How to purchase M8 connectors in bulk?

1, Technical parameters: Accurately match application scenario requirements
Electrical performance
The rated current of M8 connector covers 0.5A to 4A, and the appropriate specifications need to be selected according to the load type. For example, the joint sensor of industrial robots needs to support a current of 3A or above, while the electrocardiogram signal transmission of medical equipment only requires 0.5A. In terms of voltage, 24V to 30V (AC/DC) is the conventional range. If used for industrial Ethernet power supply (PoE), an enhanced model that supports 250V needs to be selected.
Protection level and materials
IP67/IP68/IP69K: Outdoor light boxes and food processing equipment require an IP68 rating or higher, while indoor dry environments can meet IP67.
Shell material: Nickel plated brass is suitable for general industrial scenarios, stainless steel cover design (such as the 2023 improved model of Moore Electronics) can enhance the anti pollution ability of the food processing industry, and PUR molded shell enhances wear resistance, suitable for high-frequency plugging and unplugging scenarios.
Pin configuration and coding
3/4/5/8 poles optional: 3 pins are used for simple signal transmission, 5 pins support power+signal mixed transmission, and 8 pins are suitable for complex control protocols.
Anti misplacement coding: By using female head notches and male head protrusions (such as A/B/D coding) to avoid mismatches and reduce equipment failure rates.
physical structure
Straight head/bend: In space constrained scenarios such as robot joints, 90 ° bends are preferred, while straight heads are suitable for sensor arrays with regular wiring.
Shielding layer design: In electromagnetic interference (EMI) sensitive environments (such as medical MRI equipment), a shielding model with 30dB attenuation should be selected to ensure signal integrity.
2, Supplier screening: Building a multi-level supply chain system
Core manufacturers and market structure
The global M8 connector market is dominated by international giants such as Omron, TE Connectivity, Murrelektronik, and Belden, with a combined market share of over 60% by 2024. Among domestic manufacturers, companies such as Desao Precision, Shengna Electronics, and Keyingfa Electric have formed industrial clusters in East and South China by leveraging their cost-effectiveness advantages, and can provide 72 hour fast delivery services.
Customized Capability Assessment
Cable customization: Longzhiyi cables support customization of special materials such as TPU and TPE to meet the biocompatibility requirements of medical equipment.
Structural variants: The T-head, adapter, and other variant designs launched by Husman in 2025 support device cascading and complex wiring requirements. Before procurement, it is necessary to confirm whether the supplier has such development capabilities.
Capacity and delivery guarantee
Inventory level: The official website of DeSuo Precision shows that its M8 connector inventory exceeds 100000 pieces, which can cover the immediate demand for conventional models.
Flexible production: Shengnar Electronics achieves small batch and multi variety customization through digital production lines, with MOQ (minimum order quantity) as low as 100 pieces, suitable for trial production in the research and development stage.
3, Industry Certification: Avoiding Compliance Risks
international standard
IEC 61076-2-104: Define the mechanical, electrical, and environmental performance of M8 connectors, and verify product testing reports during procurement.
ISO 9001/14001: Ensure that supplier quality management systems and environmental management systems comply with international standards.
Industry specific certification
Medical field: ISO 13485 medical device quality management system certification is required, such as the fully shielded model of Pentax connectors that have been registered with the FDA.
Automotive Electronics: AEC-Q200 certification is the entry threshold for automotive grade connectors, and TE Connectivity's M8 Hybrid solution supports 400W power transmission, suitable for powering in vehicle sensors.
environmental requirements
RoHS/REACH: The EU market requires connectors to be lead-free and halogen-free, and domestic manufacturers such as Electric Bee have passed SGS environmental testing.
UL certification: Products exported to the North American market must pass the UL 94V-0 flame retardant rating test to reduce the risk of fire.