D38999/26MJ43JA-LC vs D38999/20WH55BE
| 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 55POS PNL MT |
| Package | - | - |
| Series | Military, MIL-DTL-38999 Series III, ACT | Military, MIL-DTL-38999 Series III, DTS |
| 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 | E |
| Number of Positions | 43 | 55 |
| Connector Type | Plug Housing | Receptacle Housing |
| Shielding | Shielded | Shielded |
| Contact Type | Crimp | Crimp |
| Shell Size - Insert | 25-43 | 23-55 |
| Fastening Type | Threaded | Threaded |
| Shell Size, MIL | J | H |
| Contact Size | 16 (20), 20 (23) | 20 |
| Shell Material | Composite | Aluminum Alloy |
| Housing Color | Silver | Olive Drab |
| Shell Finish | Electroless Nickel | Chromate over Cadmium |
| Mounting Feature | - | Flange |
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1. What are the common materials for circular connector housings?
Common shell materials include metal (such as aluminum, stainless steel) and plastic. Metal casings typically have better shielding and corrosion resistance, while plastic casings are lightweight and suitable for applications that do not require shielding.
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2. 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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3. How to maintain the circular connector housing?
Regularly inspect the surface of the casing for wear or corrosion, ensuring that the seals are intact and kept clean. If necessary, aging or damaged casings and seals should be replaced in a timely manner.
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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.
