
( Brand: Rf Solutions ), ( Manufacturer Part Number: 357-CBA-UFLSMA20IP ), ( Type: Cable ), ( Connector B: Sma Female ), ( Connector A: U.fl / Ipex ), ( Cable Length: 20 Cm ), ( Features: Gold Plated )
The **RF-357-CBA-UFLSMA20IP (25x U.FL to SMA Bulkhead Cable, 20cm)** is a high-performance, precision-engineered RF coaxial cable assembly designed for demanding applications in wireless communication, test and measurement, and RF system integration. This bulkhead-mounted cable features a robust **U.FL (Micro-U.FL) male connector on one end**, optimized for compact device interfaces such as smartphones, tablets, and modular RF modules, while the opposing end is equipped with a **reverse-polished SMA female bulkhead connector**, ensuring secure and reliable mounting in enclosures or test fixtures. The **20cm (7.87-inch) length** provides a balanced compromise between flexibility and rigidity, ideal for applications where space constraints require a short yet sturdy connection without excessive signal degradation.
Constructed with **high-quality, low-loss materials**, this cable delivers exceptional performance across a broad frequency spectrum, typically supporting operation from **DC up to 6 GHz** (and beyond, depending on specific use cases), making it suitable for a wide range of RF applications, including 5G testing, Wi-Fi 6/6E, Bluetooth, and other high-speed wireless protocols. The **U.FL connector** ensures a secure, low-reflection interface with devices featuring micro-U.FL ports, minimizing signal loss and maximizing data integrity, while the **SMA bulkhead connector** is designed for easy installation in metal or plastic enclosures, providing a weatherproof and vibration-resistant seal when properly mounted. The reverse-polished design of the SMA connector further enhances durability by reducing the risk of damage during insertion and removal.
Built to withstand harsh environmental conditions, this cable is constructed with **flexible yet durable shielding**, which effectively suppresses electromagnetic interference (EMI) and maintains signal integrity in noisy environments. The **bulkhead mounting capability** ensures a stable connection, reducing the likelihood of accidental disconnections or misalignments, which is critical in field deployments, laboratory settings, or industrial applications. Additionally, the **25-piece bulk quantity** makes this cable an economical choice for bulk purchases, ideal for OEMs, test equipment manufacturers, or RF system integrators requiring a reliable, high-volume solution. Whether used in prototyping, mass production, or field testing, this cable offers a seamless blend of performance, durability, and ease of integration, making it a versatile component for modern RF and wireless applications.
### **Pros and Cons of buying a RF357-CBA-UFLSMA20IP (25x U.FL to SMA Bulkhead Cable, 20cm)**
#### **Pros:**1. **High-Quality Connectors** The cable uses **U.FL to SMA** connectors, which are reliable for RF applications. U.FL connectors are compact, durable, and commonly used in high-frequency circuits, while SMA connectors provide a robust, low-loss connection.
2. **Bulkhead Mounting** The SMA end is designed for **bulkhead mounting**, making it suitable for installations where the cable needs to pass through a panel or enclosure. This is useful in professional setups like test equipment, antennas, or RF modules.
3. **Short Length (20cm)** The **20cm length** reduces signal loss and makes it ideal for applications where cable length must be minimized, such as in compact RF systems or when working with high-frequency signals.
4. **Bulk Packaging (25x)** Buying in bulk (25 cables) offers **cost savings per unit**, making it a practical choice for inventory stocking or large-scale projects. This is particularly useful for manufacturers, hobbyists, or professionals who frequently work with RF cables.
5. **Compatibility with U.FL Devices** Many modern RF modules, antennas, and development boards (e.g., ESP32, LoRa modules, Wi-Fi/BLE devices) use **U.FL connectors**, making this cable a versatile choice for connecting to such devices.
6. **Low Loss at High Frequencies** The cable is likely designed for **low insertion loss**, which is critical in RF applications where signal integrity must be maintained.
7. **Easy to Install** The bulkhead SMA connector simplifies mounting in enclosures, reducing the need for additional adapters or custom solutions.
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#### **Cons:**1. **Potential Signal Loss Over Longer Frequencies** While 20cm is short, if used at **very high frequencies (e.g., above 10 GHz)**, even a short cable can introduce noticeable signal degradation. The loss depends on the cable s **characteristic impedance and dielectric material**, which may not be specified in the product name.
2. **No Specified Frequency Range** The product name does not explicitly state the **operating frequency range**. Without this information, buyers must assume it is suitable for **common RF applications (e.g., 2.4GHz, 5GHz Wi-Fi, LoRa, Bluetooth)**, but it may not be optimized for **microwave or millimeter-wave frequencies**.
3. **Bulkhead SMA May Require Pre-Drilling** If mounting in a metal enclosure, the user must ensure the **bulkhead hole is properly sized** to avoid damage to the connector. Incorrect installation could lead to **signal leakage or connector failure**.
4. **No Shielding or Twisting Information** For high-frequency applications, **shielding and cable twisting** are crucial to minimize interference. The product name does not specify whether the cable has **proper shielding or braiding**, which could affect performance in noisy environments.
5. **Potential for Counterfeit or Low-Quality Units** When buying in bulk, especially from unverified sellers, there is a risk of receiving **counterfeit or substandard cables** that do not meet performance expectations. Always verify the seller s reputation.
6. **Limited Flexibility in Length** Since the cable is **fixed at 20cm**, users cannot adjust length for specific applications. If a different length is needed, additional cables or adapters may be required.
7. **No Built-in Grounding or Strain Relief** Without proper strain relief, repeated bending or pulling could **damage the connectors over time**, leading to intermittent connections.
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### **Conclusion**
The **RF357-CBA-UFLSMA20IP (25x U.FL to SMA Bulkhead Cable, 20cm)** is a **practical and cost-effective solution** for applications requiring a **short, bulkhead-mounted RF cable** with U.FL connectivity. It is well-suited for **Wi-Fi, Bluetooth, LoRa, and other low-to-mid-frequency RF applications** where compactness and bulk mounting are priorities.
However, **buyers should be cautious** about:- **Frequency limitations** (ensure it meets the required bandwidth).
- **Quality control** (verify the seller s reputation to avoid counterfeits).
- **Installation requirements** (proper bulkhead mounting and strain relief are necessary).
- **Signal integrity** (if used at very high frequencies, additional testing may be needed).
If these considerations are addressed, the cable is a **solid choice for inventory, prototyping, or professional RF setups**.
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### **Recommendation**
- **Buy from a reputable seller** (e.g., authorized distributors like Mouser, Digi-Key, or trusted RF component suppliers) to ensure **authenticity and quality**.
- **Verify frequency compatibility** If working at **high frequencies (e.g., 6GHz and above)**, confirm with the manufacturer or test the cable s performance.
- **Check for shielding and loss specifications** If possible, request data sheets to ensure the cable meets your **insertion loss and return loss requirements**.
- **Consider alternatives** If bulkhead mounting is not strictly necessary, a **standard SMA-to-SMA cable** or a **U.FL-to-U.FL cable** might be more flexible.
- **Use for intended applications** Best suited for **low-to-mid-frequency RF connections** (e.g., 2.4GHz, 5GHz) where **short length and bulkhead mounting** are advantages.
For most **Wi-Fi, LoRa, or Bluetooth projects**, this cable is a **good bulk purchase**, but for **high-end or critical RF applications**, additional validation may be required.
Gold-plated SMA bulkhead with nut and washer installed. Us.FL IPEX plug to SMA female bulkhead connector. New surplus from Digit-Key packaging. New lot of 25 RF coaxial cable assemblies.
Cables are approximately 7.8 inches 20 cm in length .