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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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Results: 11,079

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RoHS Compliant

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Part #

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

M85049/1811N01
Amphenol PCD
1: ¥9,829.8
6In Stock
25Expected 11/2/2026

Mfr. Part #
M85049/1811N01

Mouser Part #
523-85049/1811N01

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

Datasheet

6In Stock

25Expected 11/2/2026

¥9,829.8

¥8,334.9

¥8,333.2

¥7,795.1

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

M85049/1817N03
Amphenol PCD
1: ¥9,004.3
25In Stock
25Expected 10/8/2026

Mfr. Part #
M85049/1817N03

Mouser Part #
523-85049/1817N03

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

Datasheet

25In Stock

25Expected 10/8/2026

¥9,004.3

¥8,308.3

¥8,248.5

¥8,138.9

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Min.: 1
Mult.: 1

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

M85049/1817N05A
Amphenol PCD
1: ¥11,982.5
21In Stock

Mfr. Part #
M85049/1817N05A

Mouser Part #
523-85049/1817N05A

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

Datasheet

21In Stock

¥11,982.5

¥10,652

¥10,409.5

Min.: 1
Mult.: 1

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

M85049/1817N06
Amphenol PCD
1: ¥12,449.2
17In Stock
125Expected 10/26/2026

Mfr. Part #
M85049/1817N06

Mouser Part #
523-85049/1817N06

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

Datasheet

17In Stock

125Expected 10/26/2026

¥12,449.2

¥10,582.2

¥9,919.5

¥9,447.8

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Min.: 1
Mult.: 1

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

M85049/1819N05B
Amphenol PCD
1: ¥11,932.6
21In Stock

Mfr. Part #
M85049/1819N05B

Mouser Part #
523-85049/1819N05B

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

Datasheet

21In Stock

¥11,932.6

¥10,607.1

¥10,366.3

¥9,892.9

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Min.: 1
Mult.: 1

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

M85049/1819N06
Amphenol PCD
1: ¥11,982.5
14In Stock
25Expected 10/15/2026

Mfr. Part #
M85049/1819N06

Mouser Part #
523-85049/1819N06

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

Datasheet

14In Stock

25Expected 10/15/2026

¥11,982.5

¥10,389.6

¥9,326.5

Min.: 1
Mult.: 1

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

M85049/1821N06
Amphenol PCD
1: ¥10,620.4
22In Stock

Mfr. Part #
M85049/1821N06

Mouser Part #
523-85049/1821N06

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

Datasheet

22In Stock

¥10,620.4

¥9,856.4

¥9,854.7

¥9,590.6

View

Min.: 1
Mult.: 1

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

M85049/1821N07
Amphenol PCD
1: ¥10,128.8
13In Stock

Mfr. Part #
M85049/1821N07

Mouser Part #
523-85049/1821N07

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

Datasheet

13In Stock

¥10,128.8

¥10,125.5

¥9,804.9

Min.: 1
Mult.: 1

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

M85049/1821N08
Amphenol PCD
1: ¥12,821.3
8In Stock
100On Order

Mfr. Part #
M85049/1821N08

Mouser Part #
523-85049/1821N08

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

Datasheet

8In Stock

100On Order

¥12,821.3

¥11,083.9

¥10,387.9

¥9,892.9

¥9,421.2

Min.: 1
Mult.: 1

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

M85049/1823N04
Amphenol PCD
1: ¥12,713.3
22In Stock

Mfr. Part #
M85049/1823N04

Mouser Part #
523-85049/1823N04

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

Datasheet

22In Stock

¥12,713.3

¥10,992.5

¥10,675.2

¥9,813.2

¥9,344.8

Min.: 1
Mult.: 1

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

M85049/1823N04A
Amphenol PCD
1: ¥12,748.2
25In Stock

Mfr. Part #
M85049/1823N04A

Mouser Part #
523-85049/1823N04A

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

Datasheet

25In Stock

¥12,748.2

¥11,333

¥10,093.9

Min.: 1
Mult.: 1

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

M85049/1823N05
Amphenol PCD
1: ¥12,962.4
6In Stock
50Expected 10/27/2026

Mfr. Part #
M85049/1823N05

Mouser Part #
523-85049/1823N05

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

Datasheet

6In Stock

50Expected 10/27/2026

¥12,962.4

¥11,198.5

