TT Electronics/Optek Technology · Electronic Components
4N49
OPTOISOLATOR HERMETIC SEAL TO-78
Part Number4N49
ManufacturerTT Electronics/Optek Technology
AvailabilityAvailable to order — request a quote
Specifications
NSN5330-01-107-3603 (NSN)
Federal Item NameGASKET
Overall Length2.237 INCHES NOMINAL
Overall Width0.880 INCHES NOMINAL
Aperture Diameter0.440 INCHES NOMINAL
Cross Sectional Shape StyleSOLID SINGLE OR COMPOSITION
Bolt Hole Quantity1
Cross Sectional Thickness0.031 INCHES NOMINAL
Federal Supply Class5330 — Packing And Gasket Materials
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 4N49 available?
We can source 4N49 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 4N49 by TT Electronics/Optek Technology obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 4N49 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 4N49?
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 4N49?
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.