2.54×3.0mm Round-Hole IC Socket, Double-Row 2×4P, Overall Length 7.43mm, 1.12×2.1mm Four-Claw Contact, Inner-Gold Outer-Tin Plating, PPS Housing

This custom double-row 2×4P round-hole IC socket is built with industrial-grade PPS housing, precision four-claw spring contacts and functional-zoned inner-gold outer-tin plating. It solves the special component matching requirement while keeping high-level electrical and mechanical performance. Comparing with ordinary PA66/PBT IC sockets on market, this product delivers prominent advantages on high-temperature resistance, anti-vibration connection stability, chemical resistance and long-term service life.

High-Performance PPS Insulator Housing

Polyphenylene Sulfide (PPS) is premium engineering thermoplastic far superior to conventional nylon materials. PPS features outstanding heat resistance: long-term service temperature reaches 220 ℃, short-term peak heat resistance up to 260 ℃. It can fully sustain wave-soldering thermal shock without housing warping, softening or dimensional shift. Even working under continuous high-temperature condition, PPS retains most of its mechanical rigidity, so the socket will not loose mating precision after long-time operation. Besides thermal performance, PPS has low thermal expansion coefficient, great dimensional stability against temperature fluctuation. It resists most acid, alkali, organic solvent and industrial dust corrosion, preventing insulator aging and insulation failure in harsh workshop environment. Inherent UL94-V0 flame retardant property raises whole equipment safety level and lowers fire risk caused by short-circuit fault.

1.12×2.1 mm Precision Four-Claw Spring Contact

The phosphor-bronze four-claw contact is precisely sized 1.12×2.1 mm for round pin insertion. Unlike simple two-claw contacts, four-claw structure creates four independent uniform contact points surrounding the inserted pin. Multi-point contact enlarges contact area and clamping force, effectively reducing contact resistance. Under mechanical vibration, shock or slight pin position offset, four-claw structure can still maintain stable electrical connection and avoid intermittent signal dropout which frequently occurs in low-cost double-claw sockets. Raw phosphor-bronze material provides excellent elastic fatigue resistance. After repeated plug-in cycles, contact spring force remains stable without permanent relaxation. Insertion and extraction force is well-calibrated: easy for manual prototype debugging and also compatible for automated assembly operation.

Inner-Gold Outer-Tin Functional-Zoned Plating

Inner-Gold Outer-Tin plating optimizes performance by surface function zoning. The inner mating surface inside round hole is gold-plated. Gold provides excellent anti-oxidation and anti-tarnish capability. In humid, dusty or high-temperature working environment, gold surface keeps ultra-low stable contact resistance, guaranteeing distortion-free transmission for weak analog signal and high-speed digital signal. The outer solder tail for PCB soldering is pure tin-plated. Tin plating offers outstanding solder wettability, compatible with wave soldering, through-hole rework and manual repair. It forms robust solder joint between socket and PCB board, reduces risk of cold solder joint or solder joint detachment. This plating solution avoids excessive cost from full gold plating, meanwhile prevents poor contact risk from full-tin plating, achieving perfect balance between high-reliability performance and commercial cost control.

Custom Cut-Out Layout & Standard Compatibility

Even with custom cut-out modification, the socket still keeps industry-standard 2.54 mm pitch, 3.0 mm row width and 7.43 mm overall height. Customers can directly drop-in replace standard IC sockets; no complete PCB redesign is required, saving project development cycle and layout modification cost. Double-row 2×4P form factor provides enough signal channels for compact equipment, while cut-out openings leave physical clearance for chip body, mounting hardware or nearby components. Every production batch goes through strict incoming material inspection, in-process dimension monitoring and finished-product electrical testing to guarantee consistent quality for volume manufacturing.

Thanks to PPS high-temperature & corrosion resistance, four-claw anti-vibration contact performance and special custom cut-out feature, this double-row 2×4P IC socket is widely adopted for custom-fit connection tasks across multiple industries, covering industrial control, precision test instruments, embedded intelligent hardware, automotive auxiliary electronics and laboratory research equipment.

Industrial Control Equipment

It applies to custom PLC peripheral modules, special signal acquisition boards, field-bus interface units and relay assembly boards. Industrial site often exists high ambient temperature, mechanical vibration, dust and chemical vapor pollution. PPS housing stands harsh environmental erosion; four-claw multi-point contact prevents unexpected signal loss caused by vibration. Custom column cut-out makes space for special-shape IC modules and on-board components.

Precision Test & Measurement Instruments

Suitable for laboratory-grade testers, data acquisition loggers, automated test equipment (ATE), signal detection fixtures and portable analytical instruments. Precision measurement instruments require ultra-stable signal transmission. Gold-plated mating surface minimizes signal attenuation. 1000+ mating cycles support frequent module swap during debugging. Custom cut-out opening matches special-outline test chips. PPS material’s stable dimension ensures long-term test accuracy repeatability.

