Circular MIL Spec Backshells – Mouser Singapore

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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: $107.86
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

Learn More

Datasheet

37In Stock

$107.86

$101.58

$86.33

$85.39

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: $108.43
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

$108.43

$99.62

$88.64

$84.66

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: $121.07
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

$121.07

$115.05

$110.88

$98.38

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: $120.72
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

$120.72

$110.09

$105.85

$102.32

$96.66

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: $133.13
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

$133.13

$121.40

$116.73

$112.84

$106.61

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: $116.66
10In Stock
50Expected 23/3/2026

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 23/3/2026

$116.66

$109.16

$96.72

$92.17

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: $116.66
11In Stock
25Expected 27/4/2026

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 27/4/2026

$116.66

$109.16

$96.72

$92.16

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: $153.16
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

$153.16

$140.57

$135.16

$130.65

$123.43

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: $153.19
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

$153.19

$140.60

$135.18

$130.67

$123.46

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: $133.13
24Expected 16/3/2026

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 16/3/2026

$133.13

$121.40

$116.73

$112.84

$106.61

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: $160.75
24Expected 16/3/2026

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 16/3/2026

$160.75

$147.53

$141.86

$137.12

$129.55

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: $167.55
24Expected 16/3/2026

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 16/3/2026

$167.55

$153.78

$147.85

$142.92

$135.02

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: $114.08
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

$114.08

$110.27

$104.18

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: $119.79
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

$119.79

$115.79

$109.39

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: $136.61
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

$136.61

$124.59

$119.79

$115.79

$109.39

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: $122.81
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

$122.81

$118.71

$112.15

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: $160.73
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

$160.73

$147.51

$141.84

$137.10

$129.53

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: $147.85
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

$147.85

$142.92

$135.02

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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