SJ-3544 Equivalent & Substitute Parts

Part Overview

The SJ-3544 is a 4.6mm stereo phone jack connector manufactured by CUI Devices, designed for headphone and audio applications. It features a right-angle, through-hole mounting configuration with kinked pin termination and thread lock functionality. The connector accommodates 3 conductors (TRS configuration) with a single internal switch and operates across a temperature range of -25°C to 85°C at 12VDC with 1A current rating.

The SJ-3544 is classified as obsolete. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for applications requiring this connector type.

Substiute Parts

SJ-3544

CUI DevicesIn Stock: 981SJ-3544 Datasheet

Current PartRFQ

SJ1-3544

CUI DevicesIn Stock: 2576SJ1-3544 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SJ-3544 is determined by strict alignment of the following critical parameters:

• Mating diameter: 4.60mm (0.141", 1/8", Mini Plug) headphone standard
• Signal configuration: Stereo (3 Conductor, TRS)
• Contact count: 3 Conductors, 4 Contacts
• Mounting configuration: Through Hole, Right Angle
• Termination method: Kinked Pin
• Internal switch: Single Switch
• Panel hole size: 0.236" (5.99mm)
• Thread size: M6
• Operating temperature range: -25°C ~ 85°C
• Voltage rating: 12VDC
• Current rating: 1 A

The SJ1-3544 meets all substitution criteria. It maintains identical electrical and mechanical specifications while offering enhanced availability and active product status.

Parameter Comparison

Engineering Selection Recommendations

The SJ1-3544 is the direct substitute for the obsolete SJ-3544. Both connectors share identical electrical and mechanical specifications, ensuring functional compatibility in existing designs.

The SJ1-3544 offers the following advantages:

• Active product status with confirmed inventory availability
• ROHS3 compliance, meeting current environmental and regulatory standards
• Enhanced contact plating (Nickel and Tin) compared to Nickel-only plating on the SJ-3544
• Includes mounting hardware (connector and nut) as standard
• Mating length specification provided (0.551" / 14.00mm)

For applications requiring RoHS compliance or long-term supply assurance, the SJ1-3544 is the appropriate selection. The connector maintains full electrical and mechanical interchangeability with the SJ-3544.

Frequently Asked Questions (FAQ)

Q: Can the SJ1-3544 directly replace the SJ-3544 in existing designs?

A: Yes. Both connectors maintain identical mating diameter (4.60mm), signal configuration (Stereo TRS), contact count (3 Conductors, 4 Contacts), mounting type (Through Hole, Right Angle), termination method (Kinked Pin), and electrical ratings (12VDC, 1A). Panel hole size (0.236" / 5.99mm) and thread size (M6) are identical.

Q: What is the difference in packaging between these connectors?

A: The SJ-3544 is supplied without specified packaging. The SJ1-3544 is supplied in bag packaging and includes mounting hardware (1 connector and 1 nut per package).

Q: Are there compliance differences between the SJ-3544 and SJ1-3544?

A: Yes. The SJ-3544 is RoHS non-compliant. The SJ1-3544 is ROHS3 compliant and REACH unaffected. For applications subject to environmental regulations, the SJ1-3544 is required.

Q: What is the mating length specification for the SJ1-3544?

A: The SJ1-3544 has a mating length of 0.551" (14.00mm). This specification is not provided for the SJ-3544.

Q: Are the contact materials identical?

A: Both connectors use Brass contact material. The SJ-3544 specifies Nickel plating. The SJ1-3544 specifies Nickel and Tin plating, providing enhanced corrosion resistance.

Q: What is the product status difference?

A: The SJ-3544 is classified as obsolete with limited inventory (890 pcs). The SJ1-3544 is active with higher inventory availability (2490 pcs).