Foil Strain Gages for Printed Boards
PCB are used for varieties of products including cellular phones, car navigation systems and digital cameras.
The gages are the self-temperature-compensation gages (SELCOM gages) for evaluating them.
∙ Dimensions of gage base (bondable space to mounted components and narrow parts)
1.2 mm long by 1.1 mm wide (uniaxial), 2.5 mm long by 2.5 mm wide (biaxial or triaxial)
∙ Linear expansion coefficient of 13 x 10-6/ºC, suitable for component-mounted board
∙ Self-temperature-compensation range is made as wide as –30 to 120ºC to satisfy thermal cyclic tests of PCB.
|Materials Resistive element||NiCr alloy foil|
|Operating temperature in combination with major adhesives after curing (°C)||CC-33A: -196 to 120ºC
CC-36: -30 to 100ºC
PC-600: -196 to 150ºC
|Operating temperature in combination with major leadwire cables (°C)||Polyester-coated copper wire: -196 to 150ºC
Vinyl-coated flat cable (L-6, L-7): -10 to 80ºC
Mid-temperature cable (L-11, L-12): -100 to 150ºC
|Self-temperature-compensation (°C)||-30 to 120ºC|
|Applicable linear expansion coefficients (×10-6/℃)||13|
|Strain limits at normal temp. (approx. %)||1.6|
|Fatigue lives at normal temp. (times)||2x106 (±1500μm/m)|
When ordering, suffix the lead-wire cable code to the model number with a space in between.
For the gage with 3 polyester-coated copper wires 10-cm long pre-attached
→ KFRS-02-120-C1-13 N10C3
For the gage with a vinyl-coated ﬂat 3-wire cable 5 m long pre-attached
→ KFRS-05-120-D35-13 L5M3S
For details, please refer to the [Strain Gages with Pre-attached Lead Cables]