Since 1986, Sierra Proto Express has been a leading supplier of high technology, quick-turn Printed Circuit Boards. ISO-9001:2000 and MilSpec certified, Silicon Valley based company.
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Our Full Service Advantage Product

With Full Service Advantage PCBs you get dependable quality and quicker turn times at competitive prices. Our CAM Engineers personally verify your design for manufacturability. With each Full Service Advantage order we send an Evidence of Quality report, which shows a cross-section of your board as proof to the quality and reliability.

With these PCBs we do a full Design Rule Check (DRC) so our customers can be confident that their Gerber files will contain no manufacturability issues. We offer Same Day service for 2 Layers, and 1 to 5 day service on all other Layer counts. If your technology falls outside our Full Service Advantage Product, for example, controlled impedance/ dielectrics, boards with micro-BGA requirements, boards with high frequency requirements, etc., speak to an Account Manager at 1-800-763-7503 x 500 and see our complete Quick Turn, Standard Technology Capability guide.

We recommend our Full Service Advantage Product if you need standard 2-10 Layer PCBs, no minimum quantity, standard FR-4, and hi-temp FR4, different surface finish options (HAL, Hard Gold, Bondable Gold, Immersion White Tin, Immersion Silver), 1-5 day turn, even same day, and net-list testing.



Our restrictions are not that restrictive at all! Over 90% of our customer designs fit these specs.
Standard Full Service FAQ
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Our Guarantee
We are committed to your total satisfaction. If there is ever any issue with our product or delivery
WE WILL MAKE IT RIGHT
No excuses. No hassles.
Full Service Advantage Product Design Guidelines and Restrictions
Layers 2 to 10 Layers
Data We prefer 274X Extended Gerber format If your file is not in 274X, send an Aperture file. Please see FAQ below for what files to include.
Turn-time 1,2,3,4,5 and 10 business days from order date ( Same Day turns available for 2 layer boards )
Cut-off time 5PM PST
Minimum Order Quantity/ Maximum Order Quantity[1 piece Minimum] [50 pieces Maximum]
Maximum board sizeDimensions up to 16" X 22" (and minimum is 0.5" X 0.5")
MaterialFR4, FR406 (Custom quotes available for other materials)
Thickness .062" ( we will provide custom quote for all other thicknesses )
Arrays Arrays are allowed.
Scoring V Scoring is allowed.
SMT pads Allowed.
Minimum trace & space5 mils (0.005")
Preferred Manufacturing CriteriaMinimum air-gap of .005" (space between any two copper features)
Minimum annular ring .005" (applies to both plated and non-plated holes)
Minimum inner layer drill to copper spacing .013" (applies to both plated and non-plated holes)
Standard Copper OverplateSurface pattern: Nominal 1 Oz./sq foot. (0.0013" to 0.002") (33 microns to 51 microns)
Copper PlatingInner layer 0.5 oz or 1 oz. Outer layer (finished) 1 oz or 2 oz
Plating on Hole walls0.0008" to 0.0012" (20 microns to 30 microns)
Surface FinishHASL(Solder), Hard Gold, Bondable Gold, Immersion White Tin , Immersion gold , Immersion Silver
Gold FingersGold Fingers allowed on HASL finish only
Minimum hole sizeDown to 10 mils finished hole size
Maximum Hole Sizes Plated holes: 246 mils. Non-plated holes: 199 mils
Maximum Hole Density65 holes/sq inch (total holes on a board/area of board)
Minimum width of annular rings 5 Mils (0.005")
Internal Cutouts/Slots Upto 10 internal cutouts/slots allowed.
SoldermaskGreen LPI; openings in the solder-mask layers should be 6 mils larger than the copper feature. Soldermask allowed on both sides.
Silkscreen/LegendWhite only, Both sides allowed. (Minimum 5 mil trace width for legend)
Electrical TestingElectrical 100% Net-list testing. Optional for 1,2,3 and 4 layers (excluding same day and 1 Day turn time). Mandatory for 5 layers and above. Mandatory also on same day and 1 Day orders.
Shipping optionsFedEx, UPS, Will Call
Payment termsCredit Card (Purchase Order allowed only for select customers who have set up terms)
Additional requirementsFor 4 Layer or more orders, please include stack-up information. Please be available to clarify any discrepancies by providing your 24 hour contact number. IMPORTANT NOTE: Do not upload any Mil-Spec, Class 3, Defence/Military or ITAR designs for Full Service processing. Speak directly to your account rep for such jobs.
RESTRICTIONS (for some special boards, instant pricing is not available..we will send you Custom Quote instead) For special features like Milling, Blind/Buried vias, Controlled Impedance, Controlled Dialectrics, Edge plating, Mixed Copper layers, etc., instant pricing is NOT available.
However, please use the online matrix anyway marking the checkbox for special features and do upload your file. Our sales staff will review your file and quickly send you a Custom Quote.
What are the steps in ordering Full Service Advantage PCBs?   

What if my design doesn't meet the Specs?  

Full Service Advantage Product FAQ 

What files do I need to include?  

What are the most common reasons why my Full Service Advantage order may go on hold?  

I understand my order may go On Hold (temporarily) if Sierra Proto Express engineers find my design is missing some information or has some discrepancy. If so, how do I get my order Off Hold?   

How does the on-hold time affect the due date of my order?  

What is the cancellation policy?  

How do I calculate turn time? What is the cut off time to place an order?   

Billing Questions  



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