Lucent Technologies Inc. Corporate Headquarters · Electronic Components
403B
Electron Tube
Part Number403B
ManufacturerLucent Technologies Inc. Corporate Headquarters
AvailabilityAvailable to order — request a quote
Specifications
NSN5960-00-237-0094 (NSN)
Federal Item NameELECTRON TUBE
Federal Supply Class5960 — Electron Tubes
Tube TypePENTODE
Surface TreatmentENAMEL
PhaseSINGLE
Operating Voltage Rating In Volts115.0 AC NOMINAL AND 230.0 AC NOMINAL
Power SourceINTERNAL
Scale Division Quantity12 SINGLE INDICATOR SINGLE RANGE
Sensitivity Rating1.0 MILLIVOLTS
Frequency Rating50.000 HERTZ MINIMUM AND 1.000 KILOHERTZ MAXIMUM
Overall Length8.000 INCHES NOMINAL
Style DesignatorRECTANGULAR OR SQUARE
Accuracy In Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR ALL RANGES
Overall Width6.093 INCHES NOMINAL
Vendor Part NumbersME-317/FSM-34
ESD/EMICode A — ESD/EMI sensitive item
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 403B available?
We can source 403B 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 403B by Lucent Technologies Inc. Corporate Headquarters obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 403B 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 403B?
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 403B?
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.