MIL-SPEC · Electronic Components
RTH42ES500K
Resistor, Thermal
Part NumberRTH42ES500K
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5905-01-271-8106 (NSN)
Federal Item NameRESISTOR,THERMAL
Federal Supply Class5905 — Resistors
Maximum Power Dissipation Rating250.00 MILLIWATTS
Temp Points For Resistance Reading75.0 CELSIUS FOURTH RESISTANCE-TEMPERATURE POINT
Body Length0.270 INCHES MINIMUM AND 0.300 INCHES MAXIMUM
Reference Temp In Deg Celsius25.0
Resistance Tolerance At A Specifie-20.0 TO 20.0 FIRST RESISTANCE-TEMPERATURE POINT
Test Data Document81349-MIL-T-23648 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DA
Zero Power Resistance At Specified77.3 OHMS FIFTH RESISTANCE-TEMPERATURE POINT
Zero Power Resistance Tolerance In-10.0 TO 10.0
Inclosure TypeENCAPSULATED
Zero Power Resistance50.000 OHMS
Style DesignatorROD
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 RTH42ES500K available?
We can source RTH42ES500K 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 RTH42ES500K by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If RTH42ES500K 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 RTH42ES500K?
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 RTH42ES500K?
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.