MIL-SPEC · Electronic Components
DA256U
Dummy Load, Electrical
Part NumberDA256U
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-00-891-8028 (NSN)
Federal Item NameDUMMY LOAD,ELECTRICAL
Federal Supply Class5985 — Antennas and Waveguides
Cooling MethodSELF-COOLED
Frequency Range Rating+400.000 TO 450.000 MEGAHERTZ
Termination TypeWAVEGUIDE FLANGE
Body Height9.437 INCHES MINIMUM AND 9.687 INCHES MAXIMUM
Style DesignatorWAVEGUIDE MOUNTED
Body Width12.438 INCHES MINIMUM AND 12.562 INCHES MAXIMUM
Impedance Rating In Ohms50.0 NOMINAL
Operating PositionALL POSITIONS
Overall Length36.344 INCHES MINIMUM AND 36.844 INCHES MAXIMUM
Power Rating225.000 KILOWATTS PEAK AND 4.000 KILOWATTS AVERAGE
Vendor Part Numbers4401F0235
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 DA256U available?
We can source DA256U 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 DA256U by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If DA256U 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 DA256U?
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 DA256U?
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.