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Standard Probe Tips / Needles

Contacting a trace on a PCB or a (Semiconductor)Substrate does not always require ultimate mechanical precision or superb electrical performance. Sometimes it is footprint or simply budget governing the situation.

Here is a list of standard probe tips/needles:

Probe Tip Model

Description

SE-T

Tungsten, 5 um tip, 25mil shank

SE-TZ

Tungsten, 5 um tip, 25mil shank, “Z” shape

SE-TL

Tungsten, 5 um tip, 25mil shank, 2" long

SE-TB

Tungsten, 25 um tip, 25mil shank

SE-20T

Tungsten, 3.5 um tip, 20mil shank

SE-20TZ

Tungsten, 3.5 um tip, 20mil shank, “Z” shape

SE-20TL

Tungsten, 3.5 um tip, 20mil shank, 2" long

SE-20TB

Tungsten, 20 um tip, 20mil shank

SE-10T

Tungsten, 1 um tip, 10mil shank

SE-10TZ

Tungsten, 1 um tip, 10mil shank, “Z” shape

SE-TD

Tungsten, 3.5 um tip, 20mil copper shank, 1.3 long

SE-S

Steel, 12 um tip, 25mil shank

SE-SC

Steel ultrasonic cutter tip, 12 um tip, 0.5" long

SE-TC

Tungsten Carbide,12 um tip, 25mil shank

SE-TG

Gold plated Tungsten,10um tip, 20 mil shank

SE-O

Osmium, 12um tip, 25mil shank

SE-P

Palladium, 12um tip, 25mil shank

SE-SM

Tungsten catwhisker, 1 um tip, 20mil shank, 2" long

SE-SMS

Tungsten catwhisker, 0.2 um tip, 20mil shank, 2" long

SM-35

Tungsten, 0.7 um tip, 20mil shank, 1.2" long

SM-10

Tungsten, 0.2 um tip, 20mil shank, 1.2" long

SE-BC

Beryllium Copper, 12um tip, 25mil shank

SE-BCB

Beryllium Copper, 125um tip, 25mil shank

As a rule-of-thumb Tungsten is the most attractive probe tip/needle material. Needles are available with lots of different tip radii – ranging from very sharp (a small tip radius) to almost blunt (a very big tip radius). The tip radius determines how comfortable you can land on a specific feature (e.g. a pad or a line) and also how much current you can push into that contact.

Tungsten is quite soft and probe tips can be bent into custom shapes for example to circumvent obstacles such as microscope objectives. Tungsten Carbide on the other hand is very hard. Probe tips made of Tungsten Carbide easily scratch through the oxide on aluminum pads. Treated with care these needles last longer.

More interesting brochures:

SCA Probe Model 50 & 250 Adapter Arm for Signatone Micropositioners

SCA-50 Coaxial High-Frequency or Low-Level Siganl Probe for Signatone Micropositioners

Signatone Probe Tip Holders

Tip Bending and Probe Holder Bending


Do you have more questions concerning probe needles?

Please contact us...

Norbert Bauer
mail:
Tel.:   +49 (0) 7031 / 41 00 89-0