MTA-156

.156 [3.96]

.130

[3.30]

.105

[2.67]

.440

[11.18]

.335

[8.51]

Retention Dimple

.127

[3.23]

.440

[11.18]

Note: This portion of front locking bar 

may or may not be present

.335

[8.51]

Closed End Covers

Material (RoHS Compliant)

Strain Relief Covers —UL94V-2

rated, nylon, white

Dust Covers — UL94V-0 rated,

polyester, white

Strain Relief Covers Dust Covers

Base Part Numbers

Closed End

Strain Relief Dust

Covers Covers

Cover No. of Cover No. of

Part Nos. Circuits Part Nos. Circuits

643067 2–24 640551 2–24

Cover Length

No. of Dim. Prefix/

Circuits A Suffix

.312

-2

7.92

.468

-3

11.89

.624

-4

15.85

.780

-5

19.81

.936

-6

23.77

1.092

-7

27.74

1.248

-8

31.7

1.404

-9

35.66

1.560

1- -0

39.62

1.716

1- -1

43.59

1.872

1- -2

47.55

2.028

1- -3

51.51

2.184

1- -4

55.47

2.340

1- -5

59.44

2.496

1- -6

63.4

2.652

1- -7

67.36

No. of Dim. Prefix/

Circuits A Suffix

No. of Dim. Prefix/

Circuits A Suffix

2.808

1- -8

71.32

2.964

1- -9

75.29

3.120

2- -0

79.25

3.276

2- -1

83.21

3.432

2- -2

87.17

3.588

2- -3

91.14

3.744

2- -4

95.1

Cover Ordering Information

The “Base Part Numbers”

Chart at right shows the

base part number and

number of circuits available

for the described cover.

Prefixes and suffixes are

determined by the number

of circuit positions in the

cover. For example, the

complete part number for a

10-position closed-end

strain relief cover would be:

Base number 643067 plus

prefix-and-suffix

1- — -0

The correct ordering number

1-643067-0

Feed-Thru Covers

Material (RoHS Compliant)

Strain Relief Covers —UL94V-2

rated, nylon, white

Dust Covers — UL94V-0 rated,

polyester, white

Strain Relief Covers

Dust Covers

.127

[3.23]

.470

[11.94]

Note: This portion of front locking bar 

may or may not be present

.325

[8.26]

.475

[12.07]

.130

[3.3]

Retention Dimple

Base Part Numbers

Feed-Thru

Strain Relief Dust

Covers Covers

Cover No. of Cover No. of

Part Nos. Circuits Part Nos. Circuits

643071 2–24 640643 2–24

MTA-156 Connector Accessories

MTA, CST-100 II, SL-156 and

AMP Economy Power (EP) Connectors

Catalog 82056 Dimensions are in inches and Dimensions are shown for USA: 1-800-522-6752 South America: 55-11-2103-6000

Revised 6-08 millimeters unless otherwise reference purposes only. Canada: 1-905-470-4425 Hong Kong: 852-2735-1628

specified. Values in brackets Specifications subject Mexico: 52-55-1106-0800 Japan: 81-44-844-8013

www.tycoelectronics.com are metric equivalents. to change. C. America: 57-1-254-4444 UK: 44-208-420-8341

MTA-156

.156 [3.96]

Crimp Snap-in Contacts

Material and Finish

Contacts — Phosphor bronze,

tin plated

.110

[2.79]

.105

[2.67]

.580

[14.73]

.165

[4.19]

Max.

Wire Size Part Nos.

AWG mm

Loose Piece* Strip**

26–22 .12–0.3 640557-3 640556-3

22–18 0.3–0.9 640559-3 640558-3

**Hand Tool No. 59837-1 (408-6528)

**AMP-O-LECTRIC Model “G” Termination

Machine (Request Catalog 65828)

Note: Requires applicator. For part number,

call Technical Support.

Special applications for crimp snap-in contacts are:

1. Double wire per contact

2. Coax or shielded wire

3. Mixed wire size in same connector

Note: Only one crimp snap-in contact per connector.

