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CUI Devices SP-3540A — Audio Connectors

SP-3540A CUI Devices 3.5mm Audio Plug, 4 Conductor, Active

MPNSP-3540A
Active

CUI Devices audio plug, SP-3540A, male, 4 conductors (TRRS), 3.50 mm industry mating diameter, 1 A, 12 VDC, nickel-plated contacts, free-hanging, solder termination.

$2.3100Ref. price · indicative, final on quote
CUI Devices SP-3540A datasheet (PDF)
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SP-3540A key specifications
ParameterValue
MountingFree Hanging (In-Line)
Connector typePhone Plug
Voltage - rated12VDC
Current rating1 A
Cable opening0.217\" (5.50mm)
Operating temperature-25°C~70°C
Body colorSilver, Black
Body materialBrass
Contact materialBrass
Housing materialAcrylonitrile Butadiene Styrene (ABS)
Insulation colorBlack
Mating length (Depth)0.551\" (14.00mm)

All specifications

SP-3540A additional specifications
ParameterValue
Contact material - platingNickel
GenderMale
PackageBag
FeaturesCover
Includes2 pcs - 1 Connector, 1 Cover
ShieldingUnshielded
TerminationSolder
Signal linesStereo (4 Conductor, TRRS)
Actual diameter0.126\" (3.20mm)
Internal switchDoes Not Contain Switch
Number of positions (Contacts)4 Conductors, 4 Contacts
Industry recognized mating diameter3.50mm (0.141\", 1/8\", Mini Plug) - Headphone

Product details

3.5 mm TRRS plug with nickel contacts

The SP-3540A is CUI Devices' 4-conductor (TRRS) 3.50 mm male phone plug, free-hanging with solder termination and nickel-plated brass contacts. Rated 1 A at 12 VDC, the plug carries stereo audio plus a microphone channel on the TRRS tip-ring-ring-sleeve arrangement.

Housing and cable-entry dimensions

The ABS housing is black with a brass body and a 0.217" (5.50 mm) cable opening; the mating length is 0.551" (14.00 mm). Operating temperature spans -25°C to 70°C; the plug includes a cover and ships in a bag with two pieces — one connector, one cover.

Frequently asked questions

What compliance documentation does CUI Devices provide for SP-3540A?

The SP-3540A is ROHS3 compliant per CUI Devices.