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Backshells

Amphenol PCD Backshells offer strain relief, environmental protection, and 360° EMI/RFI shielding at the termination area of virtually any circular connector. These connectors feature a base material constructed of aluminum alloy, stainless steel, brass, or composite and a variety of finishes such as black zinc nickel, cadmium, electroless nickel, anodized black, passivated, and more. Amphenol PCD Backshells have custom designs available and meet or exceed RoHS/REACH compliance standards. Available in both military specifications and commercial types for any application, these backshells meet the Society of Automotive Engineers (SAE) AS85049 standard.

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RoHS Compliant

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Part #

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 36

M85049/10-75W
Amphenol PCD
1: $244.68
9In Stock

Mfr. Part No.
M85049/10-75W

Mouser Part No
523-85049/10-75W

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 36

Datasheet

9In Stock

$244.68

$214.23

$195.66

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 40

M85049/10-79W
Amphenol PCD
1: $297.71
19In Stock

Mfr. Part No.
M85049/10-79W

Mouser Part No
523-85049/10-79W

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 40

Datasheet

19In Stock

$297.71

$277.12

$277.11

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

M85049/11-11W
Amphenol PCD
1: $153.68
25In Stock

Mfr. Part No.
M85049/11-11W

Mouser Part No
523-85049/11-11W

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

Datasheet

25In Stock

$153.68

$141.71

$116.23

$107.82

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

M85049/11-13W
Amphenol PCD
1: $77.48
62In Stock

Mfr. Part No.
M85049/11-13W

Mouser Part No
523-85049/11-13W

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

Datasheet

62In Stock

$77.48

$71.95

$68.26

$67.50

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

M85049/11-148W
Amphenol PCD
1: $223.46
21In Stock

Mfr. Part No.
M85049/11-148W

Mouser Part No
523-85049/11-148W

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

Datasheet

21In Stock

$223.46

$207.36

$193.72

$190.61

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells 11 Backshell Env

M85049/11-150W
Amphenol PCD
1: $98.94
42In Stock

Mfr. Part No.
M85049/11-150W

Mouser Part No
523-85049/11-150W

Circular MIL Spec Backshells 11 Backshell Env

Datasheet

42In Stock

$98.94

$93.98

$92.67

$85.39

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

M85049/11-25W
Amphenol PCD
1: $121.58
79In Stock

Mfr. Part No.
M85049/11-25W

Mouser Part No
523-85049/11-25W

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

Datasheet

79In Stock

$121.58

$110.85

$107.93

$91.74

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

M85049/11-33W
Amphenol PCD
1: $86.79
25In Stock

Mfr. Part No.
M85049/11-33W

Mouser Part No
523-85049/11-33W

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

Datasheet

25In Stock

$86.79

$83.08

$76.38

$73.03

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

M85049/11-37W
Amphenol PCD
1: $154.92
28In Stock

Mfr. Part No.
M85049/11-37W

Mouser Part No
523-85049/11-37W

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

Datasheet

28In Stock

$154.92

$147.16

$125.07

$122.32

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells 11 Backshell Env

M85049/11-43W
Amphenol PCD
1: $100.26
26In Stock

Mfr. Part No.
M85049/11-43W

Mouser Part No
523-85049/11-43W

Circular MIL Spec Backshells 11 Backshell Env

Datasheet

26In Stock

$100.26

$93.59

$93.27

$88.89

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

M85049/11-47W
Amphenol PCD
1: $127.35
20In Stock

Mfr. Part No.
M85049/11-47W

Mouser Part No
523-85049/11-47W

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

Datasheet

20In Stock

$127.35

$116.13

$111.66

$107.93

$101.97

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

M85049/11-59W
Amphenol PCD
1: $152.96
18In Stock

Mfr. Part No.
M85049/11-59W

Mouser Part No
523-85049/11-59W

Circular MIL Spec Backshells BACKSHELL ENV ST OD CAD

Datasheet

18In Stock

$152.96

$142.64

$131.49

$130.47

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells 17 Backshell Env-EMI/RFI

