STX-3120-5B Kycon Connector (Other) In Stock
Kycon STX-3120-5B is a 3.5 mm stereo audio jack connector with 5 positions, PCB-mount through-hole termination, and PBT glass-fiber reinforced housing, providing durable and reliable audio connectivity for consumer electronics and professional audio equipment.
- Manufacturer
- Kycon
- Package
- Other
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- STX-3120-5B Datasheet PDF
- Category
- Connector
- Price
- From $0.4789(MOQ 500)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of STX-3120-5B?
- 3.5 mm TRS stereo audio jack with 5-position contact layout for tip, ring, sleeve, and switching contacts
- PCB-mount through-hole design enabling secure mechanical anchoring during audio connector mating cycles
- PBT GF (glass fiber reinforced polybutylene terephthalate) housing offering superior heat and chemical resistance
- 5-contact switching configuration supporting insertion detection and automatic headphone/speaker switching
- Compact PCB footprint compatible with consumer electronics, portable audio, and industrial HMI panel designs
What is STX-3120-5B used for?
The STX-3120-5B is used in laptop audio panels, desktop PC front panels, portable audio players, and industrial HMI equipment where a reliable 3.5 mm stereo headphone or line-in jack with PCB mounting is needed. Its 5-position switching contact design makes it ideal for automatic speaker mute detection, headset insertion sensing, and dual-function audio input/output circuits.
What are the specifications of STX-3120-5B?
| YTEOL | 7 |
| Connector Type | 3.5 MM AUDIO |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8536.69.40.10 |
| Country of Origin | Taiwan |
Where can I find the STX-3120-5B datasheet?
STX-3120-5B Datasheet DownloadOfficial datasheet from Kycon
What are equivalent replacements for STX-3120-5B?
Compatible alternatives and drop-in replacements for STX-3120-5B:
suggested
suggested
Frequently Asked Questions
How many positions does the STX-3120-5B have, and what is the function of the extra switching contacts?
The STX-3120-5B features 5 positions: tip (left audio), ring (right audio), sleeve (ground), and 2 additional switching contacts that open or close upon plug insertion. These switching contacts enable automatic speaker mute or headphone detection functions without additional external circuitry on the PCB.
What material is the STX-3120-5B housing made from, and why does it matter for durability?
The STX-3120-5B uses PBT GF (glass fiber reinforced polybutylene terephthalate) for its housing, which offers a heat deflection temperature above 200°C and excellent chemical resistance. This makes it significantly more robust than standard nylon housings, important for PCB assembly reflow soldering at up to 260°C and long-term mechanical durability in audio equipment.
In which consumer and professional audio PCB designs is the STX-3120-5B commonly deployed?
The STX-3120-5B is commonly used in laptop motherboard audio sections, desktop PC front-panel audio headers, portable media players, and industrial HMI audio panels. Its 3.5 mm stereo format with 5 switching positions supports both standard headphone output and automatic headset detection at signal levels from 0 to 3.3 V or 5 V.
How does the through-hole PCB mount of the STX-3120-5B compare to SMT audio jacks for mechanical reliability?
The STX-3120-5B uses through-hole PCB mounting, which provides 3 to 5 times greater pull-out force resistance compared to SMT audio jacks. This mechanical advantage is critical for 3.5 mm audio connectors, which experience repetitive plug insertion and extraction cycles that can lift SMT pads over thousands of uses.
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Why Buy from FindMyChip
About Kycon
Kycon is a leading electronic component manufacturer. FindMyChip sources Kycon ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 500+ | $0.5410 | $270.50 |
| 2500+ | $0.5327 | $1331.80 |
| 6000+ | $0.4823 | $2893.80 |
| 14500+ | $0.4789 | $6944.05 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”
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