892-18-046-10-004101 Specifications and Engineering Notes
892-18-046-10-004101The 892-18-046-10-004101 is a specialized through-hole header connector designed for high-reliability board-to-board applications. As a product manufactured by Preci-Dip, this component operates within the Headers, Male Pins segment, offering a 46-position configuration with a standard 2.54mm (0.100") pitch. This component is engineered to facilitate dense, yet robust electrical connections in environments ranging from industrial automation to specialized instrumentation.
Design Parameters and Material Composition
The selection of interconnect hardware hinges upon the physical and chemical properties of the materials employed. The 892-18-046-10-004101 utilizes brass as the primary contact material, which offers a balance of electrical conductivity and structural stiffness. To ensure longevity and signal integrity, the mating surface features gold plating at a thickness of 10.0μin (0.25μm), providing significant corrosion resistance. In contrast, the termination side utilizes tin plating, which facilitates reliable soldering processes in standard through-hole manufacturing flows. The insulator is constructed from glass-filled polyamide (PA), chosen for its high thermal stability and UL94 V-0 flammability rating, allowing for continuous operation across a temperature range of -55°C to 125°C.
Engineering teams must account for the specific contact lengths to ensure mechanical clearance during assembly. The mating length is 0.587" (14.91mm), while the solder tail length is 0.118" (3.00mm), resulting in an overall contact length of 0.805" (20.44mm). When verifying board-to-board distance, the insulation height of 0.100" (2.54mm) dictates the baseline separation between PCBs. Ensuring these mechanical tolerances are met is vital for avoiding board warpage or stress on solder joints during long-term operational cycles.
| Parameter | Value | Engineering Meaning |
|---|---|---|
| Number of Positions | 46 | Defines the total I/O density capacity of the connector. |
| Pitch | 2.54mm (0.100") | Standard industry grid for PCB layout and trace routing. |
| Contact Finish (Mating) | Gold, 10.0μin | Ensures low contact resistance for stable signal transmission. |
| Contact Finish (Post) | Tin | Optimizes solderability for through-hole PCB assembly. |
| Operating Temperature | -55°C to 125°C | Indicates thermal robustness for harsh environments. |
| Mounting Type | Through Hole | Requires mechanical drilling and wave or manual soldering. |
| Insulation Material | Polyamide (PA) | Provides dielectric strength and thermal resistance. |
| RoHS Status | Compliant | Regulatory compliance for global supply chain usage. |
Performance Implications and Signal Integrity
The 892-18-046-10-004101 provides a stable interface due to its square contact geometry and gold mating finish. The choice of 10μin gold plating is a critical design decision; while thinner platings may suffice for non-critical, single-mate applications, the 0.25μm thickness provides sufficient durability for multiple mating cycles without rapid degradation of the contact surface. The utilization of a push-pull fastening style implies that the connector relies on frictional force between the male pin and the female receptacle for secure retention. Engineers must calculate the withdrawal force requirements for their specific housing, as push-pull headers lack the locking latches found in more complex connector systems.
Designers should be aware that the total current capacity for the connector array is not simply the sum of individual pin ratings multiplied by 46. Thermal accumulation within the connector body and the surrounding PCB layout creates a derating environment. While individual pins are rated for specific current loads, the simultaneous use of all 46 positions typically requires a derating factor, often between 0.6 and 0.8, depending on the ambient temperature and airflow within the enclosure. Consulting the current-temperature derating curve for this specific product series remains the standard practice for validating electrical safety margins.
Comparative Analysis of Sibling Components
Selecting the correct variant within the manufacturer's catalog requires identifying the differences between related headers like the 892-80-022-20-002101 or 450-80-212-00-106101. Variations in numbering often denote changes in pin counts, row configurations, or plating specifications. For instance, whereas the 892-18-046-10-004101 provides a fixed 46-position count, sibling parts might feature dual-row configurations or surface mount terminations. When seeking an equivalent or a cross-reference, engineers must verify that the contact geometry matches the existing female headers, as square pin profiles are not universally compatible with every high-density socket.
