Fairchild Semiconductor · Electronic Components
MMSZ5231B
DIODE ZENER 5.1V 500MW SOD-123
Part NumberMMSZ5231B
ManufacturerFairchild Semiconductor
AvailabilityAvailable to order — request a quote
Specifications
NSN5961-01-443-9465 (NSN)
Federal Item NameSEMICONDUCTOR DEVICE,DIODE
MaterialSILICON SEMICONDUCTOR; PLASTIC ENCLOSURE
Terminals2 PIN
Mounting MethodTERMINAL
Overall Length0.112 INCHES MAXIMUM
Overall Width0.067 INCHES MAXIMUM
Voltage Rating In Volts Per Charac0.9 MAXIMUM FORWARD VOLTAGE, AVERAGE
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 MMSZ5231B available?
We can source MMSZ5231B 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 MMSZ5231B by Fairchild Semiconductor obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If MMSZ5231B 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 MMSZ5231B?
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 MMSZ5231B?
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.