408-10047 Datasheet, PDF (2/5 Pages) Tyco Electronics – Reasons for reissue of this instruction sheet are provided in Section 8, REVISION SUMMARY.

Seating Tool Assemblies 1804872-[ ], 1901220-[ ], and 1901221-[ ]
408-10047
1. INTRODUCTION
The seating tool assemblies listed in Figure 1 are
used to seat Multi–Beam XL vertical header
assemblies also listed in Figure 1. These header
assemblies have precision formed press–fit
(compliant pin) contacts to allow solderless pc board
installation.
Reasons for reissue of this instruction sheet are
provided in Section 8, REVISION SUMMARY.
2. DESCRIPTION (Figure 1)
Each seating tool consists of a signal insert, one or
two power inserts, and an adapter. The adapter
provides a surface to accept the force applied by the
application tool to seat the header assembly onto the
pc board. During seating, the seating tool sits inside
the header assembly and the inserts prevent the
contacts from pushing out of the header assembly.
CAUTION
!
If the seating tool and header assembly are
mismatched or are improperly aligned, damage
could occur to the tooling, header assembly, or
both.
S the seating tool, header assembly, and
application tool ram must be properly aligned
before cycling the application tool
Set the seating height to the dimension shown in
Figure 2 (application tool shut height will equal the
seating height PLUS the combined thicknesses of the
pc board and support fixture). After seating, a gap of
no more than 0.10 mm [.004 in.] between the header
assembly standoffs and the pc board is allowed.
NOTE
i
Use the seating height as a reference starting
point. This height may need to be adjusted to
obtain the amount allowed (maximum of 0.10 mm
[.004 in.]) between the standoffs of the header
assembly and the pc board.
3. REQUIREMENTS
3.1. PC Board Support Fixture (Customer Supplied)
A pc board support must be used to provide proper
support for the pc board and to protect the pc board
and header assembly from damage. The board
support fixture must be designed for specific needs
using the following recommendations:
S it should be at least 25.4 mm [1 in.] wider than
the pc board
S it should have a flat surface with a cutout of at
least 28.5 mm [1.12 in.] deep (to allow
adequate clearance for the header assembly)
3.2. Application Tooling
Power for the seating tool must be provided by
application tools (with a ram) capable of supplying a
maximum downward force of 890 Newtons (N)
[200 lb] per power contact,111 N [25 lb] per signal
contact, and 27 N [6 lb] per hold–down clip.
For available application tools, call PRODUCT
INFORMATION at the number at the bottom of
page 1.
CAUTION
!
Over-driving of the header assembly could cause
damage to the pc board.
4. SETUP
When setting up equipment to seat the header
assembly, pay particular attention to the following:
S the seating tool must be matched to the header
assembly
5. SEATING (See Figure 2)
1. Place the pc board on the support fixture.
2. Place the header assembly on the pc board so
that the contacts (and hold–down clips) are aligned
and started into the matching holes in the pc
board.
3. Hold the seating tool over the header assembly,
then lower the seating tool into the header
assembly until it bottoms on the floor of the header
assembly.
4. Center the seating tool (with the header
assembly) under the ram of the application tool.
Slowly lower the ram until it just meets the seating
tool. Verify alignment of pc board support, pc
board, header assembly, and seating tool.
CAUTION
!
Damage to the pc board, seating tool, or header
assembly may occur if the seating tool is not
properly inserted into the header assembly before
cycling the application tool.
5. Cycle the application tool to seat the header
assembly on the pc board. Then retract the ram,
and carefully remove the seating tool by pulling it
straight from the header assembly.
6. Check the header assembly for proper seating
according to the following:
a. the widest section of each compliant pin
contact is inside its intended pc board hole
b. the header assembly is seated on the pc
board with the seating height—measured from
the top of the header assembly to the top of the
pc board—given in Figure 2
c. if present, the gap between the standoffs and
the pc board is no more than 0.10 mm [.004 in.]
2 of 5
Tyco Electronics Corporation
Rev E