Connectors – Mouser Singapore

.hide-partial { max-height: none; } .show-more { display: none; }

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.

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Types of Connectors

List Images

Results: 11,079

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Part #

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 21

M85049/1821W08
Amphenol PCD
1: $116.47
38In Stock

Mfr. Part No.
M85049/1821W08

Mouser Part No
523-85049/1821W08

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 21

Learn More

Datasheet

38In Stock

$116.47

$94.67

$90.77

$88.37

$84.16

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 23

M85049/1823W06
Amphenol PCD
1: $116.77
43In Stock

Mfr. Part No.
M85049/1823W06

Mouser Part No
523-85049/1823W06

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 23

Learn More

Datasheet

43In Stock

$116.77

$101.80

$95.53

$90.97

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 23

M85049/1823W08
Amphenol PCD
1: $117.72
39In Stock

Mfr. Part No.
M85049/1823W08

Mouser Part No
523-85049/1823W08

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 23

Learn More

Datasheet

39In Stock

$117.72

$104.23

$98.98

$94.26

$89.77

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 23

M85049/1823W09
Amphenol PCD
1: $129.10
16In Stock
25Expected 28/10/2026

Mfr. Part No.
M85049/1823W09

Mouser Part No
523-85049/1823W09

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 23

Learn More

Datasheet

16In Stock

25Expected 28/10/2026

$129.10

$109.74

$100.83

$96.03

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 25

M85049/1825W04
Amphenol PCD
1: $119.75
29In Stock
25Expected 1/10/2026

Mfr. Part No.
M85049/1825W04

Mouser Part No
523-85049/1825W04

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 25

Learn More

Datasheet

29In Stock

25Expected 1/10/2026

$119.75

$102.92

$96.46

$91.87

$87.49

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

M85049/1825W06
Amphenol PCD
1: $113.22
116In Stock

Mfr. Part No.
M85049/1825W06

Mouser Part No
523-85049/1825W06

Amphenol PCD

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

Learn More

Datasheet

116In Stock

$113.22

$104.62

$100.04

$95.28

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 25

M85049/1825W08
Amphenol PCD
1: $130.19
20In Stock
100On Order

Mfr. Part No.
M85049/1825W08

Mouser Part No
523-85049/1825W08

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 25

Learn More

Datasheet

20In Stock

100On Order

$130.19

$110.68

$103.74

$98.79

$94.08

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

M85049/1825W09
Amphenol PCD
1: $130.04
33In Stock
125On Order

Mfr. Part No.
M85049/1825W09

Mouser Part No
523-85049/1825W09

Amphenol PCD

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

Learn More

Datasheet

33In Stock

125On Order

$130.04

$112.70

$111.78

$100.60

$95.81

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 25

M85049/1825W10
Amphenol PCD
1: $128.07
61In Stock

Mfr. Part No.
M85049/1825W10

Mouser Part No
523-85049/1825W10

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 25

Learn More

Datasheet

61In Stock

$128.07

$118.55

$113.98

$110.17

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 25

M85049/1825W10A
Amphenol PCD
1: $132.67
25In Stock

Mfr. Part No.
M85049/1825W10A

Mouser Part No
523-85049/1825W10A

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST OD CAD SZ 25

Learn More

Datasheet

25In Stock

$132.67

$118.43

$118.29

$118.24

View

Min.: 1
Mult.: 1

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

M85049/1913W04
Amphenol PCD
1: $80.91
61In Stock
225On Order

Mfr. Part No.
M85049/1913W04

Mouser Part No
523-85049/1913W04

Amphenol PCD

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

Learn More

Datasheet

61In Stock

225On Order

$80.91

$75.29

$71.45

$68.15

View

Min.: 1
Mult.: 1

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

M85049/1915W03
Amphenol PCD
1: $86.81
48In Stock
50Expected 6/10/2026

Mfr. Part No.
M85049/1915W03

Mouser Part No
523-85049/1915W03

Amphenol PCD

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

Learn More

Datasheet

48In Stock

50Expected 6/10/2026

$86.81

$74.65

$73.15

$71.13

View

Min.: 1
Mult.: 1

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

M85049/1915W04
Amphenol PCD
1: $92.81
110In Stock

Mfr. Part No.
M85049/1915W04

Mouser Part No
523-85049/1915W04

Amphenol PCD

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

Learn More

Datasheet

110In Stock

$92.81

$78.89

$73.94

$70.41

View

Min.: 1
Mult.: 1

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

M85049/1915W05
Amphenol PCD
1: $92.06
39In Stock
125Expected 11/11/2026

Mfr. Part No.
M85049/1915W05

Mouser Part No
523-85049/1915W05

Amphenol PCD

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

Learn More

Datasheet

39In Stock

125Expected 11/11/2026

$92.06

$81.03

$77.48

$72.32

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 19 Backshell Non Env-EMI/RFI