¥10,497.5

¥9,995.9

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

M85049/1823N06
Amphenol PCD
1: ¥13,412.6
15In Stock

Mfr. Part #
M85049/1823N06

Mouser Part #
523-85049/1823N06

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

Datasheet

15In Stock

¥13,412.6

¥11,402.8

¥10,688.5

¥10,176.9

¥9,691.9

Min.: 1
Mult.: 1

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

M85049/1823N06B
Amphenol PCD
1: ¥13,528.8
13In Stock

Mfr. Part #
M85049/1823N06B

Mouser Part #
523-85049/1823N06B

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

Datasheet

13In Stock

¥13,528.8

¥12,025.6

¥11,753.2

¥11,459.2

View

Min.: 1
Mult.: 1

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

M85049/1823N07
Amphenol PCD
1: ¥13,550.4
12In Stock
25Expected 9/18/2026

Mfr. Part #
M85049/1823N07

Mouser Part #
523-85049/1823N07

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

Datasheet

12In Stock

25Expected 9/18/2026

¥13,550.4

¥11,607.1

¥10,884.5

¥10,364.6

¥9,871.3

Min.: 1
Mult.: 1

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

M85049/1823N08
Amphenol PCD
1: ¥13,528.8
19In Stock

Mfr. Part #
M85049/1823N08

Mouser Part #
523-85049/1823N08

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

Datasheet

19In Stock

¥13,528.8

¥12,025.6

¥11,753.2

¥11,185.2

View

Min.: 1
Mult.: 1

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

M85049/1825N04
Amphenol PCD
1: ¥13,548.8
13In Stock
25Expected 9/29/2026

Mfr. Part #
M85049/1825N04

Mouser Part #
523-85049/1825N04

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

Datasheet

13In Stock

25Expected 9/29/2026

¥13,548.8

¥11,517.4

¥10,796.5

¥10,283.3

View

Min.: 1
Mult.: 1

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

M85049/1825N10
Amphenol PCD
1: ¥15,108.5
18In Stock

Mfr. Part #
M85049/1825N10

Mouser Part #
523-85049/1825N10

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

Datasheet

18In Stock

¥15,108.5

¥12,842.9

¥12,038.9

¥11,464.2

¥10,917.8

Min.: 1
Mult.: 1

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

M85049/1911N02
Amphenol PCD
1: ¥9,454.4
1In Stock
50Expected 8/13/2026

Mfr. Part #
M85049/1911N02

Mouser Part #
523-85049/1911N02

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

Datasheet

1In Stock

50Expected 8/13/2026

¥9,454.4

¥8,054.2

¥7,484.5

¥7,187.1

View

Min.: 1
Mult.: 1

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

M85049/1915N04
Amphenol PCD
1: ¥10,361.3
10In Stock
25Expected 8/10/2026

Mfr. Part #
M85049/1915N04

Mouser Part #
523-85049/1915N04

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

Datasheet

10In Stock

25Expected 8/10/2026

¥10,361.3

¥8,824.9

¥8,271.8

¥7,878.1

View

Min.: 1
Mult.: 1

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

M85049/1917N02
Amphenol PCD
1: ¥9,841.4
20In Stock

Mfr. Part #
M85049/1917N02

Mouser Part #
523-85049/1917N02

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

Datasheet

20In Stock

¥9,841.4

¥8,534.2

¥8,343.2

¥8,213.6

View

Min.: 1
Mult.: 1

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

M85049/1917N03
Amphenol PCD
1: ¥10,137.1
12In Stock
100On Order

Mfr. Part #
M85049/1917N03

Mouser Part #
523-85049/1917N03

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

Datasheet

12In Stock

100On Order

¥10,137.1

¥8,790

¥8,537.5

¥8,321.6

View

Min.: 1
Mult.: 1

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

M85049/1917N06
Amphenol PCD
1: ¥9,542.4
12In Stock
75Expected 8/18/2026

Mfr. Part #
M85049/1917N06

Mouser Part #
523-85049/1917N06

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

Datasheet

12In Stock

75Expected 8/18/2026

¥9,542.4

¥8,112.3

¥7,602.4

¥6,894.8

¥6,464.6

Min.: 1
Mult.: 1

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

M85049/1917N06A
Amphenol PCD
1: ¥11,411.1
12In Stock

Mfr. Part #
M85049/1917N06A

Mouser Part #
523-85049/1917N06A

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

Datasheet

12In Stock

¥11,411.1

¥9,896.2

¥9,670.3

¥9,167.1

View

Min.: 1
Mult.: 1

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

M85049/1919N03
Amphenol PCD
1: ¥7,326.7
20In Stock

Mfr. Part #
M85049/1919N03

Mouser Part #
523-85049/1919N03

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

Datasheet

20In Stock

¥7,326.7

¥7,325

Min.: 1
Mult.: 1