4B Series Socket MGG.4B.340.CLL
MGG.4B.340.CLL 40-pin connector features a classic push-pull self-locking design with 40 high-density signal contacts. It has a rated current of 2–3A per contact, supports wide temperature operation, and provides excellent EMC shielding performance. With standard keying for anti-mismating, it supports solder cup, PCB, and other termination methods. MGG.4B.340.CLL offers long mechanical life, strong environmental resistance, and high vibration resistance, making it widely used in multi-channel signal connections for medical, industrial, and test equipment.

Product Description
Moderate size & high density
This connector series offers a well-balanced size with excellent space efficiency. It provides more contact pins than smaller connectors while occupying less space than larger models. With up to 40 contacts, it supports multi-channel signal transmission in a compact body, making it ideal for devices that require high signal density without excessive volume.
Push-pull self-locking for fast operation
It adopts a reliable push-pull self-locking mechanism that enables quick mating and unmating. The connector locks automatically when plugged in and releases smoothly when pulled, ensuring efficient operation even in limited operating space. This stable locking structure prevents accidental disconnection caused by vibration or movement, ensuring continuous and safe connection.
High stability & reliability
The connector features excellent shielding performance, strong anti-vibration capability, and wide temperature resistance. It maintains stable electrical performance under harsh environmental conditions, including extreme temperatures, mechanical vibration, and electromagnetic interference. It is highly suitable for precision equipment in medical, industrial, and testing applications.
Strong versatility & compatibility
Designed with standard interface dimensions and anti-mismating keying, it ensures accurate and safe connection. It supports multiple termination methods such as solder cup and PCB mounting, providing flexible wiring solutions. Its standardized structure allows easy replacement and upgrade, widely adapting to various multi-channel connection requirements.
Specifications
| Operating Temperature | -55°C~125°C |
| Humidity(max) | <=95%[at 60°C/140°F] |
| Salt Spray Corrosion | 1000hr |
| Vibration | 15g[10Hz~2000Hz] |
| Mating Cycles | 10000+ times |
| Contact Material | Gold Plated Tin Bronze |
| Housing Material | Chrome-plated Brass |
| Insulator Material | PPS |
| Hexagon Nut Material | Nickel-plated Brass |
| Contact Diameter | 0.7mm |
| Length of Welding Cups | 4mm |
| Rated Current | 2A |
| Rated Voltage | 900V AC |
| Insulator Resistance | 5000 mΩ[at 5000V AC] |
| Contact Resistance | <=12.5 mΩ |
| IP Rate | The enclosure provides waterproof protection up to IP68, and achieves IP67 when mated with the QM TE series plug. |
Key Parameters
- Operating Temperature: -55°C~125°C
- Humidity(max): <=95%[at 60°C/140°F]
- Salt Spray Corrosion: 1000hr
- Vibration: 15g[10Hz~2000Hz]
- Mating Cycles: 10000+ times
- Contact Material: Gold Plated Tin Bronze
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