Introduction of miniature planar rosette strain gage pattern for PCB testing

Micro-Measurements has announced the global market introduction of its S5198, a miniature rectangular planar rosette strain gage pattern for PCB testing, incorporating Advanced Sensors Technology. Offered in two unique strain gage designations, the S5198 pattern provides precise strain detection with minimized non-uniform PCA strain gradient effects, along with reliable operation to +200C. An industry best-in-class resistance specification of 350ohm, as compared to the 120ohm typical industry standard, reduces the unwanted self-heating and heat dissipation effects commonly found among substrates with poor heat conductivity, such as PCBs. A reduced overall footprint, with grid length of just 0.36mm, facilitates ease of target board placement and integration. The pattern is further supported by pre-attached high-performance Teflon insulated flexible thin cables, consisting of three twisted wires per grid. The wires are color coded, stripped and tinned for ease of PCB wire routing and connection to data acquisition systems. In addition to PCB testing, the pattern is suitable for BGA component testing, spherical bend testing, mechanical shock testing, PCB flexures, and ICT. The S5198 is RoHS compliant and is utilized in accordance with IPC–JEDEC 9702, IPC–JEDEC 9704, and JEDEC JESD22-B111 standards.