481-11500-300 - Amphenol Corporation

Description

The 481 Series is a Filter connector plug with either pintail or

solder bucket type fixed pin contacts. These are designed to

meet the mechanical and environmental requirements of MIL-

C-24308. These connectors are available with filter, power

grounding contacts and EMI sealing plugs or any combination

thereof.

Mating Connector Information

481 Series mate with all connectors conforming to MS 18269

and MS 18270 of MIL-C-24308 and Amphenol MIN-RAC 17®

Series miniature connectors.

Amphenol

481 Series

Rack and Panel Environmental Connectors

Introduction

Design Features

1. One piece aluminium alloy shell with clear chromate finish

over cadmium plate. Shell with increased flange width for

improved shielding.

2. One panel cut-out for front and rear mounting.

3. Thermoset Inserts.

4. High temperature silicone rubber moisture seal.

5. Microstrip EMI grounding plate – plated copper alloy.

6. High temperature contact heat dissipator plate.

7. Stress isolated filter contact.

Insert Arrangements

AMPHENOL’s Filter connectors are a system of reliability

engineered receptacles, plugs, contacts and accessories,

designed to pr

ovide a wide range of performance and

servicing features not previously available with ordinary EMI

filtering connectors.

These connectors are rugged enough to operate reliably

under high physical stress, and in the demanding

environmental conditions required of power connections.

The patented stress isolated EMI filter is composed of a

ceramic element attached to a sturdy contact in a way that

dampens all connector stresses and virtually eliminates the

chance of ceramic fracture due to vibration, thermal

and

physical shock.

Once inserted in the connector, the filter contact is engaged

by a Microstrip grounding plate designed to achieve

maximum insertion loss and to inhibit resonances due to

series inductance.

The use of filter connectors has the following advantages:

• Space saving

• Weight saving

• Reduction in solder connections

• Eliminates requirement for RFI screened box

• Provides low impedance ground plane for filter network

2

BACKSHELL

‘D’

FILTER HERE

NOT HERE

BACKSHELL

‘D’

1

2

3

4

5

6

7

1

2

3

4

5

6

7

8

9

SHELL SIZE 1

(9 CONTACTS)

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

SHELL SIZE 2

(15 CONTACTS)

1

2

3

4

5

6

7

8

10

9

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

SHELL SIZE 3

(25 CONTACTS)

1

2

3

4

5

6

7

8

10

9

11

12

13

14

15

16

17

19

18

20

21

22

23

24

25

26

27

29

28

30

31

32

33

34

35

36

37

SHELL SIZE 4

(37 CONTACTS)

1

2

3

4

5

6

7

8

10

9

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

SHELL SIZE 5

(50 CONTACTS)

Dimensions

SHELL

SIZE A B C D E F G H J K L M d

1.226

.750

.984

.728

1 31.14

19.05

24.99

18.49

1.552

1.072

1.312

1.048

2 39.42

27.23

33.32

26.62

2.097

1.612

1.852

.400

.602

.236

.960

.057

.840

1.589

.415

.063/.035

.125/.115

3 53.26

40.94

47.04

10.16

15.29

5.99

24.38

1.45

21.34

40.36

10.54

1.60/0.89

3.18/2.92

2.742

2.254

2.500

2.236

4 69.65

57.25

63.50

56.79

2.650

2.162

2.406

.514

.717

2.135

.534

5 67.31

54.91

61.11

13.05

18.21

54.23

13.56

DIMENSIONS SHOWN OVER BLUE BACKGROUND ARE IN MILLIMETRES

CONTACT

PART NUMBER DIM A DIA B

481-57

481-59

481-65

481-66 .140 .030 0.76

481-68 3.56 .028 0.71

481-92

481-67

481-61 .352 8.94

481-63 .245 6.22

Installation

B

+.000

-.006

C

+.032

-.000

SHELL

SIZE A DIM

MIN -0.15 +0.81

0.790 0.987 0.440

1 20.07 25.07 11.18

1.110 1.315 0.440

2 28.19 33.40 11.18

1.650 1.855 0.440

3 41.91 47.12 11.18

2.300 2.502 0.440

4 58.42 63.55 11.18

2.215 2.410 0.554

5 56.26 61.21 14.07

.120 MAX

3.05

A MAX

Ø B

CONNECTOR AND

CONTACT TYPE IDENTIFICATION

X X X X X

DETAIL A CONTACT COLOUR CODE

APPLICABLE TO SOLDER BUCKET

TERMINATIONS ONLY

NO COLOUR

BAND EMI FILTER

CONTACTS

GREEN

COLOUR BAND POWER

CONTACTS

RED COLOUR

BAND GROUND

CONTACTS

Assembly

may comprise of connector fitted with all pintail or all solder

bucket terminations, or a combination of both. Pintails may be obtained

in different diameters, shapes and lengths to meet users’ special

requirements. Consult factory for further

information

Availability of Terminations

C

.120 DIA

3.05

.140 R. MAX TYP 3.56

A

B

10

o

RECOMMENDED PANEL

CUT OUTS

(Front and Back Mounting)

