1-583718-3 - Tyco Electronics

Instruction Sheet

Twin Leaf

Printed Circuit (PC) Board 408-7527

(was IS 7527)

LOC B

of 5

2007 Tyco Electronics Corporation, Harrisburg, PA

All International Rights Reserved

TE logo and Tyco Electronics are trademarks.

*Trademark. Other products, logos, and company names used are the property of their respective owners.

TOOLING ASSISTANCE CENTER 1-800-722-1111

PRODUCT INFORMATION 1-800-522-6752 This controlled document is subject to change.

For latest revision and Regional Customer Service,

visit our website at

www.tycoelectronics.com

11 APR 07 Rev A

Edge Connectors

Dummy Contact

(583857)

Standard Crimp

Contact (Typ)

Locking

Lance

Solder Eyelet

Contact (Typ)

Posted Contact

Rear of Connector

Mounting Ears Letter Code

Number Code

Front of Connector

Inter-Contact

Keying Plug

(583274)

Retaining Spring

(583691)

On-Contact

Keying Plug

(583764)

CAVITY CENTERLINE HOUSING

SPACING W/O MOUNTING EARS W/MOUNTING EARS W/THREADED INSERTS W/POSTED CONTACTS

2.54 [.100] 583717 583718 583861 --- 583894

3.18 [.125] 583873 583864 583891 ---

3.96 [.156] --- 583859 --- ---

Figure 1

1. INTRODUCTION

Twin Leaf PC Board Edge Connectors are designed

for wire–to–pc board applications. To meet specific

circuit requirements, housings are supplied (1) to be

assembled using contacts, retaining springs, and

keying plugs as needed, or (2) preloaded with 0.64

mm [.025 in.] square posted contacts.

This instruction sheet covers the contacts,

accessories, mounting procedures, and pc board

layout dimensions recommended for the Twin Leaf

housings listed in the table in Figure 1. Read these

instructions, and those referenced, before assembling

the connector.

See Section 9, REVISION SUMMARY, for revision

information.

All dimensions on this document are in metric

units [with U.S. customary units in brackets].

Figures and illustrations are for identification only

and are not drawn to scale.

2. DESCRIPTION

Twin Leaf housings are one–piece units molded from

glass–filled nylon. Housings are obtainable with

variations of 6 through 50 dual–cavity positions on

2.54 mm [.100 in.] centerlines; 6 through 44 positions

on 3.175 mm [.125 in.] centerlines; and 6 through 28

positions on 3.96 mm [.156 in.] centerlines. Housings

to be assembled, and housings preloaded with posted

contacts, are available with and without mounting

ears, and with threaded inserts. Refer to Figure 1.

Individual cavity identification is molded on the upper

and lower rows, FRONT and REAR. Housings may

be assembled to accept single or double–sided pc

board applications.

NOTE

408-7527

Twin Leaf PC Board Edge Connectors

Rev

of 5 Tyco Electronics Corporation

CAVITY

WIRE

CONTACT PART NUMBERS HAND

CONTACT

TYPE

CAVITY

CENTERLINE

WIRE

SIZE

INSUL DIA.

STRIP FORM FOR LOOSE PIECE

HAND

CRIMPING

TOOL

TYPE

CENTERLINE

SPACING

SIZE

(AWG)

INSUL DIA

.MINI-

APPLICATOR STANDARD

APPLICATOR PART

NO. COLOR

CODE

TOOL

(DOCUMENT)

2.54, 3.18, 3.96

[.100, .125, .156] 28-24 0.89-1.40

[.035-.055] 583616-2, -3,

-8, -10 583616-6 583616-4,

-5, -9, -11 Orange 90268-1

(408-7531)

2.54, 3.18, 3.96

[.100, .125, .156] 24-20 1.22-1.52

[.048-.060] 583853-2, -3,

-8, -10 583853-7 583853-4,

-5, -9, -11 Green 91535-1 (N/A)

Crimp 3.18, 3.96

[.125, .156] 22-18 1.24-2.41

[.049-.095] 583649-2, -3,

-4 --- 583649-5,

-6, -7 Violet 90264-1

(408-7551)

3.18, 3.96

20 16

1.85-2.29

[.073-.090] 583875-2 --- 583875-3

White

90285-1

[.125, .156]

2.16-2.67

[.085-.105] 530224-2 --- ---

White

(408-7583)

Solder

Eyelet 2.54, 3.18

[.100, .125] --- --- --- --- 583854-3, -5 ---

Posted

2.54 [.100] --- --- --- --- 583879-4 ---

Posted

3.18 [.125] --- --- --- --- 583884-1 ---

Figure 2

3. CONTACTS

Contacts must be compatible with the housings.

The cavity centerline spacing of the housing will

determine the appropriate contacts.

3.1. Selection

Refer to Figure 2, and then (1) determine the type of

contact to be used, and the cavity centerline spacing

of the housing; (2) for crimp type contacts, select wire

within the specified size and insulation diameter; and

(3) select the appropriate strip of loose piece

contacts.

