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 BACKSHELL NON ENV ST OD CAD SZ 17

M85049/2117W03B
Amphenol PCD
1: $72.25
4In Stock

Mfr. Part No.
M85049/2117W03B

Mouser Part No
523-85049/2117W03B

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST OD CAD SZ 17

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Datasheet

4In Stock

$72.25

$57.23

$57.00

$56.81

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells 21 Backshell Non Env

M85049/2117W05
Amphenol PCD
1: $71.56
22In Stock

Mfr. Part No.
M85049/2117W05

Mouser Part No
523-85049/2117W05

Amphenol PCD

Circular MIL Spec Backshells 21 Backshell Non Env

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Datasheet

22In Stock

$71.56

$60.83

$57.00

$54.29

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST OD CAD SZ 17

M85049/2117W06
Amphenol PCD
1: $74.35
25In Stock

Mfr. Part No.
M85049/2117W06

Mouser Part No
523-85049/2117W06

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST OD CAD SZ 17

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Datasheet

25In Stock

$74.35

$66.65

$66.64

$64.68

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST OD CAD SZ 19

M85049/2119W07
Amphenol PCD
1: $76.56
9In Stock

Mfr. Part No.
M85049/2119W07

Mouser Part No
523-85049/2119W07

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST OD CAD SZ 19

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Datasheet

9In Stock

$76.56

$64.95

$64.94

$61.66

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST OD CAD SZ 21

M85049/2121W05
Amphenol PCD
1: $73.32
29In Stock

Mfr. Part No.
M85049/2121W05

Mouser Part No
523-85049/2121W05

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST OD CAD SZ 21

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Datasheet

29In Stock

$73.32

$62.33

$58.41

$55.63

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Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST OD CAD SZ 21

M85049/2121W06
Amphenol PCD
1: $81.40
6In Stock
25Expected 5/3/2026

Mfr. Part No.
M85049/2121W06

Mouser Part No
523-85049/2121W06

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST OD CAD SZ 21

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Datasheet

6In Stock

25Expected 5/3/2026

$81.40

$71.52

$60.77

$56.74

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells 21 Backshell Non Env

M85049/2121W08
Amphenol PCD
1: $76.77
7In Stock

Mfr. Part No.
M85049/2121W08

Mouser Part No
523-85049/2121W08

Amphenol PCD

Circular MIL Spec Backshells 21 Backshell Non Env

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Datasheet

7In Stock

$76.77

$66.57

$64.01

$61.87

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST OD CAD SZ 23

M85049/2123W03
Amphenol PCD
1: $80.52
16In Stock

Mfr. Part No.
M85049/2123W03

Mouser Part No
523-85049/2123W03

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST OD CAD SZ 23

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Datasheet

16In Stock

$80.52

$70.39

$69.03

$67.89

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Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST OD CAD SZ 23

M85049/2123W09
Amphenol PCD
1: $87.11
13In Stock

Mfr. Part No.
M85049/2123W09

Mouser Part No
523-85049/2123W09

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST OD CAD SZ 23

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Datasheet

13In Stock

$87.11

$75.55

$68.60

$66.43

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL NON ENV ST OD CAD SZ 09

M85049/219W02
Amphenol PCD
1: $65.41
19In Stock

Mfr. Part No.
M85049/219W02

Mouser Part No
523-85049/219W02

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL NON ENV ST OD CAD SZ 09

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Datasheet

19In Stock

$65.41

$57.57

$50.23

$49.19

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Min.: 1
Mult.: 1

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

M85049/23-20W
Amphenol PCD
1: $79.77
12In Stock

Mfr. Part No.
M85049/23-20W

Mouser Part No
523-85049/23-20W

Amphenol PCD

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

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Datasheet

12In Stock

$79.77

$79.54

$74.82

$70.47

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells 24 Backshell Non Env-EMI/RFI

