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Capability Specification

 Standard Readily available, no consultation needed.
 Tight Within capability, may be design dependent or require slightly longer lead-time.
 Development Entirely design dependent and only available after consultation.

Definition

Standard

Tight

Development

 Base Material FR4 (Tg 135)  
  FR4 (Tg > 150)  
  Rogers 4003  
  Rogers 4350  
  Rogers RT/Duroid  
  PTFE  
  Polyimide  
    
 Surface Finish Lead Free HASL Immersion Silver Carbon Ink
  ENIG (Immersion Gold) Standard HASL 
  Electroytic Gold (Hard) Immersion Tin 
  Ohmegaply  
    
 Solder Resists Green  
  Red  
  Blue  
  Black  
  Clear  
  Pyralux (coverlay)  

 Minimum Feature

 0.1mm

  0.076mm
    
 Legend White  
  Yellow  

 Minimum Feature

 0.154mm

  
    
 Peelable Resist Blue  
    
 Maximum PCB Size 267 x 432mm 267 x 483mm 
    
 Minimum Track & Gap 0.127mm 0.108mm 0.076mm
    
 Maximum Aspect Ratio 8:1  
    
 Maximum PCB Thickness 3.20mm  
    
 Minimum PCB Thickness   

 2 Layer

 0.20mm

  

 4 Layer

 0.50mm

  

 6 Layer

 0.70mm

  

 8 Layer

 1.00mm

  

 10 Layers +

 1.27mm

  
    
 Maximum Copper Weight   

 Inner Layers

 3oz

  

 Outer Layers

 4oz

  
    
 Minimum Hole (Drilled) 0.25mm 0.20mm 
    
 Minimum Plated Slot (Dia.) 0.45mm  
    
 Minimum Annular Ring 0.127mm 0.108mm 0.076mm
    
 Min. Inner Layer Clearance 0.254mm  0.216mm
    
 Min. Dist. Feature to Profile 0.254mm  
 

Latest News

Job Vacancy - Quality Engineer/Manager - July 2010

PWT Ltd is an ambitious prototype/small production manufacturer, well known and respected by customers both at home and overseas and we are currently seeking a Quality Engineer/Manager.

Full details of the position and contact details can be found in our Job Vacancies section here.