H-Q-5-KIT CONTACT CONNECTORS, H-Q-5-KIT Datasheet - Page 13

• Manufacturer Part Number: H-Q-5-KIT
• Description: CONNECTOR KIT, TOP ENTRY, HQ5
• Manufacturer: CONTACT CONNECTORS
• Series: EPIC HBSr

Specifications of H-Q-5-KIT

• Connector Type: Rectangular
• Gender: Plug, Socket
• No. Of Contacts: 5
• No. Of Rows: 2
• Contact Gender: Male, Female
• Connector Mounting: Cable Mount
• Connector Shell Size: HQ 5
• Contact: RoHS Compliant
• Contact Termination: Crimp
• Rohs Compliant: Yes

Technical
Technisches Vorwort / Technical Considerations / Préambule technique
Contact Material Details :
The coating of the base material with a precious metal
is necessary to guarantee a long lasting and good
connection. The contacts are plated normally by gal-
vanic processes. To reach a long-lasting plating, there
are some requirements for the contact and the plating
material
Requirements on contact material:
•
•
•
Brass (copper zinc alloy) is used for it’s good mecha-
nical properties and it’s electrical conductivity. Becau-
se it is also relatively economical it has become one of
the most preferred contact materials
Requirements on contact coatings:
•
•
•
•
•
•
•
Silver or gold are the normal choice for surface coa-
ting.
•
Good dimensional stability
High corrosion resistance
Good electrical conductivity
High abrasion resistance
High hardness
Low contact resistance
High corrosion resistance
Low porosity
Good coat formation
Solderability
Silver possesses the highest electrical conductivity
of any metal and is the most cost-effective pre-
cious metal. With sulphur or sulphurous products
in the ambient air, a brownish to black oxide coa-
ting made up of silver sulphide (Ag2S) will rapidly
be formed. However, this coating will break up in
the process of mating and will be broken down by
high currents, so that the necessary electrical con-
ductivity is maintained. Passivation of the silver
surface will delay the formation of the oxide coa-
ting and will reduce the mating and unmating for-
ces.
C O N S I D E R A T I O N S
Passivation for silver
e.g. Thiol-based or by application of a thin coat
of rhodium or chromatting
Base material
brass
•
Alternative materials for surface coating:
•
•
Gold is the most tarnish resistant precious metal.
Formation of oxides and sulphides can be dis-
counted. Gold contacts are distinguished by their
low mating and unmating forces. They are mainly
used for transmission of signals with low current
and voltage values.
Nickel is normally applied as a corrosion protec-
tion and blocking layer. Furthermore, the relatively
high hardness of the Ni coating has a positive ef-
fect on wear characteristics.
Tin or Tin/Lead is one of the most frequently em-
ployed metals for contacts, especially in the auto-
motive field. As an aid to soldering, virtually all
partially coated strips in the connection area are
coated with tin or Tin/Lead. Due to the low
hardness of tin, the mating forces are very high
and this makes it unsuitable for connectors that
are designed for a high number of mating cycles.
Lining
nickel
Coating material
silver or gold
25