Solder eyelet contacts are generally used for field

repair, or when a hand crimping tool is not readily

available.

3.2. Crimping

Strip form contacts are designed to be crimped with a

standard or miniature applicator in an automatic or

semi–automatic machine. Consult your local Tyco

Electronics Representative or contact the Tooling

Assistance Center at the bottom of page 1 for

assistance in selecting the applicator and machine

that will best suit your production needs.

Loose piece contacts are designed to be crimped with

hand crimping tools listed in Figure 2. A small color

code dot appears on the underside of each contact,

and above the crimp section on the compatible hand

tool. Refer to the instruction sheet (See Figure 2)

packaged with the tool for specific crimping

procedures.

3.3. Insertion

An insertion tool is NOT required for inserting

contacts into these connector housings. To insert a

contact, proceed as follows:

1. Align the contact with the REAR of the contact

cavity.

2. Position the contact so the springs are facing

the center wall of the housing, between the upper

and lower cavities. See Figure 3.

The contact may be inserted straight into the

cavity, or at a slight angle away from the

centerline of the housing.

Figure 3

Cross-Section View of Housing

Rear of

Contact

Cavity Upper Contact

Cavity

Locking

Lance

Contact

Springs

Acceptable

Not

Recommended

Correct

Centerline of

Housing

Center

Wall Lower Contact

Cavity Dummy Contact

NOTE

408-7527

Twin Leaf PC Board Edge Connectors

of 5Rev

Tyco Electronics Corporation

The contact must NOT cross the centerline of the

housing or contact damage may result.

3. Grasp the wire directly behind the contact

insulation barrel, and push the contact straight into

the cavity until it bottoms with an audible click.

4. Pull back lightly on the wire to be sure the

locking lance has locked in the cavity. Refer to

Figure 3.

3.4. Extraction

Extraction Tool 91073 is designed for removing

contacts from these connectors. Insert the releasing

tip into the FRONT of the cavity between the contact

and outer wall. Hold the tool against the connector

and depress the extraction handle. Remove the tool

and pull the contact out of the REAR of the cavity.

Refer to Instruction Sheet 408–7529 packaged with

the extraction tool for specific extraction procedures.

4. DUMMY CONTACTS

(Figure 3)

Dummy contacts are pre–crimped standard contacts

designed for use in double–sided pc board

applications. These contacts provide additional

mechanical pressure for partially loaded connectors,

and are inserted and extracted the same as standard

contacts. Dummy contacts should be placed in each

empty cavity opposite a standard working contact.

5. RETAINING SPRINGS

Retaining springs are designed for use in single–sided

pc board applications. They are inserted in the

unused side of the connector to provide and balance

the necessary board retention capabilities.

The recommended ratio for balanced retention is one

retaining spring to six contacts. The minimum number

of springs which should be used is one for every

seven contact positions.

1. Align the short end of the retaining spring with

the FRONT of the contact cavity.

2. Push the spring straight in until the short end

snaps into place behind the cavity ridge. See

Figure 4.

To extract a retaining spring, select one of the

following methods.

1. Insert a jewelers screwdriver into the REAR of a

cavity between the spring and center wall of the

connector. Depress the short end of the spring,

and push the retaining spring out the FRONT of

the connector.

2. Use Extraction Tool 91073 (contact extraction

tool). Insert releasing tip into the REAR of the

cavity between the spring and center wall of the

connector. Hold the tool against the connector and

depress the extraction handle. Remove the tool

and pull the retaining spring out the FRONT of the

cavity.

Figure 4

Cross-Section View of Housing

Retaining Spring Cavity Ridge

Short End of SpringFront of Connector

6. KEYING PLUGS

Connectors can be polarized with inter–contact keying

plugs that fit into slots between contact cavities, or

with on–contact keying plugs that fit into empty dual

contact cavities (a dual position) in the connector. See

Figure 5.

To insert an inter–contact keying plug, align the

beveled corners with the “V” notches of an upper and

lower rib on the FRONT of the connector. Insert the

plug straight into the connector until it bottoms.

To insert an on–contact keying plug, align it with

empty dual contact cavities on the FRONT of the

connector. Insert the plug straight into the connector

until the locking tabs snap over the BACK edge of the

connector.

A slot must be cut in the pc board to accept the

inter–contact or on–contact keying plug. Note that the

slot for the inter–contact plug must be located

between the circuit pads of the pc board, and the slot

for the on–contact plug must be located on the circuit

pad area of the pc board.

7. PANEL CUTOUT

Connectors that have mounting ears with or without

threaded inserts are designed for panel mounting.

The connector mounting location (FRONT or BACK)

must be determined before making the panel cutout.

FRONT mounting requires the use of a “C”

dimension, while BACK mounting requires a “D”

dimension. Refer to Figure 6. Note that the cutout for

BACK mounting will be larger than the cutout for

FRONT mounting.

