Connectors – Mouser Puerto Rico

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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 BACKSHELL ENV EMI/ RFI ST NIC SZ 25

M85049/1825N08
Amphenol PCD
1: $85.72
77In Stock
75Expected 10/6/2026

Mfr. Part #
M85049/1825N08

Mouser Part #
523-85049/1825N08

Amphenol PCD

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

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Datasheet

77In Stock

75Expected 10/6/2026

$85.72

$76.52

$76.51

$75.97

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Min.: 1
Mult.: 1

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

M85049/1825N08B
Amphenol PCD
1: $86.91
21In Stock

Mfr. Part #
M85049/1825N08B

Mouser Part #
523-85049/1825N08B

Amphenol PCD

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

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Datasheet

21In Stock

$86.91

$79.26

$77.46

$71.66

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Min.: 1
Mult.: 1

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

M85049/1825N09
Amphenol PCD
1: $88.83
21In Stock

Mfr. Part #
M85049/1825N09

Mouser Part #
523-85049/1825N09

Amphenol PCD

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

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Datasheet

21In Stock

$88.83

$75.94

$71.17

$67.78

$64.57

Min.: 1
Mult.: 1

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

M85049/1911N02
Amphenol PCD
1: $57.04
51In Stock

Mfr. Part #
M85049/1911N02

Mouser Part #
523-85049/1911N02

Amphenol PCD

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

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Datasheet

51In Stock

$57.04

$48.49

$45.33

$43.27

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Min.: 1
Mult.: 1

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

M85049/1911N03
Amphenol PCD
1: $58.61
69In Stock
200On Order

Mfr. Part #
M85049/1911N03

Mouser Part #
523-85049/1911N03

Amphenol PCD

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

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Datasheet

69In Stock

200On Order

$58.61

$49.82

$46.70

$44.48

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Min.: 1
Mult.: 1

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

M85049/1913N02
Amphenol PCD
1: $55.09
150In Stock
125Expected 9/3/2026

Mfr. Part #
M85049/1913N02

Mouser Part #
523-85049/1913N02

Amphenol PCD

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

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Datasheet

150In Stock

125Expected 9/3/2026

$55.09

$46.83

$46.82

$46.36

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Min.: 1
Mult.: 1

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

M85049/1913N03
Amphenol PCD
1: $50.76
48In Stock
150On Order

Mfr. Part #
M85049/1913N03

Mouser Part #
523-85049/1913N03

Amphenol PCD

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

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Datasheet

48In Stock

150On Order

$50.76

$42.49

$42.48

$40.46

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Min.: 1
Mult.: 1

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

M85049/1913N04
Amphenol PCD
1: $58.76
120In Stock
75Expected 10/6/2026

Mfr. Part #
M85049/1913N04

Mouser Part #
523-85049/1913N04

Amphenol PCD

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

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Datasheet

120In Stock

75Expected 10/6/2026

$58.76

$50.13

$46.98

$44.74

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Min.: 1
Mult.: 1

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

M85049/1915N03
Amphenol PCD
1: $58.88
186In Stock

Mfr. Part #
M85049/1915N03

Mouser Part #
523-85049/1915N03

Amphenol PCD

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

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Datasheet

186In Stock

$58.88

$51.07

$50.91

$45.74

Quote

Min.: 1
Mult.: 1

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

M85049/1915N04
Amphenol PCD
1: $62.51
35In 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

