61083-182602LF

FAQFrequently Asked Questions

• What are the key design considerations when integrating the Amphenol 61083-182602LF into a high-density PCB layout? The 61083-182602LF is a 180-position connector with 0.80mm pitch across 2 rows, requiring careful trace routing beneath and adjacent to the connector footprint. The 0.224" (5.70mm) height above board and surface mount configuration demand that you account for solder reflow profiles and potential thermal stress on fine-pitch traces. The board guide feature aids alignment during assembly but occupies PCB real estate; verify that your layer stack and via placement do not conflict with the guide structure. With 180 positions in a compact form factor, ground return paths should be distributed across multiple vias near the connector to minimize impedance discontinuities, particularly if carrying differential or high-speed signals.
• Can the Amphenol 61083-182602LF be used as a direct replacement for legacy 0.100" (2.54mm) pitch rectangular connectors in retrofit applications? No. The 61083-182602LF operates at 0.80mm pitch, which is approximately 32 times smaller than 0.100" pitch. Any attempt to retrofit this connector into footprints designed for larger pitch connectors will result in incomplete contact engagement and electrical failure. If you are migrating from an older connector family to increase density, the entire PCB layout, mating receptacle, and backplane must be redesigned to accommodate the 0.80mm pitch. The BergStak® series uses center strip contacts optimized for this pitch, and substituting with mismatched pitch connectors will damage both the plug and receptacle.
• What stacking height configurations are available for the 61083-182602LF, and how do they affect system integration? The 61083-182602LF offers mated stacking heights of 6mm, 10mm, and 14mm, allowing flexibility in backplane or daughter card spacing. The 6mm stacking height is ideal for compact systems with tight vertical constraints, while 10mm and 14mm heights accommodate thicker PCBs, additional components, or mechanical standoffs on the receiving side. Your selection depends on the receptacle variant you pair with the 61083-182602LF plug and the available z-axis budget in your enclosure. Verify that your mating receptacle is rated for the same stacking height; mismatched heights will result in incomplete insertion and unreliable contact force.
• How does the 4.00µin (0.100µm) gold contact finish on the 61083-182602LF affect long-term reliability in industrial environments? The 4.00µin gold plating provides corrosion resistance and maintains low contact resistance over extended operating periods. In humid or chemically aggressive industrial environments, this thickness offers adequate protection for typical connector duty cycles. However, the 61083-182602LF with this finish is rated MSL 1 (unlimited moisture sensitivity), meaning it can be stored and handled without desiccant controls. The gold finish minimizes fretting wear during mating and unmating cycles, which is beneficial in applications requiring frequent reconfiguration. For ultra-high-reliability applications with thousands of connect-disconnect cycles, verify the expected contact wear rate against your application's maintenance intervals.
• What is the difference between the 61083-182602LF plug and its corresponding receptacle, and how do they establish reliable center strip contact? The 61083-182602LF is a plug with center strip contacts, meaning the contact elements are positioned along a central strip rather than distributed across the full connector body. The mating receptacle (a separate part) accepts these center strip contacts, achieving electrical connection through controlled contact force and alignment. The receptacle must be geometrically matched to the plug to ensure proper contact compression and prevent cold solder joints or intermittent connections. When specifying the receptacle, confirm it is explicitly rated as compatible with the 61083-182602LF plug; using a non-matching receptacle will result in improper contact geometry and connection failure.
• Can the Amphenol 61083-182602LF be used in applications requiring high-speed differential signaling, and what impedance considerations apply? The 61083-182602LF can support high-speed signaling, but its effectiveness depends on the PCB stackup, trace routing, and ground distribution around the connector. With 180 positions in a compact form factor, impedance control requires careful placement of ground vias and consistent trace geometry near the connector. If routing differential pairs, maintain consistent separation and symmetry to minimize skew and cross-coupling. The 0.80mm pitch constrains routing options; pairs should be spaced to maintain 50-ohm or 100-ohm differential impedance as required by your application. Perform pre-layout simulation and post-layout analysis to verify signal integrity, especially for signals exceeding 1 GHz.
• What are the assembly and reflow considerations for the surface mount 61083-182602LF to ensure reliable solder joints? The 61083-182602LF is designed for surface mount assembly and requires standard reflow soldering processes. The connector's thermal mass and solder pad configuration must be compatible with your reflow profile; excessively rapid heating can cause flux splattering or incomplete wetting, while insufficient peak temperature may result in cold solder joints. The board guide feature positions the connector during placement; ensure that your pick-and-place alignment tolerances account for this guide's mechanical constraints. After reflow, inspect solder fillets under magnification (minimum 20x) to confirm that all 180 contact pads have adequate wetting and no bridges between adjacent positions. The 0.80mm pitch leaves minimal clearance, so even small solder defects can cause intermittent failures.
