For Complex & Reliable Interconnect
For Signal Integrity & Speed
For High Power & Harsh Environments
For Innovative Form Factors
PCB Assembly Technologies
PCBA Service Models
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STENCIL
For Complex & Reliable Interconnect
For Signal Integrity & Speed
For High Power & Harsh Environments
For Innovative Form Factors
PCB Assembly Technologies
PCBA Service Models
Value-Added Services
STENCIL
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Rigid PCB Capability
SENTAK Rigid PCB Manufacturing Capabilities
Document Control: This document outlines the comprehensive manufacturing specifications and technical competencies of SENTAK for standard and advanced Rigid Printed Circuit Boards. All capabilities are subject to formal Design for Manufacturability (DFM) review. This document does not cover Flex or Rigid-Flex PCB capabilities.
|
Category |
Standard Capability |
Advanced / Specialized Capability |
Notes & Standards |
|
Layer Count |
1 - 12 Layers |
Up to 32 Layers |
Prototype to high-volume production. |
|
Standard Board Thickness |
0.4 mm - 3.2 mm (0.016" - 0.126") |
0.2 mm (Ultra-Thin) to 8.0 mm (Thick Core) |
Final thickness tolerance typically ±10%. |
|
Base Material |
FR-4 (TG140, TG150, TG170), Halogen-Free FR-4 |
High-Tg (≥170°C), High-Frequency (Rogers, Taconic, Isola), High CTI (>600V), IGlass, Metal Core (Aluminum), Heavy Copper (≥3oz) |
Full range of laminate and prepreg from leading suppliers (Shengyi, ITEQ, Isola, Rogers, etc.). |
|
Copper Foil Weight (Finished) |
1 oz (35µm) Inner/Outer, 2 oz (70µm) Outer |
0.5 oz (18µm) to 10+ oz (350µm+) |
Supports mixed copper weights within a board. |
|
Maximum Panel Size |
24" x 24" (610mm x 610mm) |
26" x 30" (660mm x 760mm) |
Standard panel for optimal yield and process control. |
|
Minimum Single/Double Layer Core |
0.05 mm (2 mil) |
0.04 mm (1.6 mil) |
For sequential lamination builds. |
|
Parameter |
Standard Capability |
Advanced Capability |
Notes |
|
Board Outline Tolerance (CNC Routing) |
±0.10 mm (±0.004") |
±0.075 mm (±0.003") |
For standard complexity profiles. |
|
Board Flatness (Bow & Twist) |
≤ 0.75% per IPC-6012 |
≤ 0.50% |
For boards > 150mm. |
|
Edge Roughness (After Routing) |
Ra ≤ 3.2 µm (125 µin) |
Ra ≤ 1.6 µm (63 µin) with post-processing |
Standard routing. Smoother edges available. |
|
Counterbore/Countersink |
Supported |
Depth control ±0.10 mm |
For specific connector or mounting needs. |
|
Parameter |
Standard Capability |
Advanced Capability |
Notes |
|
Mechanical Drill Size (Min) |
0.15 mm (6 mil) |
0.10 mm (4 mil) |
Aspect Ratio up to 15:1. |
|
Laser Drill Size (Microvia) |
0.075 mm (3 mil) |
0.050 mm (2 mil) |
CO2/UV Laser for HDI. Aspect Ratio (1:1 max for capture pad). |
|
Aspect Ratio (Mechanical Drilling) |
10:1 |
15:1 |
Hole depth vs. drill diameter. |
|
Hole Registration Tolerance |
±0.075 mm (±3 mil) |
±0.050 mm (±2 mil) |
Hole to pattern. |
|
Non-Plated Holes (NPTH) Tolerance |
±0.05 mm (±2 mil) |
±0.025 mm (±1 mil) |
|
|
Back-Drilling (Controlled Depth) |
Supported |
Depth tolerance ±0.15 mm (±6 mil) |
For Stub Elimination in high-speed designs. |
|
Parameter |
Standard Capability |
Advanced Capability |
Notes |
|
Min. Trace/Space (Inner Layer) |
0.075 mm / 0.075 mm (3/3 mil) |
0.050 mm / 0.050 mm (2/2 mil) |
For 1 oz base copper. |
|
Min. Trace/Space (Outer Layer) |
0.10 mm / 0.10 mm (4/4 mil) |
0.075 mm / 0.075 mm (3/3 mil) |
For 1 oz base copper. |
|
Min. Annular Ring (PTH) |
