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Rigid PCB Capabilities | Sierra Circuits

rigid flex pcb engineering design

Get a quote for your rigid PCBs

Transform your PCB manufacturing experience with Sierra Circuits, your trusted partner for top-notch rigid PCBs. Whether you require a straightforward single-layer circuit board with rapid delivery or a sophisticated 30-layer mil-spec PCB featuring exotic metals, we have you covered. Sierra Circuits is your go-to solution for an instant quote and swift manufacturing, with the capability to deliver your boards in as little as 48 hours.

  • Manufactured in Silicon Valley
  • On-site inventory of the finest materials
  • Up to 30 layers
  • 2-day turn-times available
  • Component procurement
  • PCB assembly

What sets Sierra Circuits apart is our commitment to excellence. All our PCBs are manufactured in Silicon Valley, ensuring proximity to cutting-edge technology and materials. Our on-site inventory boasts the finest materials, allowing us to meet your requirements for up to 30 layers of precision and complexity. Experience the advantage of a 2-day turn-time for your projects, providing unmatched speed without compromising quality.

A reliable partner for your manufacturing needs

With Sierra Circuits, you’re not just getting circuit boards; you’re gaining a reliable partner for your manufacturing needs. We prioritize customer satisfaction and aim to exceed expectations at every step. Our experienced team is ready to collaborate with you, ensuring that your rigid PCBs meet the highest standards of quality and reliability.

Whether you’re a seasoned professional or a newcomer to the world of PCBs, Sierra Circuits is here to simplify the manufacturing process. Our user-friendly quote system streamlines the initial steps, providing you with the information you need promptly. Trust Sierra Circuits for your rigid board needs and experience the convenience, speed, and precision that sets us apart in the industry.

Sierra Circuits supports IPC-2581.

IPC-2581 stands as a cornerstone standard in the manufacturing of your rigid PCBs, transforming the dynamics of design data exchange. Its open, vendor-neutral format enhances communication efficiency, providing a comprehensive platform for sharing crucial details like layer stack-up and drill specifications. Embracing IPC-2581 not only fosters superior collaboration but also minimizes errors during data transfer, ultimately elevating the precision and reliability of the entire fabrication process.

Product Promise

Sierra Circuits manufactures and assembles your rigid PCBs with full intellectual property protection.

