156-25 Series | .156 [3.96] Centers | .250 [6.35] Full Stroke

Designed for high current testing.

 

156mil 250 Stroke probes for high current testing

Spring Force

spring force chart

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.



 
P/N 156-PR
25
-
Cart

Begin building your part number.

Select your tube material.
Letter Material Average Resistance     Current Rating1
SS @ 204°C
 H High conductivity proprietary alloy/gold plated < 10 milliohms     43 Amps
S High conductivity proprietary alloy/silver plated < 10 milliohms     47 Amps
N Nickel silver/no flinish <  15 milliohms     22 Amps
Select your tip style. Standard material is heat-treated BeCu/plated gold over nickel.
Use the drop-down menu at right to filter your choices by target type.
Select your spring force.
Letter Spring Force Preload @ 2/3 Stroke Material Cycle Life @ Stroke
 S Standard 2.2 [62] 6.0 [170] SS 1M @ .167 [4.24]
 H High 3.6 [102] 10.0 [283] SS 1M @ .167 [4.24]
 Y Elevated 5.8 [164] 16.0 [454] SS 1M @ .167 [4.24]
Select your option (if required).
Letter Description - no options are required.
 N No probe lubrication. Removing probe lubrication greatly reduces cycle life and should only be used in applications requiring operating temperatures below -45°C.
 

1Current Rating is affected by spring material and lubrication choices. Standard lubrication has a 204°C maximum operating temperature limit.
Before using probes near these current limits, please refer to Current Carrying Capacity and Operating Temperature Application Notes.

All specifications subject to change without notice. All dimensions are in [mm]. All spring forces are oz [gm]. US Patent No. 4,885,533