Fairchild Semiconductor · Electronic Components
1N5228B
DIODE ZENER 3.9V 500MW DO-35
Part Number1N5228B
ManufacturerFairchild Semiconductor
AvailabilityAvailable to order — request a quote
Specifications
NSN5961-01-173-1828 (NSN)
Federal Item NameSEMICONDUCTOR DEVICE,DIODE
MaterialPLASTIC ENCLOSURE; SILICON SEMICONDUCTOR
Current Rating20.00 MILLIAMPERES NOMINAL MAXIMUM REVERSE SURGE CURRENT
Terminals2 UNINSULATED WIRE LEAD
Mounting MethodTERMINAL
Overall Length0.300 INCHES MAXIMUM
Overall Diameter0.107 INCHES MAXIMUM
Special Test FeaturesTESTED PER BASE TEN SYSTEMS DWG 20199
Terminal Circle Diameter0.022 INCHES MAXIMUM
Voltage Rating In Volts Per Charac3.9 NOMINAL REGULATOR VOLTAGE, DC
Maximum Operating Temp Per Measure200.0 CELSIUS JUNCTION
Federal Supply Class5961 — Semiconductor Devices And Associated Hardware
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 1N5228B available?
We can source 1N5228B 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 1N5228B by Fairchild Semiconductor obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 1N5228B 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 1N5228B?
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 1N5228B?
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.