D38999/26MJ43JN-LC vs DTS20W23-55BE
| 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 | 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 | N (Normal) | 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 | - |
| 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 installation methods for circular connector housings?
Common installation methods include panel installation, PCB installation, or free hanging. Choosing the appropriate installation method for the casing should consider the overall design requirements of the system.
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2. Does the circular connector housing have shielding function?
Some metal casings provide electromagnetic shielding (EMI/RFI) for high-frequency signal transmission applications to prevent electromagnetic interference.
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3. What is the temperature range of the circular connector housing?
The operating temperature range of the casing depends on the material used. Metal casings typically operate within the range of -55 ° C to+125 ° C, while plastic casings may be suitable for lower temperature ranges.
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4. 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.

