Product Description: PJ-328 Series – 3.5mm TRS Stereo Audio Jack (SMT, Right Angle)

The PJ-328 series is a high-performance, surface-mount 3.5mm phone connector designed for modern compact electronic devices requiring reliable stereo audio transmission and power switching capabilities. Engineered as a direct form-fit-function alternative to the Samesky (CUI) SJ2-359X-SMT series (specifically SJ2-3593B-SMT-TR and SJ2-3593D-SMT-TR), this jack delivers identical industry-leading dimensions, electrical performance, and mechanical endurance.

Configuration & Mechanical Design
This connector features a TRS (Tip-Ring-Sleeve) 3-pole configuration, supporting standard stereo audio signals. Its right-angle, surface-mount design allows for low-profile integration onto PCBs, ideal for space-constrained applications such as portable media players, laptops, communication equipment, and medical devices. The robust housing is molded from PA6T (Polyamide 6T), a high-heat-resistant thermoplastic that ensures dimensional stability during reflow soldering processes. All terminals are crafted from Phosphor bronze with a durable gold (Au) plating, guaranteeing superior conductivity, corrosion resistance, and insertion smoothness. The jack is rated for a mechanical life cycle of 5,000 insertions.

Electrical Ratings & Switch Options
The PJ-328 is power rated at DC 12V 1A, making it capable of handling not only low-level audio signals but also power distribution in certain designs. Users can select between two normally-open switching configurations to suit circuit detection needs:

• Tip Switch Only: Detects only the insertion of a plug tip.
• Tip & Ring Switch: Provides independent detection on both tip and ring contacts, enabling advanced functions like stereo plug identification or device wake-up.

Compatibility & Value
With identical PCB footprint, pinout, and performance characteristics to the Samesky SJ2-3593B/D-SMT-TR, the PJ-328 series offers a reliable, cost-effective drop-in replacement without design modifications. Whether for consumer electronics or industrial controls, the PJ-328 delivers proven audio connectivity with superior longevity.

RFQs :

Q1: Can you share drawing of jack with Tip & Ring Switch ?

A1: Yes, I will update and send you drawing.

Q2: Do you have this Jack with Through Hole Version ?

A2: yes, here is link of the headphone connector with THT Hole version : https://www.jbl-ec.com/pj-328a-trs-3-5mm-audio-jack-through-hole-right-angle-product/

Q3: Can you share stp file of this audio jack

A3: Yes, I can.  Kindly send me E-mail at : jbl09@jblec.com

Q4: Is this part PJ-328 same with CUI jack SJ2-3593B-SMT-TR ?

A4:  almost 1:1 same.

Datasheets :