Std Data393A TYPE
Envelope Medium TypeGAS
Overall Length12.000 INCHES NOMINAL
Impedance Rating In Ohms50.0 INPUT-OUTPUT
Attenuation Variation MethodCONTINUOUS
Power Rating200.0 WATTS AVERAGE
Application DesignTRANSMISSION LINE
Overall Width5.500 INCHES NOMINAL
Overall Height2.750 INCHES NOMINAL
Frequency Range500.000 MEGAHERTZ MINIMUM AND 1000.000 MEGAHERTZ MAXIMUM
Mounting Facility Type And Quantit4 UNTHREADED HOLE(S)
Overall Attenuation Accuracy In De-0.575 TO 0.575
Overall Attenuation Range In Decib+5.0 TO 120.0
RH Electronics, Inc. — independent stocking distributor since 1982.
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Frequently asked
Is 393A available?
We can source 393A even if it isn't in our active stock list. As an independent distributor we reach inventory outside the franchise channel — including hard-to-find and obsolete parts. Send us a quote request.
Is 393A by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 393A has been discontinued, we can often source remaining stock or qualified alternates. Contact us with your quantity and target date.
How does RH Electronics verify parts like 393A?
Every incoming shipment is inspected under our ISO 9001:2015 quality system — documentation, markings, and construction checked against known-good references. For deeper analysis, we direct work through accredited independent labs. We've been an ERAI member since 1998 and a GIDEP participant.
Can you find a cross-reference or alternate for 393A?
Yes. Our team reads part numbers the way they were designed — decoding family, speed, temperature grade, package, and reliability level — to identify acceptable alternates when the exact part isn't available. Submit a quote request and we'll advise.