Connectors – Mouser Singapore

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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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Part #

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

M85049/1815W05A
Amphenol PCD
1: $122.49
14In Stock
25Expected 30/4/2026

Mfr. Part No.
M85049/1815W05A

Mouser Part No
523-85049/1815W05A

Amphenol PCD

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

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Datasheet

14In Stock

25Expected 30/4/2026

$122.49

$94.73

$91.25

$87.54

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Min.: 1
Mult.: 1

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

M85049/1817W03A
Amphenol PCD
1: $119.04
3In Stock

Mfr. Part No.
M85049/1817W03A

Mouser Part No
523-85049/1817W03A

Amphenol PCD

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

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Datasheet

3In Stock

$119.04

$108.23

$95.70

$83.50

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Min.: 1
Mult.: 1

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

M85049/1817W04
Amphenol PCD
1: $88.07
23In Stock
100Expected 12/5/2026

Mfr. Part No.
M85049/1817W04

Mouser Part No
523-85049/1817W04

Amphenol PCD

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

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Datasheet

23In Stock

100Expected 12/5/2026

$88.07

$80.13

$75.00

$74.91

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Min.: 1
Mult.: 1

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

M85049/1817W04A
Amphenol PCD
1: $123.10
10In Stock

Mfr. Part No.
M85049/1817W04A

Mouser Part No
523-85049/1817W04A

Amphenol PCD

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

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Datasheet

10In Stock

$123.10

$111.51

$98.93

$90.41

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Min.: 1
Mult.: 1

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

M85049/1817W06A
Amphenol PCD
1: $114.51
13In Stock

Mfr. Part No.
M85049/1817W06A

Mouser Part No
523-85049/1817W06A

Amphenol PCD

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

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Datasheet

13In Stock

$114.51

$106.32

$104.75

$91.80

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Min.: 1
Mult.: 1

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

M85049/1819W03
Amphenol PCD
1: $95.22
20In Stock

Mfr. Part No.
M85049/1819W03

Mouser Part No
523-85049/1819W03

Amphenol PCD

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

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Datasheet

20In Stock

$95.22

$84.44

$80.73

$76.88

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Min.: 1
Mult.: 1

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

M85049/1819W04
Amphenol PCD
1: $126.06
7In Stock
25Expected 17/4/2026

Mfr. Part No.
M85049/1819W04

Mouser Part No
523-85049/1819W04

Amphenol PCD

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

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Datasheet

7In Stock

25Expected 17/4/2026

$126.06

$100.89

$95.28

$84.93

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Min.: 1
Mult.: 1

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

M85049/1819W06A
Amphenol PCD
1: $105.63
7In Stock

Mfr. Part No.
M85049/1819W06A

Mouser Part No
523-85049/1819W06A

Amphenol PCD

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

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Datasheet

7In Stock

$105.63

$98.11

$86.28

$82.45

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Min.: 1
Mult.: 1

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

M85049/1821W04
Amphenol PCD
1: $106.43
16In Stock
25Expected 4/3/2026

Mfr. Part No.
M85049/1821W04

Mouser Part No
523-85049/1821W04

Amphenol PCD

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

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Datasheet

16In Stock

25Expected 4/3/2026

$106.43

$90.48

$84.80

$80.76

$76.91

Min.: 1
Mult.: 1

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

M85049/1821W07A
Amphenol PCD
1: $114.66
10In Stock

Mfr. Part No.
M85049/1821W07A

Mouser Part No
523-85049/1821W07A

Amphenol PCD

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

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Datasheet

10In Stock

$114.66

$103.14

$102.17

$100.51

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Min.: 1
Mult.: 1

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

M85049/1821W08B
Amphenol PCD
1: $119.29
6In Stock
25Expected 18/5/2026

Mfr. Part No.
M85049/1821W08B

Mouser Part No
523-85049/1821W08B

Amphenol PCD

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

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Datasheet

6In Stock

25Expected 18/5/2026

$119.29

$107.31

$103.18

$99.73

$94.23

Min.: 1
Mult.: 1

