Contact probe
Product name | Contact Probes - NP90SF, NP90 Series |
Part number | NP90-A |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
For checking electrical conductivity of workpiece. Contact tip shape depends on the test subject.
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Risk info.
Wire breakage, deformation
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Available sizes
■Contact probe (Min. mounting pitch 3.5mm)
Part name | Material | Surface treatment |
Plunger | C1730B | Nickel base rhodium plated |
Barrel | Brass | Nickel base gold plated |
Spring | Carbon Steel | Gold plating |
Ball | 52100 Bearing Steel | Gold plating |
■Tip shape
Tip shape | Min. mounting pitch | Full stroke | Initial spring pressure |
A | 4.5 | 6.4 | 10gf、40gf、146gf |
B | 3.5 |
C |
D | 4.5 |
E | 3.5 |
G |
AS |
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Performance info.
■Contact probe (Min. mounting pitch 3.5mm) load info.
Spring pressure | Allowable current | Resistance | Replacement cycle |
Initial | 2/3 stroke |
10gf | 50gf | 1.5A | 80mΩ | 300,000 cycles |
40gf | 150gf |
146gf | 250gf |
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IDEA NOTE Two loading tables equalizes tact time
Electrical property inspections take longer than loading and positioning of workpiece. This app. example shows two process tables where workpieces can be loaded alternatively, with moving probe board, equalizing the cycle time.