M85049/1917W06
Amphenol PCD
1: $101.17
60In Stock
75Expected 6/10/2026

Mfr. Part No.
M85049/1917W06

Mouser Part No
523-85049/1917W06

Amphenol PCD

Circular MIL Spec Backshells 19 Backshell Non Env-EMI/RFI

Learn More

Datasheet

60In Stock

75Expected 6/10/2026

$101.17

$86.01

$80.62

$80.61

$73.11

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST CAD SZ 21

M85049/1921W05
Amphenol PCD
1: $96.55
34In Stock

Mfr. Part No.
M85049/1921W05

Mouser Part No
523-85049/1921W05

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST CAD SZ 21

Learn More

Datasheet

34In Stock

$96.55

$85.82

$83.91

$83.22

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 19 Backshell Non Env-EMI/RFI

M85049/1921W08
Amphenol PCD
1: $104.33
33In Stock
25Expected 5/11/2026

Mfr. Part No.
M85049/1921W08

Mouser Part No
523-85049/1921W08

Amphenol PCD

Circular MIL Spec Backshells 19 Backshell Non Env-EMI/RFI

Learn More

Datasheet

33In Stock

25Expected 5/11/2026

$104.33

$90.21

$87.61

$80.51

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST CAD SZ 25

M85049/1925W06
Amphenol PCD
1: $113.29
25In Stock
25Expected 7/10/2026

Mfr. Part No.
M85049/1925W06

Mouser Part No
523-85049/1925W06

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST CAD SZ 25

Learn More

Datasheet

25In Stock

25Expected 7/10/2026

$113.29

$97.61

$95.51

$87.12

$82.97

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST CAD SZ 25

M85049/1925W07
Amphenol PCD
1: $176.27
26In Stock

Mfr. Part No.
M85049/1925W07

Mouser Part No
523-85049/1925W07

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST CAD SZ 25

Learn More

Datasheet

26In Stock

$176.27

$151.35

$148.66

$140.69

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST CAD SZ 25

M85049/1925W10
Amphenol PCD
1: $123.43
40In Stock

Mfr. Part No.
M85049/1925W10

Mouser Part No
523-85049/1925W10

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST CAD SZ 25

Learn More

Datasheet

40In Stock

$123.43

$104.94

$104.92

$93.66

$89.20

Min.: 1
Mult.: 1

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

M85049/25-24W
Amphenol PCD
1: $126.19
25In Stock

Mfr. Part No.
M85049/25-24W

Mouser Part No
523-85049/25-24W

Amphenol PCD

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

Learn More

Datasheet

25In Stock

$126.19

$126.18

$124.17

View

Min.: 1
Mult.: 1

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

M85049/25-35W
Amphenol PCD
1: $161.36
19In Stock

Mfr. Part No.
M85049/25-35W

Mouser Part No
523-85049/25-35W

Amphenol PCD

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

Learn More

Datasheet

19In Stock

$161.36

$147.15

$143.82

$141.39

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST CAD SZ 14

M85049/31-14W
Amphenol PCD
1: $17.19
567In Stock
400Expected 27/10/2026

Mfr. Part No.
M85049/31-14W

Mouser Part No
523-85049/31-14W

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST CAD SZ 14

Learn More

Datasheet

567In Stock

400Expected 27/10/2026

$17.19

$16.03

$14.58

$14.52

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 36 Backshell Non Env-EMI/RFI

M85049/3618W07
Amphenol PCD
1: $97.05
36In Stock

Mfr. Part No.
M85049/3618W07

Mouser Part No
523-85049/3618W07

Amphenol PCD

Circular MIL Spec Backshells 36 Backshell Non Env-EMI/RFI

Learn More

Datasheet

36In Stock

$97.05

$86.28

$86.02

$84.32

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG OD CAD

M85049/6-26W
Amphenol PCD
1: $206.82
17In Stock

Mfr. Part No.
M85049/6-26W

Mouser Part No
523-85049/6-26W

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI 45 DEG OD CAD

Learn More

Datasheet

17In Stock

$206.82

$189.82

$185.52

View

Min.: 1
Mult.: 1

Backshells

Types of Connectors

Customer Service Office

Company

Resources

Support