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In Stock

RoHS

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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 ENV EMI/ RFI ST NIC SZ 17

M85049/1817N02
Amphenol PCD
1: Rp1.205.332
25In Stock

Mfr. Part No.
M85049/1817N02

Mouser Part No
523-85049/1817N02

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

Datasheet

25In Stock

Rp1.205.332

Rp1.045.355

Rp1.021.505

Rp1.015.084

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

M85049/1817N03
Amphenol PCD
1: Rp994.537
22In Stock
25Expected 08/10/2026

Mfr. Part No.
M85049/1817N03

Mouser Part No
523-85049/1817N03

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

Datasheet

22In Stock

25Expected 08/10/2026

Rp994.537

Rp917.667

Rp911.062

Rp898.954

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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: Rp1.323.480
20In Stock

Mfr. Part No.
M85049/1817N05A

Mouser Part No
523-85049/1817N05A

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

Datasheet

20In Stock

Rp1.323.480

Rp1.176.529

Rp1.149.744

Min.: 1
Mult.: 1

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

M85049/1817N06
Amphenol PCD
1: Rp1.375.033
14In Stock
125Expected 26/10/2026

Mfr. Part No.
M85049/1817N06

Mouser Part No
523-85049/1817N06

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

Datasheet

14In Stock

125Expected 26/10/2026

Rp1.375.033

Rp1.168.824

Rp1.095.623

Rp1.043.520

Rp993.619

Min.: 1
Mult.: 1

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

M85049/1819N04
Amphenol PCD
1: Rp1.043.520
21In Stock

Mfr. Part No.
M85049/1819N04

Mouser Part No
523-85049/1819N04

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

Datasheet

21In Stock

Rp1.043.520

Rp998.573

Rp997.289

Rp909.595

Min.: 1
Mult.: 1

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

M85049/1819N05B
Amphenol PCD
1: Rp1.317.977
21In Stock

Mfr. Part No.
M85049/1819N05B

Mouser Part No
523-85049/1819N05B

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

Datasheet

21In Stock

Rp1.317.977

Rp1.171.576

Rp1.144.974

Rp1.092.688

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Min.: 1
Mult.: 1

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

M85049/1821N03
Amphenol PCD
1: Rp1.315.225
15In Stock

Mfr. Part No.
M85049/1821N03

Mouser Part No
523-85049/1821N03

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

Datasheet

15In Stock

Rp1.315.225

Rp1.074.709

Rp1.041.502

Rp998.206

Rp950.323

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

M85049/1821N04
Amphenol PCD
1: Rp1.268.259
15In Stock

Mfr. Part No.
M85049/1821N04

Mouser Part No
523-85049/1821N04

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

Datasheet

15In Stock

Rp1.268.259

Rp1.100.760

Rp1.067.003

Rp1.016.001

Rp967.568

Min.: 1
Mult.: 1

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

M85049/1821N06
Amphenol PCD
1: Rp1.173.043
22In Stock

Mfr. Part No.
M85049/1821N06

Mouser Part No
523-85049/1821N06

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

Datasheet

22In Stock

Rp1.173.043

Rp1.088.652

Rp1.088.468

Rp1.059.298

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Min.: 1
Mult.: 1

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

M85049/1821N07
Amphenol PCD
1: Rp1.118.739
13In Stock
25Expected 24/11/2026

Mfr. Part No.
M85049/1821N07

Mouser Part No
523-85049/1821N07

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

Datasheet

13In Stock

25Expected 24/11/2026

Rp1.118.739

Rp1.118.372

Rp1.082.964

Min.: 1
Mult.: 1

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

M85049/1823N04
Amphenol PCD
1: Rp1.397.598
14In Stock

Mfr. Part No.
M85049/1823N04

Mouser Part No
523-85049/1823N04

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

Datasheet

14In Stock

Rp1.397.598

Rp1.214.138

Rp1.138.002

Rp1.083.882

Rp1.032.146

Min.: 1
Mult.: 1

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

M85049/1823N04A
Amphenol PCD
1: Rp1.408.056
25In Stock

Mfr. Part No.
M85049/1823N04A

Mouser Part No
523-85049/1823N04A

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

Datasheet

25In Stock

Rp1.408.056

Rp1.251.748

Rp1.223.311

Rp1.172.493

View

Min.: 1
Mult.: 1

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