PCB highlights:
  • Up to 30 layers
  • Board thickness: .005″ – .300″
  • Max panel size: 21″ x 30″
  • Min trace and space: .002″
  • Solder mask feature tolerance: .001″
  • Blind and buried vias
Fabrication highlights:
  • Routed arrays
  • Edge plating
  • Bevels
  • Heat sinks
PCB classifications:
  • IPC 6012, class 1, 2 and 3
  • MIL-PRF-55110
  • MIL-PRF-31032/1
  • MIL-PRF-31032/2
Quality management systems:
  • AS9100D
  • ISO 9001:2015
  • ISO 13485:2016
Board parameters for rigid PCBs
STANDARDADVANCEDMICRO
Min Layer Count 111
Max Layer Count 303030
Min Board Thickness.010” (.254 mm).005” (.127 mm).005” (.127 mm)
Max Board Thickness.300” (7.62 mm).300” (7.62 mm).300” (7.62 mm)
Min Core Thickness.004” (.102 mm).002” (.051 mm).002” (.051 mm)
Min Dielectric.004” (.102 mm).003” (.076 mm).002″ (.051 mm)
Min Starting Copper Foil Weight 3 microns3 microns3 microns
Max Finished Copper Thickness (O/L)4 oz (118 ml)6 oz (177 ml)1 oz (30 ml)
Max Finished Copper Thickness (I/L)4 oz (118 ml)4 oz (118 ml)0.5 oz (15 ml)
Min Panel Size 12” x 18” (30 x 46 cm)12” x 18” (30 x 46 cm)12″ x 18″ (30 x 46 cm)
Max Panel Size 12” x 18” (30 x 46 cm)21” x 29” (53 x 74 cm)18″ x 24″ (46 x 61 cm)
Smallest Mechanical Drill Diameter.0059” (.150 mm).0059” (.150 mm).0059″ (.150 mm)
Smallest Laser Drill Diameter.005″ (.127 mm).004″ (.102 mm).004″ (.102 mm)
Min Finished Hole Size.004” (.102 mm).002” (.051 mm).002″ (.051 mm)
Max Through Hole Aspect Ratio (depending on board thickness and finish hole)10:110:1> 20:1
Max Laser Via Aspect Ratio.75:1.75:1.9:1
Blind Via Finished Hole Size.004” (.102 mm)Plated ShutPlated shut
Buried Via Finished Hole Size.004” (.102 mm).002” (.051 mm).002″ (.051 mm)
Min Trace and Space.004” (.102 mm).003” (.076 mm).002″ (.051 mm)
Min Pad Size for Test.005” (.127 mm).005” (.127 mm).005″ (.127 mm)
Process Pad Diameter D + .012” (.305 mm) (1-mil (.025-mm) annular ring)D + .004” (.102 mm) (tangency)D + .004” (.102 mm) (tangency)
Stacked Vias YesYesYes
Min Wire Bond Pad Size> .006” (.152 mm).004” (.102 mm).004″ (.102 mm)
Controlled Impedance Tolerance 10%5%5%
Solder Mask Registration.002” (.051 mm).001” (.025 mm).001″ (.025 mm)
Solder Mask Feature Tolerance.0015” (.038 mm).001” (.025 mm).001” (.025 mm)
Solder Mask Min Dam Size (based on green soldermask color).005” (.127 mm).004” (.102 mm).004″ (.102 mm)
Min Diameter Route Cutter Available.024” (.610 mm).021” (.533 mm).021″ (.533 mm)
Routed Part Size Tolerance.005” (.127 mm).003” (.076 mm).003″ (.076 mm)
Laser Hole Location Tolerance.0005” (.013 mm).0005” (.013 mm).0005″ (.013 mm)
Laser Routed Part Size Tolerance ( can only be done with panels < .032” thick).001” (.025 mm).001” (.025 mm).001″ (.025 mm)
Bow and Twist Tolerance Per IPC specPer IPC specPer IPC spec
Thickness Tolerance (based on board thickness)10%5%5%
Sequential Laminations 3 or less lamination cycles4 lamination cycles5 lamination cycles
Buried Vias YesYesYes
Blind Vias YesYesYes
Conductive Filled Vias YesYesYes – Cu plate shut
Non Conductive Filled Vias YesYesYes
Surface finish parameters for rigid PCBs
STANDARDADVANCEDMICRO
HASL (Vertical or Horizontal)YesYesNo
Lead Free HASL YesYesNo
OSP (Shikoku F2)YesYesYes
OSP (Entek)YesYesYes
ENIG (Electroless Nickel/Immersion Gold)YesYesYes
Immersion Silver YesYesNo
Electrolytic Soft Gold YesYesYes
Electrolytic Hard Gold YesYesYes
Selective Gold YesYesYes
Solder mask finish parameters for rigid PCBs
STANDARDADVANCEDMICRO
Semi – Glossy YesYesYes
Glossy YesYesYes
Matte YesYesYes
Solder mask color parameters for rigid PCBs
STANDARDADVANCEDMICRO
Green YesYesYes
Black YesYesYes
Red YesYesYes
Blue YesYesYes
Yellow YesNoNo
White YesNoNo
Clear YesYesYes
Bright White YesNoNo
Purple YesNoNo
Legend mask parameters for rigid PCBs
STANDARDADVANCEDMICRO
All Colors YesYesYes
Mechanical parameters for rigid PCBs
STANDARDADVANCEDMICRO
Routed Array YesYesYes
V Score, Edge to Copper.01”.007” (.178 mm).007″ (.178 mm)
V Score Angles 35°, 45°, 60°35°, 45°, 60°35°, 45°, 60°
Countersink YesYesYes
Counterbore YesYesYes
Bevel YesYesYes
Milling+/- .003” (.076 mm)+/- .002” (.051 mm)+/- .001” (.025 mm)
Edge Castellation YesYesYes
Edge Plating YesYesYes
Heatsinks NoYesNo
Electrical testing for rigid PCBs
STANDARDADVANCEDMICRO
10 Volt YesYesYes
40 Volt (Burn-In Boards)YesYesYes
250 Volt NoYesYes
500 Volt NoYesYes
Hi Pot NoYesYes
Laminate material parameters for rigid PCBs
STANDARDADVANCEDMICRO
Arlon 85NT NoYesNo
Bergquist NoYesNo
Flexible Polyimide NoYesYes
Hybrid Constructions YesYesYes
Isola 370HR YesYesYes
Isola FR406 YesYesYes
Isola FR408 HR YesYesYes
Isola P95 YesYesYes
Isola P96 YesYesYes
Iteq IT180 YesYesYes
Nelco BT N5000 YesYesYes
Nelco N4000-13 YesYesYes
Nelco N4000-29 YesYesNo
Nelco N7000-2 YesYesYes
No Flow Prepreg YesYes