Narda Holdings, Inc. · Electronic Components
SEM143
Switch, Radio Frequency Transmiss
Part NumberSEM143
ManufacturerNarda Holdings, Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-01-433-0332 (NSN)
Federal Item NameSWITCH,RADIO FREQUENCY TRANSMISS
Federal Supply Class5985 — Antennas and Waveguides
Actuator Operating MethodRELAY
Longest Horizontal Distance Betwee1.375 INCHES NOMINAL SINGLE MOUNTING FACILITY PATTERN
Longest Vertical Distance Between1.375 INCHES NOMINAL SINGLE MOUNTING FACILITY PATTERN
Minimum Crosstalk Rating In Decibe80.0 SINGLE
Mounting Facility Type And Quantit4 UNTHREADED HOLE(S)
Frequency Rating0.0 GIGAHERTZ MINIMUM AND 18.0 GIGAHERTZ MAXIMUM SINGLE FREQUENCY OPERATING
Unthreaded Mounting Hole Diameter0.144 INCHES NOMINAL
Actuator Current Type And Rating I0.15 DC NOMINAL
Switch TypeNONTRANSFER
Connector End DesignFEMALE
Terminal Type And Quantity5 RECEPTACLE, COAXIAL AND 10 TURRET
Vendor Part NumbersG1-22-9034
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 SEM143 available?
We can source SEM143 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 SEM143 by Narda Holdings, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If SEM143 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 SEM143?
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 SEM143?
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.