SOLID STATE · Diodes / Rectifiers
85HF40
DIODE; 85A IF; 400V; 0.35K/W; 1800 A @ 8.3 MS IFMS; 9MA IR; DO-203AB (DO-5)
Part Number85HF40
ManufacturerSOLID STATE
AvailabilityAvailable to order — request a quote
Specifications
NSN5961-00-313-7313 (NSN)
Federal Item NameSEMICONDUCTOR DEVICE,DIODE
MaterialSILICON SEMICONDUCTOR; GLASS ENCLOSURE
Current Rating85.00 AMPERES NOMINAL FORWARD CURRENT, AVERAGE AND 1500.00 AMPERES MAXIMUM PEAK FORWARD SURGE CURRENT
Terminals1 TAB, SOLDER LUG AND 1 THREADED STUD
Mounting MethodTHREADED STUD(S)
Overall Length1.450 INCHES MAXIMUM
Features ProvidedHERMETICALLY SEALED CASE
Nominal Thread Size0.250 INCHES
Electrode Internally ElectricallyCATHODE
Overall Width Across Flats0.687 INCHES MAXIMUM
Function For Which DesignedRECTIFIER
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 85HF40 available?
We can source 85HF40 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 85HF40 by SOLID STATE obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 85HF40 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 85HF40?
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 85HF40?
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.