Reworking Grid Array Connectors

Reworking
Grid Array
Connectors
Reworking grid array connectors must be accomplished
using hot air rework equipment. The recommended procedure is as follows:
1. From your rework equipment supplier, obtain a hot air
rework nozzle specifically designed for use with the
damaged connector.
2. Using a syringe or flux pen, add liquid flux to the connector solder joints allowing the flux to penetrate under
the body to the ground plane.
3. Lower the hot air rework device, set to a maximum of
250° C, down over the connector and allow the hot air
to circulate and liquefy the solder joints.
Note: It is important to use a bottom pre-heater to avoid
open solder joints because of PCB bow and twist
during the repair process. Before finalizing the rework
process, a thermal profile should be performed with
the thermocouples in direct contact with the insulator
SE and DP Array Connectors
body and solder leads to verify the temperatures of the
PCB and components.
4. Raise the hot air nozzle and remove the connector.
5. The board must then be cleaned and the pads leveled
with a solder wick mesh to make sure the pads are an
even height and no bumps or raised areas remain.
6. Using a manual or pneumatic dispensing device,
apply the solder paste to the pads.
7. Load the connector into position making sure all
leads are sitting in the paste.
8. Lower the hot air device over the connector, and
allow the paste to liquefy for a period of 30-90
seconds. Refer to the solder manufacturer’s
suggested reflow profile for temperature and time
specifications.
9. Clean the flux residue from the board unless “no
clean” solder paste was used.
EXAMPLE
Following is a example of rework specification for the
SEAF-20-06.5-SM-08-2-K connector.
Equipment Used
• Samtec SEAF-20-06.5-SM-08-2-K connector,
• Air-Vac Engineering DRS25 surface mount rework
system,
• Air-Vac Engineering N10.7LZ32.1-6.88 hot air nozzle,
• A8LZ20ST-SMF insertion tray.
Figure 1. Locations of T/C’s 2, 3 and 4
Thermocouple Placement
The thermocouples were placed according to Table
1 below. The nozzle, diffuser and T/C #1 locations
are not shown in Figure 1, but are represented in the
thermal profile (see Figure 2).
ID
Nozzle
Location
Nozzle
Array
Products
Air-Vac and Insertion Tool
Universal EZ Style Nozzle and
Insertion Tool
Air-Vac Dedicated
Nozzle Pt No.
1
SEAF-20-05.0-XX-10-X-XX
NA10LZ20ST-SMF
NA13LZ32.1-5.38
2
SEAF-20-06.5-XX-10-X-XX
NA10LZ20ST-SMF
NA13LZ32.1-6.88
3
SEAM-20-02.0-XX-10-X-XX
NA10LZ20ST-SMF
NA14.7LZ31.3-4.92
4
SEAM-20-03.5-XX-10-X-XX
NA10LZ20ST-SMF
NA14.7LZ31.3-6.42
5
SEAF-30-05.0-XX-10-X-XX
NA10LZ30ST-SMF
NA13LZ44.8-5.38
6
SEAF-30-06.5-XX-10-X-XX
NA10LZ30ST-SMF
NA13LZ44.8-6.88
7
SEAM-30-02.0-XX-10-X-XX
NA10LZ30ST-SMF
NA14.7LZ44-4.92
8
SEAM-30-03.5-XX-10-X-XX
NA10LZ30ST-SMF
NA14.7LZ44-6.42
9
SEAF-40-05.0-XX-10-X-XX
NA10LZ40ST-SMF
NA13LZ57.5-5.38
10
SEAF-40-06.5-XX-10-X-XX
NA10LZ40ST-SMF
NA13LZ57.5-6.88
11
SEAM-40-02.0-XX-10-X-XX
NA10LZ40ST-SMF
NA14.7LZ56.7-4.92
12
SEAM-40-03.5-XX-10-X-XX
NA10LZ40ST-SMF
NA14.7LZ56.7-6.42
NA13LZ70.2-5.38
Diffuser
Diffuser
T/C #1
Connector side of board
13
SEAF-50-05.0-XX-10-X-XX
NA10LZ50ST-SMF
T/C #2
Top edge of connector body
(attached with epoxy)
14
SEAF-50-06.5-XX-10-X-XX
NA10LZ50ST-SMF
NA13LZ70.2-6.88
15
SEAM-50-02.0-XX-10-X-XX
NA10LZ50ST-SMF
NA14.7LZ69.4-4.92
T/C #3
Corner solder joint
16
SEAM-50-03.5-XX-10-X-XX
NA10LZ50ST-SMF
NA14.7LZ69.4-6.42
17
DPAF-15-03.0-X-3-X-XX
NA3LZ15ST-DF
NA10.6LZ38-6.57
18
DPAM-15-07.0-X-3-X-XX
NA3LZ15ST-DMF
NA11.9LZ36.7-6.78
19
DPAM-15-14.0-X-3-X-XX
NA3LZ15ST-DMF
NA14.2LZ36.7-13.79
NA10.6LZ55.3-6.57
T/C #4
Center solder joint
Table 1 Thermocouple locations
Figure 2. Thermal profile using Air-Vac Engineering DRS25
surface mount rework system.
