282917-3 - Tyco Electronics

Application Specification

Terminal Block 114-20079

LOC B

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2008 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

Stacking Connectors

06 AUG 08 Rev E

All numerical values are in metric units [with U.S. customary units in brackets]. Dimensions are in millimeters. Unless

otherwise specified, dimensions have a tolerance of +0.13 and angles have a tolerance of +2

. Figures and

illustrations are for identification only and are not drawn to scale.

1. INTRODUCTION

This specification covers the requirements for application of Terminal Block Stacking Connectors. The

complete line consists of one–piece side entry, angled entry, and top entry printed circuit (pc) board terminal

blocks and plug connectors with mating right–angle or vertical mount pc board headers. PC board headers are

offered with either open and closed ends, and also in double–row configurations. These terminal blocks feature

screw clamp contacts that accept wire sizes 0.03–4 mm2 (solid), or 0.03–2.5 mm2 (stranded). Wire entry is

perpendicular to the screws. They are available in configurations of 2.54, 3.5, 3.81, 5, 5.08, 7.5, 7.62, 10, or

10.16 mm contact centerline spacings.

Side entry wire, angled entry wire, and top entry wire pc board mount terminal blocks (only 5, 5.08, 7.5, and

7.62 mm pitch), as well as the pc board mating header (only 5, 5.08 mm pitch, open–ended, or unshrouded)

are stackable end–to–end without loss of centerline. Ease of assembly is facilitated, in most versions, by

built–in interlocks on the housing.

When corresponding with Tyco Electronics Personnel, use the terminology provided on this specification to

help facilitate your inquiry for information. Basic terms and features of components are provided in Figure 1.

Figure 1 (cont’d)

and 180

Plug

Unshrouded

Pin Header

Closed End

Open End

180

Header

Assemblies

Test Facility

Clamping

Screw

Plug

PC Board Mount

Angled Wire Entry

Top Wire Entry

Retention

Latch

Side Wire Entry

Header

Assembly

NOTE

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Figure 1 (end)

Wire Entries

2nd Level

2nd and 3rd Level

Interlock Feature

Three Level

1st and 2nd Level

Test Facilities

3rd Level

2. REFERENCE MATERIAL

2.1. Revision Summary

This paragraph is reserved for a revision summary covering the most recent additions and changes made to

this specification which include the following:

Updated document to corporate requirements

New format

2.2. Customer Assistance

Reference base part number 284093 and product code 7742 are representative numbers of Terminal Block

Stacking Connectors. Use of these numbers will identify the product line and expedite your inquiries through a

service network established to help you obtain product information. Such information can be obtained through

a local Tyco Electronics Representative or, after purchase, by calling the Tooling Assistance Center or the

Product Information Center number at the bottom of page 1.

2.3. Drawings

Customer Drawings for the connectors are available from the service network. The information contained in

Customer Drawings takes priority if there is a conflict with this specification or with any technical

documentation supplied by Tyco Electronics.

2.4. Specifications

Product Specification 108–20166 provides test and performance requirements.

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2.5. Manuals

Manual 402–40 is available upon request and can be used as a guide in soldering. This manual provides

information on various flux types and characteristics along with the commercial designation and flux removal

procedures. A checklist is included in the manual as a guide for information on soldering problems.

3. REQUIREMENTS

3.1. Materials

Terminal Block Stacking Connectors are made of UL 94V–0 rated PA–66.

3.2. Storage

A. Ultraviolet Light

Prolonged exposure to ultraviolet light may deteriorate the chemical composition used in the pc board jack

connector material.

B. Shelf Life

The jack connectors are packaged and shipped in protective anti–static tube or tray containers. To prevent

damage to these connectors, they should remain in the container until ready for installation. Also, to

prevent possible storage contamination, the connectors should be used on a first in, first out basis.

C. Chemical Exposure

Do not store jack connectors near any chemical listed below as they may cause stress corrosion cracks in

the connector.

Alkalies Ammonia Citrates Phosphates Citrates Sulfur Compounds

Amines Carbonates Nitrites Sulfur Nitrites Tartrates

3.3. Polarization

Design configuration prevents plug and receptacle connectors from being mated incorrectly.

3.4. PC Board Layout

A. Single Connector

Use a pc board with a nominal thickness of 1.6–2.4 mm. See Figure 2. Customer drawings provide a

complete definition of pc board layout.