M85049/24-10W
Amphenol PCD
1: $63.90
4In Stock

Mfr. Part No.
M85049/24-10W

Mouser Part No
523-85049/24-10W

Amphenol PCD

Circular MIL Spec Backshells 24 Backshell Non Env-EMI/RFI

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Datasheet

4In Stock

$63.90

$54.32

$50.90

$48.48

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Min.: 1
Mult.: 1

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

M85049/24-11W
Amphenol PCD
1: $74.11
21In Stock

Mfr. Part No.
M85049/24-11W

Mouser Part No
523-85049/24-11W

Amphenol PCD

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

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Datasheet

21In Stock

$74.11

$65.77

$54.15

$53.25

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Min.: 1
Mult.: 1

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

M85049/24-15W
Amphenol PCD
1: $77.17
19In Stock

Mfr. Part No.
M85049/24-15W

Mouser Part No
523-85049/24-15W

Amphenol PCD

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

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Datasheet

19In Stock

$77.17

$67.65

$63.30

$55.52

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Min.: 1
Mult.: 1

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

M85049/24-17W
Amphenol PCD
1: $75.16
10In Stock

Mfr. Part No.
M85049/24-17W

Mouser Part No
523-85049/24-17W

Amphenol PCD

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

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Datasheet

10In Stock

$75.16

$64.18

$61.72

$59.64

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Min.: 1
Mult.: 1

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

M85049/24-42W
Amphenol PCD
1: $68.05
25In Stock

Mfr. Part No.
M85049/24-42W

Mouser Part No
523-85049/24-42W

Amphenol PCD

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

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Datasheet

25In Stock

$68.05

$58.12

$55.88

$54.02

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Min.: 1
Mult.: 1

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

M85049/24-54W
Amphenol PCD
1: $70.35
5In Stock

Mfr. Part No.
M85049/24-54W

Mouser Part No
523-85049/24-54W

Amphenol PCD

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

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Datasheet

5In Stock

$70.35

$63.86

$63.84

$58.82

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Min.: 1
Mult.: 1

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

M85049/24-56W
Amphenol PCD
1: $75.17
6In Stock

Mfr. Part No.
M85049/24-56W

Mouser Part No
523-85049/24-56W

Amphenol PCD

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

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Datasheet

6In Stock

$75.17

$64.19

$59.12

$59.08

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Min.: 1
Mult.: 1

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

M85049/24-7W
Amphenol PCD
1: $77.58
37In Stock

Mfr. Part No.
M85049/24-7W

Mouser Part No
523-85049/24-7W

Amphenol PCD

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

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Datasheet

37In Stock

$77.58

$64.27

$61.09

$51.53

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Min.: 1
Mult.: 1

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

M85049/25-11W
Amphenol PCD
1: $153.94
1In Stock

Mfr. Part No.
M85049/25-11W

Mouser Part No
523-85049/25-11W

Amphenol PCD

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

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Datasheet

1In Stock

$153.94

$139.08

$120.29

$113.31

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Min.: 1
Mult.: 1

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

M85049/25-21W
Amphenol PCD
1: $119.50
3In Stock
25Expected 5/3/2026

Mfr. Part No.
M85049/25-21W

Mouser Part No
523-85049/25-21W

Amphenol PCD

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

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Datasheet

3In Stock

25Expected 5/3/2026

$119.50

$108.20

$94.98

$87.99

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Min.: 1
Mult.: 1

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

M85049/25-25W
Amphenol PCD
1: $122.19
3In Stock
25Expected 18/5/2026

Mfr. Part No.
M85049/25-25W

Mouser Part No
523-85049/25-25W

Amphenol PCD

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

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Datasheet

3In Stock

25Expected 18/5/2026

$122.19

$109.14

$95.24

$90.45

View

Min.: 1
Mult.: 1

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

M85049/25-39W
Amphenol PCD
1: $139.75
9In Stock

Mfr. Part No.
M85049/25-39W

Mouser Part No
523-85049/25-39W

Amphenol PCD

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

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Datasheet

9In Stock

$139.75

$115.76

$101.98

$96.94

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Min.: 1
Mult.: 1

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

M85049/25-47W
Amphenol PCD
1: $129.85
12In Stock

Mfr. Part No.
M85049/25-47W

Mouser Part No
523-85049/25-47W

Amphenol PCD

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

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Datasheet

12In Stock

$129.85

$125.64

$125.63

$123.08

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST CAD SZ 10

M85049/27-10W
Amphenol PCD
1: $21.25
15In Stock

Mfr. Part No.
M85049/27-10W

Mouser Part No
523-85049/27-10W

Amphenol PCD

Circular MIL Spec Backshells BACKSHELL GRMT NUT ST CAD SZ 10

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Datasheet

15In Stock

$21.25

$19.27

$18.57

$15.73

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Min.: 1
Mult.: 1

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