0.10 mm (4 mil) |
0.075 mm (3 mil) |
|
|
Min. Annular Ring (NPTH) |
0.10 mm (4 mil) |
0.10 mm (4 mil) |
|
|
Copper Plating Thickness (Finished Hole) |
≥ 20 µm (0.8 mil) |
25 - 35 µm (1.0 - 1.4 mil) |
IPC-6012 Class 2 standard. |
|
Solder Mask Dam (Between Pads) |
0.075 mm (3 mil) |
0.050 mm (2 mil) |
For LPI Solder Mask. |
|
Finish Type |
Standard Thickness / Specification |
Key Characteristics & Applications |
|
HASL (Lead-Free) |
1 - 40 µm (variable), Flatness per IPC |
Economical, robust, good for general purpose. Thermal shock concern for fine-pitch. |
|
ENIG |
Ni: 3-5 µm / Au: 0.05-0.15 µm |
Flat surface, excellent for fine-pitch BGA, wire bonding, switch contacts. |
|
Immersion Tin |
0.8 - 1.5 µm |
Excellent solderability, flat, good for press-fit. Limited shelf life. |
|
Immersion Silver |
0.1 - 0.4 µm |
Excellent solderability, flat, good for high-frequency. Requires anti-tarnish packaging. |
|
OSP (Type 3) |
0.2 - 0.5 µm |
Low cost, flat, simple process. For quick-turn and single reflow. Limited shelf life. |
|
Electrolytic Hard Gold (Selective) |
Au: 0.5 - 2.5 µm (20-100 µin), Ni undercoat: 3-5 µm |
Extreme wear resistance for edge connectors, keypads, test points. |
|
ENEPIG |
Ni: 3-5 µm / Pd: 0.05-0.2 µm / Au: 0.03-0.05 µm |
Superior for multiple reflows and gold/ aluminum wire bonding. |
|
Parameter |
Standard Capability |
Notes |
|
Type |
Liquid Photo-Imageable (LPI), Both Sides |
High Tg, Halogen-Free options available. |
|
Color |
Green (Standard), Black, White, Blue, Red, Yellow |
Other colors upon request. |
|
Min. Web Width (Solder Mask Dam) |
0.075 mm (3 mil) |
Between SMD pads. |
|
Solder Mask Registration |
±0.075 mm (±3 mil) |
Relative to copper features. |
|
Legend/Silkscreen Ink Color |
White (Standard), Black, Yellow |
Epoxy-based ink. |
|
Legend Line Width |
0.10 mm (4 mil) minimum recommended |
|
|
Test Type |
Standard Capability |
Advanced / Compliance |
|
Electrical Test (E-Test) |
100% Flying Probe or Fixture-Based |
Netlist verification, continuity & isolation. |
|
Controlled Impedance |
±10% tolerance standard (±7% available) |
TDR coupon testing. Requires stack-up review. |
|
High Voltage Test (Hi-Pot) |
Up to 1500 VDC |
For specific safety requirements. |
|
Insulation Resistance |
> 500 MΩ (standard) |
Per IPC-TM-650 or customer spec. |
|
Dielectric Withstanding Voltage |
As per IPC-6012 |
|
|
Current Testing |
Custom Load Testing available |
For power board validation. |
|
Aspect |
Standard / Capability |
|
Primary Quality Standard |
IPC-A-600 (Acceptability), IPC-6012 (Performance) |
|
Standard Inspection Class |
Class 2 (General Electronic). Class 3 (High-Reliability) upon request. |
|
Inspection Method |
Automated Optical Inspection (AOI), Manual Visual Inspection (MVI). |
|
X-Ray Inspection |
2D/3D AXI for BGA, QFN, and internal defect analysis (upon request). |
|
Microsection Analysis |
Internal lab for process control and failure analysis (FA). |
|
Solderability Testing |
Per IPC-J-STD-003 to ensure finish performance. |
|
MSL (Moisture Sensitivity Level) |
Baking and dry packaging per IPC/JEDEC J-STD-033. |
|
Certifications (Typical) |
ISO 9001:2015, UL Recognized (E-file), RoHS, REACH compliant. |
Disclaimer
This capability chart serves as a general guideline. The manufacturability of any specific design is confirmed through our formal DFM review process, which analyzes your actual Gerber data, stack-up, and specifications.
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