DESCRIPTION

WIRE SIZE HOLE

DESCRIPTION

SOLID STRANDED DIAMETER (mm)

1mm20.75 mm21.1 +0.1/-0

PC Board Mount

1.5 mm21mm21.1 +0.1/-0

PC Board Mount

2.5 mm21.5 mm21.4 +0.1/-0

4mm22.5 mm21.4 +0.1/-0

Pin Header Unshrouded --- --- 1.4 +0.1/-0

Header Assembly --- --- 1.4 +0.1/-0

Figure 2

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B. Stacked Connectors

PC board mount connectors with 5, 5.08, 7.5, and 7.62 mm pitch; or headers with 5 and 5.08 mm pitch

can be stacked end–to–end without loss of centerline spacing to create the required position size. Ease of

assembly if facilitated in most versions by interlocking features. The 5 and 5.08 mm pitch open–ended

headers are designed for stacking applications. However, those with closed ends are not. See Figure 3.

Figure 3

Dimension A" equals contact centerline spacing (5 or 5.08).

Dimension B" equals 1/2 dimension A".

Value in parenthesis refers to 5.08 pitch headers

3.7

3.2

3.5. Wire Selection, Preparation, and Installation

A. Selection

The connectors will accept wires with conductors of the sizes defined in Figure 4.

B. Strip Length

The wire must be stripped to the proper dimension to ensure correct insertion depth in the connector.

Excessive conductor will be exposed if the strip length is too long and entrapment of the insulation or

improper termination will result if the strip length is too short. See Figure 4.

C. Installation

Two screwdrivers must be used to open and close the screw clamps. The wire must be inserted into the

wire hole until the insulation is even with the housing at the wire hole opening. The screw must be hand

tightened with the proper screwdriver to within the torque provided in Figure 4. Pull back on the wire to be

sure it is secure and check there are no wire strands outside the terminal block.

Figure 4 (cont’d)

Strip Length

DIM A" DIM B" PART NUMBER

1.8 0.3 785730-1

2.5 0.6 785730-2

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DESCRIPTION

WIRE SIZE (mm2)STRIP LENGTH SCREW TORQUE

SCREWDRIVER

DESCRIPTION

SOLID STRANDED (mm) (Nm)

SCREWDRIVER

PC Board Mount 1 0.75 4-5 0.20

785730-1

Plug (3.5-3.81 mm Pitch) 0.05-1.5 5-6 0.25

785730

1.5 1 5-6 0.5

PC Board Mount 2.5 1.5 5.5-6.5 0.5

4 2.5 6.5-7 0.5 785730-2

Plug (90

& 180

) 1.5 1 4-6 0.5

Plug 2.5 1.5 6-7.5 0.5-0.8

Figure 4 (end)

3.6. Physical Characteristics

The terminal block connectors consist of specially designed screw–activated mechanisms that are captivated

inside the housing. When stripped wire is inserted into the connector and the screw is tightened, the screw

activates a clamp which compresses the wire against the terminal. See Figure 5.

Figure 5

Screw Terminal Block

Clamp

Terminal Stripped Wire

3.7. Soldering

Manual 402-40 provides some guidelines for establishing soldering practices. Refer to Paragraph 2.5, Manuals.

A. Fluxing

The contact solder tails and, if applicable, attaching hardware must be fluxed prior to soldering with a

mildly active, rosin base flux. Selection of the flux will depend on the type of pc board and other

components mounted on the board. Additionally, the flux must be compatible with the wave solder line,

manufacturing, health, and safety requirements. Call the Product Information number at the bottom of

page 1 for consideration of other types of flux. Some fluxes that are compatible with these connectors are

provided in Figure 6.

FLUX TYPE

ACTIVITY

RESIDUE

COMMERCIAL DESIGNATION

FLUX TYPE

ACTIVITY

RESIDUE

KESTER

ALPHA

Type RMA (Mildly Activated) Mild Noncorrosive 185/197 611

Center (Activated) Medium May be Corrosive 1544, 1545, 1547 711, 809, 811

T rademark of MacDonald & Co.

Designation of Alpha Metals Inc.

Figure 6

NOTE

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B. Soldering Guidelines

Eurostyle Connectors can be soldered using wave or equivalent soldering techniques. Refer to Manual

402–40 for soldering guidelines. The temperatures and exposure time shall be as specified in Figure 7.