M85049/1714W03
Amphenol PCD
1: $98.59
27In Stock

Mfr. Part No.
M85049/1714W03

Mouser Part No
523-85049/1714W03

Circular MIL Spec Backshells 17 Backshell Env-EMI/RFI

Datasheet

27In Stock

$98.59

$86.69

$83.36

$80.58

$76.13

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 16

M85049/1716W06
Amphenol PCD
1: $110.34
44In Stock

Mfr. Part No.
M85049/1716W06

Mouser Part No
523-85049/1716W06

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 16

Datasheet

44In Stock

$110.34

$98.08

$94.31

$91.16

$86.12

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 11

M85049/1811W03
Amphenol PCD
1: $75.67
102In Stock
100Expected 25/3/2026

Mfr. Part No.
M85049/1811W03

Mouser Part No
523-85049/1811W03

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 11

Datasheet

102In Stock

100Expected 25/3/2026

$75.67

$70.03

$67.55

$61.98

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

M85049/1811W03A
Amphenol PCD
1: $89.53
41In Stock

Mfr. Part No.
M85049/1811W03A

Mouser Part No
523-85049/1811W03A

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

Datasheet

41In Stock

$89.53

$81.58

$71.38

$71.36

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 13

M85049/1813W02
Amphenol PCD
1: $88.00
52In Stock

Mfr. Part No.
M85049/1813W02

Mouser Part No
523-85049/1813W02

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 13

Datasheet

52In Stock

$88.00

$77.06

$73.34

$69.83

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 15

M85049/1815W03
Amphenol PCD
1: $86.96
66In Stock

Mfr. Part No.
M85049/1815W03

Mouser Part No
523-85049/1815W03

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 15

Datasheet

66In Stock

$86.96

$78.31

$74.18

$74.11

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 15

M85049/1815W04
Amphenol PCD
1: $113.56
155In Stock

Mfr. Part No.
M85049/1815W04

Mouser Part No
523-85049/1815W04

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 15

Datasheet

155In Stock

$113.56

$103.93

$88.33

$81.02

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 15

M85049/1815W04A
Amphenol PCD
1: $101.46
35In Stock

Mfr. Part No.
M85049/1815W04A

Mouser Part No
523-85049/1815W04A

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 15

Datasheet

35In Stock

$101.46

$95.27

$89.25

$82.41

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 15

M85049/1815W05
Amphenol PCD
1: $95.42
104In Stock

Mfr. Part No.
M85049/1815W05

Mouser Part No
523-85049/1815W05

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 15

Datasheet

104In Stock

$95.42

$85.12

$80.30

$77.45

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 17

M85049/1817W05
Amphenol PCD
1: $104.39
46In Stock

Mfr. Part No.
M85049/1817W05

Mouser Part No
523-85049/1817W05

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 17

Datasheet

46In Stock

$104.39

$90.42

$84.76

$84.75

$76.85

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 17

M85049/1817W06
Amphenol PCD
1: $99.12
49In Stock

Mfr. Part No.
M85049/1817W06

Mouser Part No
523-85049/1817W06

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 17

Datasheet

49In Stock

$99.12

$91.28

$87.56

$81.18

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 19

M85049/1819W05
Amphenol PCD
1: $105.04
62In Stock

Mfr. Part No.
M85049/1819W05

Mouser Part No
523-85049/1819W05

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 19

Datasheet

62In Stock

$105.04

$89.29

$83.69

$79.70

View

Min.: 1
Mult.: 1

No

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 19

M85049/1819W07
Amphenol PCD
1: $140.46
52In Stock

Mfr. Part No.
M85049/1819W07

Mouser Part No
523-85049/1819W07

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 19

Datasheet

52In Stock

$140.46

$119.67

$112.44

$90.73

View

Min.: 1
Mult.: 1

No