ST229L
Product Features
- Secure, No-Loosen Fit: Precision-finished threading keeps the nut locked tight, avoiding the loose-connection issues common with standard jacks.
- Reliable Signal Transfer: Low contact resistance (≤10 mΩ) and high insulation resistance (>1000 MΩ) ensure clean, stable audio signal with minimal loss.
- Built to Last: Rated for over 1000 mating cycles, making it durable enough for frequent plugging and unplugging in live or studio use.
- Smooth, Comfortable Plug-In: Controlled insertion force (≤40 N) allows easy connection without excessive resistance or strain.
- Corrosion-Resistant Contacts: Brass contacts with tin plating maintain consistent conductivity and resist wear over time.
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Details
| Electrical Parameters | |
| Contact Resistance | ≤ 10 mΩ |
| Insulation Resistance | > 1000MΩ |
| Mechanical Parameters | |
| Service Life | > 1000 mating cycles |
| Insertion force | ≤ 40 N |
| Material and Environmental Parameters | |
| Contacts | Brass |
| Contact surface | Sn |
| Temperature range | -20°C ~ +65°C |
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Description
The ST229L is a 6.35mm (1/4″) unswitched mono jack socket engineered for reliable panel-mount audio connections. Built with precision-finished threading, the ST229L ensures a secure, long-lasting fit between the nut and thread, eliminating the loosening common in lower-quality connectors. With brass contacts finished in tin for consistent conductivity, low contact resistance, and high insulation resistance, this jack is well suited for professional audio equipment, musical instrument interfaces, pedal boards, amplifiers, and other applications requiring a dependable 1/4″ connection point.
Key Features
- Unswitched Mono Design: A straightforward 6.35mm mono jack with no internal switch, ideal for simple signal pass-through applications.
- Precision-Finished Threading: Finely machined threads keep the nut tightly combined with the socket, preventing loosening over time.
- Low Contact Resistance: Contact resistance of ≤ 10 mΩ ensures minimal signal loss at the connection point.
- High Insulation Resistance: Insulation resistance greater than 1000 MΩ supports strong electrical isolation and signal integrity.
- Controlled Insertion Force: Insertion force of ≤ 40 N provides a smooth, comfortable plug-in experience without excessive resistance.
Material and Environmental Specifications
- Contact Material: Brass contacts provide strong mechanical durability and reliable conductivity.
- Contact Surface Plating: Tin (Sn) plating on the contact surface supports stable, corrosion-resistant conductivity over time.
- Operating Temperature Range: Rated for use from -20°C to +65°C, suitable for a wide range of indoor and semi-outdoor environments.
Packaging and Accessories
- Individual Bagging: Each unit is packaged 1 pc per bag, including one socket, one gasket, and one nut.
- Carton Configuration: Packed 100 pcs per inner carton, with 5 inner cartons per master carton, totaling 500 pcs per master carton.
- Included Accessories: Ships complete with a spacer and nut for straightforward panel installation.
Product Dimensions
- Compact Panel-Mount Footprint: Overall length of 31.20 ± 2.00 mm with a threaded bushing diameter of Ø19.50 ± 0.30 mm, designed for standard panel cutouts.
- M10 x 1 Thread: Standard M10 x 1 threading allows compatibility with common panel-mount nuts and hardware.
- Panel Depth: A mounting depth of 8.50 ± 0.50 mm and overall bushing height of 10.93 ± 1.00 mm accommodate typical enclosure wall thicknesses.
Assembly Instructions
- Prepare the Panel Cutout: Drill or prepare a panel hole sized to accommodate the Ø19.50 mm threaded bushing.
- Insert the Jack: Insert the ST229L threaded bushing through the panel cutout from the front or rear, depending on enclosure design.
- Attach the Gasket: Place the included gasket over the threaded bushing against the panel surface for a snug seal and added stability.
- Secure with the Nut: Thread the included M10 x 1 nut onto the bushing and tighten securely, leveraging the precision thread finish to prevent loosening during use.
- Wire the Terminals: Solder or connect wiring to the jack’s terminal lugs according to your circuit’s signal and ground requirements.
- Verify the Connection: Test for continuity and confirm secure mechanical mounting before final enclosure assembly.
