Northrop Grumman Systems Corporation · Electronic Components
15A490-1
Synchro, Differential Transmitter
Part Number15A490-1
ManufacturerNorthrop Grumman Systems Corporation
AvailabilityAvailable to order — request a quote
Specifications
NSN5990-01-233-4178 (NSN)
Federal Item NameSYNCHRO,DIFFERENTIAL TRANSMITTER
Federal Supply Class5990 — Synchros and Resolvers
Body Diameter3.0980 INCHES MINIMUM AND 3.1000 INCHES MAXIMUM
Body StyleSTANDARD ROUND, ROTATABLE HOUSING
Flange Thickness0.2490 INCHES MINIMUM AND 0.2510 INCHES MAXIMUM
Shoulder Diameter2.7000 INCHES MAXIMUM
Overall Length5.5100 INCHES MAXIMUM
Frequency In Hertz60.0 NOMINAL
Length1.2400 INCHES MAXIMUM SHOULDER
Body Size3
Stator Input Voltage Rating In Vol90.0 NOMINAL
Shaft Diameter0.2498 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM SINGLE SHAFT
Fragility FactorMODERATELY RUGGED
Vendor Part Numbers99X146 PIECE 9
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 15A490-1 available?
We can source 15A490-1 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 15A490-1 by Northrop Grumman Systems Corporation obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 15A490-1 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 15A490-1?
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 15A490-1?
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.