CUNECTRACU-AL COMPOSITES · PCB/SMT
04 · APPLICATIONOn-Board Charging & Conversion

Automotive OBC and DC/DC Power Interconnect DFM Review

Compact switching loops, cooling interfaces and insulation tolerances need coordinated review.

Separate switching loops, DC distribution and mechanical support in OBC and DC/DC interconnects. Review parasitics, insulation spacing, cooling and thermal cycling against the actual layout. Project documents define qualification and system-safety requirements.

Project inputsElectricalVoltage, continuous/peak current, frequency and duty
Assembly boundariesThermalAmbient, cooling, hotspots and allowed rise
Assembly inputsMechanicalLoad, support, vibration and maintenance
Valid recordsEvidenceDrawing revision, applicable standards, samples and acceptance
CIRCUIT ARCHITECTURE & TOPOLOGY

Key Circuit Nodes & Hardware Interconnect Points

⚡

Commutation and DC paths

Define current and return loops before selecting busbar geometry.

Hardware: SMT Busbars
📐

Mechanical support

Separate installation torque, board loading and current-carrying functions.

Hardware: SMT Nuts & Standoffs
🔩

Spatial crossovers

Review clearances, tolerances, cooling parts and joint strain.

Hardware: SMT Power Jumpers

Recommended Hardware BOM Matrix

OEM MATCHED HARDWARE
FunctionProduct LineMaterial & FinishAmpacityEngineering Advantage
Commutation and DC pathsSMT Busbars ↗Confirm grade, temper and finish to drawingValidate actual assemblyDefine current and return loops before selecting busbar geometry.
Mechanical supportSMT Nuts & Standoffs ↗Confirm grade, temper and finish to drawingValidate actual assemblySeparate installation torque, board loading and current-carrying functions.
Spatial crossoversSMT Power Jumpers ↗Confirm grade, temper and finish to drawingValidate actual assemblyReview clearances, tolerances, cooling parts and joint strain.
PROJECT VALIDATION

Project Validation Plan & Records

Project validation plan — not a measured customer case

The Challenge

Compact switching loops, cooling interfaces and insulation tolerances need coordinated review.

Review Plan

Compare candidates under matched electrical, thermal and mechanical boundaries; define sample revision, sensing points, method and acceptance.

Validation Records to Collect

  • ✓ Four-wire resistance, contact drop and sensing locations
  • ✓ Ambient, load, cooling and steady-state temperature rise
  • ✓ Assembly loads and function before/after applicable exposure
  • ✓ Quotation, sample results, deviations and revision approval
ENGINEERING FAQ

Frequently Asked Questions

How should certification and quality records be checked?+

Check the valid document, legal entity, site, product scope and expiry. A quality-system certificate does not replace component or equipment safety approval.

What is needed for an RFQ and sample review?+

Provide drawing revision, electrical and assembly conditions, quantity and validation requirements. Agree review scope, samples and lead time for the project.

Designing Hardware for This Industry?

Share your target ampacity and space constraints for custom hardware BOM selection and rapid prototyping.

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