For more information on the hot air rework nozzles
or equipment used, please contact:
Air-Vac Engineering
30 Progress Ave., Seymour, CT 06483
Telephone: 203-888-9900
20
DPAF-23-03.0-X-3-X-XX
NA3LZ23ST-DF
21
DPAM-23-07.0-X-3-X-XX
NA3LZ23ST-DMF
NA11.9LZ54-6.78
22
DPAM-23-14.0-X-3-X-XX
NA3LZ23ST-DMF
NA14.2LZ54-13.79
NA10.6LZ70.4-6.57
23
DPAF-30-03.0-X-3-X-XX
NA3LZ30ST-DF
24
DPAM-30-07.0-X-3-X-XX
NA3LZ30ST-DMF
NA11.9LZ69.1-6.78
25
DPAF-08-03.0-X-3-X-XX
NA3LZ8ST-DMF
NA10.6LZ22.9-6.57
26
DPAM-08-07.0-X-3-X-XX
NA3LZ8ST-DMF
NA11.9LZ21.6-6.78
27
DPAM-08-14.0-X-3-X-XX
NA3LZ8ST-DMF
NA14.2LZ21.6-13.79
28
DPAF-15-03.0-X-8-X-XX
NA8LZ15ST-DMF
NA23.3LZ38-6.57
29
DPAM-15-07.0-X-8-X-XX
NA8LZ15ST-DMF
NA24.6LZ36.7-6.78
30
DPAM-15-14.0-X-8-X-XX
NA8LZ15ST-DMF
NA26.9LZ36.7-13.79
31
SEAF-20-05.0-XX-08-X-XX
NA8LZ20ST-SMF
NA10.5LZ32.1-5.38
32
SEAF-20-06.5-XX-08-X-XX
NA8LZ20ST-SMF
NA10.5LZ32.1-6.88
33
SEAM-20-02.0-XX-08-X-XX
NA8LZ20ST-SMF
NA12.1LZ31.3-4.92
34
SEAM-20-03.5-XX-08-X-XX
NA8LZ20ST-SMF
NA12.1LZ31.3-6.42
35
DPAF-23-03.0-X-8-X-XX
NA8LZ23ST-DMF
NA23.3LZ55.3-6.57
36
DPAM-23-07.0-X-8-X-XX
NA8LZ23ST-DMF
NA24.6LZ54-6.78
37
DPAM-23-14.0-X-8-X-XX
NA8LZ23ST-DMF
NA26.9LZ54-13.79
38
SEAF-30-05.0-XX-08-X-XX
NA8LZ30ST-SMF
NA10.5LZ44.8-5.38
39
SEAF-30-06.5-XX-08-X-XX
NA8LZ30ST-SMF
NA10.5LZ44.8-6.88
40
SEAM-30-02.0-XX-08-X-XX
NA8LZ30ST-SMF
NA12.1LZ44-4.92
41
SEAM-30-03.5-XX-08-X-XX
NA8LZ30ST-SMF
NA12.1LZ44-6.42
42
SEAF-40-05.0-XX-08-X-XX
NA8LZ40ST-SMF
NA10.5LZ57.5-5.38
43
SEAF-40-06.5-XX-08-X-XX
NA8LZ40ST-SMF
NA10.5LZ57.5-6.88
44
SEAM-40-02.0-XX-08-X-XX
NA8LZ40ST-SMF
NA12.1LZ56.7-4.92
45
SEAM-40-03.5-XX-08-X-XX
NA8LZ40ST-SMF
NA12.1LZ56.7-6.42
46
SEAF-50-05.0-XX-08-X-XX
NA8LZ50ST-SMF
NA10.5LZ70.2-5.38
47
SEAF-50-06.5-XX-08-X-XX
NA8LZ50ST-SMF
NA10.5LZ70.2-6.88
48
SEAM-50-02.0-XX-08-X-XX
NA8LZ50ST-SMF
NA12.1LZ69.4-4.92
49
SEAM-50-03.5-XX-08-X-XX
NA8LZ50ST-SMF
NA12.1LZ69.4-6.42
50
DPAF-08-03.0-X-8-X-XX
NA8LZ8ST-DMF
NA22.9LZ23.3-6.57
51
DPAM-08-07.0-X-8-X-XX
NA8LZ8ST-DMF
NA21.6LZ24.6-6.78
52
DPAM-08-14.0-X-8-X-XX
NA8LZ8ST-DMF
NA21.6LZ26.9-13.79