Bradford Vibrators · Electronic Components
4870
Earphone Element
Part Number4870
ManufacturerBradford Vibrators
AvailabilityAvailable to order — request a quote
Specifications
NSN5965-00-280-7816 (NSN)
Federal Item NameEARPHONE ELEMENT
Federal Supply Class5965 — Headsets, Microphones, and Speakers
Acoustic Sensitivity Reference RatNOT RATED
Earphone Element TypeMAGNETIC
Impedance Rating In Ohms1024.0 NOMINAL
Overall Diameter1.736 INCHES NOMINAL
Body StyleEARPHONE ELEMENT, CIRCULAR
Earphone Element Depth0.734 INCHES NOMINAL
Vendor Part NumbersANDTYPETS10
Winding Quantity3 SINGLE COMPONENT
Winding Conductor Size0.01594 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE WINDING
Turn Quantity21 SINGLE COMPONENT SECOND SECONDARY
Inclosure TypeOPEN
Rating MethodWINDING TURNS SINGLE COMPONENT ALL WINDING
Mounting MethodTERMINAL SINGLE GROUP
Terminal Type And Quantity6 WIRE LEAD
Overall Length0.500 INCHES NOMINAL
Reliability IndicatorNOT ESTABLISHED
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 4870 available?
We can source 4870 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 4870 by Bradford Vibrators obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 4870 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 4870?
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 4870?
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.