DIV44E17-35PC-023

FAQFrequently Asked Questions

• What are the key design considerations when integrating the DIV44E17-35PC-023 into a high-temperature aerospace application? The DIV44E17-35PC-023 is rated for operating temperatures from -65°C to 200°C, making it suitable for aerospace thermal environments. When designing for high-temperature operation, ensure that mated connector durability is validated under thermal cycling, as the gold-plated copper alloy contacts and aluminum shell will experience expansion and contraction. The crimp termination method requires careful attention to crimp tool calibration at temperature extremes, as contact resistance can drift if crimp parameters are not maintained. Additionally, verify that your backshell and cable jacket materials maintain flexibility and insulation properties across the full temperature range, as some polymers degrade significantly above 150°C.
• Can the DIV44E17-35PC-023 be used as a direct replacement for older MIL-DTL-38999 Series III connectors in existing military equipment? The DIV44E17-35PC-023 belongs to the MIL-DTL-38999 Series IV DIV family, which has improved contact geometry and shell design compared to Series III. While both series share the same 55-position, size 17-35 footprint, direct replacement may introduce compatibility risks. Series IV contacts have tighter mating force specifications and improved environmental sealing. Before substitution, verify that your existing mated plugs are Series IV compatible, as forcing a Series III plug into a Series IV receptacle can damage the gold plating and copper alloy contacts. Additionally, confirm that your equipment's connector retention mechanisms and panel cutout dimensions match Series IV specifications to avoid mechanical binding.
• What moisture and fluid ingress protection does the DIV44E17-35PC-023 provide, and what supplementary sealing measures are recommended for marine environments? The DIV44E17-35PC-023 is specified as fluid resistant, which indicates resistance to water spray and minor fluid exposure but not full submersion or pressure jet environments. In marine applications, the bulkhead panel mount design with push-pull fastening creates a potential ingress path at the cable entry point. Implement a conformal coating on the backshell crimp area or use a potted backshell assembly to create a moisture barrier. Consider applying a hydrophobic grease at the mating interface before connection, and ensure the mated plug has an equivalent or superior seal rating. The olive drab cadmium shell finish provides corrosion resistance in salt spray environments, but inspect regularly for white corrosion products at the contact interface, which can increase mating force and contact resistance over time.
• How does the crimp termination method of the DIV44E17-35PC-023 affect field repair and retermination in remote or deployed military installations? The DIV44E17-35PC-023 uses crimp termination on copper alloy contacts, which requires specialized crimping tools and trained personnel. Unlike solder termination, crimps cannot be easily reworked in field conditions without risk of contact damage or incomplete mating. If deployed in remote locations, maintain a stock of pre-assembled harnesses or qualified connector bodies with contacts already installed to enable rapid replacement. Field crimping of individual contacts is not recommended unless you have calibrated crimping tools and documented training procedures specific to MIL-DTL-38999 Series IV contact geometries. Improper crimping can result in high contact resistance, intermittent failures, or contact push-out during mating, which are difficult to diagnose in operational environments.
• What are the electrical performance implications of the unshielded design of the DIV44E17-35PC-023, and when should shielded alternatives be considered? The DIV44E17-35PC-023 is unshielded, meaning it lacks a Faraday cage around the pin array. This design is acceptable for low-frequency power and signal distribution in benign electromagnetic environments, but it offers no EMI rejection for high-frequency signals or proximity to radar, communications transmitters, or high-current switching circuits. In military aircraft or naval vessels with dense RF emitters, unshielded connectors can introduce crosstalk between adjacent pins and susceptibility to external electromagnetic interference. If your application requires signal integrity at frequencies above 1 MHz or operates near RF sources, evaluate shielded variants or implement external shielding around the connector. Shielded versions add weight and cost but provide insertion loss and cross-talk isolation specifications that support high-speed digital and sensitive analog signals.
• Is the DIV44E17-35PC-023 suitable for high-reliability aerospace applications requiring traceability and compliance with AS9102 requirements? The DIV44E17-35PC-023, manufactured by TE Connectivity Deutsch Connectors, is used in aerospace applications, but its RoHS non-compliant and REACH-affected status may introduce compliance complexities in some procurement chains. Verify that your aerospace prime contractor and end-customer accept the RoHS non-compliant status, as some programs mandate RoHS-compliant connectors due to supply chain or long-term supportability requirements. Additionally, confirm that your supplier maintains full traceability documentation including lot numbers, manufacturing dates, and certifications per AS9102 (aerospace form, fit, and function requirements). The olive drab cadmium finish and copper alloy contacts require documented verification of environmental compliance and process controls; request Material Certs and test reports for lot-specific validation if your program requires NADCAP certification or higher reliability classifications.
• What factors should be evaluated when choosing between the DIV44E17-35PC-023 receptacle and a corresponding plug connector for a military vehicle integration? The DIV44E17-35PC-023 is a receptacle with male pins, meaning the mated plug connector must have female sockets. In military vehicle applications, the choice between receptacle and plug mounting on the vehicle frame depends on cost, accessibility, and maintenance cycles. Panel-mount receptacles like the DIV44E17-35PC-023 are typically mounted on the vehicle structure with a bulkhead nut, while the field-removable cable assembly terminates in a plug. This configuration isolates the vehicle-side contacts from repeated connect-disconnect wear, extending vehicle-side contact life. However, evaluate whether field personnel can access the push-pull fastener under operational constraints (heavy gloves, limited visibility, mud or sand contamination). If accessibility is poor, consider whether a pin-and-socket reversal (plug on vehicle, receptacle on cable) would improve maintainability, accepting the trade-off of higher vehicle-side contact wear.