Embedded System & Intelligent Hardware

Used for custom MCU adapter boards, FPGA core carrier boards, special single-board computer peripherals and intelligent control units. During product R&D phase, engineers frequently plug and unplug core modules. This socket meets prototype debugging and small-batch production requirement. Custom empty cut-out layout solves mechanical interference problem between IC chip and socket body.

Automotive Auxiliary Electronic Systems

Fit for cabin control modules, dashboard signal boards and low-voltage on-board monitoring devices. Wide operating temperature range -40 ℃ ~ +85 ℃ adapts dramatic temperature variation inside vehicle cabin. Anti-vibration four-claw contact resists continuous vibration during driving to keep stable electrical connection.

Research & Educational Experimental Equipment

Applied to university electronic teaching kits, scientific-research experimental circuit and electronics competition prototype hardware. Through-hole soldering is convenient for lab assembly. Custom cut-out structure supports special experimental chip testing. Robust PPS housing extends service life for repeated student operation.

Custom High-End Consumer Electronics

Deployed in special smart control panels and professional audio-video peripheral hardware. Inner-gold outer-tin plating balances reliability and mass-production cost. RoHS compliant material supports global export requirement for consumer finished goods.

Q1: What benefit does PPS housing provide compared with PA66 nylon IC socket?
A: PPS is high-grade engineering plastic. It has far higher heat resistance, excellent dimensional stability and chemical corrosion resistance. PPS will not deform under wave-soldering heat shock or long-time high-temperature operation. It resists industrial dust, acid and solvent erosion, extending socket service life. It is more suitable for industrial, high-temperature and harsh-vibration application scenarios.

Q2: Is this socket compatible with standard 2.54 mm round pin headers?
A: Yes. 2.54 mm pitch follows international industry standard. The 1.12×2.1 mm four-claw contact is calibrated for standard round plug pins. Please note it is designed for round pins; square pins will generate excessive insertion force and may damage spring contacts.

Q3: What is the definition of 7.43 mm overall length?
A: 7.43 mm is total vertical height, measured from bottom PPS mounting surface up to top round-hole insertion opening. This low-profile height is for equipment with limited internal vertical space. We accept custom non-standard height modification upon request.

Q4: Why choose four-claw contact instead of two-claw contact?
A: Four-claw contact supplies four independent contact points against inserted pin. It brings larger clamping force, lower contact resistance and stronger anti-vibration & anti-shock capability. It maintains stable connection under minor pin offset and continuous vibration, effectively reducing intermittent signal failure risk, better for precision instrument and industrial environment.

Q5: Can this socket pass standard wave-soldering process?
A: Yes. PPS insulator withstands wave-soldering thermal impact without deformation. Tin-plated solder tail provides good solder wettability for full, reliable solder joints. Please follow standard soldering temperature profile; avoid over-long high-temperature dwell time.

Q6: What is rated current per pin?
A: Each contact is rated 3 A under room temperature. When multiple adjacent contacts carry high current simultaneously, appropriate current derating should be considered according to actual temperature rise to guarantee long-term stable operation.

Q7: Are products RoHS compliant and do you support customization?
A: All products comply with RoHS requirements, compliance test reports can be provided. We support custom pin count, cut-out position adjustment, special plating, halogen-free material and tape-and-reel packaging to satisfy personalized project requirements.

Q8: How many mating cycles can this socket endure?
A: Under standard plug-in operation, mechanical durability reaches minimum 1000 cycles. Contact force and electrical performance remain qualified. Forced insertion or bent pins will shorten service life.

Q9: What packaging options are available?
A: Standard packaging is bulk polybag for manual assembly. Tape-and-reel automated packaging is available for large-volume automated SMT/THT production with reasonable minimum order quantity.

Thank you for reviewing our custom 2.54×3.0 mm Double-Row 2×4P Round-Hole IC Socket with PPS housing, 1.12×2.1 mm four-claw contact, inner-gold outer-tin plating. This custom IC socket combines high-temperature resistant PPS material, anti-vibration multi-point contact structure and custom cut-out mechanical layout, delivering reliable customized connection solution for industrial control, precision test instruments, embedded hardware and other demanding electronic applications.

We supply one-stop connector service including product consultation, sample evaluation, bulk quotation, custom development and after-sales technical support. Our professional R&D and technical team can provide PCB footprint guidance, parameter optimization and personalized modification solution according to your equipment application and technical specifications.

We support global export business, stable mass-supply capacity and fast lead time. Complete datasheets, compliance certificates and test reports can be supplied to support your product development and mass-production progress.

If you have product inquiry, sample request, bulk order demand or any technical questions, please feel free to reach our sales and technical support team. We sincerely look forward to establishing long-term win-win cooperation with worldwide customers and providing high-quality connector products and professional service for your electronic projects.