MS3474L20-39AW vs MS3474L20-39A
| Part Number |
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| Category | Circular Connectors - Housings | Circular Connectors - Housings |
| Manufacturer | TE Connectivity Deutsch Connectors | TE Connectivity Deutsch Connectors |
| Description | CONN RCPT HSNG MALE 39POS PNL MT | CONN RCPT HSNG MALE 39POS PNL MT |
| Package | - | - |
| Series | Military, MIL-DTL-26482 G Series II, AFD | Military, MIL-DTL-26482 G Series II, AFD |
| Type | For Male Pins | For Male Pins |
| Mounting Type | Panel Mount | Panel Mount |
| Ingress Protection | Environment Resistant | Environment Resistant |
| Orientation | W | N (Normal) |
| Number of Positions | 39 | 39 |
| Mounting Feature | Bulkhead - Front Side Nut | Bulkhead - Front Side Nut |
| Connector Type | Receptacle Housing | Receptacle Housing |
| Shielding | Unshielded | Unshielded |
| Contact Type | Crimp | Crimp |
| Shell Size - Insert | 20-39 | 20-39 |
| Fastening Type | Bayonet Lock | Bayonet Lock |
| Contact Size | 16 (2), 20 (37) | 16 (2), 20 (37) |
| Shell Material | Aluminum Alloy | Aluminum Alloy |
| Housing Color | Silver | Silver |
| Shell Finish | Electroless Nickel | Electroless Nickel |
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1. What is the main function of the circular connector housing?
The shell mainly plays a protective and fixing role, protecting the connector from external environmental influences such as moisture, dust, and impact, and ensuring a secure connection of the cable to prevent cable loosening.
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2. What is the protection level of the circular connector housing?
The protection level is usually represented by an IP code, such as IP67. This level indicates the protective ability of the shell against solids (such as dust) and liquids (such as water). High IP rating is suitable for outdoor and harsh environments.
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3. What are the advantages of circular connector housings in outdoor applications?
The shell provides protection level, weather resistance, and corrosion resistance, ensuring that the connector operates stably for a long time in humid, extreme temperature, and outdoor environments.
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4. How does the circular connector housing ensure the mechanical stress release of the cable?
The casing is usually equipped with cable clamps or stress relief devices, which firmly fix the cable to prevent mechanical stress caused by pulling or bending from being transmitted to the electrical connection part of the connector, thereby extending the life of the connector.

