Test & Measurement

Surface mount terminals enhance PCB line testing

11th May 2017
Mick Elliott

The SMOX Series of surface mount test terminals for PCB assembly line testing from Oxley is now available at Aerco. The SMOX Series has a unique retention mechanism which enhances reliability through low stress contact. Two different versions are available– HT Type SMOX for use with RoHS compliant lead-free solders (high temperature) and Standard Type SMOX for use with tin solders (lower temperature).

The SMOX Series is compatible with pick and place machines for automated manufacturing processes and also available loose for hand assembly.

Featuring a specially designed socket, the SMOX Series is the only surface mount ball and socket test point currently available on the market offering easy low contact resistance and gentle detachment.

The single pole devices require a tiny minimum pad size of only 2mm, so are suitable for testing even very tightly congested PBC designs.

Highly resilient, they can be used over a temperature range of -55degC to +125degC.

The test point and socket body is manufactured from copper alloy with a gold-plated test point finish as standard, optional Palladium, silver, nickel, tin lead finishes are also available.

Other technical specifications include maximum contact resistance of 2mΩ, socket insulation resistance of 10,000MΩ.

Typical retention force is 0.2Kg (angles < 60 degrees or ± 30 degrees) off perpendicular and typical retention torque of 200gcm (angles > 30 degrees or perpendicular). Solderability exceeds the requirements of BS2011 (IEC 68) Test T and meets MIL-STD-202 Method 208.

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