• How should I select between the 61083-182602LF and other Amphenol rectangular connector series when designing for different pitch requirements? The 61083-182602LF's 0.80mm pitch positions it in the high-density segment of Amphenol's rectangular connector portfolio. If your application requires lower density or larger contact force, alternatives with 2.54mm or 1.27mm pitch may be more suitable but will occupy significantly more PCB area. Conversely, if you need even higher density, Amphenol offers sub-0.80mm pitch connectors, though these introduce additional assembly and routing challenges. The selection should balance density requirements, assembly feasibility, signal integrity needs, and cost. The 61083-182602LF is optimized for applications where the 0.80mm compromise between density and manufacturability is appropriate; using a coarser pitch wastes space, while finer pitches increase defect risk.
• What role does the board guide feature on the 61083-182602LF play in manufacturing and long-term reliability? The board guide on the 61083-182602LF provides mechanical alignment during pick-and-place assembly, reducing placement errors and ensuring repeatable positioning of all 180 contacts relative to the PCB pads. This guide also constrains lateral movement during reflow, minimizing the risk of tombstoning or misalignment under thermal stress. In operation, the board guide does not contribute to electrical contact; it serves purely as a mechanical locator. However, the guide's presence on the PCB side means you must reserve space in your layer stack and via pattern to avoid interference. Over many thermal cycles, the guide can develop stress cracks if the PCB material or solder joint properties do not match the connector's coefficient of thermal expansion; design your PCB stackup to minimize this mismatch.
• Is the Amphenol 61083-182602LF suitable for applications requiring frequent hot-swap or field replacement, and what are the contact wear implications? The 61083-182602LF can support hot-swap applications, but contact wear becomes a limiting factor with repeated mating cycles. The gold-plated contact finish (4.00µin) provides fretting corrosion resistance, extending the connector's serviceable life compared to unplated alternatives. Amphenol's center strip contact design distributes mechanical wear across the contact surface, but the small contact area inherent to 0.80mm pitch connectors means wear is more visible per cycle than with larger pitches. For applications requiring thousands of mating cycles, specify a contact force and engagement depth that maximizes contact durability while remaining within the connector's rated parameters. Field replacement procedures should include guidance on proper mating orientation and insertion force to avoid damaging the delicate center strip contacts.
• What RoHS and REACH compliance implications does the 61083-182602LF have for procurement and supply chain management? The 61083-182602LF is RoHS compliant and REACH affected, meaning it meets EU Directive 2011/65/EU restrictions on hazardous substances (lead, cadmium, mercury, etc.) and is subject to REACH chemical inventory requirements. Suppliers must provide appropriate documentation (RoHS compliance certificates, REACH statements) as part of the procurement package. The gold contact finish and connector materials have been formulated to maintain compliance; substituting with non-compliant materials or surface treatments will invalidate the connector's compliance status. If your end product or system is destined for EU markets, verify that Amphenol's compliance documentation aligns with your regulatory obligations. The REACH affected status means you should confirm that hazardous substances in the connector (if any) are disclosed in your product's chemical inventory for regulatory filings.
• How should thermal expansion mismatches between the 61083-182602LF and the PCB material be addressed in designs operating over wide temperature ranges? The 61083-182602LF's connector body (typically engineered polymer) and the PCB substrate (typically FR-4 or equivalent) have different coefficients of thermal expansion (CTE). Over wide temperature ranges (e.g., -40°C to +85°C), this mismatch creates mechanical stress at the solder interface and around the board guide. Designs should minimize this stress through careful via placement, local thermal relief features, and PCB material selection. If the application requires operation beyond standard industrial temperature ranges, evaluate materials with CTE closer to the connector's specifications or use flex circuits with limited mechanical constraint. Testing across your full operating temperature range before production release will reveal whether solder joint fatigue or contact resistance changes occur, allowing corrective design modifications.
• What are the practical differences between the 61083-182602LF and higher-density connector alternatives when space constraints are critical? The 61083-182602LF achieves moderate density (180 positions in a 2-row, 0.80mm pitch configuration) and represents a balance between manufacturability and compactness. Higher-density alternatives (sub-0.80mm pitch, multi-row arrangements) reduce footprint further but introduce challenges: finer pitch increases assembly defect rates, reduces signal isolation between adjacent contacts, and complicates manual rework if necessary. For space-critical applications, the 61083-182602LF's 0.224" (5.70mm) height above board and 180-position capacity may be sufficient. If density requirements exceed what the 61083-182602LF provides, evaluate whether alternative connection technologies (high-density ribbon, coaxial arrays, or proprietary solutions) might be more cost-effective and reliable than incrementally finer-pitch connectors.
