● ISO 9001:2015 · ANSI/ESD S20.20-2021 · ERAI Member · GIDEP · Woman-Owned Small Business 760.724.2800 · 855.RH.HAS.IT · info@rhelectronics.com
Surface Combustion Inc.  · Electronic Components

77A11

Filter, Radio Frequency Interfere

Part Number77A11
ManufacturerSurface Combustion Inc.
AvailabilityAvailable to order — request a quote

Specifications

Federal Item NameFILTER,RADIO FREQUENCY INTERFERE
Federal Supply Class5915 — Filters and Networks
Operating Current Rating Per Funct5.0 BLANK LOCATION NOT OTHERWISE SPECIFIED
Functional Terminal Type And Quant1 WIRE LEAD OUTPUT SECOND FUNCTION
Nominal Thread Size0.190 INCHES
Style DesignatorRECTANGULAR TERMINAL/TERMINALS ON OPPOSITE SURFACES
Mounting Facility Screw Thread SerUNF
Body Height1.910 INCHES MINIMUM AND 1.970 INCHES MAXIMUM
Overall Length3.940 INCHES MINIMUM AND 4.000 INCHES MAXIMUM
Body Width2.470 INCHES MINIMUM AND 2.750 INCHES MAXIMUM
Distance Between Centerlines Of Mo3.365 INCHES MINIMUM AND 3.385 INCHES MAXIMUM
Load Impedance Per Function50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
Operating Voltage Rating And Type50.0 VOLTS DC BLANK LOCATION NOT OTHERWISE SPECIFIED
Vendor Part Numbers77A1, NF202
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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

Frequently asked

Is 77A11 available?
We can source 77A11 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 77A11 by Surface Combustion Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 77A11 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 77A11?
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 77A11?
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.