Time Mark Corp. · Electronic Components
A257B
Monitor, Voltage Deviation
Part NumberA257B
ManufacturerTime Mark Corp.
AvailabilityAvailable to order — request a quote
Specifications
NSN6110-01-386-8991 (NSN)
Federal Item NameMONITOR,VOLTAGE DEVIATION
Federal Supply Class6110 — Electrical Control Equipment
Circuit Construction TypeSOLID STATE
Control TypeLOCAL
Operating Control MethodAUTOMATIC
Frequency Adjustment TypeCONTINUOUS
Vendor Part Numbers303-9009-01 ITEM 3
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 A257B available?
We can source A257B 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 A257B by Time Mark Corp. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If A257B 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 A257B?
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 A257B?
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.