DL68G-22-19P1C011

FAQFrequently Asked Questions

• What are the key design considerations when integrating the DL68G-22-19P1C011 into a high-vibration military or aerospace application? The DL68G-22-19P1C011 features a bayonet lock fastening mechanism and shielded design that provides mechanical stability in vibration-prone environments. The aluminum shell with electroless nickel finish resists corrosion, while the gold-plated copper alloy contacts maintain signal integrity under thermal cycling from -65°C to 200°C. When designing for high-vibration applications, ensure the connector backshell is properly strain-relieved and the bayonet lock is fully engaged to prevent intermittent disconnections. The 19-position configuration supports distributed signal distribution, which can reduce crosstalk compared to single high-density lines.
• Can the DL68G-22-19P1C011 be used as a direct replacement for older MIL-DTL-83723 Series II connectors, and what compatibility issues should I consider? The DL68G-22-19P1C011 is a Series III variant of the MIL-DTL-83723 standard, which introduced improved contact design and tighter tolerances compared to Series II connectors. While the 22-19 shell size and 19-position insert are backward compatible at the mechanical level, the DL68G-22-19P1C011 features updated gold plating specifications (50µin minimum) and refined contact geometry that may result in slightly tighter mating forces. Before substituting the DL68G-22-19P1C011 for a Series II connector, verify that existing mating receptacles and backshells are certified for Series III performance. Test a sample connector on your equipment to confirm no accommodation or cable routing issues arise.
• What is the current-carrying capacity of individual contacts in the DL68G-22-19P1C011, and how should I distribute the 13A total rating across the 19 positions? The DL68G-22-19P1C011 has a total connector current rating of 13A, but individual contact current capacity depends on how current is distributed across the 19 positions and the specific pin assignments in your harness design. The crimp contacts are rated for approximately 0.5 to 1.0A per contact under standard operating conditions, though this can vary based on contact mating cycles and environmental exposure. When designing your interconnect, avoid concentrating high currents on a single contact; instead, distribute power and return paths across multiple contacts to reduce I²R losses and prevent localized heating. Use the contact material specification (copper alloy with 50µin gold plating) to estimate contact resistance; the gold layer provides oxidation protection for long-term reliability, while the copper alloy base ensures adequate thermal conductivity.
• How does the operating temperature range of -65°C to 200°C affect contact resistance and signal integrity in high-frequency or analog signal applications? The DL68G-22-19P1C011 is rated for -65°C to 200°C, and this wide thermal range introduces several challenges for signal applications. Contact resistance increases at low temperatures due to reduced carrier mobility in the gold plating and copper alloy base, while at high temperatures, thermal expansion of the contact and mating receptacle can reduce contact pressure, raising contact resistance further. For analog signals, monitor contact resistance drift over thermal cycles; use a transmission line model if your signal frequencies exceed 1 MHz to account for impedance changes caused by thermal expansion. At 200°C continuous operation, the insulation material of the insert (plastic) approaches its glass transition temperature; confirm the insert material grade (typically polyimide or similar high-temperature thermoplastic) meets your application's long-term creep and dimensional stability requirements.
• What precautions are necessary when crimping contacts for the DL68G-22-19P1C011 to ensure reliable military-grade performance? The DL68G-22-19P1C011 uses crimp termination, which requires precise tooling and technique to avoid contact resistance drift or intermittent failures. Use only crimping tools qualified for MIL-DTL-83723 connectors and calibrated to the contact terminal specifications; improper crimp force can cause either insufficient contact pressure (increasing resistance) or excessive deformation (creating stress points that fail under thermal cycling). Inspect each crimped contact under magnification for correct wire seating in the barrel, proper clinch marks, and absence of wire strand protrusion. Store unused crimp contacts in moisture-sealed bags to prevent oxidation of the copper alloy before assembly. After crimping, perform pull-force testing on a sample from each production batch to verify the mechanical joint meets MIL-DTL-83723 requirements (typically 60-80 lbf depending on wire gauge).
