Connectors – Mouser Canada

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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 NON ENV ST NIC SZ 19

M85049/2119N07
Amphenol PCD
1: $76.35
8In Stock

Mfr. Part #
M85049/2119N07

Mouser Part #
523-85049/2119N07

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 19

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Datasheet

8In Stock

$76.35

$64.90

$60.83

$57.93

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 21

M85049/2121A08
Amphenol PCD
1: $81.34
13In Stock

Mfr. Part #
M85049/2121A08

Mouser Part #
523-85049/2121A08

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 21

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Datasheet

13In Stock

$81.34

$69.46

$64.07

$59.87

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 21

M85049/2121N03
Amphenol PCD
1: $71.67
21In Stock

Mfr. Part #
M85049/2121N03

Mouser Part #
523-85049/2121N03

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 21

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Datasheet

21In Stock

$71.67

$66.28

$56.32

$55.77

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 23

M85049/2123N05
Amphenol PCD
1: $78.88
8In Stock

Mfr. Part #
M85049/2123N05

Mouser Part #
523-85049/2123N05

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 23

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Datasheet

8In Stock

$78.88

$67.36

$62.31

$58.50

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 23

M85049/2123N08A
Amphenol PCD
1: $97.33
10In Stock

Mfr. Part #
M85049/2123N08A

Mouser Part #
523-85049/2123N08A

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 23

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Datasheet

10In Stock

$97.33

$86.01

$80.03

$72.31

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 25

M85049/2125A06A
Amphenol PCD
1: $84.78
15In Stock

Mfr. Part #
M85049/2125A06A

Mouser Part #
523-85049/2125A06A

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 25

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Datasheet

15In Stock

$84.78

$73.51

$70.69

$68.32

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 25

M85049/2125A07
Amphenol PCD
1: $84.78
4In Stock
25Expected 2026-03-04

Mfr. Part #
M85049/2125A07

Mouser Part #
523-85049/2125A07

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 25

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Datasheet

4In Stock

25Expected 2026-03-04

$84.78

$73.51

$70.69

$68.32

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 25

M85049/2125A10
Amphenol PCD
1: $92.55
20In Stock

Mfr. Part #
M85049/2125A10

Mouser Part #
523-85049/2125A10

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST BLACK SZ 25

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Datasheet

20In Stock

$92.55

$91.36

$91.35

$85.58

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 25

M85049/2125N05
Amphenol PCD
1: $81.05
1In Stock
25Expected 2026-05-18

Mfr. Part #
M85049/2125N05

Mouser Part #
523-85049/2125N05

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 25

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Datasheet

1In Stock

25Expected 2026-05-18

$81.05

$69.21

$66.54

$64.32

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 25

M85049/2125N06A
Amphenol PCD
1: $84.78
16In Stock

Mfr. Part #
M85049/2125N06A

Mouser Part #
523-85049/2125N06A

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 25

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Datasheet

16In Stock

$84.78

$73.51

$70.69

$68.32

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 25

M85049/2125N08A
Amphenol PCD
1: $89.84
13In Stock

Mfr. Part #
M85049/2125N08A

Mouser Part #
523-85049/2125N08A

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 25

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Datasheet

13In Stock

$89.84

$77.90

$71.16

$69.03

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 25

M85049/2125N10
Amphenol PCD
1: $91.78
19In Stock

Mfr. Part #
M85049/2125N10

Mouser Part #
523-85049/2125N10

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 25

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Datasheet

19In Stock

$91.78

$78.01

$73.13

$69.63

$66.31

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 25

M85049/2125N10A
Amphenol PCD
1: $91.73
28In Stock

Mfr. Part #
M85049/2125N10A

Mouser Part #
523-85049/2125N10A

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 25

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Datasheet

28In Stock

$91.73

$84.21

$72.45

$69.84

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells 21 Backshell Non Env

M85049/219N01
Amphenol PCD
1: $66.10
8In Stock
25Expected 2026-04-30

Mfr. Part #
M85049/219N01

Mouser Part #
523-85049/219N01

Amphenol PCD

Circular MIL Spec Backshells 21 Backshell Non Env

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Datasheet

8In Stock

25Expected 2026-04-30

$66.10

$58.44

$55.31

$51.22

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells 21 Backshell Non Env

M85049/219N02
Amphenol PCD
1: $61.88
22In Stock

Mfr. Part #
M85049/219N02

Mouser Part #
523-85049/219N02

Amphenol PCD

Circular MIL Spec Backshells 21 Backshell Non Env

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Datasheet

22In Stock

$61.88

$52.60

$49.30

$46.94

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI 45 DEG NIC

M85049/23-7N
Amphenol PCD
1: $60.06
17In Stock

Mfr. Part #
M85049/23-7N

Mouser Part #
523-85049/23-7N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI 45 DEG NIC

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Datasheet

17In Stock

$60.06

$58.97

$53.30

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI R/A NIC

M85049/24-17N
Amphenol PCD
1: $75.46
2In Stock

Mfr. Part #
M85049/24-17N

Mouser Part #
523-85049/24-17N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI R/A NIC

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Datasheet

2In Stock

$75.46

$64.44

$61.97

$59.90

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI R/A NIC

M85049/24-19N
Amphenol PCD
1: $77.39
1In Stock
25Expected 2026-05-11

Mfr. Part #
M85049/24-19N

Mouser Part #
523-85049/24-19N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI R/A NIC

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Datasheet

1In Stock

25Expected 2026-05-11

$77.39

$66.08

$63.55

$61.43

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI R/A NIC

M85049/24-6N
Amphenol PCD
1: $62.80
7In Stock

Mfr. Part #
M85049/24-6N

Mouser Part #
523-85049/24-6N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI R/A NIC

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Datasheet

7In Stock

$62.80

$53.39

$50.03

$47.65

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NICKEL

M85049/25-116N
Amphenol PCD
1: $101.25
4In Stock
75On Order

Mfr. Part #
M85049/25-116N

Mouser Part #
523-85049/25-116N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NICKEL

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Datasheet

4In Stock

75On Order

$101.25

$94.40

$94.39

$92.62

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NICKEL

M85049/25-11N
Amphenol PCD
1: $134.99
17In Stock

Mfr. Part #
M85049/25-11N

Mouser Part #
523-85049/25-11N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NICKEL

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Datasheet

17In Stock

$134.99

$123.09

$118.35

$114.40

$108.09

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NICKEL

M85049/25-13N
Amphenol PCD
1: $100.36
5In Stock
25Expected 2026-03-23

Mfr. Part #
M85049/25-13N

Mouser Part #
523-85049/25-13N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NICKEL

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Datasheet

5In Stock

25Expected 2026-03-23

$100.36

$81.78

$78.76

$77.18

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NICKEL

M85049/25-17N
Amphenol PCD
1: $115.72
14In Stock

Mfr. Part #
M85049/25-17N

Mouser Part #
523-85049/25-17N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NICKEL

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Datasheet

14In Stock

$115.72

$104.21

$87.94

$83.57

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NICKEL

M85049/25-18N
Amphenol PCD
1: $97.35
12In Stock

Mfr. Part #
M85049/25-18N

Mouser Part #
523-85049/25-18N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NICKEL

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Datasheet

12In Stock

$97.35

$88.88

$75.66

$74.20

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NICKEL

M85049/25-23N
Amphenol PCD
1: $151.77
12In Stock

Mfr. Part #
M85049/25-23N

Mouser Part #
523-85049/25-23N

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV EMI/RFI ST NICKEL

Learn More

Datasheet

12In Stock

$151.77

$129.02

$120.93

$115.17

$110.37

Min.: 1
Mult.: 1

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