MIL-SPEC · Electronic Components
MFA405
Resistor, Fixed, Wire Wound
Part NumberMFA405
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5905-00-101-0743 (NSN)
Federal Item NameRESISTOR,FIXED,WIRE WOUND
Federal Supply Class5905 — Resistors
Terminal TypeFERRULE
Cubic Measure15.265 CUBIC INCHES
Body Length9.755 INCHES MINIMUM AND 9.818 INCHES MAXIMUM
Inclosure TypeENCAPSULATED
Power Dissipation Rating In Watts4.000 FREE AIR
Ambient Temp At Full Rated Power85.0 CELSIUS
Body Diameter1.375 INCHES MINIMUM AND 1.407 INCHES MAXIMUM
Ambient Temp In Deg Celsius At Zer110.0
Temp Range Of Temp Coefficient In-55.0 TO 110.0
Reliability IndicatorNOT ESTABLISHED
Test Data Document81349-MIL-R-29 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA
Cancelled NSN5905-00-518-7774 (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 MFA405 available?
We can source MFA405 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 MFA405 by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If MFA405 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 MFA405?
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 MFA405?
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.