Motorola Solutions, Inc. · Electronic Components
PMMN4057
Loudspeaker-Microphone
Part NumberPMMN4057
ManufacturerMotorola Solutions, Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5965-01-647-3175 (NSN)
Federal Item NameLOUDSPEAKER-MICROPHONE
Federal Supply Class5965 — Headsets, Microphones, and Speakers
Impedance Rating In Ohms4.0 VOICE COIL NOMINAL
Installation DesignPORTABLE
Usage DesignINDOOR
Horn Mounting FacilitySNAP FASTENER(S)
Body Diameter45.0 MILLIMETERS NOMINAL
ESD/EMICode A — ESD/EMI sensitive item
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 PMMN4057 available?
We can source PMMN4057 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 PMMN4057 by Motorola Solutions, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If PMMN4057 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 PMMN4057?
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 PMMN4057?
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.