| Date: | 2019/10/04 |
| Author: | Alexandre van BERGEN |
April 2019 - PCBA and test patterns are getting smaller and smaller, as an anwer to this demand TEST-OK has designed a probe wich can be used up to 1,27 mm pitch. Also a receptacle has been developed, based on the TEST-OK principle of soldering into the Connector Board.
Difference with other TEST-OK test probes, and most industry test probes, is the fact that the receptacle is the guiding part for the moving probe. This means that diameters could be reduced.
The probe is available in different lenghts and headstyles, for test pattern contacting, and for through hole contacting. Also a version with isolation around the head is available, this type makes it possible to contact for example a 50 pins double row 1,27 mm pitch header. The isolation has a centering function and also prevents shortage between the heads.
Shortform
 | Module Materials - Probes and Receptacles | |||||
| TOK 9755 Test Probe | 1,27 mm/50 mil | |||||
| Dimensions (mm.) | ||||||
 |  | |||||
| Tecnical Data | ||||||
| Spacing | 1,27 mm / 50 mil | |||||
| Spring force at working level | 100 / 200 g | |||||
| Current rating | 3,0 A | |||||
| Typical contact resistance | 20 mOhm | |||||
| Full travel | 4,35 mm | |||||
| Recommended working travel | 2,35 mm | |||||
| Materials | ||||||
| Pin barrel | Brass – gold plated | |||||
| Pin spring | Music Wire, silver/gold plated | |||||
| Pin plunger | Hardened beryllium copper | |||||
| Lenghts | For this probe, the length is appropriate for differing situations: | |||||
| L1 = 29,7 mm | Through hole components on the UUT | |||||
| L1 = 30,8 mm | Test pads and pads of SMD components | |||||
| 30.8 mm 18.9 mm the UUT itself as well as the pads of SMD components | ||||||
