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Engineered for High-Frequency Precision & Miniaturization
This specialized RG174 coaxial cable assembly is the perfect solution for connecting high-frequency test equipment to densely packed circuit boards. It features a rugged SMA Male connector on one end for superior RF performance up to 18 GHz, and a compact 10-32 UNF (M5) Microdot Male Plug on the other for space-constrained applications. Ideal for R&D labs, 5G modules, and aerospace electronics, this jumper ensures a reliable 50 Ohm impedance path with minimal signal degradation.
Feature | Specification |
Product Type | SMA Male to 10-32 UNF Microdot Male |
Cable Model | RG174 / RG174/U |
Impedance | 50 Ohm |
Center Conductor | 20 AWG Solid Copper |
Dielectric | Polyethylene (PE) |
Shielding | 95% Tinned Copper Braid |
Jacket | PVC (Standard), FEP/Silicone options available |
Operating Voltage | 750 Vrms |
Frequency Range | DC to 18 GHz (SMA Limit) |
VSWR | ≤ 1.20:1 (Typical) |
Temperature Range | -55°C to +105°C (PVC), -55°C to +200°C (FEP) |
RoHS Status | Compliant |
1. SMA Connector: The Gold Standard for Microwave Frequencies
Unlike the BNC connector, the SMA (SubMiniature version A) connector is a semi-precision connector widely used in microwave applications.
Extended Bandwidth: Supports frequencies up to 18 GHz, making it ideal for 5G, Wi-Fi 6E, and satellite communication testing.
Threaded Coupling: The threaded interface ensures a gas-tight connection, preventing loosening due to vibration or thermal cycling.
2. 10-32 UNF (M5) Microdot Interface
The 10-32 UNF thread (commonly known as M5) is the industry standard for miniature RF connections.
Secure Locking: Prevents accidental disconnection in high-vibration environments (e.g., industrial machinery).
Low Profile: The Microdot head is only a few millimeters high, allowing direct mounting on crowded PCBs without obstructing nearby components.
3. RG174: The Optimal Balance
While thinner cables exist, RG174 offers the best compromise between size and performance.
Low Loss: Compared to thinner micro-coaxial cables (like RG316), RG174 offers lower attenuation per meter.
Durability: The 2.49mm outer diameter provides enough mechanical strength for repeated mating cycles without breaking.
5G & Wireless Modules: Connecting compact 5G antennas or IoT modules to test fixtures.
Aerospace & Defense: Wiring in UAV avionics, radar altimeters, and cockpit instrumentation where weight and space are critical.
High-Speed Data Acquisition: PCB testing and probing in R&D labs, especially for high-frequency digital signals.
Medical Electronics: Connecting disposable patient sensors and internal probes to monitoring equipment.
Precision Termination Process:
Laser Trimming: Ensures precise stripping of the jacket and dielectric without nicking the center conductor.
Solder & Crimp: The SMA uses a precision die-cast body with a gas-tight solder connection. The Microdot utilizes a solder-cup termination for low resistance.
100% Testing: Every single cable is tested on a Vector Network Analyzer (VNA) to verify Return Loss and Insertion Loss metrics up to 18 GHz.
Traceability:
Each batch is serialized, and test data is archived to meet ISO 9001 standards, providing full traceability for your quality assurance needs.
Standard Packaging: Individually poly-bagged to prevent connector damage.
Labeling: Clear labels indicate cable type, length, and batch code.
Carton: Packed in sturdy export cartons suitable for international shipping (ISTA 3A certified).
Lead Time: Standard lead time is 7-10 working days after order confirmation.
Q1: What is the difference between 10-32 UNF and M5?
A: They are the same thing. 10-32 UNF refers to the thread specification (10 threads per inch, Unified National Fine), while M5 refers to the metric diameter (5mm). In the RF connector industry, "Microdot" usually implies the 10-32 UNF thread.
Q2: Can I get this cable with a straight Microdot instead of an angled one?
A: Yes. While the 90-degree (right-angle) Microdot is standard for PCB mounting, we offer Straight (0-degree) Microdot configurations for specific housing designs. Please specify your requirement during the inquiry.
Q3: Is RG174 suitable for outdoor use?
A: The standard PVC jacket is for indoor use. For outdoor or high-temperature environments (e.g., engine bays), we recommend the FEP (Teflon) jacketed version, which is UV resistant and rated up to 200°C.
Q4: What is the minimum order quantity (MOQ)?
A: As an OEM manufacturer, our standard MOQ is 100 pieces. However, we offer sample pricing for prototyping and testing purposes.
This SMA to Microdot pigtail is not just a wire; it is an engineered signal path. By combining the high-frequency capability of SMA with the space-saving design of Microdot technology, we deliver a product that ensures your critical RF signals arrive intact, even in the most demanding environments.
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