MIL-SPEC · Electronic Components
7403
Electron Tube
Part Number7403
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5960-00-060-6582 (NSN)
Federal Item NameELECTRON TUBE
Federal Supply Class5960 — Electron Tubes
Nondefinitive Spec Std Data7403 TYPE
Tube TypeTETRODE
Overall Width0.438 INCHES NOMINAL
Distance Between Mounting Facility0.500 INCHES NOMINAL
Overall Height0.032 INCHES NOMINAL
Terminal Type And Quantity1 TAB, SOLDER LUG AXIALLY AT ONE END
Mounting MethodUNTHREADED HOLE(S)
Voltage Rating In Volts110.0 AC
Mounting Facility Quantity2
FSC Application DataTELETYPEWRITER SET
Overall Length2.469 INCHES NOMINAL
Current Rating In Amps10.0
Unthreaded Mounting Hole Diameter0.266 INCHES NOMINAL
Cancelled NSN5935-00-391-9637 (cancelled)
ESD/EMICode A — ESD/EMI sensitive item
Vendor Part Numbers8330178
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 7403 available?
We can source 7403 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 7403 by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 7403 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 7403?
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 7403?
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.