Information

50
MTA-156
.156 [3.96]
Recommended Mounting Hole Pattern
for .062 [1.57] Thk. PC Board
.210
[5.33]
A
.125
[3.18]
.156
[3.96]
.076
[1.93]
.045
[1.14]
.425
[10.80]
.100
[2.54]
.125
[3.18]
.450
[11.43]
.545
[13.84]
.073
[1.85]
.156
[3.96]
.066/.062
[1.68/1.57]
Edge of Board
Dia.
.167
[4.24]
.225
[5.72]
Min.
.078
[1.98]
90° Ref.
Typ.
Retention Tabs
4 Plc.
Post No. 1
Polarized
Retention Peg
Typ.
Peg Hole
Polarized
Retention Peg
Material and Finish
Housing — UL94V-0 rated, polyester,
white
Posts — Copper alloy, tin plated or
.000030 [0.00076] gold over nickel
Notes:
1. Post(s) can be omitted for keying pur-
poses. Specify the desired post(s) to
be omitted using the figure to identify
Post No. 1.
2. Peg holes are not required in
PC Boards when headers without pegs
are used.
3. One peg only on a 2 position header,
other position sizes have two pegs.
4. Headers with .00015 [0.00038] gold
plated post are available upon request.
Minimums may apply.
5. To determine header overall length
(Dim. A), multiply .156 x the number of
posts. Example: .156 x 10 posts equals
1.560 inches [39.62 mm].
For mateability options, see
matrix on pages 34, 35, 54
and 58.
For mating half visuals, use
connectors with a locking ramp
for polarization/retention pur-
poses, see pages 36 thru 39,
55, 60 and 62.
For polarizing purposes only
use connectors without a lock-
ing ramp. See pages 36 thru
39, 60 and 62.
Header Ordering
Information
The “Base Part Numbers”
Chart at right shows the base
part number and number of
posts available for the
described headers.
Prefixes and suffixes are deter-
mined by the number of post
positions in the header. For
example, the complete part
number for a 10-position
header with square posts with
pegs would be:
Base number 644615 plus
prefix-and-suffix
4- — -0
The correct ordering number is
4-644615-0
The part numbers in bold
face are the RoHS equivalent
version. Example:
No. of
Lead Free
Pos.
RoHS
Prefix/Suffix
2 3-644615–2
thru
18 4-644615-8
See page 15 for an explanation of
RoHS lead free equivalents.
PC Board Hole Diameters
Square Round
Post Post
.069/.065 .054/.050
[1.75/1.65] [1.37/1.27]
Note: Consult Product Drawing
for details on placing headers
onto PC boards.
Base Part Numbers
Square Posts Round Posts
Without Pegs With Pegs Without Pegs With Pegs
Header RoHS Header RoHS Header RoHS Header RoHS
Part Nos. Equiv. Part Nos. Equiv. Part Nos. Equiv. Part Nos. Equiv.
Standard UL94V-0, Tin Plated
644611 32–48 644615 32–48 644612 32–48 644616 32–48
Standard UL94V-0, .000030 [0.00076] Gold Plated
644627 32–48 644631 32–48 644628 32–48 644632 32–48
Note: All RoHS equivalent part num-
bers may not be available upon cat-
alog release. If the number you
need is not available, please contact
Product Engineering to expedite
your request.
Note:
Select load headers (omitted pin
headers) are available upon request.
Please contact product engineer or
product manager for details.
MTA-156 Polarized Lock Headers—Straight
MTA, CST-100 II, SL-156 and
AMP Economy Power (EP) Connectors
Catalog 82056 Dimensions are in inches and Dimensions are shown for USA: 1-800-522-6752 South America: 55-11-2103-6000
Revised 6-08 millimeters unless otherwise reference purposes only. Canada: 1-905-470-4425 Hong Kong: 852-2735-1628
specified. Values in brackets Specifications subject Mexico: 52-55-1106-0800 Japan: 81-44-844-8013
www.tycoelectronics.com are metric equivalents. to change. C. America: 57-1-254-4444 UK: 44-208-420-8341