Allegro Microsystems Inc. · Electronic Components
A3121LU
Switch, Electronic
Part NumberA3121LU
ManufacturerAllegro Microsystems Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-01-475-2466 (NSN)
Federal Item NameSWITCH,ELECTRONIC
Federal Supply Class5930 — Switches
Inclosure TypeOPEN
Connection TypePIN BOTTOM
Circuit Construction TypeSOLID STATE
Installation DesignPANEL
Overall Length17.220 MILLIMETERS NOMINAL
Overall Height1.540 MILLIMETERS NOMINAL
Criticality Code JustificationFEAT
Nuclear Hardness Critical FeatureHARDENED
Connection Contact Type And Quanti3 PIN EXTERNAL
Average Life MeasurementYEARS
Basic Shape StyleIRREGULAR
Vendor Part Numbers13307035-002
ESD/EMICode B — 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 A3121LU available?
We can source A3121LU 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 A3121LU by Allegro Microsystems Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If A3121LU 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 A3121LU?
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 A3121LU?
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.