Spring Force

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.

Example of Mounting Configuration

The M035-14 series probes are designed for 0.35mm 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. The Interface Plunger is typically compressed and fixed at approximately .010 [.250].

Begin Building Part Number

NOTE: H has already been selected for you as the default tube material.

			Current Rating¹
Letter	Material	Average Resistance	SS @ 120°C
H	Phosphor Bronze/precious metal ID/OD	< 200 milliohms	1.6 Amps

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

Letter	Spring Force	Preload	@0.034 [.86] Stroke	Material/Finish	Cycle Life @ 0.034 [.86] Stroke
S	Standard	.28 [7.8g/0.08N]	.88 [25g/0.25N]	MW	100,000

Standard Option

Letter	Description
	Heat treated steel/plated gold over nickel (standard option for this series)

You may add your Part Number to your Order.

¹Current Rating is affected by spring material and lubrication choice. MW springs and lubrication both have a 120°C operating temperature limit. Use SS springs with no lubrication (-N) for testing up to 204°C. Before using probes near these limits, please refer to Current Carrying Capacity and Operating Temperature Application Notes.

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

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