I. Overview
The SMA905 is a fiber connector featuring a threaded locking mechanism. Its standard interface is designed for multi-mode fiber, with mating end faces incorporating a micro-air gap (non-contact design). This connector is commonly used in high-power laser transmission applications to minimize end-face damage.
II. Comparison of Four Structural Types
| Type | Core Structure | Working Principle | Advantages | Disadvantages |
| Standard SMA905 Stainless Steel Ferrule Connectors | Stainless steel ferrule + epoxy resin fixation | Fixes fiber with resin to ensure concentricity | Low cost, simple manufacturing | Poor temperature resistance, not resistant to aging |
| High-Temperature, Vacuum-Compatible SMA905 Stainless Steel Ferrule Connectors | Metal ferrule + air gap + distal glue fixation | Uses air gap for thermal isolation, preventing heat conduction | Good heat dissipation, suitable for medium-high power | Complex process |
| Mechanical Clamp Type | Metal Assembly + Ceramic Sleeve | Mechanical clamping without glue,high-temperature resistant | High temperature resistance, vibration resistance, and high stability | Complex structure, high price
|
| Ceramic Ferrule Type | Metal Housing + Integrated Ceramic Ferrule | Ceramic support ensures stable optical performance | Low insertion loss, superior signal quality | Highly brittle, not impact-resistant |
III. Selection Recommendations
- AdhesiveType: Suitable for low-power, low-cost applications such as laboratory testing and general communications.
- AirGap Type: Suitable for medium-to-high-power industrial laser equipment requiring effective heat dissipation.
- Mechanical Clamp Type:Suitable for high-temperature, high-vibration environments such as aerospace and military equipment.
- Ceramic Ferrule Type: Suitable for high-precision optical systems and communications equipment with stringent signal loss requirements.
IV. Summary
The SMA905 connector offers diverse configurations to meet varying application requirements. When selecting a model, comprehensive consideration of power, temperature, stability, and cost factors is essential to achieve optimal performance matching.
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