Machined pin receptacles are commonly used electrical components that provide reliable connections in electronic equipment. They have a two-piece construction of a brass alloy sleeve and a beryllium copper contact clip that provides multiple contact points and a gas-tight connection. This design delivers superior performance over long periods of exposure to shock, vibration and environmental changes. Machined pin receptacles are used widely in applications such as cables, medical devices, military, aerospace and automotive industries.

1. RECEPTACLE PINS

2. WHAT ARE RECEPTACLE PINS?
• The basic component used for making electrical connections in a
wide array of electronic equipment is the pin receptacle.
• Sometimes referred to as PCB sockets, micro-plugs or connector
jacks, machined pin receptacles are known for their reliability and
versatility.
• Machined pin receptacles are fitted with an internal beryllium
copper contact which allows them to have a wide mating lead
acceptance range.
• These contacts maintain their normal and characteristic forces even
after extended exposure to shock, vibration, and environmental
changes.

3. WHY MACHINED PIN RECEPTACLES?
• A machined pin receptacle – fitted with a stamped, multi-finger
contact that provides an interface with redundant points of contact
and a gas-tight connection – delivers vastly superior performance.
• Multi-finger contact clips are superior to stamped pin wiping
connector blades because they provide multiple points of contact to
the mating pin, resulting in providing better power and force
distribution.
• These contacts maintain their normal and characteristic forces even
after extended exposure to shock, vibration, and environmental
changes.
• They will function reliably to a minimum of 1,000 insertion/extraction
cycles and usually many more depending upon mating pin size, shape
and finish.
• Two-piece receptacle construction (shell and contact clip) allows for
cost-efficient plating combinations.

4. CONSTRUCTION:
• Machined pins are made with two-piece
construction Shell(Sleeve) and Clip.
• Shell or sleeve is made of brass alloy 360 ½ hard,
an alloy known for its strength, conductive, and
thermal properties.
• Inside every receptacle shell(sleeve) there is a
contact clip. A contact clip is a conductive, multi-
finger, made from progressive die stamping.
• The standard material of contact clips is beryllium
copper which is suitable for applications
operating in a constant temperature environment
under 150° C.

5. PLATING:
• Sleeves are typically tin plated to meet ROHS requirement’s. Clip can
be tin plated or gold plated which are ROHS compliant for indoor use
at normal temperatures or Air-Conditioned environment.
• In case of harsh environment or for industrial use clip is gold plated
with higher gold thickness.
• Both sleeves and clips normally have nickel undercoat to prevent zinc
from migrating to top which can create intermetallic compounds
making pins difficult to solder.

6. ADVANTAGES:
• Reliability and versatility.
• Delivers vastly superior performance.
• Provisions for future field device upgradeability.
• Low contact resistance.
• Gas tight connection and mating interface.
• High mechanical life without degradation of
insertion/withdrawal force.
• Excellent performance under shock & vibration.
• Allows for cost-efficient plating combinations.

7. APPLICATIONS:
• Used for making electrical connections in a wide array of electronic
equipment.
• Used discretely or in connector arrays.
• For manufacturing, medical cables and interconnects.
• For military applications.
• For aerospace applications.
• In automotive industries.
Note: We can make Receptacles as per your
design.

8. • Author Nalin P. Sheth, MBA Harvard, is Managing Director of Champion
Electronics Pvt. Ltd., Pune, 411026, India.
• Champion Electronics is serving electronics industry all over the world
from 1975.
• Contact Details:
• Email: sales@champelec.com
• Ph: +91-8928502180.
• Website: www.champelec.com