Wire Size

Part Numbers

AWG mm

Tin Plated .000030 [0.00076] .000015 [0.00038]

Gold Plated Gold Plated

18 0.8–0.9 640631-3 641143-4 641143-3

20 0.5–0.6 640632–3 641144-4 641144-3

22 0.3–0.4 640633-3 641145-4 641145-3

24 0.2 640634-3 641146-4 641146-3

26 0.12–0.15 640635-3 641147-4 641147-3

Replacement IDC Contacts

Material and Finish

Contacts — Phosphor bronze, post tin

plated; .000030 [0.00076] or .000015

[0.00038] post gold plated over nickel

Note: Tyco Electronics does not rec-

ommend terminating an MTA

contact more than one time.

Use replacement contacts

when required for field repairs

or wire changes.

.637

[16.18]

.125

[3.18]

MTA-156 Connector Accessories (Continued)

MTA, CST-100 II, SL-156 and

AMP Economy Power (EP) Connectors

Catalog 82056 Dimensions are in inches and Dimensions are shown for USA: 1-800-522-6752 South America: 55-11-2103-6000

Revised 6-08 millimeters unless otherwise reference purposes only. Canada: 1-905-470-4425 Hong Kong: 852-2735-1628

specified. Values in brackets Specifications subject Mexico: 52-55-1106-0800 Japan: 81-44-844-8013

www.tycoelectronics.com are metric equivalents. to change. C. America: 57-1-254-4444 UK: 44-208-420-8341

MTA-156

.156 [3.96]

.375

[9.52]

.300

[7.62]

.065

[1.65]

.051

[1.30]

.066

[1.68]

.070

[1.78]

Dia.

.300

[7.62]

.085

[2.16]

.065

[1.65]

.051

[1.30]

.066

[1.68]

.453

[11.5]

.578

[14.7]

.010

[.254]

Max. R. Typ. at Min.

Tolerance Cutout

Keying Plugs

Material (RoHS Compliant)

UL94V-2 rated, nylon, natural color

Note: Removal of contact is not

necessary when using keying plug.

Loose Piece

Part No. 640629-1 (Flush)

Used with keyed headers

On Carrier Strip

Part No. 641623-1 (Flush)

(10 per strip)

Long Nose

Flush

.125

[3.18]

.500

[12.70]

Ref.

2.525

[64.14]

Ref.

.300

[7.62]

Ref.

Panel Mount End Caps

Part No. 641440-1

Part No. 641533-1

(2-position only)

Material (RoHS Compliant)

UL94V-2 rated, nylon, black

Notes:

1. Both left-hand and right-hand

end caps are attached by a con-

necting tab. This tab must be

broken off prior to installing on

connector.

2. For best results attach panel

mount end caps to the MTA-156

(IDC) connectors shown on pages

36 thru 39. While not preferred,

panel mount end caps can be

attached to MTA-156 (IDC)

posted connector on page 45.

.440

[11.18]

.520

[13.2]

.410

[10.41]

.550

[13.97]

Two-Position Only

641533-1

3- thru 24-Position

641440-1

See Note 1

.453

[11.5]

.010

[.254]

Max. R. Typ.

at Min.

Tolerance

Cutout

No. of Dim.

Pos. A

.736

18.69

.892

22.66

1.204

30.58

1.672

42.47

2.140

54.36

2.608

66.24

4.012

101.9

Recommended Panel Cutout

(Recommended Panel Thickness .062 [1.57] to .067 [1.70] max.)

.564

[14.33]

.520

[13.2]

.440

[11.18]

Part No. 640630-1 (Long Nose)

Used with staked post

MTA-156 Connector Accessories (Continued)

MTA, CST-100 II, SL-156 and

AMP Economy Power (EP) Connectors

Catalog 82056 Dimensions are in inches and Dimensions are shown for USA: 1-800-522-6752 South America: 55-11-2103-6000

Revised 6-08 millimeters unless otherwise reference purposes only. Canada: 1-905-470-4425 Hong Kong: 852-2735-1628

specified. Values in brackets Specifications subject Mexico: 52-55-1106-0800 Japan: 81-44-844-8013

www.tycoelectronics.com are metric equivalents. to change. C. America: 57-1-254-4444 UK: 44-208-420-8341

Part #	3-640440-7
Description	CONN IDC CONN F 7 POS 2.54MMIDT RA CBL MNT - Bulk
Category	CONNECTOR
Availability	Out of Stock
Qty	0

3-640440-7

Related Items

Technical Document