Optical module casing made of zinc alloy

Zinc alloy is widely used for optical module casings due to its high precision, structural strength, thermal conductivity, and excellent electromagnetic shielding.

Material Properties and Advantages

Zinc alloy offers high fluidity, making it ideal for hot-chamber die-casting, which allows manufacturers to produce complex shapes with thin walls and high dimensional accuracy. Its lower melting point compared to aluminum enables faster production cycles, stronger parts, and cost-effective near-net-shape casting. Zinc alloy casings provide mechanical strength, corrosion resistance, and oxidation resistance, ensuring optical modules operate reliably in harsh environments.

Additionally, zinc alloy exhibits superior thermal conductivity and EMI shielding, protecting sensitive optical and electrical components from heat and electromagnetic interference.

Manufacturing Process

Optical module housings are typically produced using precision zinc alloy die-casting, which ensures high dimensional stability and structural integrity. The process involves pouring molten zinc alloy into molds under high pressure, allowing for complex geometries and precise tolerances. Components such as pull tabs may be made from stainless steel or TPV injection, while the main housing is zinc alloy die-cast.

This method supports MSA-compliant designs for SFP, SFP+, QSFP, QSFP-DD, OSFP, and other optical transceivers, ensuring interoperability across different vendors and standards.

Applications

Zinc alloy optical module casings are widely used in fiber optic communications, data centers, network switches, and 5G infrastructure. They are suitable for high-speed modules such as 400G, 800G, and QSFP112, providing reliable EMI shielding, heat dissipation, and mechanical protection.

OEM and OD

M manufacturers often offer customized zinc alloy housings to meet specific design requirements, including color-coded handles and precision machining for enhanced performance.

Performance and Reliability

Zinc alloy housings undergo rigorous testing for thermal resistance, environmental resilience, and electromagnetic interference shielding. They comply with ISO 9001, ISO 14001, and Telcordia GR-468 standards, ensuring consistent quality, long service life, and minimal environmental impact. The combination of precision die-casting and high-quality zinc alloys allows optical modules to maintain signal integrity and operational stability even under extreme conditions.

In summary, zinc alloy casings are the preferred choice for optical modules due to their combination of mechanical strength, thermal management, EMI shielding, and precision manufacturability, making them essential for modern high-speed optical communication systems.