• Is the DL68G-22-19P1C011 suitable for sealed, potted environments, or are there reliability concerns with environmental encapsulation? The DL68G-22-19P1C011 carries an Environment Resistant ingress protection rating and features a shielded design that provides passive moisture and dust protection. However, when fully potted or encapsulated in epoxy or urethane resins, thermal expansion mismatches between the aluminum shell, plastic insert, and potting material can create mechanical stress during temperature cycling. The electroless nickel finish on the aluminum shell is chemically inert to most potting resins, but confirm compatibility with your specific epoxy or silicone formulation, particularly if the potting process involves elevated temperature cures. If potting is necessary, consider using a low-CTE (coefficient of thermal expansion) potting compound and leave a small air gap around the connector mating surface to allow for thermal relief. The crimp contacts are well-suited for potted applications since the copper alloy and gold plating resist corrosion from potting resin outgassing.
• How does the shielded design of the DL68G-22-19P1C011 integrate with grounding in EMI-critical applications, and what is the correct shield termination method? The DL68G-22-19P1C011 includes shield construction as part of the connector body, which provides Faraday cage protection for signal conductors inside the insert. To achieve effective EMI rejection, the shield must be grounded at both the source and destination connectors via a 360-degree termination to the mating receptacle's shield contact. The shell material (aluminum with electroless nickel finish) serves as the primary shield conductor; ensure continuity between the plug shell and the cable shield braid by using a properly crimped shield contact or soldering the braid to an eyelet that mates with a shield contact in the receptacle. Avoid single-point grounding of the shield, as this creates a ground loop; instead, bond the shield at both ends and keep shield return paths (ground plane traces on PCBs) continuous and low-impedance. Test shield effectiveness using a network analyzer or EMI test chamber to verify attenuation meets your frequency-dependent requirements.
• What is the expected mating cycle life of the DL68G-22-19P1C011, and how does contact wear affect long-term reliability? The MIL-DTL-83723 standard for the DL68G-22-19P1C011 specifies a minimum mating cycle life of 500 cycles for the bayonet lock mechanism and contacts, though actual life depends on mating force, contact pressure, and the hardness of the mating receptacle surface. The 50µin gold plating on copper alloy contacts provides wear protection over hundreds of cycles; however, fretting wear can occur at the contact interface under vibration or thermal cycling, gradually increasing contact resistance. In applications with frequent mating cycles (>100 per year), inspect the plug for worn or dulled contact tines every 250 cycles, and replace if contact wear becomes visible under magnification. Reduce wear by ensuring the receptacle contacts are also gold-plated and properly maintained (clean and free of corrosion). If the application requires thousands of mating cycles, consider alternative connector designs with leaf-spring contacts that distribute wear across a larger contact area.
• Does the DL68G-22-19P1C011 meet RoHS compliance requirements for European and Asian markets, and are there any restrictions on solder or potting materials? The DL68G-22-19P1C011 is RoHS Compliant, meaning it meets the Restriction of Hazardous Substances directive and contains no prohibited materials (lead, cadmium, mercury, etc.) in its construction. The electroless nickel finish on the aluminum shell and the gold plating on contacts are both RoHS-compatible processes. However, RoHS compliance covers the connector itself, not assembly materials; confirm that any solder, flux, potting resin, or adhesive used during assembly is also RoHS-compliant, particularly if the final product is destined for the EU market. Lead-free solder (tin-silver-copper) is required for wave or reflow soldering of backshell components; ensure solder temperature profiles do not exceed the plastic insert's Tg (glass transition temperature), typically 260–280°C for polyimide materials used in MIL-DTL-83723 connectors.
• Can the DL68G-22-19P1C011 be used in harsh industrial environments with frequent temperature cycling, salt spray, and chemical exposure, or should I specify a different connector? The DL68G-22-19P1C011 is rated for industrial and military applications and offers strong corrosion resistance through electroless nickel plating and gold contact finish, making it suitable for many harsh environments. However, long-term performance in salt spray or corrosive chemical atmospheres depends on maintenance and specific environmental conditions. The electroless nickel finish provides 500+ hours salt spray protection per ASTM B117 standards, adequate for most industrial settings. In coastal or chemical-plant environments, apply a protective conformal coating to the entire connector assembly (excluding the mating surface) to extend life. For extreme applications involving continuous salt spray immersion or strong acids/bases, consider upgrading to connectors with stainless steel shells or additional nickel thickness, though these alternatives increase cost and procurement lead time. The DL68G-22-19P1C011 is appropriate for outdoor, factory, or vehicle environments with periodic maintenance; verify specific chemical compatibility of the plastic insert material if exposure to solvents, oils, or extreme pH solutions is anticipated.
