Welwyn Components · Electronic Components
W21-1200HMS
Resistor, Fixed, Wire Wound
Part NumberW21-1200HMS
ManufacturerWelwyn Components
AvailabilityAvailable to order — request a quote
Specifications
NSN5905-00-008-1564 (NSN)
Federal Item NameRESISTOR,FIXED,WIRE WOUND
Federal Supply Class5905 — Resistors
Style DesignatorAXIAL TERMINAL EACH END
Power Dissipation Rating In Watts2.5000 FREE AIR
Terminal TypeWIRE LEAD
Temp Range Of Temp Coefficient In-55.0 TO 350.0
Body Length0.500 INCHES NOMINAL
Body Diameter0.219 INCHES NOMINAL
Ambient Temp In Deg Celsius At Zer350.0
Terminal Length1.500 INCHES NOMINAL
Reliability IndicatorNOT ESTABLISHED
Inclosure TypeENCAPSULATED
Ambient Temp At Full Rated Power70.0 CELSIUS
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 W21-1200HMS available?
We can source W21-1200HMS 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 W21-1200HMS by Welwyn Components obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If W21-1200HMS 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 W21-1200HMS?
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 W21-1200HMS?
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.