• How does the 55-position, size 17-35 configuration of the DIV44E17-35PC-023 compare to alternative connector form factors for wiring consolidation in aerospace applications? The DIV44E17-35PC-023's 55-position capacity allows significant wiring consolidation compared to multiple smaller connectors, reducing aircraft weight, panel cutouts, and overall harness complexity. However, 55 individual crimp contacts means higher assembly labor and greater risk of contact crimping errors during harness manufacturing. If your design can accommodate multiple smaller connectors (e.g., two or three 20-position connectors), evaluate the trade-off: smaller connectors offer easier individual contact rework and faster assembly but increase panel weight, cost, and maintenance complexity. The size 17-35 shell diameter is approximately 1.3 inches, which must fit within your panel layout constraints; verify that your equipment frame or bulkhead has sufficient real estate and that cable entry clearance allows for proper backshell attachment and strain relief.
• What preventive maintenance and inspection procedures should be implemented for DIV44E17-35PC-023 connectors in long-term military or marine storage? In long-term storage or operational environments, the olive drab cadmium-plated aluminum shell of the DIV44E17-35PC-023 can develop white corrosion (cadmium carbonate) if exposed to humidity cycles or salt air without protection. Implement routine visual inspections every 6-12 months, looking for white powdery deposits at the shell junction or contact interface. If corrosion is detected, gently clean the affected area with a dry brass brush or soft cloth; do not use solvents that may leave residues. Store disconnected connectors in a dry, temperature-controlled environment with silica gel desiccant or vacuum-sealed packaging to minimize humidity ingress. Before reconnection after extended storage, perform electrical resistance measurements on a representative sample to verify that contact corrosion has not increased contact resistance above specification. For marine platforms, apply a thin coat of moisture-displacement spray (e.g., MIL-PRF-23827) to the connector body and mated interface annually.
• Can the DIV44E17-35PC-023 be integrated into systems requiring EMC (electromagnetic compatibility) certification, and what testing or design precautions are necessary? The unshielded DIV44E17-35PC-023 can be integrated into EMC-certified systems, but its lack of shielding means that the associated harness and backshell become critical elements of the overall EMC design. For EMC compliance, the cable jacket material, backshell conductivity, and grounding path to the equipment frame determine system-level immunity to radiated emissions. Ensure that the crimped contacts are fully inserted and retained in the insert, as partially engaged contacts or contact flutter can introduce resonances that degrade EMI rejection. Route the cable away from high-frequency sources and shield it with braided mesh or foil if operating near RF transmitters. Perform radiated immunity testing (per MIL-STD-461 or equivalent) with representative connector assemblies installed; do not rely solely on individual connector test data, as the complete harness assembly's resonance and coupling characteristics are system-dependent.
• What are the insertion and extraction force specifications for the DIV44E17-35PC-023, and how do they change over repeated mating cycles? The DIV44E17-35PC-023 uses a push-pull fastening mechanism designed for MIL-DTL-38999 Series IV specifications. Typical insertion force is in the range of 5-15 pounds (depending on the mated plug design and contact condition), while extraction force is controlled by the push-pull collar to prevent accidental disconnection. Over repeated mating cycles (100+ cycles), the gold plating on the copper alloy contacts wears incrementally, and the plastic insert may experience stress relaxation, causing insertion force to decrease and contact wiping quality to degrade. After approximately 300-500 mating cycles in high-vibration military environments, the connector should be inspected for contact wear and considered for refurbishment or replacement. Maintain a mating cycle log for high-reliability applications and establish inspection intervals based on operational duty cycles. If your equipment requires > 1000 mating cycles over its service life, consider upgrading to a gold-plated or silver-plated contact system with enhanced durability.
• How should the DIV44E17-35PC-023 be specified and procured to ensure supply chain continuity and avoid obsolescence in military programs spanning 10+ years? The DIV44E17-35PC-023 is a legacy MIL-DTL-38999 Series IV component with stable long-term availability through TE Connectivity and authorized distributors. For 10+ year program support, establish a long-term supply agreement with the manufacturer or an authorized distributor that includes firm allocation of manufacturing capacity. Request historical and projected demand forecasts from TE Connectivity to verify that the base product number (DIV44E17) remains in active production. Document the specific part number, revision, and manufacturing date code in your design documentation and configuration management system; avoid generic references that could allow substitution with newer revisions that may have different contact geometry or shell specifications. For programs requiring ECCN compliance (this part is EAR99, freely exportable), verify that export status does not change due to ITAR revisions or manufacturer relocation. Consider designing in a qualified alternative connector from a different manufacturer (e.g., Amphenol PT, Molex) at the component level so that if DIV44E17 production is discontinued, you have a validated migration path that requires only harness redesign and re-qualification testing rather than equipment redesign.