Connectors – Mouser Canada

.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: 11,098

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 17 Backshell Env-EMI/RFI

M85049/1710N03
Amphenol PCD
1: $106.79
13In Stock

Mfr. Part #
M85049/1710N03

Mouser Part #
523-85049/1710N03

Amphenol PCD

Circular MIL Spec Backshells 17 Backshell Env-EMI/RFI

Learn More

Datasheet

13In Stock

$106.79

$94.20

$87.26

$78.78

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 12

M85049/1712N02
Amphenol PCD
1: $103.11
16In Stock

Mfr. Part #
M85049/1712N02

Mouser Part #
523-85049/1712N02

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 12

Learn More

Datasheet

16In Stock

$103.11

$93.47

$82.28

$76.06

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 12

M85049/1712N04
Amphenol PCD
1: $98.45
13In Stock

Mfr. Part #
M85049/1712N04

Mouser Part #
523-85049/1712N04

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL ENV EMI/ RFI ST NIC SZ 12

Learn More

Datasheet

13In Stock

$98.45

$86.57

$83.24

$80.46

$76.01

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 17 Backshell Env-EMI/RFI

M85049/1714N04A
Amphenol PCD
1: $115.92
3In Stock

Mfr. Part #
M85049/1714N04A

Mouser Part #
523-85049/1714N04A

Amphenol PCD

Circular MIL Spec Backshells 17 Backshell Env-EMI/RFI

Learn More

Datasheet

3In Stock

$115.92

$102.89

$100.91

$99.25

View

Min.: 1
Mult.: 1

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

M85049/1716N05
Amphenol PCD
1: $108.68
14In Stock

Mfr. Part #
M85049/1716N05

Mouser Part #
523-85049/1716N05

Amphenol PCD

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

Learn More

Datasheet

14In Stock

$108.68

$100.22

$87.59

$83.92

View

Min.: 1
Mult.: 1

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

M85049/1716N06
Amphenol PCD
1: $110.73
1In Stock
24Expected 2026-03-09

Mfr. Part #
M85049/1716N06

Mouser Part #
523-85049/1716N06

Amphenol PCD

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

Learn More

Datasheet

1In Stock

24Expected 2026-03-09

$110.73

$101.17

$85.98

$83.92

Quote

Min.: 1
Mult.: 1

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

M85049/1811N01
Amphenol PCD
1: $90.87
23In Stock

Mfr. Part #
M85049/1811N01

Mouser Part #
523-85049/1811N01

Amphenol PCD

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

Learn More

Datasheet

23In Stock

$90.87

$78.81

$71.59

$70.56

View

Min.: 1
Mult.: 1

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

M85049/1813N02
Amphenol PCD
1: $83.27
29In Stock

Mfr. Part #
M85049/1813N02

Mouser Part #
523-85049/1813N02

Amphenol PCD

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

Learn More

Datasheet

29In Stock

$83.27

$74.82

$71.48

$70.18

View

Min.: 1
Mult.: 1

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

M85049/1817N02
Amphenol PCD
1: $99.47
5In Stock

Mfr. Part #
M85049/1817N02

Mouser Part #
523-85049/1817N02

Amphenol PCD

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

Learn More

Datasheet

5In Stock

$99.47

$92.12

$79.93

$76.81

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

M85049/1817N03
Amphenol PCD
1: $82.87
22In Stock

Mfr. Part #
M85049/1817N03

Mouser Part #
523-85049/1817N03

Amphenol PCD

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

Learn More

Datasheet

22In Stock

$82.87

$77.64

$74.26

$70.79

View

Min.: 1
Mult.: 1

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

M85049/1819N04
Amphenol PCD
1: $105.01
9In Stock

Mfr. Part #
M85049/1819N04

Mouser Part #
523-85049/1819N04

Amphenol PCD

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

Learn More

Datasheet

9In Stock

$105.01

$92.33

$88.77

$85.81

$81.08

Min.: 1
Mult.: 1

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

M85049/1819N05B
Amphenol PCD
1: $110.27
21In Stock

Mfr. Part #
M85049/1819N05B

Mouser Part #
523-85049/1819N05B

Amphenol PCD

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

Learn More

Datasheet

21In Stock

$110.27

$102.69

$89.92

$86.08

View

Min.: 1
Mult.: 1

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

M85049/1819N06
Amphenol PCD
1: $109.26
24In Stock

Mfr. Part #
M85049/1819N06

Mouser Part #
523-85049/1819N06

Amphenol PCD

