Quality Thermistor, Inc. · Electronic Components
QTM12-220K
Resistor, Thermal
Part NumberQTM12-220K
ManufacturerQuality Thermistor, Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5905-00-899-9701 (NSN)
Federal Item NameRESISTOR,THERMAL
Federal Supply Class5905 — Resistors
Zero Power Resistance Tolerance In-10.0 TO 10.0
Body Length0.391 INCHES MINIMUM AND 0.421 INCHES MAXIMUM
Ambient Temp At Full Rated Power100.0 CELSIUS
Zero Power Resistance22.000 OHMS
Zero Power Temp Coefficient Of Res0.70
Body Outside Diameter0.125 INCHES MINIMUM AND 0.155 INCHES MAXIMUM
Maximum Operating Temp150.0 CELSIUS
Maximum Power Dissipation Rating125.00 MILLIWATTS
Terminal Diameter0.025 INCHES NOMINAL
Thermal Time Constant In Seconds34.8
Inclosure TypeENCAPSULATED
Vendor Part NumbersDS125-220K
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 QTM12-220K available?
We can source QTM12-220K 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 QTM12-220K by Quality Thermistor, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If QTM12-220K 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 QTM12-220K?
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 QTM12-220K?
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.