1
Positronic’s
Blue
Connectors are
Green
POSITRONIC INDUSTRIES, INC.
423 N Campbell Avenue
PO Box 8247
Springfield, MO 65801
Toll Free (800) 6414054
Tel (417) 8662322
Fax (417) 8664115
info@connectpositronic.com
Energy has become an area of focus for governments, private industry, and citizens.
Enhanced methods of producing energy from traditional sources, development of
new energy sources and conservation of energy from all sources have become more
crucial than ever before.
Across the world, a vast amount of energy is consumed by the electronic equipment
which we all rely upon in our daily lives. An unavoidable waste of energy occurs
when power is distributed throughout electronic equipment. As electrical current
flows through conductors and connectors, unwanted heat is generated in propor-
tion to the amount of electrical resistance encountered.
Lowering resistance in connector contacts and conductors will reduce the amount
of heat generated, and result in less lost or wasted energy. Additional energy will
be saved as cooling systems will have less heat to draw out of the equipment.
E
nergy is essential to everyone. Often we do not give thought to
where energy comes from or how much we consume until energy is
not readily available.
POSITRONIC INDUSTRIES, S.A.S.
Zone Industrielle d’Engachies
46 Route d’Engachies
France 32020 Auch Cedex
Telephone 33 5 62 63 44 91
Fax 33 5 62 63 51 17
contact@connectpositronic.com
In the past, the primary metric for power connectors has been contact current ratings.
In the future, contact resistance may become equally important. While it is true that
contact resistance and contact current ratings are closely associated, contact current
ratings cannot be used to quantify the energy consumed by contacts.
Current ratings are based on the temperature rise of a connector or contact at a
specific current level. A connector design or test method allowing relatively rapid
heat dissipation may yield a reasonable temperature rise, while a relatively high
amount of energy is still being wasted.
Within the connector industry, there are a variety of test methods used to quantify
a particular performance metric. Different test methods can yield different values
for the same metric. This lack of uniformity can be confusing to connector users
who are trying to compare connectors offered by various manufacturers. Third
party assessment can give connector users a common point of reference when
making connector choices.
Contact resistance is used by
UL Environment
as the metric to determine the
relative efficiency of connector contacts.
UL Environment
offers independent third
party assessment and verification of claims made by manufacturers.
POSITRONIC ASIA PTE LTD.
3014A Ubi Road 1 #0701
Singapore 408703
Telephone (65) 6842 1419
Fax (65) 6842 1421
singapore@connectpositronic.com
wp_posibluergreen_ul_revNC_2/10
www.connectpositronic.com
2
Once assessments are made,
UL Environment
issues an Environmental Claims
Validated (ECV) Mark, in this case contact resistance. The ECV will aid power connector
users in evaluating contact efficiency as it relates to energy consumption. Visit
www.ulenvi-
ronment.com
for more information.
As an example, recently an ECV was presented to
Positronic
by
UL Environment.
The ECV
lists the average contact resistance for
Positronic’s
VPB series size 16 power contacts at less
than one milliohm each. This low contact resistance is achieved by use of high conductivity
contact materials. In addition,
Positronic’s
Large Surface Area (LSA) contact system is utilized
as the interface between male and female power contacts in VPB series connectors.
The VPB series was designed for use as the Zone 1 power connector in AdvancedTCA
(ATCA) telecommunication computing systems. Zone 1 connectors provide power from
backplanes to front boards in ATCA chassis. The low contact resistance of
Positronic’s
VPB
series provides energy savings opportunities in any application using this connector.
The following formula verifies the energy savings of a lower resistance contact at a given
current:
Power Consumption (Watts) = Current Flow
2
(Amperes
2
) X Contact Resistance (Ohms)
Contact resistance has a one-to-one effect on power consumption. If, the contact resistance
is reduced by half, the power consumption is reduced by half.
Low resistance power contacts also provide benefits in systems sensitive to voltage drop.
This is demonstrated in the following formula:
Voltage drop across contact pairs =
Current Flow (Amperes) X Contact Resistance (Ohms).
Once again, contact resistance
has a one-to-one effect. Reducing the contact resistance by half reduces voltage drop by half.
Higher energy costs and government legislation will cause energy conservation efforts to
continue to intensify. If we consider the vast numbers of power contacts in electronic
equipment around the world, it is clear how lower contact resistance can play a role in meeting
energy conservation goals.
Positronic
utilizes high
1/AA
conductivity contact materials and unique contact
F9300A
PB30W8
V
interfaces to provide low contact resistance in our
power connector products. To learn more about
these products, visit
connectpositronic.com.
POSITRONIC INDUSTRIES, INC.
423 N Campbell Avenue
PO Box 8247
Springfield, MO 65801
Toll Free (800) 6414054
Tel (417) 8662322
Fax (417) 8664115
info@connectpositronic.com
POSITRONIC INDUSTRIES, S.A.S.
Zone Industrielle d’Engachies
46 Route d’Engachies
France 32020 Auch Cedex
Telephone 33 5 62 63 44 91
Fax 33 5 62 63 51 17
contact@connectpositronic.com
POSITRONIC ASIA PTE LTD.
3014A Ubi Road 1 #0701
Singapore 408703
Telephone (65) 6842 1419
Fax (65) 6842 1421
singapore@connectpositronic.com
VPB30W
8M6200A
1/AA
VPB Series ECV
Mark
wp_posibluergreen_ul_revNC_2/10
www.connectpositronic.com
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