Frequency Selective Networks · Electronic Components
A-490-1
Delay Line — Miscellaneous Electrical Components
Part NumberA-490-1
ManufacturerFrequency Selective Networks
AvailabilityAvailable to order — request a quote
Specifications
NSN5999-01-201-0403 (NSN)
Federal Item NameDELAY LINE
Federal Supply Class5999 — Miscellaneous Electrical Components
Attenuation In Decibels32.000
Body Depth3.880 INCHES NOMINAL
Mounting FacilityTHREADED INSERT
Frequency Rating1.800 KILOHERTZ MINIMUM AND 7.400 KILOHERTZ MAXIMUM
Voltage Rating1.000 MILLIVOLTS MINIMUM AND 4.000 VOLTS MAXIMUM
Body StyleRECTANGULAR, FRONT CONNECTION
Operating Temp Range+0.0 TO 60.0 CELSIUS
Output Impedance Rating500.000 OHMS
Body Width1.500 INCHES NOMINAL
Input Impedance Rating19500.000 OHMS
Individual Section Quantity9
Vendor Part Numbers1207929-1
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 A-490-1 available?
We can source A-490-1 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 A-490-1 by Frequency Selective Networks obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If A-490-1 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 A-490-1?
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 A-490-1?
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.