083502 ERNI Electronics, 083502 Datasheet - Page 11

• Manufacturer Part Number: 083502
• Manufacturer: ERNI Electronics
• Type: Coding Stripr

Specifications of 083502

• Operating Temp Range: -55C to 125C
• Lead Free Status / RoHS Status: Compliant

DIN 41612 / IEC 60603-2 Connectors
DIN 41612 / 60603-2 Pressfit Connectors
ERNIPRESS
In electronic and electrical equipment the solderless pressfit
technique has become more and more widespread in times of
packaging miniaturization and higher packing densities.
ERNI’s compliant pressfit zone is a reliable connection
between the PC Board and the connector.
ERNI offers a comprehensive pressfit range for all connector
types. Also included in the ERNI pressfit range are the right
angled pressfit connectors used for daughter card connectors.
The pressfit zone is designed that the contact fit in the copper
layer of the plated-through hole of a PCB. The tin plating of
the hole is penetrated. The result is a reliable gas tight and
therefore corsion-free contact with low electrical resistance.
Solderless pressfit connectors are an integral part of today’s
modern electronic packaging bus systems. The main function
of a bus system is to connect assemblies with one another
and their power supply. Since plug-in modules are becoming
more and more powerful, the demands placed on the bus
systems are continually increasing. Higher system speeds and
the overall shrinking of the connection structure are making
the bus system a more crucial part of the control system.
With newer assembly processes for PC Boards, like the
pressfit termination, the mechanism is now available to utilize
more powerful electro mechanical components.
ERNIPRESS
for such applications. Furthermore, there are many applica-
tions where the delicate structure of the PC Board cannot
withstand the harshness of automated soldering processes.
For DIN connectors ERNI has two pressfit zones in use. Both
zones require exactly the same hole specifications of the PCB.
1. EE-zone contour like a boat
2. EN-zone eye of the needle
Catalog E 074558
TM
solderless pressfit connectors are a perfect fit
TM
10/09
Edition 2
www.erni.com
Required specifications of the PCB
In manufacturing the PC Board for the pressfit technique it is
essential that the recommended DIN PC Board specifications
are met. The dimensions of the plated through drillholes and
their hole design are described in IEC 60352-5.
The quality and long-term performance of a pressfit connector
are influenced by the following factors:
a) Base material of the PCB.
b.) Adherence to drillhole tolerances.
c.) Drillhole diameter, positioning and diameter tolerances.
d.) PCB hole and layout requirements.
e.) Insertion and retention forces.
Insertion and retention forces
The design of the pressfit zone of the
connectors performs a dual function. On the one hand this
design has high elasticity and therefore can accomodate large
hole tolerances. On the other hand, the pressfit zone’s design
ensures high edge loading at the copper layer of the PCB hole
resulting in a gas-tight, corrosion-free and mechanically
secure connection.
Due to the special shape of the pressfit zone, insertion forces
are not detrimental to the hole plating.
Retention forces of the contacts in the PCB hole are
sufficient to withstand the torques which occur during wire
wrap termination. Typical average values for retention force
are between 50 – 110 N per contact depending upon PCB
thicknesses.
To meet UL requirements, epoxy glass fabric type
Hgw 2372.1 to DIN 7735, FR 4, should be used.
For optimum and uniform plating of the PCB,
a selective rack technique, flexible anode arrangement
and continuous plating bath monitoring are suggested.
Maintaining the correct roughness of the drillhole wall and
restricting drill bit travel are critical production processes.
A minimal residual ring width of 0.1 mm, finished hole
diameter tolerances, layer thicknesses, and a high quality
consistent conductive pattern are all critical.
Measurement of these forces should be checked.
ERNIPRESS
TM
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