Visible Quality with 3D SPI – Improve Solder Paste Printing Accuracy by 60%

2025-06-06

Visible Quality – 3D SPI Ensures Reliable Solder Joints

1. Introduction

With the miniaturization of electronic components, fine-pitch components such as 01005 packages (0.4×0.2mm) and 0.3mm-pitch BGAs impose higher requirements on Solder Paste printing.

📊 Data Insight: Studies show that using 3D SPI technology can reduce printing defect rates by over 60% (IPC-7527).

3D SPI solder paste inspection improves printing accuracy

2. Technical Principles and Inspection Capabilities

2.1 3D Measurement Principles

·Structured Light Technology: Blue light phase-shift with ±1μm accuracy.
·Laser Triangulation: Effective for high-reflectivity surfaces.
·Multispectral Imaging: Captures 2D + 3D data simultaneously.

2.2 Key Inspection Parameters

Parameter	Detection Range	Precision	Ipc Standard
Volume	50–200% nominal	±5%	IPC-7527
Area	70–130% nominal	±3%	IPC-A-610
Height	±25μm	±1μm	J-STD-001
Position Shift	±50μm	±5μm	IPC-7351

3D SPI solder paste inspection improves printing accuracy

3. Comparative Analysis of Equipment Performance

3.1 SPI System Specs

Model	Resolution	Scanning Speed	Min. Component	Precision
Koh Young KY8030	5μm	45cm²/s	01005	±1μm
Omron VT-S730	7μm	35cm²/s	0201	±2μm
Saki 3D-SPI	10μm	50cm²/s	01005	±1.5μm

3.2 Smart Algorithm Applications

·AI classification accuracy: >99%
·Real-time Process Window Optimization (PWO)
·Live SPC monitoring and alerts

4. Process Optimization Applications

4.1 Printing Parameter Tuning

·Squeegee pressure & speed optimization
·Stencil separation speed calibration
·Gap compensation algorithm

4.2 Quality Trend Analysis

·Cpk > 1.67
·6σ process control baseline
·Auto defect pattern classification

5. Industry Application Cases

5.1 Automotive Electronics

·IATF 16949 certified
·0km defect rate < 50 PPM
·3,000-cycle thermal test passed

5.2 5G Communications

📶 Module yield > 99.9%
📡 Signal integrity ensured
⚡ Impedance deviation within ±5%

6. Economic Benefit Analysis

 ✅ Result: 3D SPI implementation delivers:  ✅ 25–40% higher first-pass yield
✅ 60% lower rework cost
✅ 50% fewer complaints

(Source: SMTA 2023 Annual Report) 