SJ-3543 Equivalent & Substitute Parts

Part Overview

The SJ-3543 is a 4.6mm stereo barrel connector (phone jack) manufactured by CUI Devices, designed for headphone and audio applications. This panel-mount, right-angle connector features three conductors (TRS configuration) with kinked pin termination and is rated for 12VDC at 1A. The part is currently in active production with 1130 units in stock.

Identifying equivalent and substitute parts is necessary when the primary part number becomes unavailable, when alternative packaging options are required, or when sourcing from different inventory locations is needed to meet project timelines and supply chain requirements.

Substiute Parts

SJ-3543

CUI DevicesIn Stock: 1202SJ-3543 Datasheet

Current PartRFQ

SJ1-3543

CUI DevicesIn Stock: 4287SJ1-3543 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The SJ1-3543 qualifies as a direct substitute for the SJ-3543 based on the following critical parameters:

• Connector Type & Mating Diameter: Both parts are 4.6mm stereo phone jacks with identical mechanical interfaces
• Signal Configuration: Both feature 3-conductor TRS (Tip-Ring-Sleeve) stereo configuration
• Contact Count: Both have 3 conductors and 3 contacts
• Mounting & Termination: Both are panel-mount, through-hole, right-angle connectors with kinked pin termination
• Electrical Ratings: Both are rated for 12VDC at 1A
• Operating Temperature: Both operate across -25°C ~ 85°C
• Gender & Shielding: Both are female, unshielded connectors

The primary difference between these parts is the packaging format (SJ1-3543 ships in bag packaging) and series designation (SJ1 versus SJ). These differences do not affect electrical or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the SJ-3543 and SJ1-3543 are active production parts from CUI Devices with full RoHS3 and REACH compliance. Selection between these parts should be based on:

Availability: The SJ1-3543 has significantly higher inventory (4225 units) compared to the SJ-3543 (1130 units), making it the preferred choice for high-volume orders or time-sensitive projects.

Packaging Requirements: If bag packaging is acceptable for your assembly process, the SJ1-3543 is suitable. If standard packaging is required, the SJ-3543 remains the primary option.

Compliance: Both parts meet identical regulatory requirements (RoHS3 Compliant, REACH Unaffected), ensuring no compliance risk when substituting between them.

Electrical & Mechanical Compatibility: The parts are fully interchangeable in all applications where the SJ-3543 was originally specified, with no design modifications required.

Frequently Asked Questions (FAQ)

Q: Can the SJ1-3543 be used as a direct replacement for the SJ-3543?

A: Yes. Both parts are electrically and mechanically identical 4.6mm stereo phone jacks with the same connector type, contact configuration, mounting style, and electrical ratings. The only differences are packaging format and series designation, which do not affect functionality or compatibility.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is determined by: connector type (phone jack stereo), mating diameter (4.6mm), signal configuration (3-conductor TRS), contact count (3), mounting type (panel mount, through hole, right angle), termination style (kinked pin), voltage rating (12VDC), current rating (1A), and operating temperature range (-25°C ~ 85°C). Both parts match all these parameters.

Q: Are there any compliance or certification differences between these parts?

A: No. Both the SJ-3543 and SJ1-3543 are RoHS3 Compliant and REACH Unaffected, ensuring identical regulatory status and suitability for the same applications.

Q: What is the difference between the SJ and SJ1 series designations?

A: The series designation reflects internal CUI Devices product line organization. From an engineering perspective, the SJ1-3543 is a direct equivalent to the SJ-3543 with identical electrical and mechanical specifications.

Q: Does packaging format affect connector performance?

A: No. The SJ1-3543 ships in bag packaging while the SJ-3543 uses standard packaging. This difference is purely logistical and does not affect electrical performance, mechanical fit, or reliability.

Q: What is the mating length/depth of these connectors?

A: The mating length/depth is 0.551" (14.00mm) for both parts, ensuring identical panel mounting depth and PCB clearance requirements.

Q: Are these connectors suitable for high-frequency audio applications?

A: Both parts are rated for audio applications with a maximum frequency capability determined by their unshielded design and 1A current rating at 12VDC. Application-specific frequency requirements should be evaluated against your circuit design.