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The product information in this catalog is for reference only. Please request the Engineering Drawing for the most current and accurate design information.
IT1 Series q High Speed, Matched-Impedance, Parallel Board-to-board Connector System
s Transmission Module - 252 Contacts
q 2-row type
Mating side
80.5 ±0.5
78.5 ±0.3
b row
a row
252
(4.2)
A
2
1
23
Board Mounting side
Locking Protrusion
(2 Sides)
79.5 ±0.3
Part Number
IT1-252P/44-23H
IT1-252P/44-30H
CL No.
641-0231-8
641-0304-0
Board-to-board Distance
23mm
30mm
A
10.4
13.9
B
10.4
13.9
C
10.6
17.6
RoHS
YES
s Connection Table
The connection table indicates contact numbers in the mated condition,as illustrated in Fig. 1.
a row
b row
α - β
a 0 1 - a126
α - β
a44 - a83
α - β
a86 - a41
α - β
b 0 1 - b126
α - β
b44 - b83
α - β
b86 - b41
Signal
? ?
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Signal
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Signal
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Signal
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Signal
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Signal
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? ?
? ?
a 0 5 - a122
a53 - a74
a95 - a32
b 0 5 - b122
b53 - b74
b95 - b32
Ground
a 0 6 - a121
a 0 7 - a120
Ground
a54 - a73
a55 - a72
Ground
a96 - a31
a97 - a30
Ground
b 0 6 - b121
b 0 7 - b120
Ground
b54 - b73
b55 - b72
Ground
b96 - b31
b97 - b30
a 0 8 - a119
a56 - a71
a98 - a29
b 0 8 - b119
b56 - b71
b98 - b29
Fig.1
Signal
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Signal
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Signal
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Signal
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Signal
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Signal
? ?
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? ?
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a17 - a110
a62 - a65
a107 - a20
b17 - b110
b62 - b65
b107 - b20
Ground
a18 - a109
a19 - a108
Ground
a63 - a64
a64 - a63
Ground
a108 - a19
a109 - a18
Ground
b18 - b109
b19 - b108
Ground
b63 - b64
b64 - b63
Ground
b108 - b19
b109 - b18
a20 - a107
a65 - a62
a110 - a17
b20 - b107
b65 - b62
b110 - b17
Signal
? ?
? ?
? ?
? ?
? ?
Signal
? ?
? ?
? ?
? ?
? ?
Signal
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? ?
Signal
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? ?
? ?
Signal
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? ?
? ?
? ?
? ?
Signal
? ?
? ?
? ?
? ?
? ?
a29 - a98
a71 - a56
a119 - a 0 8
b29 - b98
b71 - b56
b119 - b 0 8
Ground
a30 - a97
a31 - a96
Ground
a72 - a55
a73 - a54
Ground
a120 - a 0 7
a121 - a 06
Ground
b30 - b97
b31 - b96
Ground
b72 - b55
b73 - b54
Ground
b120 - b 0 7
b121 - b 06
a32 - a95
a74 - a53
a122 - a 0 5
b32 - b95
b74 - b53
b122 - b 0 5
Signal
? ?
? ?
? ?
? ?
? ?
Signal
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? ?
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? ?
? ?
Signal
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Signal
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Signal
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? ?
? ?
? ?
? ?
Signal
? ?
? ?
? ?
? ?
? ?
a41 - a86
a83 - a44
a126 - a 0 1
b41 - b86
b83 - b44
b126 - b 0 1
Ground
a42 - a85
a43 - a84
Ground
a84 - a43
a85 - a42
Ground
b42 - b85
b43 - b84
Ground
b84 - b43
b85 - b42
A299
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