M85049/1823N05
Amphenol PCD
1: Rp1.431.722
6In Stock
50Expected 27/10/2026

Mfr. Part No.
M85049/1823N05

Mouser Part No
523-85049/1823N05

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

Datasheet

6In Stock

50Expected 27/10/2026

Rp1.431.722

Rp1.236.887

Rp1.159.467

Rp1.104.062

View

Min.: 1
Mult.: 1

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

M85049/1823N06
Amphenol PCD
1: Rp1.481.440
15In Stock

Mfr. Part No.
M85049/1823N06

Mouser Part No
523-85049/1823N06

Circular MIL Spec Backshells 18 Backshell Env-EMI/RFI

Datasheet

15In Stock

Rp1.481.440

Rp1.259.453

Rp1.180.565

Rp1.124.059

View

Min.: 1
Mult.: 1

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

M85049/1823N06B
Amphenol PCD
1: Rp1.494.282
13In Stock

Mfr. Part No.
M85049/1823N06B

Mouser Part No
523-85049/1823N06B

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

Datasheet

13In Stock

Rp1.494.282

Rp1.328.250

Rp1.292.109

Rp1.272.662

View

Min.: 1
Mult.: 1

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

M85049/1825N07A
Amphenol PCD
1: Rp1.572.619
5In Stock

Mfr. Part No.
M85049/1825N07A

Mouser Part No
523-85049/1825N07A

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

Datasheet

5In Stock

Rp1.572.619

Rp1.397.965

Rp1.233.402

Min.: 1
Mult.: 1

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

M85049/1825N07B
Amphenol PCD
1: Rp1.464.928
15In Stock

Mfr. Part No.
M85049/1825N07B

Mouser Part No
523-85049/1825N07B

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

Datasheet

15In Stock

Rp1.464.928

Rp1.387.691

Rp1.387.508

Rp1.378.518

View

Min.: 1
Mult.: 1

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

M85049/1825N10
Amphenol PCD
1: Rp1.668.752
18In Stock

Mfr. Part No.
M85049/1825N10

Mouser Part No
523-85049/1825N10

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

Datasheet

18In Stock

Rp1.668.752

Rp1.418.513

Rp1.329.718

Rp1.266.241

Rp1.205.883

Min.: 1
Mult.: 1

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

M85049/1911N03A
Amphenol PCD
1: Rp974.356
14In Stock

Mfr. Part No.
M85049/1911N03A

Mouser Part No
523-85049/1911N03A

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

Datasheet

14In Stock

Rp974.356

Rp925.372

Rp904.274

Rp892.900

View

Min.: 1
Mult.: 1

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

M85049/1915N05A
Amphenol PCD
1: Rp1.180.749
20In Stock

Mfr. Part No.
M85049/1915N05A

Mouser Part No
523-85049/1915N05A

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

Datasheet

20In Stock

Rp1.180.749

Rp1.023.890

Rp927.757

Min.: 1
Mult.: 1

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

M85049/1917N02
Amphenol PCD
1: Rp1.087.367
20In Stock

Mfr. Part No.
M85049/1917N02

Mouser Part No
523-85049/1917N02

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

Datasheet

20In Stock

Rp1.087.367

Rp942.984

Rp921.520

Rp909.962

View

Min.: 1
Mult.: 1

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

M85049/1917N06A
Amphenol PCD
1: Rp1.260.370
12In Stock

Mfr. Part No.
M85049/1917N06A

Mouser Part No
523-85049/1917N06A

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

Datasheet

12In Stock

Rp1.260.370

Rp1.093.055

Rp1.068.104

Rp1.012.516

View

Min.: 1
Mult.: 1

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

M85049/1919N03
Amphenol PCD
1: Rp810.710
17In Stock

Mfr. Part No.
M85049/1919N03

Mouser Part No
523-85049/1919N03

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

Datasheet

17In Stock

Rp810.710

Rp810.526

Rp788.511

Rp782.090

Quote

Min.: 1
Mult.: 1

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

M85049/1919N06
Amphenol PCD
1: Rp1.224.962
18In Stock
25Expected 25/11/2026

Mfr. Part No.
M85049/1919N06

Mouser Part No
523-85049/1919N06

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

Datasheet

18In Stock

25Expected 25/11/2026

Rp1.224.962

Rp1.039.117

Rp963.715

Rp929.408

View

Min.: 1
Mult.: 1

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

M85049/1921N04
Amphenol PCD
1: Rp1.190.288
26In Stock

Mfr. Part No.
M85049/1921N04

Mouser Part No
523-85049/1921N04

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

Datasheet

26In Stock

Rp1.190.288

Rp1.032.329

Rp1.029.211

Rp1.008.847

View

Min.: 1
Mult.: 1