Narda Holdings, Inc. · Electronic Components
SEM143D
Switch, Radio Frequency Transmiss
Part NumberSEM143D
ManufacturerNarda Holdings, Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-01-432-0866 (NSN)
Federal Item NameSWITCH,RADIO FREQUENCY TRANSMISS
Federal Supply Class5985 — Antennas and Waveguides
Body StyleRECTANGULAR
Overall Width1.750 INCHES NOMINAL
Connector End DesignFEMALE
Mounting Facility Type And Quantit4 UNTHREADED HOLE(S)
Actuator Voltage In Volts28.0 NOMINAL
Unthreaded Mounting Hole Diameter0.144 INCHES NOMINAL
Surface TreatmentGOLD CONTACT(S) ALL SURFACES
Precious MaterialGOLD
Mounting Facility PatternFOUR POSITION RECTANGULAR SINGLE MOUNTING FACILITY PATTERN
Throw Quantity4
Actuator Operating MethodRELAY
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 SEM143D available?
We can source SEM143D 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 SEM143D by Narda Holdings, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If SEM143D 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 SEM143D?
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 SEM143D?
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.