The 892 series parts are generally interchangeable regarding pitch, but the "style" identifier — such as the board-to-board focus — dictates the specific contact length. Swapping a high-profile header for a low-profile variant can result in an inability to reach the mating connector or, conversely, create excessive strain if the length is too great. Always review the mechanical drawings in the datasheet for the specific part number in question to ensure the footprint and mating height are identical before finalizing a replacement.
Design Guidelines for Through-Hole Interconnects
Proper integration of the 892-18-046-10-004101 into a PCB assembly requires attention to solder joint formation. Because these pins are through-hole, the hole diameter in the PCB must be slightly larger than the diagonal dimension of the square pin to allow for adequate solder flow and filet formation. Typically, a hole size 0.2mm to 0.3mm larger than the pin diagonal is sufficient for reliable wave or selective soldering. If the solder holes are too tight, the mechanical force required to press the header onto the board may damage the insulation housing or the copper pads surrounding the vias.
Moisture and contamination control also play a role in long-term reliability. While the polyamide insulation provides good dielectric properties, it is not an IP67-rated sealed interface. In industrial applications where the connector may be exposed to oils, dust, or high humidity, additional conformal coating or protective enclosures are recommended. For high-speed digital signals, verify that the length of the interconnect does not introduce significant impedance discontinuities or parasitic inductance that would degrade the signal's eye diagram at the system's operating frequency.
Frequently Asked Questions About 892-18-046-10-004101
Can the 892-18-046-10-004101 be used for automated reflow soldering?
This part is designed primarily for through-hole termination. While the polyamide insulator can withstand high temperatures, it is typically processed via wave or selective soldering. Consult the manufacturer's thermal profile data if attempting to use the part in a reflow process to ensure the material and finish can survive the peak temperatures.
How is the 892-18-046-10-004101 cross-referenced with other manufacturers?
Cross-referencing should be done based on pitch, pin count, contact length, and plating type. While many manufacturers produce 2.54mm headers, the specific mating length of 14.91mm is a precision parameter that must match to ensure reliable contact engagement. Always compare the mechanical drawings of the alternative part against the manufacturer's documentation.
What is the typical mating cycle rating for this gold-plated connector?
The 10μin gold plating provides a robust surface for standard industrial mating cycles. While specific limits are defined in the manufacturer's datasheet, this plating thickness typically supports several hundred cycles before the risk of contact resistance increase due to base metal oxidation becomes a factor.
Is the 892-18-046-10-004101 pinout suitable for high-speed differential pairs?
This connector is a general-purpose rectangular header. While it can transmit digital signals, it is not specifically optimized for high-speed differential pair impedance control. For high-frequency SerDes applications, consider dedicated high-speed connectors with integrated shielding and ground planes.
Engineering Checklist for Implementation
- Verify that the PCB drill diameter allows for a minimum of 0.1mm clearance around the square pin to permit adequate solder fillet formation.
- Ensure the mating header (receptacle) is rated for the same pitch and contact geometry to prevent physical stress on the pins.
- Review the operating ambient temperature to ensure that, after applying a 0.7 derating factor to the per-pin current, the system remains within the component's temperature limit.
- Inspect the soldering process; if using automated wave soldering, ensure that the heat exposure time does not exceed the maximum limits specified for the polyamide insulation material.
- Check the board-to-board spacing requirements against the overall height of the connector, accounting for PCB tolerances and potential connector tilt during assembly.
Successful implementation of this connector relies on accurate mechanical alignment and thermal management during the assembly process. The combination of high-reliability materials and standardized dimensions makes this component a candidate for systems requiring stable, repeatable connections. By observing the specified tolerances and electrical ratings, engineers can maintain signal integrity and ensure the longevity of the interconnect interface within their overall design.
