Liquid Controls · Electronic Components
E4040
Keyboard, Data Entry
Part NumberE4040
ManufacturerLiquid Controls
AvailabilityAvailable to order — request a quote
Specifications
NSN5999-01-663-5743 (NSN)
Federal Item NameKEYBOARD,DATA ENTRY
Federal Supply Class5999 — Miscellaneous Electrical Components
Operating Temp Range-22.0 TO 158.0 FAHRENHEIT
Interface TypeRS 232C
Unit DesignCABINET
Overall Width5.20 INCHES NOMINAL
Features ProvidedLCD DISPLAY
Overall Height1.55 INCHES NOMINAL
Key TypePUSH BUTTON
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 E4040 available?
We can source E4040 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 E4040 by Liquid Controls obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If E4040 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 E4040?
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 E4040?
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.