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

M85049/1823W06
Amphenol PCD
1: $158.67
20In Stock
25Expected 4/3/2026

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

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Datasheet

20In Stock

25Expected 4/3/2026

$158.67

$146.81

$98.22

$91.87

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Min.: 1
Mult.: 1

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

M85049/1823W09
Amphenol PCD
1: $123.85
1In Stock
11Expected 23/3/2026

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

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Datasheet

1In Stock

11Expected 23/3/2026

$123.85

$112.95

$108.59

$104.47

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Min.: 1
Mult.: 1

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

M85049/1825W04
Amphenol PCD
1: $137.99
13In Stock
25Expected 6/4/2026

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

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Datasheet

13In Stock

25Expected 6/4/2026

$137.99

$126.09

$111.21

$100.57

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

M85049/1825W09A
Amphenol PCD
1: $154.53
11In Stock

Mfr. Part No.
M85049/1825W09A

Mouser Part No
523-85049/1825W09A

Amphenol PCD

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

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Datasheet

11In Stock

$154.53

$142.07

$117.54

$106.20

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Min.: 1
Mult.: 1

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

M85049/1913W02
Amphenol PCD
1: $95.65
16In Stock

Mfr. Part No.
M85049/1913W02

Mouser Part No
523-85049/1913W02

Amphenol PCD

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

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Datasheet

16In Stock

$95.65

$85.51

$76.95

$70.99

View

Min.: 1
Mult.: 1

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

M85049/1913W03
Amphenol PCD
1: $71.75
2In Stock
25On Order

Mfr. Part No.
M85049/1913W03

Mouser Part No
523-85049/1913W03

Amphenol PCD

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

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Datasheet

2In Stock

25On Order

$71.75

$68.90

$63.86

$60.19

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Min.: 1
Mult.: 1

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

M85049/1915W03
Amphenol PCD
1: $81.68
20In Stock

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

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Datasheet

20In Stock

$81.68

$81.01

$74.38

$69.07

View

Min.: 1
Mult.: 1

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

M85049/1915W04
Amphenol PCD
1: $88.22
13In Stock
25Expected 16/3/2026

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

13In Stock

25Expected 16/3/2026

$88.22

$77.52

$72.67

$69.19

$65.90

Min.: 1
Mult.: 1

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

M85049/1917W02
Amphenol PCD
1: $84.61
4In Stock

Mfr. Part No.
M85049/1917W02

Mouser Part No
523-85049/1917W02

Amphenol PCD

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

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Datasheet

4In Stock

$84.61

$80.11

$80.09

$73.82

View

Min.: 1
Mult.: 1

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

M85049/1917W04
Amphenol PCD
1: $113.23
1In Stock
50On Order

Mfr. Part No.
M85049/1917W04

Mouser Part No
523-85049/1917W04

Amphenol PCD

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

Learn More

Datasheet

1In Stock

50On Order

$113.23

$104.78

$88.08

$76.23

View

Min.: 1
Mult.: 1

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

M85049/1919W04
Amphenol PCD
1: $94.45
15In Stock

Mfr. Part No.
M85049/1919W04

Mouser Part No
523-85049/1919W04

Amphenol PCD

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

Learn More

Datasheet

15In Stock

$94.45

$83.64

$83.62

$82.40

View

Min.: 1
Mult.: 1

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

M85049/1919W06
Amphenol PCD
1: $98.23
18In Stock

Mfr. Part No.
M85049/1919W06

Mouser Part No
523-85049/1919W06

Amphenol PCD

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

Learn More

Datasheet

18In Stock

$98.23

$86.37

$77.33

Quote

Min.: 1
Mult.: 1

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

M85049/1919W07
Amphenol PCD
1: $115.73
7In Stock
25Expected 9/3/2026

Mfr. Part No.
M85049/1919W07

Mouser Part No
523-85049/1919W07

Amphenol PCD

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

Learn More

Datasheet

7In Stock

25Expected 9/3/2026

$115.73

$103.58

$88.03

$77.76

View

Min.: 1
Mult.: 1

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

M85049/1921W05
Amphenol PCD
1: $98.73
5In Stock
25Expected 9/3/2026

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

5In Stock

25Expected 9/3/2026

$98.73

$92.74

$92.73

$92.31

View

Min.: 1
Mult.: 1

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