backed
gauges
Mounted on a flexible insulated circuit with versatile solder pads makes this device easy to install on any surface. The gauge and gold wires are over-coated to seal out moisture and to provide additional protection of the gauge during the application process.
Customizable
We can put any gauge on our list on our backings. We can adapt the membrane size to your requirements.
Performance/Foil Gauge Substitute
The sensitivity is 50 to 75 times greater than a foil gauge. We can provide backed gauges with the same resistances as common foil gauge solutions (120 Ω or 350 Ω). A load producing a change of 3 mV on a conventional foil gauge will generate at least 150 mV on a backed half bridge.
Range
Up to 9000 µm/m (ppm), linear until very high strain.
High electrical resistance / IoT
We can produce backed gauges to fit your IoT monitored part application using high resistivity materials for the gauges. Devices with 10 – 50 kΩ are possible and will consume very little energy.
Flexible
Flexible enough to bend around a 12 mm (0.5 inch) diameter rod. Contact us if you require a smaller radius.
Linearity & Stability
On load cells and foil bridges our gauges can be used as a linearity corrector. A non-linearity of 0.125 % FS can be corrected to less than 0.05 % of full scale. Long-term stability is not compromised.
Suggested Uses
Prototyping for proof of concept. Transient or high frequency measurements. Structural testing at areas where a high resolution is required (e.g. fatigue monitoring).
BACKED GAUGES PRODUCT CODING
Semiconductor Strain Gauge (SS) – Total Length (X) – Active Length (Y) – Nominal Resistance – Shape (blank if bar) – Backed (B)
Example: SS-080-050-500 P– U – B
Semiconductor Strain Gauge; Total Length 0.08 inch; Active Length 0.05 inch; Nominal Resistance at 25° C 500 P – Shape U – Backed
BAR SHAPED
SS-027-013-500 PB
Total Length mm (inch): 0.685 (0.027)
Active Length mm (inch): 0.330 (0.013)
Width mm (inch): 0.229 (0.009)
Lead attachment: Ball Bond
Thickness mm (inch): 0.010 (0.0004)
ELECTRICAL
Resistance, Ω @ 25°C: 540±50
Gauge Factor: 155±10
TCGF: -18%
TCR: 24%
SS-060-033-1000 PB
Total Length mm (inch): 1.524 (0.06)
Active Length mm (inch): 0.838 (0.033)
Width mm (inch): 0.203 (0.008)
Lead attachment: Welded
Thickness mm (inch): 0.010 (0.0004)
ELECTRICAL
Resistance, Ω @ 25°C: 1050±75
Gauge Factor: 155±10
TCGF: -18%
TCR: 24%
SS-080-050-345 PB
Total Length mm (inch): 2.032 (0.08)
Active Length mm (inch): 1.27 (0.05)
Width mm (inch): 0.203 (0.008)
Lead attachment: Welded
Thickness mm (inch): 0.010 (0.0004)
ELECTRICAL
Resistance, Ω @ 25°C: 345±40
Gauge Factor: 140±10
TCGF: -13%
TCR: 16%
SS-090-060-500 PB
Total Length mm (inch): 2.286 (0.09)
Active Length mm (inch): 1.524 (0.06)
Width mm (inch): 0.203 (0.008)
Lead attachment: Welded
Thickness mm (inch): 0.010 (0.0004)
ELECTRICAL
Resistance, Ω @ 25°C: 540±50
Gauge Factor: 140±10
