Roadmap« - STOCKO CONTACT GmbH & Co. KG

STOCKO CONTACT
GmbH & Co. KG
»Roadmap«
RoHS / lead-free

Roadmap
RoHS / lead-free
For some time, the market and the latest legislative directives are confronting the electrical
industries by demanding lead-free alternatives for their most important connecting technology,
soldering.
Adaptation and Implementation of
RoHS
Directive on the Restriction of the use of certain Hazardous Substances in Electrical and
Electronic Equipments
This covers also the requirement for
lead - free surfaces
Entry into force of RoHS:
01. July 2006
Extract of Article 4, paragraph 1
“Member States shall ensure that, from 1 July 2006, new electrical and electronic equipment put
on the market does not contain lead, mercury, cadmium, hexavalent chromium, polybrominated
biphenyls (PBB) or polybrominated diphenyl ethers (PBDE).”
These substances will be prohibited because of available evidence that they
cause damage to human health and the environment. The electrical industries
in particular are affected by the prohibited use of lead.
This document informs you about the strategy of STOCKO so that you can plan for the
implementation of the directive in your own company.
In defining the adaptation, we differentiate between new developments and current
product series.
2

Roadmap
RoHS / lead-free
1. New Products
All new connector products will be manufactured in lead-free terminating technology (pure
tin).
The guidelines 2002/95/EG und 2003/11/EG are kept by the flame protection means used
in the plastics.
Therefore all new connector products are RoHS conform.
This applies to all terminations such as standard soldering and SMD (surface mount
device).
The temperature range of the insulation housings for these products is such that they can
withstand the lead-free soldering process undamaged.
For the contact surface, we shall continue to use Nickel as diffusion barrier.
Pure tin will be used as surface finish.
Baths, allowing whisker-free production or only of minimal whisker formation, will be used
conforming to the latest state of technology.
The surface finish is compatible for the use of tin-lead as well as lead-free solder e. g.
SnCu, SnAg, or SnCuAg.
3

Roadmap
RoHS / lead-free
2. Current Products
2.1. Connectors with solder less terminating technology
This applies to all top parts with IDC or crimp termination, e. g. the product ranges
ECO-DOMO, ECO-TRONIC, TL 1, RFK 2 …
For the terminating surfaces, pure tin will be used as surface finish.
The guidelines 2002/95/EG und 2003/11/EG are kept by the flame protection means
used in the plastics.
These products are already compatible with RoHS.
2.2. Plug connector for the lead free soldering process*
In this category fall all bottom parts for solder termination whose insulation housings
satisfy the higher temperatures during the soldering process, for example the pin
connectors ECO-DOMO, ECO-TRONIC, TL 1, …
Dependent on the used soldering profile and the processing the suitability for this
lead free soldering process can be reduced.
The current solder versions of connectors are successively modified. The terminating
surface will be available in lead-free (pure tin). These connectors (goods in stock
being exempted) will be compatible with RoHS from the day this directive will enter
into force.
The guidelines 2002/95/EG und 2003/11/EG are kept by the flame protection means
used in the plastics.
Part numbers (customers’ part numbers) will remain unchanged.
Goods in stock will be delivered or used in exchange according to the FIFO method
(first in, first out).
For lead-free finishes, new plating instructions/works standards will be introduced
that clearly identify the date of production and establish traceability.
Old stock and new production may be supplied together during the transitional
period.
All lead-free products will be clearly labelled during this phase.
For standard solder connectors, delivery in lead-free finish will commence from the
fourth quarter of 2004.
* wave soldering to ZVEI (max. 260°C / 5 sec.)
4

Roadmap
RoHS / lead-free
2.3. Parts in bandolier form
In this category fall all receptacles and tabs either loose or in bandolier form.
The terminating surfaces will be available in pure tin.
These products are already conforming to RoHS
2.4. Customer specific products
Modifications to customer specific products will be carried out only in consultation with our
customers.
5

