BG Laboratories · Electronic Components
A109
Transformer, Audio Frequency
Part NumberA109
ManufacturerBG Laboratories
AvailabilityAvailable to order — request a quote
Specifications
NSN5950-00-443-8551 (NSN)
Federal Item NameTRANSFORMER,AUDIO FREQUENCY
Federal Supply Class5950 — Coils and Transformers
Body Height2.500 INCHES NOMINAL
Center To Center Distance Between1.875 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP
Frequency Rating400.0 HERTZ NOMINAL SINGLE COMPONENT
Inclosure TypeFULLY INCLOSED
Thread Quantity Per Inch32 SINGLE GROUP
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Body Length3.000 INCHES NOMINAL
Body Width1.624 INCHES NOMINAL
Nominal Thread Size0.138 INCHES SINGLE GROUP
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Terminal Type And Quantity1 CONNECTOR, RECEPTACLE
Vendor Part Numbers7865
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 A109 available?
We can source A109 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 A109 by BG Laboratories obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If A109 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 A109?
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 A109?
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.