Viking Technologies, Ltd.. · Electronic Components
133-278B
Shield, Electron Tube
Part Number133-278B
ManufacturerViking Technologies, Ltd..
AvailabilityAvailable to order — request a quote
Specifications
NSN5960-00-262-0016 (NSN)
Federal Item NameSHIELD,ELECTRON TUBE
Federal Supply Class5960 — Electron Tubes
Accommodated Item Securing DeviceCOMPRESSION SPRING
Mounting Facility Type And Quantit1 TWIST LOCK SINGLE MOUNTING FACILITY
Surface Treatment Document And ClaQQ-P-421 FED SPEC SINGLE TREATMENT RESPONSE
Style DesignatorBAYONET TYPE
MaterialSTEEL
Surface TreatmentCADMIUM
Tube Accommodated Maximum Height1.875 INCHES
Overall Height1.750 INCHES NOMINAL
Tube Envelope Accommodated Maximum0.750 INCHES
Eia Electron Tube Envelope AccommoT5 1-2 5-2
Overall Diameter0.915 INCHES NOMINAL
Vendor Part Numbers12Z7511-18
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 133-278B available?
We can source 133-278B 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 133-278B by Viking Technologies, Ltd.. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 133-278B 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 133-278B?
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 133-278B?
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.