The document describes LOUPOT EON 0.6 mm compliant press-fit technology for solderless interconnects. It defines the press-fit terminal dimensions and insertion rules, and specifies the printed circuit board requirements. It also summarizes the technology's electrical and mechanical characteristics such as low contact resistance, push-in/out forces, replacement capability, and passes climatic/vibration tests.

1. LOUPOT EON 0.6 mm compliant Press-Fit
Eye Of the Needle - Solderless Interconnect Technology
Copyright © – LOUPOT SAS – 07/2013 – 9 1/6
LOUPOT EON compliant Press-Fit is qualified following the IEC60352-
5 requirements.
The definition of the terminal and PCB are described on the two below
tables.
1. Press-Fit definition
2. PCB definition
3. Press-Fit insertion rules
2.5mm: distance from the through hole center without any component top and bottom side
Raw material Bronze CuSn6P R560
Thickness (mm) 0.63 +/- 0.03
Surface treatment
Post-tin Sn 100% 0.8 to 2µ maxi
underlayer : Ni 1 to 2 µ mini
ID IMDS 16280
Requirements for printed board
(according to IEC60352-5)
Diameter of the hole prior to plating
(mm)
025.015.1 
Diameter of the finished
plated-through hole (mm)
09.0
06.000.1 

PCB Thickness (mm) 1.6
Copper thickness (µm) ≥ 30
Plating qualified
Chemical Sn, Chemical
Ni/Au & immersion Ag

2. LOUPOT EON 0.6 mm compliant Press-Fit
Eye Of the Needle - Solderless Interconnect Technology
Copyright © – LOUPOT SAS – 07/2013 – 9 2/6
4. Electrical properties
4.1. Contact resistance
Test for all PCB plating:
4.2. Derating Curve
Contact resistance measure after
temperature stabilization of 10 min.
4.3. Current
Maximum current allowed: 10 A
Temp(10 A) = + 25°C (at ambient Temp)
H1
(mm)
R max
(mΩ)
Rmin
(mΩ)
Average
(mΩ)
0.75 1.38 1.22 1.31
1.15 1.36 1.51 1.43

3. LOUPOT EON 0.6 mm compliant Press-Fit
Eye Of the Needle - Solderless Interconnect Technology
Copyright © – LOUPOT SAS – 07/2013 – 9 3/6
5. Mechanical characteristics
5.1. Max push-In Force
The maximum insertion force is characterized
for each PCB plating in the finished plated-
through hole tolerance. The difference between
the smaller and the bigger holes is 25N.
5.2. Min push-Out Force
The minimum extraction force is characterized
for each PCB plating in the finished plated-
through hole tolerance. The minimal push-out
force is higher than 20N.

4. LOUPOT EON 0.6 mm compliant Press-Fit
Eye Of the Needle - Solderless Interconnect Technology
Copyright © – LOUPOT SAS – 07/2013 – 9 4/6
5.3. Contact Replacement
LOUPOT EON compliant Press-fit can be
replaced 2 times (3 insertions).
This operation can be realised by hand directly,
but with high precautions. Indeed, this action must
be done with an angle less than 5° around the
terminal axis and without any rotation.
5.4. Climatic and vibration test
The electrical comportment is qualified by the
variation of contact resistances, before and after
tests. This variation shall not exceed 0.50mΩ.
R (mΩ)
Thermal Shock < 0.10
Thermal Cycling < 0.40
Dry Heat < 0.40
Corrosion < 0.40
Vibration < 0.45
According to IEC60352-5

5. LOUPOT EON 0.6 mm compliant Press-Fit
Eye Of the Needle - Solderless Interconnect Technology
Copyright © – LOUPOT SAS – 07/2013 – 9 5/6
Electrical contact on all
multi-layer PCB thickness
5.5. Microsectionning
One of the most interesting points of the Pressfit Eye Of Needle technology is the low distortion of the hole.
Results IEC60352-5
a max : 50 m < 70m
b min : 24 m > 8m
Results IEC60352-5
c max : 40 m < 50 m
d : no crack No crack

6. LOUPOT EON 0.6 mm compliant Press-Fit
Eye Of the Needle - Solderless Interconnect Technology
Copyright © – LOUPOT SAS – 07/2013 – 9 6/6
6. Press-fit insertion machine
LOUPOT has a full range of automatic and semi-automatic machines to
insert these kinds of contacts.
LOUPOT EON compliant Press-Fit could be delivered in strip or in loose
form.
These Press-fit terminals are also able to be overmoulded or inserted in
a plastic body to get a complete connector.
7. Applications