MIL-SPEC · Electronic Components
RN70C4221F
Resistor, Fixed, Film
Part NumberRN70C4221F
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5905-00-752-3610 (NSN)
Federal Item NameRESISTOR,FIXED,FILM
Federal Supply Class5905 — Resistors
Ambient Temp In Deg Celsius At Zer175.0
Temp Range Of Temp Coefficient In-55.0 TO 175.0
Electrical Resistance4.220 KILOHMS
Resistance Tolerance In Percent-1.000 TO 1.000
Inclosure TypeENCAPSULATED
Temp Coefficient Of Resistance In-50.0 TO 50.0
Ambient Temp At Full Rated Power125.0 CELSIUS
Test Data Document81349-MIL-R-10509/3 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE
Terminal TypeWIRE LEAD
Body Length0.750 INCHES NOMINAL
Body Diameter0.250 INCHES NOMINAL
Cancelled NSN5905-00-755-8859 (cancelled)
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 RN70C4221F available?
We can source RN70C4221F 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 RN70C4221F by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If RN70C4221F 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 RN70C4221F?
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 RN70C4221F?
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.