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

Learn More

Datasheet

24In Stock

$109.26

$100.73

$87.19

$85.27

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

M85049/1819N07
Amphenol PCD
1: $111.99
22In Stock

Mfr. Part #
M85049/1819N07

Mouser Part #
523-85049/1819N07

Amphenol PCD

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

Learn More

Datasheet

22In Stock

$111.99

$105.30

$92.24

$86.50

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

M85049/1821N04
Amphenol PCD
1: $112.15
4In Stock

Mfr. Part #
M85049/1821N04

Mouser Part #
523-85049/1821N04

Amphenol PCD

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

Learn More

Datasheet

4In Stock

$112.15

$101.60

$87.16

$85.75

View

Min.: 1
Mult.: 1

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

M85049/1821N06
Amphenol PCD
1: $107.28
12In Stock

Mfr. Part #
M85049/1821N06

Mouser Part #
523-85049/1821N06

Amphenol PCD

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

Learn More

Datasheet

12In Stock

$107.28

$99.50

$91.85

$82.40

View

Min.: 1
Mult.: 1

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

M85049/1823N03
Amphenol PCD
1: $107.57
10In Stock
50On Order

Mfr. Part #
M85049/1823N03

Mouser Part #
523-85049/1823N03

Amphenol PCD

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

Learn More

Datasheet

10In Stock

50On Order

$107.57

$95.85

$86.77

$82.94

View

Min.: 1
Mult.: 1

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

M85049/1823N08
Amphenol PCD
1: $123.54
19In Stock

Mfr. Part #
M85049/1823N08

Mouser Part #
523-85049/1823N08

Amphenol PCD

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

Learn More

Datasheet

19In Stock

$123.54

$113.62

$103.14

$97.58

View

Min.: 1
Mult.: 1

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

M85049/1825N07A
Amphenol PCD
1: $130.03
6In Stock

Mfr. Part #
M85049/1825N07A

Mouser Part #
523-85049/1825N07A

Amphenol PCD

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

Learn More

Datasheet

6In Stock

$130.03

$121.62

$107.83

$102.72

View

Min.: 1
Mult.: 1

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

M85049/1825N09
Amphenol PCD
1: $132.62
10In Stock

Mfr. Part #
M85049/1825N09

Mouser Part #
523-85049/1825N09

Amphenol PCD

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

Learn More

Datasheet

10In Stock

$132.62

$121.80

$110.87

$110.86

View

Min.: 1
Mult.: 1

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

M85049/1911N03
Amphenol PCD
1: $86.73
12In Stock
175On Order

Mfr. Part #
M85049/1911N03

Mouser Part #
523-85049/1911N03

Amphenol PCD

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

Learn More

Datasheet

12In Stock

175On Order

$86.73

$75.20

$72.31

$69.90

View

Min.: 1
Mult.: 1

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

M85049/1913N03
Amphenol PCD
1: $88.69
31In Stock

Mfr. Part #
M85049/1913N03

Mouser Part #
523-85049/1913N03

Amphenol PCD

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

Learn More

Datasheet

31In Stock

$88.69

$75.38

$65.61

$64.02

View

Min.: 1
Mult.: 1

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

M85049/1915N04
Amphenol PCD
1: $83.87
24In Stock

Mfr. Part #
M85049/1915N04

Mouser Part #
523-85049/1915N04

Amphenol PCD

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

Learn More

Datasheet

24In Stock

$83.87

$79.33

$67.97

$67.95

View

Min.: 1
Mult.: 1

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

M85049/1917N03
Amphenol PCD
1: $93.70
25In Stock
25Expected 2026-05-11

Mfr. Part #
M85049/1917N03

Mouser Part #
523-85049/1917N03

Amphenol PCD

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

Learn More

Datasheet

25In Stock

25Expected 2026-05-11

$93.70

$83.75

$74.91

$71.35

View

Min.: 1
Mult.: 1

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

M85049/1917N06
Amphenol PCD
1: $81.80
17In Stock
25Expected 2026-03-09

Mfr. Part #
M85049/1917N06

Mouser Part #
523-85049/1917N06

Amphenol PCD

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

Learn More

Datasheet

17In Stock

25Expected 2026-03-09

$81.80

$73.17

$68.78

$66.16

View

Min.: 1
Mult.: 1

Backshells

Types of Connectors

Mouser Electronics®

Company

Resources

Support