EIKO · Electronic Components
1821
#1821 LAMP T-3 1/4 28V 170MA MINIATURE SCREW BASE
Part Number1821
ManufacturerEIKO
AvailabilityAvailable to order — request a quote
Specifications
NSN5950-01-095-6269 (NSN)
Federal Item NameTRANSFORMER,POWER
Federal Supply Class5950 — Coils and Transformers
Reliability IndicatorNOT ESTABLISHED
Nominal Thread Size0.112 INCHES SINGLE GROUP
Inclosure TypeFULLY INCLOSED
Mounting Facility Quantity4 SINGLE GROUP
Winding Operating Current500.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
Thread Quantity Per Inch40 SINGLE GROUP
Winding Function And Quantity2 PRIMARY AND 3 SECONDARY SINGLE COMPONENT
Body Length1.590 INCHES NOMINAL
Input Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Center To Center Distance Between1.093 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP
Maximum Operating Temp105.0 CELSIUS
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 1821 available?
We can source 1821 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 1821 by EIKO obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 1821 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 1821?
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 1821?
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.