• How should I select between the DL68G-22-19P1C011 and circular connectors from alternative manufacturers (such as Amphenol PT or Molex industrial connectors) for a new military program? The DL68G-22-19P1C011 is a TE Connectivity Deutsch connector certified to MIL-DTL-83723 Series III, which offers proven military pedigree and compatibility with established supply chains in defense and aerospace sectors. Amphenol PT connectors (PTO series) and Molex industrial connectors (such as the Micro-Change series) are alternatives that offer different trade-offs. The Deutsch DL68G-22-19P1C011 provides superior bayonet-lock reliability and environmental resistance, making it preferred for high-vibration platforms (helicopters, vehicles); however, it is more costly and has longer lead times. Amphenol PT connectors offer lower cost and faster delivery but reduced environmental sealing and lower vibration ratings. Molex industrial connectors are optimized for commercial applications with frequent mating cycles and smaller form factors but lack MIL-DTL-83723 certification. If your program requires MIL-SPEC qualification, government-procured components, or compatibility with existing military vehicle harnesses, the DL68G-22-19P1C011 is the appropriate choice. For civilian industrial applications with less stringent environmental requirements, Amphenol or Molex alternatives may offer cost savings; however, verify procurement lead times and supply-chain resilience early in the design phase.
• What cable gauge and wire insulation types are compatible with the crimp contacts of the DL68G-22-19P1C011, and how do I avoid contact resistance issues with undersized wire? The DL68G-22-19P1C011 crimp contacts accept wire gauges typically ranging from 16 AWG to 22 AWG (1.3 mm² to 0.325 mm²) depending on the specific contact terminal specified in your connector assembly drawing. The MIL-DTL-83723 standard does not rigidly define wire gauge compatibility; instead, the crimp barrel geometry and wire insulation stripping length determine the acceptable wire sizes for a given contact. Always refer to the detailed part number specification or assembly drawing for your exact contact variant. Using undersized wire (e.g., 24 AWG in a contact rated for 16–22 AWG) results in poor crimp force distribution, inadequate stranding coverage within the crimp barrel, and elevated contact resistance that can cause voltage drop or heating under load. Wire insulation must withstand the connector's full operating temperature range (-65°C to 200°C); PTFE, polyimide, or silicone-insulated wire is recommended. Avoid PVC insulation for temperatures above 80°C. Before committing to a wire gauge, consult the connector assembly specification and perform pull-force and continuity testing on crimped samples.
• Are there specific moisture ingress concerns with the DL68G-22-19P1C011 when stored in humid environments or used in high-humidity outdoor applications? The DL68G-22-19P1C011 features an Environment Resistant rating and shielded design that provide good passive moisture protection during storage and field operation. However, moisture ingress can occur at the mating surface if the plug and receptacle are not properly mated, or if condensation forms during thermal cycling in high-humidity environments. The plastic insert material absorbs moisture slowly over extended periods; while polyimide (typical MIL-DTL-83723 material) has low moisture absorption compared to nylon, prolonged exposure to >90% relative humidity can increase electrical conductivity between contact pins, potentially causing crosstalk or leakage current. To mitigate moisture concerns, store unused connectors in sealed bags with desiccant, and keep mated connectors in a protective cover or potted enclosure in high-humidity environments. If the application requires continuous outdoor exposure in tropical or coastal regions, apply a thin hydrophobic conformal coating to the contact area and consider potting the connector as previously described. Monitor insulation resistance across unmated pins periodically during the operational life to detect incipient moisture degradation.