Roadmap
RoHS / lead-free
3. Result
All connector series will be available in lead-free condition (pure tin).
Regarding the insulation housings, basic consideration is to be given between:
- Connectors with lead-free terminating surface
- Connectors with lead-free terminating surface and increased temperature resistance
for lead-free soldering processes.
For cost and technical reasons, it is not possible to manufacture all connectors in high
temperature materials because new tools may become necessary that would not produce
the return on investment, particularly where older series are concerned. As the case may be,
other alternative soldering methods (wave, selective soldering …) will have to be applied.
As compatibility is maintained and to economize on administrative cost both at STOCKO
and STOCKO customers, part numbers of the current connector series remain unchanged.
Many insulation housings of STOCKO connectors are already designed to withstand the
higher soldering temperatures of lead-free solders up to max. 260ºC (VDE recommendation)
without restrictions.
Current connector series, whose insulation housings do not meet those requirements,
alternatives will be offered, if requested.
Please write for information. Naturally, these new versions will receive new part numbers
so that any mix-ups or mistakes are avoided.
We aim for a customer oriented implementation when the RoHS enters into force on 1 July
2006. Customer oriented means in particular to keep any technical risks down to a minimum
and in view of the current economical situation to have cost-efficient transparency.
Since mid 2004, STOCKO are successively changing the terminating technology of their
current products to “lead-free”. This is done product specific.
You will find the current position of modified products in our chart on page 8.
This chart will be updated with every additional series having been modified.
6

Roadmap
RoHS / lead-free
4. Final Remarks
Technology:
STOCKO prefer matt tin plating for the lead-free connecting technology.
The advantages of this finish compared with bright tin plating are as follows:
- improved solderability / storage life
- reduced whisker formation
Moreover, the nickel plating underneath (diffusion barrier) obligatory at STOCKO gives
additional protection.
From the first shipment of a part number in lead-free, it will always be delivered in leadfree
finish.
Cost:
It must be mentioned again that due to the limited availability of the processes cost
increases will occur during the transitional period. Permanently increased cost must be
expected as result of the use of high temperature materials.
Rising cost may also be caused because certain components cannot be manufactured
compatible for lead-free processing for technical and economical reasons.
“Hidden” cost may occur mainly due to extra administrative expenditure. Owing to this
fact and because of the compatibility of lead-free surface finishes with lead and lead-free
solders, the part numbers will remain unchanged. Naturally, connectors that will be redesigned
with a high temperature housing will receive a new part number.
Labelling:
All products will be labelled “RoHS conform, lead-free”, even on the smallest packaging
unit.
Notice:
STOCKO reserve the right to make adjustments following the latest state of technology or
requirements and due to researches and test results without notification.
7

Roadmap
RoHS / lead-free
Connector system RoHS Lead
free
Change over
ECO-TRONIC Housing X X X X
Pin connector/vertical con. X X X X
Pin connector/horizontal con. X X X X
ECO-TRONIC pro Housing X X X X
Pin connector/vertical con. X X X X
Pin connector/horizontal con. X X X X
ECO-DOMO Housing X X X X
Pin connector/TL 2 X X X -
ECO-FLEX M - X X X X
MTL 1 Housing X X X -
Pin connector/vertical con. X X X -
Pin connector/horizontal con. X X X -
TL 3 HT - X X X X
RFK 1 Housing X X X X
Pin connector/vertical con X X X X
Pin connector/horizontal con. X X X X
RFK 2 Housing X X X X
Pin connector/vertical con X X X X
Pin connector/horizontal con. X X X X
MGF 9000, 9100 X X X X
Serie 80000 Housing X X X -
Pin connector X X X -
Serie 4400 Pin connector X X X X
RGTX Housing – MKF 2800 X X X X
Pin connector – MKS 2820 X X X X
Solderles Terminals RSQ / RSY X X X -
Crimp contacts - X X X -
Edition 2 / 2010
„No
flame”
8

STOCKO CONTACT
GmbH & Co. KG
Simonshöfchen 31
D-42327 Wuppertal
Tel. ++49 (0)202 / 97 33 - 0
Fax ++49 (0)202 / 97 33 - 411
e-mail info@stocko-contact.de
Internet www .stocko.de
A Member of the Wieland Group
Wuppertal / Deutschland
Andlau / Frankreich
Hellenthal / Deutschland
Printed in Germany 2 / 10