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Datasheet

35In Stock

$62.51

$53.13

$49.80

$47.43

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Min.: 1
Mult.: 1

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

M85049/1917N05
Amphenol PCD
1: $61.03
213In Stock

Mfr. Part #
M85049/1917N05

Mouser Part #
523-85049/1917N05

Amphenol PCD

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

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Datasheet

213In Stock

$61.03

$54.01

$51.44

$48.99

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Min.: 1
Mult.: 1

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

M85049/1919N07
Amphenol PCD
1: $66.47
111In Stock
225Expected 11/25/2026

Mfr. Part #
M85049/1919N07

Mouser Part #
523-85049/1919N07

Amphenol PCD

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

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Datasheet

111In Stock

225Expected 11/25/2026

$66.47

$58.30

$58.29

$57.46

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Min.: 1
Mult.: 1

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

M85049/1921N05
Amphenol PCD
1: $67.74
33In Stock

Mfr. Part #
M85049/1921N05

Mouser Part #
523-85049/1921N05

Amphenol PCD

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

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Datasheet

33In Stock

$67.74

$65.50

$63.00

$51.40

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Min.: 1
Mult.: 1

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

M85049/1921N06
Amphenol PCD
1: $67.51
83In Stock

Mfr. Part #
M85049/1921N06

Mouser Part #
523-85049/1921N06

Amphenol PCD

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

Learn More

Datasheet

83In Stock

$67.51

$58.55

$58.38

$50.45

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Min.: 1
Mult.: 1

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

M85049/1921N08
Amphenol PCD
1: $85.58
64In Stock

Mfr. Part #
M85049/1921N08

Mouser Part #
523-85049/1921N08

Amphenol PCD

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

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Datasheet

64In Stock

$85.58

$60.75

$52.33

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Min.: 1
Mult.: 1

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

M85049/1923N06
Amphenol PCD
1: $72.61
122In Stock

Mfr. Part #
M85049/1923N06

Mouser Part #
523-85049/1923N06

Amphenol PCD

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

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Datasheet

122In Stock

$72.61

$62.96

$61.53

$58.50

Quote

Min.: 1
Mult.: 1

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

M85049/1925N04
Amphenol PCD
1: $71.82
102In Stock

Mfr. Part #
M85049/1925N04

Mouser Part #
523-85049/1925N04

Amphenol PCD

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

Learn More

Datasheet

102In Stock

$71.82

$63.85

$63.65

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Min.: 1
Mult.: 1

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

M85049/1925N06
Amphenol PCD
1: $74.70
37In Stock

Mfr. Part #
M85049/1925N06

Mouser Part #
523-85049/1925N06

Amphenol PCD

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

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Datasheet

37In Stock

$74.70

$66.41

$66.21

$63.68

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Min.: 1
Mult.: 1

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

M85049/1925N07A
Amphenol PCD
1: $77.73
27In Stock

Mfr. Part #
M85049/1925N07A

Mouser Part #
523-85049/1925N07A

Amphenol PCD

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

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Datasheet

27In Stock

$77.73

$67.60

$61.47

Min.: 1
Mult.: 1

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

M85049/1925N08
Amphenol PCD
1: $77.73
25In Stock
25Expected 10/22/2026

Mfr. Part #
M85049/1925N08

Mouser Part #
523-85049/1925N08

Amphenol PCD

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

Learn More

Datasheet

25In Stock

25Expected 10/22/2026

$77.73

$69.09

$66.42

$63.13

View

Min.: 1
Mult.: 1

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

M85049/1925N10
Amphenol PCD
1: $88.77
128In Stock
175Expected 10/8/2026

Mfr. Part #
M85049/1925N10

Mouser Part #
523-85049/1925N10

Amphenol PCD

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

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Datasheet

128In Stock

175Expected 10/8/2026

$88.77

$84.04

$79.88

$78.41

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 17

M85049/2117N04
Amphenol PCD
1: $46.79
51In Stock

Mfr. Part #
M85049/2117N04

Mouser Part #
523-85049/2117N04

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST NIC SZ 17

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Datasheet

51In Stock

$46.79

$40.68

$39.06

$35.62

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 21 Backshell Non Env

M85049/2117N06
Amphenol PCD
1: $46.44
59In Stock

Mfr. Part #
M85049/2117N06

Mouser Part #
523-85049/2117N06

Amphenol PCD

Circular MIL Spec Backshells 21 Backshell Non Env

Learn More

Datasheet

59In Stock

$46.44

$44.12

$41.43

$38.64

View

Min.: 1
Mult.: 1

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

M85049/25-116N
Amphenol PCD
1: $66.88
54In Stock

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

54In Stock

$66.88

$58.00

$57.83

$53.77

View

Min.: 1
Mult.: 1

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

M85049/25-130N
Amphenol PCD
1: $76.44
29In Stock

Mfr. Part #
M85049/25-130N

Mouser Part #
523-85049/25-130N

Amphenol PCD

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

Learn More

Datasheet

29In Stock

$76.44

$75.73

$75.72

$75.51

View

Min.: 1
Mult.: 1

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