Probe Selection

QA Technology offers many combinations of probes. You can build your probe by selecting the tube style, tip style and spring force for your specific application.

If you have questions at any time during the process, contact us at (603) 926-0348.

Spring Force

Example of Mounting Configuration

The M100-75 series probes are designed for 1.00mm centers for standard and custom socket applications. Actual stroke and plate thicknesses may vary based on application.

The probe tube must be captured in the socket while the Interface Plunger remains compressed. The DUT Plunger is stroked with each actuation.

Begin Building Part Number

TUBE SELECTION

Letter	Material	Average Resistance			Current Rating AMPS¹ 120°C (204°C)³
P	Nickel silver / ID precious metal clad	< 65 milliohms			3.4 (4.7)³

NOTE: S has already been selected for you as the default spring force.

Letter	Spring Force	Preload	@ 0.86 mm Stroke	Material/Finish	Cycle Life @ 0.86mm Stroke
S	Standard	0.58 [16.38g0.16N]	2.65 [75.0g/0.74N]	SS	100,000

INTERFACE TIP STYLE

Letter	Material/Finish
3	Chisel. Heat treated BeCu/plated gold over nickel

¹ Current Rating is affected by spring material and lubrication choice. Please refer to Current Carrying Capacity and Testing in Extreme Temperature application notes for more details.

² Maximum plunger OD should be used to calculate minimum guide plate clearance holes.

³ Working Temperature Range: -45°C to 120°C with lubrication. SS springs can be used up to 204°C without lubrication.

All specifications subject to change without notice. All dimensions are in [mm]. All spring forces are oz [gm/newtons].