IPC 7711A.pdf - 第83页
EQUIPMENT REQUIRED Soldering system Hot air pencil Hot air tip Tweezers MATERIALS Flux-cored solder Cleaner Tissue/wipe PROCEDURE 1. Remove conformal coating (if any) and clean work area of any contamination, oxides or r…
NOTES
IPC-7711A
Number: 3.5.2
Revision: A
Date: 10/03
Subject: SOT Removal
Page2of2
Copyright Association Connecting Electronics Industries
Provided by IHS under license with IPC
Not for Resale
No reproduction or networking permitted without license from IHS
--``,``,-`-`,,`,,`,`,,`---
EQUIPMENT REQUIRED
Soldering system
Hot air pencil
Hot air tip
Tweezers
MATERIALS
Flux-cored solder
Cleaner
Tissue/wipe
PROCEDURE
1. Remove conformal coating (if any) and clean work area of any contamination,
oxides or residues.
2. Adjust pressure output so hot air scorches a tissue from approximately 0.5 cm
away. (See Figure 1.)
3. Set heater temperature to approximately 425°C and change as necessary.
4. Install tip into the hot air pencil.
5. Apply flux to all lead/land areas. (See Figure 2.)
6. Position tip approximately 0.5 cm away from component. (See Figure 3.)
7. Direct hot air over component and heat until COMPLETE solder melt is
observed on ALL solder joints. (See Figure 3.)
8. Grasp component with tweezers and lift away from PWB. (See Figure 4.)
9. Release component from tweezers on a heat resistant surface.
10. Prepare lands for component replacement.
Figure 1 Adjust Air Pressure
Figure 2 Apply Flux
Figure 3 Melt All Joints
Figure 4 Lift Component
7711A
Rework of
Electronic Assemblies
Revision: A
Date: 10/03
SOT Removal
Hot Air Pencil
Number: 3.5.3
Product Class: R, F, W, C
Skill Level: Intermediate
Level of Conformance: High
Material in this manual, IPC-7711 Rework of Electronic Assemblies, was voluntarily established by Technical Committees of
IPC. This material is advisory only and its use or adaptation is entirely voluntary. IPC disclaims all liability of any kind as to the
use, application, or adaptation of this material. Users are also wholly responsible for protecting themselves against all claims
or liabilities for patent infringement. Equipment referenced is for the convenience of the user and does not imply endorsement
by IPC.
Page1of2
Copyright Association Connecting Electronics Industries
Provided by IHS under license with IPC
Not for Resale
No reproduction or networking permitted without license from IHS
--``,``,-`-`,,`,,`,`,,`---
NOTES
IPC-7711A
Number: 3.5.3
Revision: A
Date: 10/03
Subject: SOT Removal
Page2of2
Copyright Association Connecting Electronics Industries
Provided by IHS under license with IPC
Not for Resale
No reproduction or networking permitted without license from IHS
--``,``,-`-`,,`,,`,`,,`---