IPC 7711A - 第161页
EQUIPMENT REQUIRED Soldering system Flat faced or cup-shaped tip Damp sponge Vacuum pick-up tool OPTIONAL EQUIPMENT Tweezers MATERIALS Flux-cored solder Flux Cleaner PROCEDURE 1. Install selected tip into the soldering h…
NOTES
IPC-7711A
Number: 5.3.2
Revision:
Date: 5/02
Subject: Chip Installation
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
Flat faced or cup-shaped tip
Damp sponge
Vacuum pick-up tool
OPTIONAL EQUIPMENT
Tweezers
MATERIALS
Flux-cored solder
Flux
Cleaner
PROCEDURE
1. Install selected tip into the soldering handpiece.
2. Start with tip temperature of approximately 315°C and change as necessary.
3. Position the component ensuring proper lead-to-land alignment. Hold the com-
ponent in place using the vacuum pick-up tool or tweezers. (See Figure 1.)
4. Apply flux and tack solder opposing corner leads. (See Figure 2.)
5. Apply flux to remaining lead/land areas. (See Figure 3.)
6. Clean tip using a damp sponge.
7. Apply solder to tip to create a bead of molten solder. (See Figure 4.)
8. Position tip so the solder bead contacts the top portion of leads. Slowly move
tip over the row of leads to form proper solder fillets at each joint. (See Figure
5.)
9. Repeat steps 7 through 8 on remaining sides of component.
10. Re-tin tip with solder.
11. Clean, if required, and inspect.
Figure 1 Position Component
Figure 2 Tack Lead
Figure 3 Flux Leads
Figure 4 Fill Tip
Figure 5 Solder Component
7711A
Rework of
Electronic Assemblies
Revision: A
Date: 5/02
Gull Wing Installation
Multi-Lead Method – Top of Lead
Number: 5.5.1
Product Class: R, F, W, C
Skill Level: Advanced
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: 5.5.1
Revision: A
Date: 5/02
Subject: Gull Wing Installation
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
--``,``,-`-`,,`,,`,`,,`---