Telephone Company of America · Electronic Components
D121178-3
Switch, Rotary
Part NumberD121178-3
ManufacturerTelephone Company of America
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-00-327-7856 (NSN)
Federal Item NameSWITCH,ROTARY
Federal Supply Class5930 — Switches
Terminal TypeTAB, SOLDER LUG
Switch Actuator Positioning Increm90.0 DEGREES SINGLE ACTUATOR
Pile Up Contact Form Arrangement1C SINGLE SWITCH SINGLE SECTION IN-LINE
Individual Section Quantity1
Switch Contact Basic DesignPILE-UP
Contact Load Current Rating1.0 AMPERES RESISTIVE LOAD DC AT SEA LEVEL
Switch Actuator Indexing Position2 SINGLE ACTUATOR
Contact Voltage Rating In Volts48.0 DC AT SEA LEVEL
Shaft TypeROUND SINGLE ACTUATOR
Shaft Length1.000 INCHES NOMINAL SINGLE ACTUATOR
Shaft Diameter0.453 INCHES NOMINAL SINGLE ACTUATOR
Vendor Part NumbersD12178-3
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 D121178-3 available?
We can source D121178-3 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 D121178-3 by Telephone Company of America obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If D121178-3 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 D121178-3?
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 D121178-3?
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.