• How does the base product number DL68G22 relate to the full part number DL68G-22-19P1C011, and what options or variants exist for different pin counts or configurations? The base product number DL68G22 refers to the connector family and shell size (22), while the full part number DL68G-22-19P1C011 specifies the complete configuration including the 19-position insert (19), plug with male pins (P), and specific shell finish and contact options (1C011). TE Connectivity offers the DL68G22 family in multiple pin-count variants: 7-position, 9-position, 12-position, 15-position, 19-position, and others, each with a different insert designation (e.g., DL68G-22-7, DL68G-22-9, etc.). The 'P1C011' suffix indicates electroless nickel shell finish with gold-plated contacts suitable for industrial and military use; alternative finishes may be available with different suffixes for applications requiring stainless steel shells or alternative plating specifications. If your design currently uses a DL68G-22-19P1C011 but requires fewer signal lines, verify that the lower pin-count alternatives use the same shell size and bayonet lock mechanism to ensure receptacle compatibility. Consult the TE Connectivity Deutsch connector selection guide or contact a distributor to explore pin-count and finish options for your specific application.
• What are the fire and flammability characteristics of the DL68G-22-19P1C011, and is it suitable for applications with strict UL or FAA fire ratings? The DL68G-22-19P1C011 does not have a published Material Flammability Rating in its datasheet; this typically indicates the connector is evaluated on a system level rather than as an isolated component. The plastic insert material (polyimide or similar thermoplastic) used in MIL-DTL-83723 connectors is inherently flame-retardant and typically achieves UL 94 V-0 or V-1 ratings when tested in accordance with IEC 60695-11 standards. The aluminum shell does not contribute to flame propagation. However, if your application requires formal UL, FAA, or other certification for aerospace or high-reliability use, confirm the exact UL category rating and flammability test report for the specific connector variant. The DL68G-22-19P1C011 is often used in certified aircraft and defense platforms, suggesting compliance with applicable fire codes; verify this by requesting a compliance statement from TE Connectivity or the distributor. For critical applications, specify acceptance criteria based on UL 94 V-0 minimum rating or provide a formal fire test report as part of the design documentation.
• What is the correct procedure for unmating and cleaning the DL68G-22-19P1C011 contacts after exposure to dust, salt spray, or oxidation, and can contact maintenance be performed in the field? The DL68G-22-19P1C011 contacts are gold-plated copper alloy, which resists oxidation better than bare copper but can accumulate dust, salt residue, or light tarnish after prolonged exposure. To clean contacts in the field, carefully separate the plug and receptacle using the bayonet lock mechanism (rotate counterclockwise approximately 90 degrees) and visually inspect contact tines for visible contamination or corrosion. Use a soft, dry, lint-free brush or compressed air to remove dust or salt particles; avoid wire brushes or abrasive materials that can damage the gold plating. If oxidation or tarnish is present, lightly wipe the contact tines with a clean, dry cloth or use isopropyl alcohol (IPA) on a cloth—do not immerse the entire connector in liquid. Allow IPA to evaporate completely (1–2 minutes) before remating. Do not use aggressive solvents, pickling chemicals, or electrolytic cleaning methods in the field, as these can degrade the contact finish and plastic insert. If contacts show pitting or significant corrosion despite cleaning, replace the connector rather than attempting further field maintenance. After cleaning, test contact resistance using a four-wire resistance measurement if precision is required; acceptable contact resistance is typically <50 mΩ per contact for signal applications.
• How do I ensure the DL68G-22-19P1C011 meets electromagnetic shielding effectiveness requirements for sensitive signal integrity in avionics or defense applications? The DL68G-22-19P1C011 includes a shielded design with an aluminum shell providing passive EMI/RFI rejection, but the actual shielding effectiveness depends on proper installation and termination. To meet avionics or defense EMI requirements (often specified as 60–100 dB attenuation across 10 kHz to 18 GHz), ensure the plug shield is mated to a 360-degree shielded receptacle with continuous electrical contact around the entire periphery. The metal-to-metal contact between the connector shell and receptacle shell creates the shield path; any gaps, corrosion, or loose mating will degrade shielding effectiveness. Confirm the cable shield is bonded to an eyelet or ferrule that mates with the shield contact pins in the receptacle, creating a continuous path from cable braid through connector shell to the mating chassis. Test shielding effectiveness using a network analyzer or specialized EMI test fixture in accordance with MIL-DTL-83723 or MIL-STD-1377 methods; typical pass/fail criteria are insertion loss <0.5 dB (indicating minimal signal attenuation through the connector path) and shield transfer impedance <50 mΩ (indicating effective shield coupling). For applications with stringent EMI requirements exceeding the DL68G-22-19P1C011 baseline performance, specify additional shielding features such as ferrite filters or backshell grounding lugs.