CAUTION

408-7527

Twin Leaf PC Board Edge Connectors

Rev

of 5 Tyco Electronics Corporation

Figure 5

Empty Dual-Contact

Cavities Rib V" Notch

Beveled

Corners

Inter-Contact

Keying Plug

On-Contact

Keying Plug

Locking Tab

Front of

Connector

PC Board Cutout

1.52 [.060] Min. 0.76 [.030] Min.

8.89

[.350]

Min.

Slot for Inter-Contact

Keying Plug

Circuit

Pad Area

Circuit Pad

Slot for

On-Contact

Keying Plug

Before figuring the panel cutout dimensions,

determine the cavity centerline spacing and the

number of dual–cavity positions of the connector to

be used. Then refer to the table in Figure 6 and

proceed as follows:

1. Select the fixed dimensions (“A” and “B”)

according to the cavity centerline spacing.

2. Multiply the cavity centerline spacing by the

number of dual positions. Add this dimension to the

appropriate variable (base) dimensions from the

table, (see note

For example: A connector with 2.54 mm [.100 in.]

cavity centerline spacing and 10

dual–cavity positions. Add 25.4 mm

[1.000 in.] to “C” base or “D” base

dimension, and 25.4 mm [1.000 in.]

to “E” base dimension.

For 25.4 mm [1.000 in.] centerlines, the E" base

dimension is dependent on the connector base

part number (see note

{

After making the cutout, (1) secure the connector

(with mounting ears) to a panel with No. 4–40 screws,

lock–washers, and nuts, or (2) secure the connector

(with threaded inserts) to a panel with No. 4–40 UNC

screws.

8. PC BOARD LAYOUT

These connectors are designed to accept a pc board

1.40–1.78 mm [.055– .070 in.] thick. The overall width

of the pc board must be within +0.13 mm [.005 in.] to

ensure alignment between the circuit pads and the

contacts.

C - Front Panel Mtg

D - Back Panel Mtg

CAVITY

CENTERLINE

FIXED

DIM

VARIABLE

DIMENSIONS

CENTERLINE

SPACING ABC

(Base) D

(Base) E

(Base)

2.54

[.100] 4.85

[.191] 9.70

[.382] 3.86

[.152] 8.43

[.332] See

Note

{

3.18

[.125] 5.94

[.234] 11.91

[.469] 3.23

[.127] 8.05

[.317] 13.84

[.545]

3.96

[.156] 5.94

[.234] 11.91

[.469] 1.83

[.072] 9.14

[.360] 15.21

[.599]

Fixed dimensions (A" and B") are the same for all connectors with

a given cavity centerline spacing.

Variable dimensions include the base dimensions provided C"

(base) and E" (base), or D" (base) and E" (base), depending on

front or back panel mounting, plus the result of multiplying the cavity

centerline spacing by the number of dual positions.

{

Mounting hole dimension E" (base) for connectors with cavities on

2.54 mm [.100 in.] centerlines will depend on the connector base part

number.

Base part number 583861 or 583894; E" (base) is 14.60 mm

[.575 in.].

Base part number 583718; E" (base) is 17.78 mm [.700 in.].

Figure 6

NOTE

408-7527

Twin Leaf PC Board Edge Connectors

of 5Rev

Tyco Electronics Corporation

PC Board Layout

Engagement Depth

8.89 [.350] Min.

Datum

D+0.13 [.005]

Equal Spaces

BBB

0.38 [.015]

1.40-1.78

[.055-.070]

Equal spaces = total number of dual-cavity

positions in connector, minus one, times cavity

centerline dimension (A").

Example: 6 dual-cavity position connector with 2.54 mm [.100 in.]

centerlines.6-1=5x2.54 mm [.100 in.] = 12.7 mm [.500 in.].

All dimensions +0.13 mm [.005 in.] tolerance

(except as noted). Tolerances are noncumulative.

The D" dimension is equal to the nominal card

slot width on the respective housing minus 0.36

mm [.014 in.].

CAVITY DIMENSIONS

CENTERLINE

SPACING A" B" C" +0.13 [.005]

-0.00 [.000]

2.54 [.100] 2.54 [.100] 2.36 [.093] 1.32 [.052]

3.18 [.125] 3.18 [.125] 3.00 [.118] 1.98 [.078]

3.96 [.156] 3.96 [.156] 3.89 [.153] 2.39 [.094]

Figure 7

When using a pc board that is wider than the entry

slot of the connector, a notch must be cut in the pc

board to provide proper engagement. The

engagement depth must be a minimum of 8.89 mm

[.350 in.]. Refer to Figure 7 for the recommended pc

board layout dimensions.

9. REVISION SUMMARY

The following changes have been made to this

revision:

Updated document to corporate requirements

New format

Deleted obsolete part numbers in table in

Figures 1 and 2, and notes in Figure 6

NOTE