Page 148 - Amphenol_Circular_12_C

Circular Connectors – PCB Contacts Amphenol
Alternate Positioning for MIL-DTL-38999 Aerospace

To avoid cross-plugging problems in applications requiring the use of more than one connector of the same series, size 38999
and arrange ment, alternate rotations are available as indicated in the accompanying charts.
In MIL-DTL-38999 Series I, II and III connectors the rotation is based on rotating the master key/keyway in the III
connector shell. HD
A plug with a given rotation letter will mate with a receptacle with the same rotation letter. Only the master key/keyway ro- Dualok
tates in the shell, and the insert always remains in the same position relative to the minor keys. Refer to diagrams below II
for each connector series.
I
SJT
LJT (MIL-DTL-38999 Series I) KEY/KEYWAY ROTATION
AB ANGLE OF ROTATION (Degrees) Accessories
Shell Aquacon
Size Normal° A° B° C° D° NORMAL
9 95 77 – – 113 B A D C ROTATION Herm/Seal
11 95 81 67 123 109 AB LETTERS PCB
13 95 75 63 127 115
15 95 74 61 129 116 HigH
17 95 77 65 125 113 MIL-DTL-38999 Speed
19 95 77 65 125 113 SERIES I LJT & SERIES II JT
˚
21 95 77 65 125 113 5 LJT REF CONNECTORS ALTERNATE Fiber
23 95 80 69 121 110 ROTATION CROSS Optics
25 95 80 69 121 110 -REFERENCE LETTERS
RELATIVE POSSIBLE POSITION Contacts
JT (MIL-DTL-38999 Series II) KEY/KEYWAY ROTATION OF ROTATED MASTER KEYWAY Connectors
(front face of LJT connector receptacle shown) Pins in Sockets in Cables
AB ANGLE OF ROTATION (Degrees) Alternate Alternate
Shell Rotations Rotations
Size Normal° A° B° C° D° PA = E SA = F
8 100 82 – – 118 NORMAL PB = R SB = T Transient eMi Filter
10 100 86 72 128 114 B A D C ROTATION PC = W SC = X
12 100 80 68 132 120 AB LETTERS PD = Y SD = Z
14 100 79 66 134 121 Explanation:
16 100 82 70 130 118 Use P at end of part number
18 100 82 70 130 118 for pin contacts in Normal 26482
20 100 82 70 130 118 position. Use S at end of Matrix 2
22 100 85 74 126 115 part number for socket
˚
24 100 85 74 126 115 10 JT REF contacts in Normal position.
Use cross-reference letters
Tri-Start (MIL-DTL-38999 Series III) KEY/KEYWAY ROTATION given in chart above for Matrix|pyle
alternate rotations. 83723 iii
Key & Keyway RELATIVE POSSIBLE POSITION
Shell Arrangement AR° BR° CR° DR° OF ROTATED MASTER KEYWAY
Size Identification Letter BSC BSC BSC BSC (front face of JT connector receptacle shown)
N 105 140 215 265 MIL-DTL-38999 SERIES III,
A 102 132 248 320 TRI-START CONNECTORS pyle 26500
B 80 118 230 312 MAIN ALTERNATE ROTATION
9 KEYWAY
C 35 140 205 275 CROSS-REFERENCE
D 64 155 234 304 LETTERS
E 91 131 197 240 AR ˚ Pins in Sockets in
N 95 141 208 236 BSC Alternate Alternate Matrix Release Crimp Rear 5015
A 113 156 182 292 Rotations Rotations
11, 13, B 90 145 195 252 BR ˚ PA = G SA = H
and 15 C 53 156 220 255 BSC PB = I SB = J
D 119 146 176 298 PC = K SC = L
E 51 141 184 242 PD = M SD = N Class L 22992
N 80 142 196 293 DR ˚ CR ˚ PE = R SE = T
A 135 170 200 310 BSC BSC Explanation:
17 and B 49 169 200 244 Use P at end of part number
19 C 66 140 200 257 RELATIVE POSSIBLE POSITION for pin contacts in Normal
OF ROTATED MASTER KEYWAY
D 62 145 180 280 (front face of Tri-Start position. Use S at end of Shells Back-
E 79 153 197 272 connector receptacle shown) part number for socket
N 80 142 196 293 contacts in Normal position.
Use cross-reference letters
A 135 170 200 310 given in chart above for
21, 23, B 49 169 200 244 alternate rotations. Others Options
and 25 C 66 140 200 257
D 62 145 180 280
E 79 153 197 272

Contact Amphenol Aerospace for more information at 800-678-0141 • www.amphenol-aerospace.com 147