3

A MAX

D MAX

B MAX

E MAX

C NOM

2 MOUNTING HOLES Ø d

K MAX

L MAX

G MAX

H MAX

J MAX

F

MAX

M

MIN

APPLICABLE TO SOLDER

CONTACTS ONLY

SEE DETAIL A

Contact Specifications (Typical Contacts)

CONTACT TYPE FILTER POWER

Pintail Termination

(See Page 3) 481-92 481-63

481-57

481-65

481-67 481-61

481-66 481-68

Solder Bucket Termination 481-55 481-8 481-26

481-15 481-16 481-20

Contact Part Number

Circuit Type P1 P1 C LRC CLR NA

Pass Band

dc to 3dB cut off Frequency Fca = 15MHz 4.5MHz 200KHz NA

(-0) Capacitance (Picofarads) @25oC

- minimum at 1 KHz (+100%)

500 1750 50000 NA

dc 200 200 100 500

at 85oC ac (rms) 125 125 50 300

dc 150 150 100 500

Working Voltage

Sea Level

(50mA max. charging current) at 125oC ac (rms) 125 125 50 300

Dielectric Withstanding Voltage (dc) @ 25oC

(50mA max. charging current) 500 500 300 1000

Insulation Resistance (gigahoms) –25oC

- Minimum 5 5 10

Current Rating (amperes)

- maximum ** dc and low frequencies 3 3 7.5

Filter rf Current (amperes)

- minimum ** at any frequency 0.25 NA

Operating Temperature ** (oC) -55 to +150

0.1 MHz

- - -

1 MHz

- - 15

10 MHz

- 5 33

100 MHz

20 40 45

Insertion Loss (decibels) @ 25oC

- minimum per MIL STD-220 (No Load) at

(Performance in Mated Connectors)

For Typical Insertion Loss

See below (results will vary with

temp. source and load impedance) 1000MHz

35 55 50

Same performance

as for ‘C’ version

under Mil-Std-220

but improved filter-

filtering offered for

other Zs & Z1 values

NA

Crosstalk Attenuation (decibels)

(coupling between contacts)

- minimum at 100MHz

Power to Filter

Filter to Filter 30

60

* Consult AMPHENOL FACTORY if your filter needs are not reflected in this catalogue.

** Upper limit is the maximum allowable internal hot spot temperature resulting from any combination of electrical and load ambient.

Typical Insertion Loss

Tests performed in strict accordance with MIL-STD-220* (No-Load) on Contacts in a 481 Series connector mated with a

Standard Non-Filter connector.

CAUTION – Comparison with other filter connector manufacturers data may be misleading unless the following factors are

taken into account:

(1) is official (unmodified) MIL-STD-220 test method ultilised as basis for performance depicted? Modification will result in

an apparent (ficticious) higher response!

(2) is performance shown for filter contacts installed in connectors? If performance is based on discrete (single) contacts

tested to MIL-STD-220, higher levels of I.L. will be indicated due to grounding limitations inherent in any connector

design.

80

60

40

20

00.1 1 10 100 1000

FREQUENCY (MHz)

CAPACITANCE VALUES

1750pF

500pF

50000pF

481.15, - 16, - 26 481-8

481-55

4

481 Series

Ordering Information by Amphenol Part Number

481 - 1 3 25 0 - 100

Contact Combination Codes

Note 1 –

Customer may select any combination of filter, power, grounding contacts or EMI sealing plugs. Contact Combination

Code will be reflected by the last three digits in the above part number and will be assigned by the factory.

Part Number

Solder Bucket Pintail Standard Contact Combination Codes

Filter Contact

Power Contact

Grounding Contact

EMI Sealing Plug

See Page 4

481-20

481-25

481-24

481-68

481-59

- XXX

- 100

- 200

- 300

- 400

- 500

Contains only 481-8 Filter Contacts

Contains only 481-15 Filter Contacts

Contains only 481-16 Filter Contacts

Contains only 481-26 Filter Contacts

Contains only 481-55 Filter Contacts

Series Number

481

Connector Type

1 – Plug with Pin Contacts

Shell Size

1, 2, 3, 4, 5

Contact Combination Code

See Note 1

No. of Coaxial Contacts

0

No. of Size 20 Contacts

09, 15, 25, 37, 50

Notice:

Products are sold subject to Amphenol’s Conditions of Sale (“the standard conditions”). All specifications and statements

contained herein are believed to be correct at th

e time of printing but no representation or warranty, express or implied, is given as to any

specification or statement contained herein. Product specifications including performance characteristics are typical only and subject to

deviation. Specificatio

ns are also subject to change without notice. Users should not assume that all safety measures are indicated or that

other measures may not be required. No representation or warranty, express or implied, is given that any use of products (including any

s

tated or suggested use) does not infringe any patent, registered design or other third party rights and no stated or suggested use of

products can be taken to recommend any such infringement.

Amphenol Thanet Way, Whitstable, Kent. CT5 3JF Tel: 01227 773200 Fax: 01227 276571

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