• What are the thermal stress concerns when the DL68G-22-19P1C011 experiences rapid temperature cycling between -65°C and +200°C, and how do I predict connector reliability under these conditions? The DL68G-22-19P1C011 is rated for -65°C to 200°C operation, but rapid cycling between temperature extremes introduces mechanical stress due to differential thermal expansion between the aluminum shell (CTE ~23 ppm/K), plastic insert (~40–60 ppm/K), and copper alloy contacts (~17 ppm/K). During each temperature cycle, the insert and shell expand and contract at different rates, creating shear stress at the insert-to-shell interface and potentially loosening the crimp contacts. The mating contacts also experience thermal-induced contact-pressure relaxation, which can increase contact resistance over hundreds of cycles. To predict reliability, use the Coffin-Manson thermal fatigue model or conduct accelerated thermal cycling tests on samples: apply 50–100 cycles between -65°C and +200°C and measure contact resistance or insulation resistance at intervals. Expected reliability is 1000+ thermal cycles to 10% contact resistance increase under the DL68G-22-19P1C011 specification, though military-grade performance typically demonstrates better margins. Mitigate thermal fatigue by specifying low-CTE backshells or strain relief boots that reduce mechanical stress at the insert boundary, and by avoiding rapid temperature transients (e.g., use thermal shock protection in harsh environments).
• Is the DL68G-22-19P1C011 compatible with automated mating/demating mechanisms, or is it designed only for manual field maintenance? The DL68G-22-19P1C011 is designed for manual mating and demating using the bayonet lock mechanism, which requires rotational input (typically 1–2 finger turns) by an operator. The connector is not optimized for automated mating systems or robotic handling due to the bayonet's mechanical feedback requirements and the absence of standardized actuation interfaces (such as solenoid latches or motorized couplers). If your application requires frequent automated mating—such as in automated test equipment, production line connectors, or self-healing networks—consider alternative connector designs with quick-disconnect or snap-lock mechanisms designed for repetitive automated cycling. However, the DL68G-22-19P1C011 can be integrated into manual maintenance workflows or semi-automated systems with operator guidance. If the design requires automated demating for specific signals, implement a mechanical interface (such as a lever arm or cable-operated link) that translates linear motion into the required rotational bayonet unlock motion. Test any automated mating mechanism thoroughly to ensure it does not exceed the connector's rated mating force limits, which could cause contact damage or premature wear.
• What is the expected lead time for the DL68G-22-19P1C011, and what should I do if this connector is unavailable due to supply-chain disruptions? The DL68G-22-19P1C011 is a standard MIL-DTL-83723 connector from TE Connectivity Deutsch, typically stocked by major distributors with lead times of 2–6 weeks under normal market conditions. During supply-chain disruptions, lead times can extend to 12+ weeks, particularly if military or aerospace certification is required. To mitigate supply-risk, identify approved alternative manufacturers early in the design phase: Amphenol PT connectors (PTO series, 19-position variants) and Souriau connectors (Micro-Link or similar series) offer functional equivalents, though they may require design verification and re-certification. For programs with high volume demands, consider a qualification program for a second-source connector that meets equivalent performance requirements. Maintain a small stock of the DL68G-22-19P1C011 (typically 5–10% of annual usage) for field spares and repair inventory. If supply issues arise mid-program, coordinate with TE Connectivity on allocation guarantees or expedited fulfillment, and evaluate temporary design changes to use in-stock connector variants if feasible (e.g., 15-position instead of 19-position, if application logic permits). Document all supply-chain decisions and alternatives in the design documentation for future program audits.