Lucent Technologies Inc. Corporate Headquarters · Electronic Components
172B
Reactor — Coils and Transformers
Part Number172B
ManufacturerLucent Technologies Inc. Corporate Headquarters
AvailabilityAvailable to order — request a quote
Specifications
NSN5950-00-158-9256 (NSN)
Federal Item NameREACTOR
Federal Supply Class5950 — Coils and Transformers
Inductance Rating18.50 HENRY NOMINAL SINGLE COMPONENT SINGLE WINDING
Winding Operating Current120.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
Terminal Type And Quantity2 TAB, SOLDER LUG
Center To Center Distance Between2.812 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP
Body Length4.375 INCHES NOMINAL
Inductance TypeFIXED
Mounting Facility Quantity4 SINGLE GROUP
Body Height3.375 INCHES NOMINAL
Winding Quantity1 SINGLE COMPONENT
Dc Resistance Rating In Ohms270.000 SINGLE COMPONENT SINGLE WINDING
Body Width3.500 INCHES NOMINAL
Body StyleBUSHING MOUNTED
Mounting MethodTHREADED BUSHING
Thread Series DesignatorUNS
Nonpile Up Contact Arrangement1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION SINGLE SWITCH UNIT
Contact Load Current Rating At Max10.000 AMPERES RESISTIVE AC
Actuator StyleROUND
Actuator Height0.313 INCHES NOMINAL
Nominal Thread Size0.468 INCHES
Actuator Diameter0.344 INCHES NOMINAL
Vendor Part Numbers22212
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 172B available?
We can source 172B 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 172B by Lucent Technologies Inc. Corporate Headquarters obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 172B 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 172B?
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 172B?
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.