Times Microwave Systems
Times Microwave SZ-240-SM SMA Male Connector
Times Microwave SZ-240-SM SMA Male Connector
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Times Microwave SZ-240-SM SMA Male Non-Solder Crimp Connector (LMR-240)
The Times Microwave Systems SZ-240-SM (Stock Code: 3190-2675) is a compact, high-performance 50-Ω SMA straight male (plug) RF coaxial connector designed for 0.240'' low-loss flexible coaxial cables, including LMR-240, LMR-240-UF, and TCOM-240. Belonging to Times Microwave's Spring-Finger (SZ/EZ) product line, this connector utilizes a solderless captive spring-finger center pin along with a crimp outer ferrule. This design eliminates assembly errors, cold solder joints, thermal damage to the foam dielectric, and Foreign Object Debris (FOD).
Engineered with an Alballoy-plated brass body (Copper-Tin-Zinc alloy) for superior environmental protection, a gold-plated beryllium copper pin, and PTFE (Teflon) insulation, the SZ-240-SM supports broad spectrum operations up to 6 GHz with low VSWR. The threaded SMA coupling nut ensures high mechanical reliability under heavy vibration, thermal movement, and physical shock—making it an ideal choice for GPS receivers, cellular routers, Wi-Fi gear, and marine RF communications.
Key Features
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Solderless Center Pin Assembly: Captive beryllium copper spring-finger pin eliminates soldering, reducing install time while ensuring consistent contact pressure under thermal strain.
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High-Vibration Threaded Coupling: Threaded 1/4''-36 UNS coupling nut provides secure physical retention and stable performance in high-vibration marine and mobile environments.
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Alballoy Tri-Metal Body Plating: Non-magnetic, highly corrosion-resistant surface finish superior to standard nickel plating in harsh salt-spray environments.
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Compact Form Factor: Miniature SMA profile enables high-density RF connectivity in constrained equipment enclosures, telemetry units, and radio racks.
Specifications
| Feature | Specification |
| Manufacturer / Brand | Times Microwave Systems (Amphenol) |
| Stock Code / Item SKU | 3190-2675 |
| Part / Model Number | SZ-240-SM |
| Connector Interface | SMA Male Plug (Straight Geometry) |
| Impedance | 50 Ω |
| Operating Frequency Range | DC to 6 GHz |
| VSWR Performance | ≤ 1.30:1 up to 6 GHz |
| Cable Compatibility Group | LMR-240, LMR-240-UF, TCOM-240 (0.240'' Coax) |
| Center Contact Attachment | Spring-Finger (Captive / Non-Solder Pin) |
| Outer Contact Attachment | Hex Crimp Ferrule (0.255'' / 6.48 mm Die) |
| Coupling Nut Configuration | Hex Nut (5/16'' Hex Flat compatible) |
| Body Material / Finish | Brass / Alballoy (Copper-Tin-Zinc Tri-Metal Plated) |
| Center Contact Material / Finish | Beryllium Copper / Gold Plated |
| Dielectric Material | PTFE (Teflon) |
| Dimensions (L * W) | Approx. 29.8 mm * 9.5 mm (1.17'' * 0.37'') |
| Operating Temperature Range | -55°C to +155°C |
| Compliance / Environmental | RoHS Compliant |
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