SMB Cable Assemblies – Types, Specifications & Applications Guide

Introduction

SMB Cable Assemblies are small-footprint RF Connectivity solutions for applications that require dependable signal transmission in tight spaces. SMB (SubMiniature Version B) connectors include a snap-on coupling mechanism, making them excellent for fast installation and high-density RF systems.

These Cable Assemblies are widely utilized in telecommunications systems, GPS modules, automobile electronics, wireless devices, and industrial radio frequency equipment. 

What is an SMB Cable Assembly ?

An SMB cable assembly is comprised of:

• One or two SMB connectors, male or female.

• 50-ohm coaxial wire (RG174, RG316, RG178, or micro coax)

• Custom cable lengths based on application.

SMB Connectors are smaller than SMA Connectors and include a push-on snap-lock design, allowing for speedier connections while maintaining high RF performance.

Types of SMB Cable Assembly :

SMB cable assemblies are available in a variety of configurations based on the connector gender, orientation, and cable type.

1. SMB Male to Male

• Suitable for direct RF device connectivity.

• Common in communication modules.

2. SMB Male to SMB Female

• Used for interface customization.

• Panel to device connections

3. Straight SMB Cable Assembly

• Standard cable routing.

• Used in open layouts.

4. Right-angled SMB Cable Assembly

• Designed for compact or tight locations.

• Reduces cable bending stress.

5. SMB to SMA Cable Assembly

• Interface for SMB and SMA systems.

• Commonly used in RF testing and telecom systems.

6. SMB to MMCX, BNC, and TNC Assemblies

• Custom RF interface solutions

• Used in mixed-connector systems.

Key Features of SMB Cable Assembly

• 50 Ohm impedance.

• Snap-on connection mechanism.

• Compact connector size.

• Reliable electrical performance.

• Good shielding effectiveness.

• Quick installation and removal.

• Available in flexible and semi-rigid cable varieties.

• Ideal for high-density RF settings.

Technical Specifications

Parameter	Specification
Impedance	50 Ohm
Frequency Range	DC to 4 GHz (Typical)
Connector Type	SMB Male / Female
Cable Types	RG174, RG316, RG178, Micro Coax
VSWR	≤ 1.30 (Typical)
Contact Material	Gold-Plated Brass / Phosphor Bronze
Operating Temperature	-40°C to +85°C (Typical)

Applications for SMB Cable Assemblies :

1. Telecommunications

• Base Stations

• RF distribution systems

• Wireless communication modules

2. Automotive Electronics

• GPS modules

• Telematics systems

• Infotainment RF links

3. Industrial Equipment

• Monitoring systems

• Control cabinets

• RF Signal Routing

4. Test and Measurement

• RF Testing Setups

• Laboratory instruments

• Signal analyzers

5. Consumer Electronics

• Embedded wireless devices

• IoT modules

• Compact RF systems

Advantages of SMB Cable Assembly

• Faster connection than threaded connectors.

• Space-saving design.

• Reliable snap-lock coupling.

• Ideal for small RF modules.

• Cost-effective for medium-frequency applications.

SMB assemblies are suited for applications that require quick-connect RF interfaces in space-constrained settings.

Conclusion

SMB Cable Assemblies provide a compact, dependable, and efficient RF interconnection solution for telecommunications, automotive systems, industrial electronics, and wireless devices. They strike a sensible compromise between performance and ease, thanks to snap-on connection, a stable 50-ohm impedance, and several cable options.

For engineers constructing tiny RF systems, SMB cable assemblies are a reliable and space-saving option.

Contact Us

Eteily Technologies India Pvt. Ltd.

📫 Address: B28 Vidhya Nagar, Near SBI Bank,
 📍  District: Bhopal, PIN: 462026, Madhya Pradesh
🌐 Website: https://eteily.com

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