SP-3501 Equivalent & Substitute Parts Reference

Part Overview

The SP-3501 is a 4.6mm stereo phone plug connector manufactured by CUI Devices, designed for headphone and audio applications. It features a male gender configuration with three conductors (TRS - Tip, Ring, Sleeve) for stereo signal transmission. The connector utilizes solder termination and includes strain relief with a free-hanging in-line mounting type.

The SP-3501 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for systems utilizing this connector type.

Substiute Parts

SP-3501

CUI DevicesIn Stock: 1000SP-3501 Datasheet

Current PartRFQ

4832.1311

SCHURTER Inc.In Stock: 28264832.1311 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SP-3501 is determined by strict alignment with the following core parameters:

• Connector type must be Phone Plug
• Gender configuration must be Male
• Signal lines must be Stereo (3 Conductor, TRS)
• Mating diameter must be 4.60mm (0.141", 1/8", Mini Plug)
• Number of positions/contacts must be 3 Conductors, 3 Contacts
• Termination method must be Solder
• Mounting type must be Free Hanging (In-Line)
• RoHS compliance status must be ROHS3 Compliant

The substitute part 4832.1311 (SCHURTER Inc.) meets all mandatory substitution criteria. Variations in shielding configuration, operating temperature range, and voltage/current ratings represent allowable differences within the barrel connector category for this application class.

Parameter Comparison

Engineering Selection Recommendations

The 4832.1311 (SCHURTER Inc., Series 4832) qualifies as a direct substitute for the obsolete SP-3501. Both parts maintain identical mechanical and electrical interface specifications for 4.6mm stereo phone plug applications.

Key selection factors:

• The SP-3501 is obsolete; the 4832.1311 carries active product status with 2777 units in stock versus 946 units for the SP-3501
• Both parts are ROHS3 compliant and carry identical ECCN and HTSUS classifications
• The 4832.1311 provides shielded configuration compared to the unshielded SP-3501, offering enhanced noise immunity in audio signal paths
• Operating temperature range for 4832.1311 is -20°C ~ 70°C versus -20°C ~ 85°C for SP-3501; applications requiring operation above 70°C must retain the SP-3501
• The 4832.1311 specifies 30VAC/DC rated voltage and 500mA current capacity, providing defined electrical performance parameters

For new designs or applications without temperature constraints exceeding 70°C, the 4832.1311 is the preferred selection due to active product status and superior inventory availability.

Frequently Asked Questions (FAQ)

Q: Can the 4832.1311 be used as a direct replacement for SP-3501 in existing assemblies?

A: Yes, provided the application operating temperature does not exceed 70°C. Both connectors share identical mechanical dimensions (4.60mm mating diameter, 0.551" mating depth), contact configuration (3 conductors, TRS), and termination method (solder). Physical interchangeability is confirmed.

Q: What is the significance of shielding differences between these parts?

A: The SP-3501 is unshielded while the 4832.1311 is shielded. Shielding reduces electromagnetic interference and crosstalk in audio signal transmission. For noise-sensitive applications, the shielded 4832.1311 is preferred. For applications where shielding is not required, both perform equivalently.

Q: Are there temperature-related constraints for substitution?

A: Yes. The SP-3501 operates across -20°C ~ 85°C while the 4832.1311 operates across -20°C ~ 70°C. Applications requiring sustained operation above 70°C must use the SP-3501. Applications within the -20°C ~ 70°C range can use either part.

Q: What packaging considerations apply to these parts?

A: The SP-3501 is supplied in unspecified packaging with 946 units in stock. The 4832.1311 is supplied in bulk packaging with 2777 units in stock. Both include 2 pieces per package (1 connector, 1 handle).

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both the SP-3501 and 4832.1311 are ROHS3 compliant. The 4832.1311 additionally carries REACH Unaffected status. Both share identical ECCN (EAR99) and HTSUS (8536.69.8000) classifications.