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Arrow A.E. Petsche Connectors

Home » Connectors » Connectors: Circular » EN3645

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EN3645 Circular Connectors

EN3645 is an Airbus specification that features one of the most reliable, versatile, and rugged circular connectors available on the market today. The EN3645 family of connectors is designed to meet the MIL-DTL-38999 design specification it was derived from. These connectors were first developed for the most demanding applications and severe environmental conditions. EN3645 can be configured for a wide range of different applications across multiple industries such as fiber optics, fail safes, filters, hermetics, PC tails, and much more.

Some of the features and capabilities of EN3645 connectors are:

  • Hermetically sealed options
  • Quick self-lock coupling eliminates the need for lockwire
  • Superior EMI shielding and Electrostatic Discharge Protection (EDP)
  • Excellent resistance to vibration, moisture, shock, and corrosion
  • Temperature range -65°C to 125°C (-85°F to 257°F)
  • Wide variety of insert options and accessories
  • Uses standard MIL-DTL-38999 contacts, assembly tools, and insert arrangements
  • Recessed pins provide added contact protection

Note: The EN3645 Airbus specification is interchangeable with MIL-DTL-38999 Series III connectors.

For more information on which EN3645 connector is appropriate for your application, call A.E. Petsche at 844-237-7600 to speak with one of our qualified experts.

EN3645 Product Specifications

These connectors are in full compliance with the EN3645 European standards. For more details, please consult the EN3645 specification located here.

PIN Diagram

EN3645 W/Socket 6 G N 35 B N
Basic series Plating
(W = olive drab cadmium,
F = nickel)
Shell style
(Table 1)
Shell size
(Table 2)
Grounding
(N = standard
insert not
grounded)
Contact
layout
(Table 3)
Contact
type
(Table 4)
Orientation
(Table 5)

Table 1: Shell Style

Designator Shell Style
0 Square flange receptacle
6 Plug
7 Jam nut receptacle

Table 2: Shell Size

A = 09 B = 11 C = 13 D = 15 E = 17 F = 19 G = 21 H = 23 J = 25

Table 3: Contact Layout

Layout
number
Contacts
Total
Number
22D 20 16 12 10 8
 9-35  6 6
 9-98  3  3
 11-02  2  2
 11-05  5  5
 11-35  13  13
 11-98  6  6
 11-99  7  7
 13-04  4  4
 13-08  8  8
13-26  8  6  2
13-35  22  22
 13-98  10  10
 15-05  5  5
 15-15  15  14  1
 15-18  18  18
 15-19  19  19
 15-35  37  37
 15-97  12  8  4
 17-02  39  38  1 Triax
 17-06  6  6
 17-08  8  8
17-26  26  26
 17-35  55  55
 17-99  23  21  2
 19-11  11  11
 19-32  32  32
 19-35  66  66
 19-53  53  53
 21-11  11  11
 21-16  16  16
 21-20  20  18  2 Qdx
 21-35  79  79
 21-39  39  37  2
 21-41  41  41
 21-75  4  4 TRiax
 23-21  21  21
 23-35  100  100
 23-53  53  53
 23-54  53  40  9 4
 23-55  55  55
 25-04  56  48  8
 25-07  99  97  2 Triax
 25-08  8  8 Triax
 25-11  11  2  9
 25-19  19  19
 25-20  30  10  13  4  3 Triax
 25-24  24 12  12
 25-29  29  29
 25-35  128  128
 25-37  37  37
 25-43  43  23  20
 25-46  46  40  4  2 Coax
 25-61  61  61

Table 4: Contact Type

Designator Contact Type
A Connector supplied less pin contact
B Connector supplied less socket contact
F Socket
M Pin

Table 5: Orientations (see page 73 of http://www.ttieurope.com/object/Souriau-38999-Series-III-8D-Series.html for detailed diagrams)

Shell Size Angles N A B C D E
 9(A)  A°  105  108  80  35  64  91
 B°  140  132  118  140  155  131
C°  215  248  230  205  234  197
 D°  265  320  312  275  304  240
11(B), 13(C)
& 15(D)
 A°  95  113  90  53  119  51
 B°  141  156  145  156  146  141
 C°  208  182  195  220  176  184
 D°  236  292  252  255  298  242
17(E), 19(F),
21(G), 23 (H)
& 25 (J)
 A°  80  135  29  66  62  79
 B°  142  170  169  140  145  153
 C°  196  200  200  200  180  197
D°  293  310  244  244  280  272

EN3645 – Circular Connectors

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