Circular MIL Spec Backshells

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QPL Composite Plated EMI/RFI Braided Backshells

Amphenol PCD QPL Composite Plated EMI/RFI Braided Backshells offer effective shielding due to the 360° contact of the braid and are suitable for weight-sensitive applications. Composite backshells are sought after for harsh environments because metal backshells are susceptible to corrosion. These backshells feature a pre-shielded strain relief, EMI/RFI shielding, and AS85049 qualification. Amphenol PCD QPL Composite Plated EMI/RFI Braided Backshells mate with MIL-DTL-38999 Series III connectors and are ideal for avionics, communications, military aerospace, and naval applications.

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Part #

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; STR; Composite

M85049/103-09
Amphenol PCD
1: 335,70 RON
37In Stock

Mfr. Part No.
M85049/103-09

Mouser Part No
523-M85049/103-09

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; STR; Composite

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Datasheet

37In Stock

335,70 RON

316,14 RON

268,65 RON

265,73 RON

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

Straight

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; STR; Composite

M85049/103-11
Amphenol PCD
1: 337,46 RON
26In Stock

Mfr. Part No.
M85049/103-11

Mouser Part No
523-M85049/103-11

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; STR; Composite

Learn More

Datasheet

26In Stock

337,46 RON

310,05 RON

275,85 RON

263,47 RON

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

Straight

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; STR; Composite

M85049/103-17
Amphenol PCD
1: 376,80 RON
25In Stock

Mfr. Part No.
M85049/103-17

Mouser Part No
523-M85049/103-17

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; STR; Composite

Learn More

Datasheet

25In Stock

376,80 RON

358,04 RON

345,06 RON

306,18 RON

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

Straight

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; STR; Composite

M85049/103-19
Amphenol PCD
1: 375,69 RON
25In Stock

Mfr. Part No.
M85049/103-19

Mouser Part No
523-M85049/103-19

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; STR; Composite

Learn More

Datasheet

25In Stock

375,69 RON

342,59 RON

329,41 RON

318,40 RON

300,79 RON

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

Straight

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 45 ; Composite

M85049/104-11
Amphenol PCD
1: 414,32 RON
35In Stock

Mfr. Part No.
M85049/104-11

Mouser Part No
523-M85049/104-11

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 45 ; Composite

Learn More

Datasheet

35In Stock

414,32 RON

377,80 RON

363,27 RON

351,14 RON

331,78 RON

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

45 Deg

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; STR; Composite

M85049/103-13
Amphenol PCD
1: 363,07 RON
10In Stock
50Expected 3/23/2026

Mfr. Part No.
M85049/103-13

Mouser Part No
523-M85049/103-13

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; STR; Composite

Learn More

Datasheet

10In Stock

50Expected 3/23/2026

363,07 RON

339,73 RON

301,00 RON

286,86 RON

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

Straight

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; STR; Composite

M85049/103-15
Amphenol PCD
1: 363,07 RON
11In Stock
25Expected 4/27/2026

Mfr. Part No.
M85049/103-15

Mouser Part No
523-M85049/103-15

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; STR; Composite

Learn More

Datasheet

11In Stock

25Expected 4/27/2026

363,07 RON

339,73 RON

301,00 RON

286,81 RON

View

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

Straight

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 90 ; Composite

M85049/105-09
Amphenol PCD
1: 476,64 RON
13In Stock

Mfr. Part No.
M85049/105-09

Mouser Part No
523-M85049/105-09

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 90 ; Composite

Learn More

Datasheet

13In Stock

476,64 RON

437,46 RON

420,66 RON

406,57 RON

384,14 RON

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

90 Deg

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 90 ; Composite

M85049/105-11
Amphenol PCD
1: 476,74 RON
3In Stock
50On Order

Mfr. Part No.
M85049/105-11

Mouser Part No
523-M85049/105-11

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 90 ; Composite

Learn More

Datasheet

3In Stock

50On Order

476,74 RON

437,56 RON

420,71 RON

406,68 RON

384,24 RON

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

90 Deg

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 45 ; Composite

M85049/104-13
Amphenol PCD
1: 414,32 RON
24Expected 3/16/2026

Mfr. Part No.
M85049/104-13

Mouser Part No
523-M85049/104-13

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 45 ; Composite

Learn More

Datasheet

24Expected 3/16/2026

414,32 RON

377,80 RON

363,27 RON

351,14 RON

331,78 RON

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

45 Deg

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 90 ; Composite

M85049/105-13
Amphenol PCD
1: 500,28 RON
24Expected 3/16/2026

Mfr. Part No.
M85049/105-13

Mouser Part No
523-M85049/105-13

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 90 ; Composite

Learn More

Datasheet

24Expected 3/16/2026

500,28 RON

459,14 RON

441,48 RON

426,75 RON

403,15 RON

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

90 Deg

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 90 ; Composite

M85049/105-19
Amphenol PCD
1: 521,41 RON
24Expected 3/16/2026

Mfr. Part No.
M85049/105-19

Mouser Part No
523-M85049/105-19

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 90 ; Composite

Learn More

Datasheet

24Expected 3/16/2026

521,41 RON

478,55 RON

460,14 RON

444,80 RON

420,21 RON

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

90 Deg

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 45 ; Composite

M85049/104-09
Amphenol PCD
25: 355,02 RON
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
M85049/104-09

Mouser Part No
523-M85049/104-09

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 45 ; Composite

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

355,02 RON

343,15 RON

324,23 RON

Min.: 25
Mult.: 25

MIL-DTL-38999 III, IV

EMI/RFI Backshells

Straight

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 45 ; Composite

M85049/104-15
Amphenol PCD
25: 372,77 RON
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
M85049/104-15

Mouser Part No
523-M85049/104-15

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 45 ; Composite

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

372,77 RON

360,35 RON

340,43 RON

Min.: 25
Mult.: 25

MIL-DTL-38999 III, IV

EMI/RFI Backshells

45 Deg

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 45 ; Composite

M85049/104-17
Amphenol PCD
1: 425,14 RON
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
M85049/104-17

Mouser Part No
523-M85049/104-17

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 45 ; Composite

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

425,14 RON

387,71 RON

372,77 RON

360,35 RON

340,43 RON

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

45 Deg

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 45 ; Composite

M85049/104-19
Amphenol PCD
25: 382,18 RON
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
M85049/104-19

Mouser Part No
523-M85049/104-19

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 45 ; Composite

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

382,18 RON

369,40 RON

348,98 RON

Min.: 25
Mult.: 25

MIL-DTL-38999 III, IV

EMI/RFI Backshells

45 Deg

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 90 ; Composite

M85049/105-15
Amphenol PCD
1: 500,18 RON
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
M85049/105-15

Mouser Part No
523-M85049/105-15

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 90 ; Composite

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

500,18 RON

459,04 RON

441,38 RON

426,64 RON

403,10 RON

Min.: 1
Mult.: 1

MIL-DTL-38999 III, IV

EMI/RFI Backshells

90 Deg

Nickel

Brass

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 90 ; Composite

M85049/105-17
Amphenol PCD
25: 460,14 RON
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
M85049/105-17

Mouser Part No
523-M85049/105-17

Amphenol PCD

Circular MIL Spec Backshells Backshell; EMI/RFI Strain Relief; 90 ; Composite

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

460,14 RON

444,80 RON

420,21 RON

Min.: 25
Mult.: 25

MIL-DTL-38999 III, IV

EMI/RFI Backshells

90 Deg

Nickel

Brass

QPL Composite Plated EMI/RFI Braided Backshells

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