Tungsten is the most common material used for integrated circuits with aluminum pads. It provides good wear characteristics in small shapes. Contact resistance for a typical clean tungsten probe averages 250 milliohms, which is suitable for most applications.
It should be noted that the buildup of aluminum that oxides on the probe tip can become a factor in increasing contact resistance between the probe and the test pad.
Tungsten rhenium is often used where high contact resistance becomes a problem. The addition of rhenium to the tungsten probe material helps prevent oxide buildup and stabilize the contact resistance levels.
| Type | Material | Probe | Length | Tip area | Density | Resistivity | Melting | Yield | Hardness | Modulus |
| Diameter | Range | (um) | (g/cm3) | At 20℃ | Temp | strength | Knoop | elasicity | ||
| Range(mm) | (mm) | (uΩ/cm) | (℃) | (MPa) | (GPa) | |||||
| Pure | W≥99.98% | 0.05-2.0 | 7-300 | 0.08-100 | 19.1-19.2 | ~5.65 | 3410 | 2800 | 760 | 400 |
| tungsten | ||||||||||
| Al, Si,K | W≥99.95% | 0.05-2.0 | 7-300 | 0.08-100 | 19.1-19.2 | ~5.65 | 3410 | 2800 | 760 | 400 |
| Doped | ||||||||||
| Tungsten | ||||||||||
| Rhenium | 97W3Re | 0.05-2.0 | 15-250 | 0.08-100 | 19.1-19.2 | ~9.65 | 3427 | 3360 | 780 | 410 |
| Tungsten | ||||||||||
| Paliney 7 | Pa7 | 0.3-0.8 | 15-50 | 1u-20u | 11.8 | ~31.6 | 1016 | 930 | 380 | 117 |
Our Rhenium Tungsten probes are widely used in the semiconductor industry. Including the fields of probe cards, probe stations, chip tests, wafer tests, and LED chip tests.
The tungsten probe tip, featuring nickel and gold plating, is sharpened at one end with a 10 µm tip radius. This design is ideal for applications where contact with pads or lines is necessary. Additionally, the probe’s body material possesses the strength to be bent into various shapes.
- The standard application is probing on pads and/or internal lines
- Tip material provides a good answer to probing on soft surface
- Packaged in a box of 5 tips
- TIP RADIUS — 5UM
- BODY DIAMETER — 0.63MM
- LENGTH — 32 mm
- APPLICATION — Fragile surface
- PACKAGING — 5 tips box
