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About the Company The probe heads and equipment manufactured by Jandel have been selling worldwide since 1967. The expertise of probe head manufacture incorporates more than 40 years of work in the watch and semiconductor industry, and ten years spent working for A&M Fell. The first commercially available four point probe head was designed by Jandel's managing director and a colleague during that time. The Fell probe head manufacturing facility was purchased outright by Kulicke and Soffa in the late 1960's and now carries the K&S/Microswiss trade mark. Jandel Engineering was established in 1967. Jandel greatly improved the design and manufacturing of the original four point probe head and today produces the highest quality four point probe heads available anywhere in the world. More four point probe nostalgia can be seen here. What Makes Jandel Probes so Good? Jandel Probes offer the accuracy and perfection of more than 40 years experience. Tip radii and probe spacings are checked by interferometer for certainty of accuracy. A video inspection system is used to verify tip planerity and double check radii. Spring loadings are checked by electronic force gauge. A more thorough application note about the construction of the Jandel Cylindrical probe head, most of which applies to the making of all Jandel four point probe heads, can be found here: Cylindrical Probe Application Notes Unique standard specifications include: 1) Upper and lower guides are jeweled 2) Solid tungsten carbide needles are used for superior durability and accuracy 3) Teflon insulation is used to provide minimum leakage 4) All Jandel probe heads are built by experienced engineers with a minimum of eight years intensive training. The majority of our probe builders can boast more than 15 years experience. Why are there so many different probe head characteristics and which ones should I use? A wide range of probe head characteristics, i.e., tip spacings, spring pressures, tip materials and tip radii, are necessary due to the wide range of materials that need to be probed using the four point probe technique. For example, someone wishing to measure a layer beneath an oxide might need sharp probes and strong springs to penetrate the oxide layer, whereas a very thin metallic layer may require large radius osmium alloy tipped probes and lighter springs so that they would not puncture the layer. Similarly, some spacings are designed in order to help with the maths involved in working out resistivity; someone else may require a very close tip spacing in order to fit all the probes on the sample. To determine the probe characteristics for a particular application, either contact us with the details of the probe you currently use, or if you have a new application, you can send a sample to Jandel for testing. This service is performed at no charge and will provide you with the values that were measured and will determine the best probe specs for the material probed. What model of probe should I use? Jandel has many different shaped probe heads. The best one for you depends entirely on your application and what machine (if any) you are using. Contact us with details of the probe you have now and we will let you know the best probe for you. Alternatively, if you wish to make a custom set up, we can help you to identify which probe will work best. Must I always use a sophisticated, very costly system? No. We make probes to fit all of the high cost automated machines but we also manufacture a range of modestly priced products for manual probing and measurement. Why are there so many different shapes and sizes of probe? In the early days of four point measurement, there were around six companies making them, all with different shapes. The measuring system manufacturers didn't usually make their own probe heads so they adopted one and designed their machine around it. We at Jandel have incorporated our superior mechanical design into every existing shape and electrical connector arrangement. Jandel's Terms and Conditions of Sale. Jandel's Terms and Conditions of Sale can be seen here. |
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Four-Point-Probes is a division of Bridge Technology. To request further information please call Bridge Technology at (480)
988-2256 or send e-mail to Larry Bridge at: sales@bridgetec.com |
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BRIDGE Technology is an authorized representative of JANDEL Engineering Ltd. |
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