D38999/24MD18JC
MIL-DTL-38999 III (D38999) harsh environment connectors consist of wall mount receptacles, jam nut receptacles, and straight self-locking RFI plugs. They are offered in 9 shell sizes and 54 insert arrangements, utilizing M39029 contacts in sizes 22D, 20, 16, 12, 10 power, and 8 twinax. 38999 Series 3 connectors are offered in a variety of shell materials, including aluminum, stainless steel, and lightweight composite. They are also available in a wide assortment of plating options, including olive drab cadmium, nickel, black zinc nickel, and passivated stainless steel. Selection includes RoHS-compliant, cadmium-free finishes, as well as Boeing BACC-approved designs.
Part Aliases: TE Connectivity | Deutsch YACT24MD18JCV00100
The D38999/24MD18JC is a MIL-DTL-38999 III (D38999) jam nut receptacle, part of the DEUTSCH 38999 Series III Composite Connectors. With 18 gold-plated socket contacts (size 20), it offers high conductivity and a voltage rating of 600V AC, 850V DC, and 1800Vrms. Designed for harsh environments, it operates in temperatures ranging from -65°C to 200°C (-85°F to 392°F). Featuring a triple start threaded mating type and a durable composite shell with electroless nickel plating, this connector ensures reliability in military (service class M) and high-reliability applications. Its 1500-cycle contact mating life and environment-resistant ingress protection make it ideal for demanding aerospace, defense, and industrial systems. The YACT24MD18JCV00100 is a designated part alias for easy identification.
Details
| Product Category: | |
| Manufacturer: | TE Connectivity | Deutsch |
| Manufacturer Part Number: | TE Connectivity | Deutsch D38999/24MD18JC |
| Military Specification: | MIL-DTL-38999 III |
| Series: | DEUTSCH 38999 Series III Composite Connectors |
| Amperage: | 7.5 A |
| Connector Type: | Circular, Receptacle |
| Number of Contacts: | 18 |
| Mount Type: | Jam Nut |
| Contact Plating: | Gold |
| Maximum Operating Temperature: | 200 °C |
| Minimum Operating Temperature: | -65 °C |
| Voltage: | 1800 Vrms, 600 V AC, 850 V DC |
| Shell Size: | 15 |
| Contact Size: | 20(18) |
| Contact Type: | Socket |
| Mating Type: | Triple Start Threaded |
| Shell Plating: | Electroless Nickel |
| Finish/Coating: | Electrodeposited Nickel, Electroless Nickel |
| Number of Positions: | 18 |
| Keyway Polarization: | C |
| Service Rating: | I |
| Shell Style: | Jam Nut Mounting Receptacle |
| Shell Size - Insert Arrangement: | D18 |
| Service Class: | M |
| Shell Material: | Composite |
| Operating Temperature Range: | -65 - 200 °C, -85 - 392 °F |
| Contact Gender: | Female |
| Contact Mating Life: | 1500 Cycles |
| Conductivity: | Conductive |
| Ingress Protection: | Environment Resistant |
| Contact Style: | Socket - 1500-Cycle Contact |
| Shell Type: | Jam Nut Receptacle |
| Product: | Standard Circular Connectors |
| Product Type: | Connector |
| Part Aliases: | YACT24MD18JCV00100 |
| Service Class Detail: | Nickel Plated Composite Shell |
| SKU: | DCHD38999/24MD18JC |
| Environmental Protection: | Yes |
| Weight: | .0481 lb / 21.8 g |
| Feedthrough Type: | No |
| Fluid Type: | SEA-AMS1424 Type I / Coolanol 25 / MIL-PRF-5606 / MIL-DTL-5624 (JP-4,JP-5) / MIL-PRF-7808 / MIL-PRF-23699 / MIL-DTL-83133 (JP-8) / M2-V |
| Peripheral Seal Material: | Silicone |
| O-Ring Material: | Silicone |
| Environmental Protection Type: | Elastomer Sealed |
| Insulation Material: | Hard Dielectric/Silicone |
| Hermetically Sealed: | No |
| Entry Style: | Rear Insertion |
| Number of Signal Positions: | 18 |
| Keying and Polarized Position Locations: | C |
| Number of Power Positions: | 0 |
| Preloaded: | No |
| Factory Installed Backshell: | No |
| Keying: | Keyway Polarization C |
| Contact Layout Arrangement: | D18 |
| Contact Quantity (Size 20): | 18 |
| Reverse Gender: | No |
| Assembly Length: | 33 mm / 1.3 in |
| Accepts Wire Insulation Diameter Range: | 1.02 - 2.11 mm / .04 - .083 in |
| Wire Size: | .2 - .52 mm² / 24 - 20 AWG |
| Panel Thickness: | 1.58 - 3.2 mm / .062 - .126 in |
| Alignment Keyed: | Clocking |
| Flange: | Jam Nut Flange |
| Connector Mounting Type: | Panel Mount |
| Mating Retention: | With |
| Polarization Code: | C |
| Mating Alignment Type: | Keyed |
| Panel Mount Feature: | With |
| Circuit Application: | Signal |
| Durability Rating: | 1500 Cycles |
| Position Locations Omitted: | All |
| Shielded: | Yes |
| Connector System: | Cable-to-Panel |
| Connector and Contact Terminates To: | Wire & Cable |
| Assembly Type: | Electrical Connector |
| Sealable: | Yes |
| Connector Style: | Receptacle |
| Fluid Resistance: | Yes |
| Part Alias: | YACT24MD18JCV00100 |
Compliance
Environmental Initiative Details
| Environmental Initiative: | RoHS |
|---|---|
| Compliant: | Unknown |
| Date of this Information: | Unknown |
| Notes: |