TRANSPORTATION

Calpak USA manufactures transportation electronics under our AS9100 Rev D and ISO 9001 certified quality management system, applying process controls that meet or exceed the expectations of automotive OEMs and Tier 1 suppliers. While IATF 16949 is the standard specific to automotive production, Calpak USA's AS9100 framework provides equivalent rigor in areas of configuration management, risk-based process planning, documented work instructions, and statistical process control. At our Hawthorne, California facility, every transportation assembly is built to IPC-A-610 Class 2 or Class 3 workmanship standards depending on the application's reliability requirements. Calpak USA maintains full forward and backward component traceability, calibrated inspection equipment, and formalized corrective action procedures. For procurement managers evaluating contract manufacturers for ADAS modules, EV power electronics, or rail signaling boards, Calpak USA's quality infrastructure provides the documented process maturity and audit-ready systems that automotive and transportation programs demand for safety-critical electronic assemblies.

Transportation electronics in vehicles, rail systems, and marine vessels face continuous vibration exposure that stresses solder joints, component leads, and PCB-to-connector interfaces over thousands of operating hours. Calpak USA addresses these mechanical reliability challenges through multiple manufacturing controls at our Hawthorne, California facility. During assembly, we apply proper solder paste volumes verified by automated solder paste inspection to ensure robust joint formation, use adhesive pre-attachment for heavy components that could shift during vibration, and stake tall electrolytic capacitors and connectors with structural adhesive after soldering. Calpak USA's process engineers review pad designs and recommend reinforcement strategies for BGA packages and fine-pitch QFP components where vibration-induced fatigue cracking is a known failure mode. After assembly, we coordinate vibration testing per customer-specified profiles, which may reference MIL-STD-810 random vibration methods or automotive-specific standards like SAE J1455 for vehicle electronic equipment. Test results are documented and retained with each lot's traceability package for customer review.

Calpak USA performs environmental stress screening on transportation electronics to precipitate latent manufacturing defects before assemblies reach the field, where failure in a vehicle system could create a safety hazard. Common screening protocols include thermal cycling between minus 40 and plus 85 degrees Celsius or wider ranges per the customer's specification, powered burn-in at elevated temperature to stress semiconductor junctions and identify infant mortality failures, and random vibration screening to detect marginal solder joints and component bonds. At our Hawthorne, California facility, Calpak USA coordinates these screening activities with accredited environmental test laboratories, defining profiles based on the customer's end-use environment and applicable standards such as AEC-Q100 for automotive-grade component qualification or ISO 16750 for vehicle electrical and electronic equipment environmental conditions. Screening data including chamber temperature profiles, power monitoring logs, and post-screen electrical test results are compiled into screening reports that provide objective evidence of reliability for the customer's quality records and their end-customer submissions.

Calpak USA applies conformal coatings and potting compounds to transportation electronics that operate in under-hood, under-body, or exterior environments where exposure to moisture, salt spray, fuel vapors, and temperature extremes can degrade unprotected assemblies over time. Available conformal coating chemistries include acrylic for general automotive cabin electronics, urethane for engine compartment applications requiring chemical resistance, and silicone for assemblies facing extreme temperature swings. For fully encapsulated designs, Calpak USA dispenses two-part polyurethane or epoxy potting compounds into housings, using vacuum degassing and controlled cure profiles to eliminate voids and ensure complete encapsulation. At our Hawthorne, California facility, technicians mask connectors, sensor elements, and pressure-sensitive components before coating per IPC-CC-830 standards. Coating thickness is measured and documented, and adhesion is verified on process validation samples. For transportation OEMs targeting IP67 ingress protection on sealed electronic modules, Calpak USA's potting and conformal coating capabilities provide the environmental barrier needed to achieve the required protection rating.