Shallcross · Electronic Components
PR49S18-420
Resistor, Fixed, Wire Wound
Part NumberPR49S18-420
ManufacturerShallcross
AvailabilityAvailable to order — request a quote
Specifications
NSN5905-01-232-5055 (NSN)
Federal Item NameRESISTOR,FIXED,WIRE WOUND
Federal Supply Class5905 — Resistors
Temp Coefficient Of Resistance In-20.0 TO 20.0
Ambient Temp In Deg Celsius At Zer275.0
Style DesignatorAXIAL TERMINAL EACH END
Body Length0.437 INCHES MAXIMUM
Terminal TypeWIRE LEAD
Reactance CharacteristicINDUCTIVE
Inclosure TypeENCASED
Power Dissipation Rating In Watts2.250 FREE AIR
Terminal Length1.250 INCHES MINIMUM
Reliability IndicatorNOT ESTABLISHED
Body Diameter0.059 INCHES MINIMUM AND 0.125 INCHES MAXIMUM
Vendor Part Numbers443-1849-420
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 PR49S18-420 available?
We can source PR49S18-420 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 PR49S18-420 by Shallcross obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If PR49S18-420 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 PR49S18-420?
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 PR49S18-420?
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.