D38999/26MJ43JA-LC vs D38999/24MC35JA-LC
| Part Number |
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| Category | Circular Connectors - Housings | Circular Connectors - Housings |
| Manufacturer | TE Connectivity Deutsch Connectors | TE Connectivity Deutsch Connectors |
| Description | CONN PLUG HSG FMALE 43POS INLINE | CONN RCPT HSG FMALE 22POS PNL MT |
| Package | - | - |
| Series | Military, MIL-DTL-38999 Series III, ACT | Military, MIL-DTL-38999 Series III, ACT |
| Type | For Female Sockets | For Female Sockets |
| Features | Coupling Nut | - |
| Mounting Type | Free Hanging (In-Line) | Panel Mount |
| Ingress Protection | Environment Resistant | Environment Resistant |
| Orientation | A | A |
| Number of Positions | 43 | 22 |
| Connector Type | Plug Housing | Receptacle Housing |
| Shielding | Shielded | Shielded |
| Contact Type | Crimp | Crimp |
| Shell Size - Insert | 25-43 | 13-35 |
| Fastening Type | Threaded | Threaded |
| Shell Size, MIL | J | C |
| Contact Size | 16 (20), 20 (23) | 22D |
| Shell Material | Composite | Composite |
| Housing Color | Silver | Silver |
| Shell Finish | Electroless Nickel | Electroless Nickel |
| Mounting Feature | - | Bulkhead - Front Side Nut |
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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. Can the circular connector housing be customized?
Yes, many manufacturers offer customized shell services, including customized materials, colors, sizes, and specific environmental adaptability requirements to meet specific application needs.
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4. What are the advantages of plastic shells compared to metal shells?
The plastic casing is lightweight, cost-effective, corrosion-resistant, and suitable for low-power applications and indoor environments. The metal casing provides better strength, impact resistance, and shielding performance.