• How does the MSL 1 (unlimited moisture sensitivity level) rating of the 61083-182602LF affect handling and storage protocols? MSL 1 classification means the 61083-182602LF is not sensitive to moisture absorption during storage and does not require desiccant packing or controlled humidity conditions. This simplifies procurement, inventory management, and field replacement logistics; the connector can be stored in standard conditions without degradation of solder joint reliability. Unlike higher MSL ratings (MSL 2-6), which require specific storage times and baking procedures before soldering, the 61083-182602LF can be assembled immediately upon receipt without pre-reflow baking. This characteristic reduces manufacturing process complexity and is particularly valuable in high-volume or distributed manufacturing scenarios where centralized desiccant control is impractical.
• What are the design trade-offs between choosing the 61083-182602LF for an application versus using multiple smaller connectors with coarser pitch? A single 61083-182602LF consolidates 180 connections into one compact module, reducing PCB area, layer count, and assembly complexity compared to multiple 2.54mm-pitch connectors (which would require approximately 20 connectors to achieve equivalent position count). The consolidation simplifies circuit routing and reduces the number of component placement steps. However, this trade-off introduces routing density challenges near the connector and increases the criticality of reflow process control; any defect affects many connections simultaneously rather than being isolated to a single smaller connector. Cost analysis should weigh the savings in PCB area and assembly labor against the added complexity of high-density routing and inspection. For applications where modularity and field repairability are priorities, multiple smaller connectors may be preferable despite the larger footprint.
• Can the 61083-182602LF be used in applications requiring shielding or EMI isolation, and what design modifications are needed? The 61083-182602LF itself does not include integral shielding; however, external shielding can be applied through careful PCB design and enclosure integration. Ground planes should be positioned immediately beneath or adjacent to the connector to create a return path for high-frequency signals and reduce EMI emissions. The 180-position connector can accommodate multiple ground pins; allocate ground connections at regular intervals (approximately every 10-20 signal positions) to maintain consistent shielding effectiveness. If differential pair isolation is critical, maintain consistent spacing between signal pairs and dedicate ground planes or guard traces to separate high-speed groups. External Faraday cages or shielded enclosures may be necessary for systems operating in electromagnetically noisy environments, but the connector itself remains unshielded; design accordingly.
• What are the selection criteria for choosing a mating receptacle that will reliably interface with the 61083-182602LF plug over its intended service life? The receptacle must match the 61083-182602LF in pitch (0.80mm), position count (180), contact geometry (center strip), and stacking height (select 6mm, 10mm, or 14mm as required). Amphenol and other manufacturers offer receptacle variants with different mounting styles (through-hole, surface mount, or backplane variants). The receptacle's contact material, plating thickness, and contact force must be compatible with the plug's specifications to ensure reliable engagement and minimal contact resistance over the connector's life. Request or verify datasheets confirming mechanical and electrical compatibility before design release. Mismatched receptacles—even from the same manufacturer but different product lines—can result in incomplete insertion, high contact resistance, or rapid contact wear.
• How should the 61083-182602LF be specified in a bill of materials (BOM) to ensure procurement of the correct connector configuration? The full part number 61083-182602LF uniquely identifies this connector: the base number 61083 designates the BergStak® series, 180 specifies the position count, 2 indicates the number of rows, 602 refers to the specific contact configuration and finish, and LF denotes the lead-free (RoHS-compliant) variant. In your BOM, include the full part number along with quantity, packaging type (Tape & Reel, as specified), and lead time requirements. Cross-reference with the manufacturer's current datasheet to confirm availability and any recent engineering changes. For high-volume orders, confirm with Amphenol whether the part number remains current or has been superseded; connector product lines occasionally undergo minor revisions that affect compatibility.
• What is the expected contact resistance of the 61083-182602LF, and how should this specification be verified during incoming quality inspection? The gold-plated center strip contacts of the 61083-182602LF are designed to maintain low contact resistance (typically in the milliohm range) when properly mated. The exact specification depends on the contact force, contact area, and plating thickness. During incoming inspection, measure contact resistance with a micro-ohmmeter on a sample of received connectors to establish a baseline and detect potential defects (e.g., insufficient plating, contact contamination). Resistance measurements should be taken immediately after mating and after simulated environmental stress (thermal cycling, humidity exposure) if the application requires enhanced reliability verification. If measurements deviate significantly from the baseline, investigate the root cause with the supplier before accepting the shipment; high contact resistance can propagate to field failures months after assembly.
• How does the ECCN (Export Control Classification Number) EAR99 designation affect the procurement and export of the 61083-182602LF? The 61083-182602LF is classified as EAR99 under the U.S. Commerce Control List, meaning it is controlled for export but generally eligible for export to most countries under the EAR (Export Administration Regulations). However, export restrictions apply to certain destinations (e.g., countries under U.S. embargo or listed entities). If your system or product incorporating the 61083-182602LF will be exported, verify that the destination and end-use comply with current EAR guidelines. For international procurement teams, coordinate with compliance and legal departments to confirm that export documentation and licensing requirements are met. The EAR99 classification should not significantly impact procurement within the United States or to allied nations, but it becomes relevant for global supply chain planning.