BGA Rework Temperature Profile: A Complete Setup Guide

Introduction

A proper BGA rework temperature profile is critical to ensuring reliable solder joints and preventing PCB damage. Incorrect thermal settings can lead to defects such as cold joints, warping, or component failure.

What Is a Temperature Profile?

A temperature profile defines how heat is applied over time during the BGA rework process.

It typically includes:

• Preheating

• Soaking

• Reflow

• Cooling

Key Stages Explained

1. Preheating Stage

Gradually raises PCB temperature to avoid thermal shock.

Typical range:
100°C – 150°C

2. Soaking Stage

Ensures uniform heat distribution across the board.

Purpose:

• Activate flux

• Stabilize temperature

3. Reflow Stage

Solder balls melt and form joints.

Typical peak temperature:

• Lead-free: 230–260°C

• Leaded: 200–220°C

4. Cooling Stage

Controlled cooling prevents cracks and stress.

Factors That Affect Temperature Profiles

Different BGA rework solutions require different profiles based on:

• PCB thickness

• Component size

• Solder type

• Thermal mass

Best Practices

• Use thermocouples for accurate measurement

• Avoid overheating

• Build a profile database

• Standardize process settings

Learn the full process here:
BGA rework process guide (/bga-rework-process-guide)

Common Mistakes to Avoid

• Excessive peak temperature

• Uneven heating

• Ignoring PCB warpage

• Reusing incorrect profiles

FAQ

Q1: What temperature is used in BGA rework?
Typically 200°C–260°C depending on solder type.

Q2: Why is preheating important?
It reduces thermal stress and prevents PCB damage.