Form-Fit Mechanical Replacement for 4.0mm SMT Pins
High-density electronic architectures dictate rigorous Z-axis constraints while demanding robust board-to-board power delivery. The Jiatel 2.0×4.0mm series (Model: JT-PG-004) functions as a 1:1 mechanical drop-in alternative for legacy surface-mount pogo pins. Operating within a strict 4.0mm profile, this SMT interconnect integrates a generous 1.4mm compression stroke to dynamically absorb co-planarity tolerances across parallel PCBs. The internal beveled plunger geometry forces lateral bias during compression, ensuring uninterrupted contact with the barrel inner wall and locking contact resistance below 25mΩ even under continuous 50G mechanical shock.
Verified Technical Metrics
| Mechanical Profile | Ø 2.0mm Barrel | 4.0mm Resting Height |
| Deflection Stroke | 1.4mm Working Travel | 1.6mm Full Compression |
| Electrical Path Capacity | DC 12V / 1.0A Continuous Load |
| Kinematic Force Profile | 50gf @ 0.25mm | 100-150gf @ 1.60mm Stroke |
| Thermal Profile Resilience | -40°C to +150°C Operational Range |
Target SMT Deployments
- Wearable Tech: Smartwatch charging and data nodes.
- Medical DAQ: Portable patient monitoring interfaces.
- Industrial Testing: High-cycle “bed of nails” configurations.
- Automotive Modules: Dense in-cabin sensor routing.
Material Science Under Thermal Extremes
Maintaining a 100-150gf spring force across 10,000+ automated reflow cycles requires specialized internal calibration. The precision-turned brass plunger and barrel are protected by a heavy gold-plated layer (Min 1μ” Au) over an 80~100μ” nickel diffusion barrier, while the internal spring is wound from high-tensile SUS Stainless Steel. This metallurgical combination hardens the contact point against friction and prevents copper migration. Explicitly tested to sustain performance up to +150°C, this high-temperature rating prevents internal pin seizing and survives rigorous SMT wave and reflow profiles without losing spring resilience.
NPI Footprint Auditing & SMT Coplanarity
Surface-mounting standard 4.0mm interconnects requires strict control over pad alignment and vertical coplanarity to prevent angular tilt during automated pick-and-place routines. We enforce tight CNC turning tolerances on the flat base to maximize capillary solder action. Our engineering directive strictly prohibits the deployment of unverified digital mockups. Footprint matching and pad clearance audits are processed exclusively using official [Technical Datasheets] and dimensionally verified [2D Footprint Specs].
To confirm that our 2.0×4.0mm SMT configuration integrates seamlessly into your tight PCB layout without causing solder wicking, our Senior NPI Engineering Team executes comprehensive structural audits. To initiate a cross-reference evaluation, submit your SMT pad layout to our engineering desk: NPI Engineering Queue
SLA Commitment: Upon form submission to our NPI Engineering Queue, we guarantee the delivery of matched, production-ready PDF drawings within 12 working hours.
