TMC LAB CNAS L8364 CMA 202119015835 Report Verification
研习社
PCB & PCBA

PCB / PCBA

For single/double-sided boards, multilayer boards, HDI and PCBA assemblies, we provide full-dimension testing and failure analysis: appearance, dimensions, plating, solderability, soldering quality and interlayer defects — locating problems and giving process improvement recommendations.

Pain Points

You are probably struggling with these issues

These are the things we hear most. If any of the following matches your situation, it is time for a systematic pre-compliance assessment.

1

Soldering defects (cold joints, solder bridges, voids) only surface at final assembly, doubling rework costs

2

Hidden risks such as interlayer cracking and CAF failure cannot be detected in advance

3

Returned boards from customer complaints cannot be root-caused, so entire batches are scrapped

Scope of Testing

What we do for this industry

Listed here by capability area; specific items are subject to the test plan.

  • Appearance and structure: Visual inspection, dimensional measurement, warpage, board thickness and hole diameter
  • Plating analysis: Plating thickness, plating composition, solderability, resistance to soldering heat
  • Soldering Quality: Solder joint appearance, X-Ray void rate, cross-section metallography, BGA solder joints
  • Electrical Performance: Continuity, insulation resistance, withstand voltage, impedance characteristics
  • Reliability: Thermal shock, temperature-humidity cycling, ionic contamination, CAF / insulation degradation
  • Assembly process: PCBA cleanliness, solder balls / residues, conformal coating inspection
  • Failure Analysis: Cross-section metallography, SEM / EDS, fracture surface localization and root cause determination
Standards

Main applicable standards

Below are the standards most frequently required in this industry; the actual applicable items depend on the target market and customer requirements.

Standard / Regulation Content
IPC-A-600 / IPC-6012 Acceptability of printed boards (rigid)
IPC-A-610 / IPC J-STD-001 Acceptability of electronic assemblies and soldering requirements
GB/T 4677 / IPC-TM-650 Test methods for printed boards
IPC-6012 / IPC-2221 Qualification and design of rigid printed boards
IEC 60068-2-14 / GB/T 2423.22 Temperature change (thermal shock)
IEC 61189 series Test methods for electronic materials, printed boards and assemblies
J-STD-003 / J-STD-002 Solderability of printed boards and components
IPC-TM-650 2.6.25 Ionic contamination testing

Standard versions are updated; please confirm the current valid version with us before formal submission.

Delivery Time

Appearance / dimensions / plating: 2~3 business days; cross-section metallography: 3~5 business days; full packages including X-Ray and ionic contamination: 5~7 business days.

Book a schedule
Capabilities

Main capability areas

Appearance & Dimensions

Full items: appearance, warpage, board thickness, hole diameter

Plating & Solderability

Plating thickness and composition, solderability, resistance to soldering heat

Soldering Quality

X-Ray void rate, cross-section metallography, BGA solder joints

Electrical Performance

Continuity, insulation, withstand voltage, impedance characteristics

Reliability

Thermal shock, temperature-humidity cycling, ionic contamination

Failure Analysis

SEM / EDS, fracture surface localization, root cause determination

Finalize your test plan for PCB / PCBA

Our technical consultants select the minimum necessary test combination based on your target market and customer requirements, and deliver a plan and quotation within 1 business day.

Call