SMT High Temperature Connectors that are compatible with typical surface mount soldering techniques are also

available. They can withstand a maximum temperature of 260

C [500

F] for 1 minute maximum.

SOLDERING TEMPERATURE

TIME

PROCESS CELSIUS FAHRENHEIT (At Max Temp)

Wave Soldering 250

482

5 Seconds

Wave Temperature (Under PC Board)

Figure 7

C. Reflow Parameters

Due to the many variables involved with the reflow process (ie, component density, orientation, etc), we

recommend that the user conduct trial runs under actual manufacturing conditions to ensure product and

process compatibility.

D. Cleaning

After soldering, removal of fluxes, residues, and activators is necessary. Consult with the supplier of the

solder paste and flux for recommended cleaning solvents. The following is a listing of common cleaning

solvents that will not affect the connectors. The connectors will be unaffected by any of these solvents for

the time and temperatures listed in Figure 8.

Cleaners must be free of dissolved flux and other contaminants. We recommend cleaning with the pc

board on its edge. If using an aqueous cleaner, we recommend standard equipment such as a soak–tank

or an automatic in–line machine.

Even when using no clean" solder paste, it is imperative that the contact interface be kept clean of flux and residue,

since it acts as an insulator. Flux may migrate under certain conditions with elevated temperatures and, therefore,

cleaning is necessary even with no clean" paste.

CLEANER TIME

(Mi )

TEMPERATURES (Maximum)

NAME TYPE (Minutes) CELSIUS FAHRENHEIT

Alpha 2110

Aqueous 1 132 270

Bioact EC-7

Solvent 5 100 212

Butyl Carbitol

Solvent 1 Room Ambient

Isopropyl Alcohol Solvent 5 100 212

Kester 5778

Aqueous 5 100 212

Kester 5779

Aqueous 5 100 212

Loncoterge 520

Aqueous 5 100 212

Loncoterge 530

Aqueous 5 100 212

Terpene Solvent Solvent 5 100 212

Product of Fry’s Metals, Inc.

Product of Petroferm, Inc.

Product of Union Carbide Corp.

Product of Litton Systems, Inc.

Figure 8

Consideration must be given to toxicity and other safety requirements recommended by the solvent

manufacturer. Trichloroethylene and Methylene Chloride can be used with no harmful affect to the connectors;

however, Tyco Electronics does not recommend them because of the harmful occupational and environmental effects.

Both are carcinogenic (cancer-causing) and Trichloroethylene is harmful to the earth's ozone layer.

NOTE

CAUTION

DANGER

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If you have a particular solvent that is not listed, contact the Product Information number at the bottom of page 1.

E. Drying

Air drying of cleaned connectors is recommended. Temperature for the connectors should not exceed –40

to 105

C [–40 to 221

F]. Degradation of the housings could result from extreme temperatures.

3.8. Repair

Damaged wires can be removed from screw clamp connectors and replaced. If a post in a header is damaged,

it can not be repaired; the solder must be removed and the header must be replaced with a new one.

4. QUALIFICATIONS

Terminal Block Stacking Connectors are Recognized by Underwriters Laboratories Inc. (UL) in File Number

E66717 and certified to CSA International in File LR7189. The Istituto Italiano del Marchio di Qualita (IMQ)

certificates these products to IEC 998–1 and 998–2–1.

5. TOOLING

The only tooling required to attach the wire to these connectors is a flat–bladed screwdriver 785730–[ ]. Refer

to Figure 4 for specific usage.

NOTE

Terminal Block Stacking Connectors 114-20079

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6. VISUAL AID

Figure 9 shows typical application of Terminal Block Stacking Connectors and calls out the conditions that

production personnel should check to ensure a good installation. For dimensional inspection, refer to the

details in the preceding pages of this specification.

FIGURE 9. VISUAL AID

SCREWS MUST

BE TIGHTENED

AND WIRES HELD

SECURELY

WIRES MUST BE

FULLY INSERTED

AND SECURED

IN CONNECTOR

THERE MAY BE SOME

DISCOLORATION BUT NO

CRACKS ARE PERMITTED

IN THE HOUSING

CONNECTORS MUST

BE BOTTOMED IN

HEADER

RETENTION LATCH MUST

LOCK ONTO HEADER

HEADERS MUST

BE SEATED ON

PC BOARD