Strain Gages For PCB Testing
Strain gauges for PCB testing are used for measuring various mechanical properties of PCBs in computers, instrumentation, digital products, household appliances, control devices, aviation quantitative assessment and identification. Use of these miniature strain gages helps to check and prevent various possible failure problems (such as BGA chip installation, circuit board installation stress, mechanical vibration, solder joint health monitoring, etc. ). These strain gages fully comply with IPC / JEDEC-9704 «Printed circuit board strain test guide» standard requirements.
Parameters
| Performance parameters | Resistance range | Sensitive grid barrier resistance | Operating temperature | Sensitivity coefficient | Strain limit |
|---|---|---|---|---|---|
| Performance Index | Nominal value ±1Ω | ±1Ω | -30℃ ~+80℃ | 2.1±0.1 | 2.0% |
Configuration
| Strain gage configuration | Designation | Sensitive grid dimensions, L x W, mm | Backing dimensions, L x W, mm |
|---|---|---|---|
 | ZF120-05CA (13) | 0.7×0.5 | 2.5×2.5 |
 | BF120-1CB (13) | 1.0×1.0 | 5.7×5.7 |
| BF120-1.5CB (13) | 1.5×1.5 | 5.3×5.3 | |
| ZF350-1.5CB (13) | 1.5×1.5 | 5.3×5.3 | |
| BF350-2CB(13) | 2.0×2.0 | 7.5×7.5 | |
 | BF120-1CB-A (13) | 1.2×1.0 | 4.0×4.0 |