TCGF: -13%
TCR: 16%
SS-150-124-25 PB
Total Length mm (inch): 3.81 (0.15)
Active Length mm (inch): 3.149 (0.124)
Width mm (inch): 0.203 (0.008)
Lead attachment: Welded
Thickness mm (inch): 0.023 (0.0009)
ELECTRICAL
Resistance, Ω @ 25°C: 25±3
Gauge Factor: 100±10
TCGF: -10%
TCR: 6%
SS-250-225-120 PB
Total Length mm (inch): 6.35 (0.25)
Active Length mm (inch): 5.715 (0.225)
Width mm (inch): 0.229 (0.009)
Lead attachment: Welded
Thickness mm (inch): 0.010 (0.0004)
ELECTRICAL
Resistance, Ω @ 25°C: 120±20
Gauge Factor: 100±10
TCGF: -10%
TCR: 6%
SS-037-022-500 PB
Total Length mm (inch): 0.939 (0,37)
Active Length mm (inch): 0.559 (0.022)
Width mm (inch): 0.229 (0.009)
Lead attachment: Ball Bond
Thickness mm (inch): 0.010 (0.0004)
ELECTRICAL
Resistance, Ω @ 25°C: 540±50
Gauge Factor: 150±10
TCGF: -13%
TCR: 17%
SS-080-050-120 PB
Total Length mm (inch): 2.032 (0.08)
Active Length mm (inch): 1.27 (0.05)
Width mm (inch): 0.203 (0.008)
Lead attachment: Welded
Thickness mm (inch): 0.010 (0.0004)
ELECTRICAL
Resistance, Ω @ 25°C: 120±20
Gauge Factor: 120±10
TCGF: -9%
TCR: 5%
SS-080-050-500 PB
Total Length mm (inch): 2.032 (0.08)
Active Length mm (inch): 1.27 (0.05)
Width mm (inch): 0.203 (0.008)
Lead attachment: Welded
Thickness mm (inch): 0.010 (0.0004)
ELECTRICAL
Resistance, Ω @ 25°C: 540±50
Gauge Factor: 140±10
TCGF: -13%
TCR: 16%
SS-090-060-1150 PB
Total Length mm (inch): 2.286 (0.09)
Active Length mm (inch): 1.524 (0.06)
Width mm (inch): 0.203 (0.008)
Lead attachment: Welded
Thickness mm (inch): 0.010 (0.0004)
ELECTRICAL
Resistance, Ω @ 25°C: 1125±75
Gauge Factor: 155±10
TCGF: -18%
TCR: 24%
SS-150-124-30 PB
Total Length mm (inch): 3.81 (0.15)
Active Length mm (inch): 3.149 (0.124)
Width mm (inch): 0.203 (0.008)
Lead attachment: Welded
Thickness mm (inch): 0.020 (0.0008)
ELECTRICAL
Resistance, Ω @ 25°C: 30±3
Gauge Factor: 100±10
TCGF: -10%
TCR: 6%
SS-060-033-500 PB
Total Length mm (inch): 1.524 (0.06)
Active Length mm (inch): 0.838 (0.033)
Width mm (inch): 0.203 (0.008)
Lead attachment: Welded
Thickness mm (inch): 0.010 (0.0004)
ELECTRICAL
Resistance, Ω @ 25°C: 540±50
Gauge Factor: 140±10
TCGF: -13%
TCR: 15%
SS-080-050-230 PB
Total Length mm (inch): 2.032 (0.08)
Active Length mm (inch): 1.27 (0.05)
Width mm (inch): 0.203 (0.008)
Lead attachment: Welded
Thickness mm (inch): 0.010 (0.0004)
ELECTRICAL
Resistance, Ω @ 25°C: 230±30
Gauge Factor: 120±10
TCGF: -9%
TCR: 5%
SS-080-050-1000 PB
Total Length mm (inch): 2.032 (0.08)
Active Length mm (inch): 1.27 (0.05)
Width mm (inch): 0.203 (0.008)
Lead attachment: Welded
Thickness mm (inch): 0.010 (0.0004)
ELECTRICAL
Resistance, Ω @ 25°C: 1050±75
Gauge Factor: 155±10
TCGF: -18%
TCR: 24%
SS-150-124-15 PB
Total Length mm (inch): 3.81 (0.15)
Active Length mm (inch): 3.149 (0.124)
Width mm (inch): 0.203 (0.008)
Lead attachment: Welded
Thickness mm (inch): 0.025 (0.001)
ELECTRICAL
Resistance, Ω @ 25°C: 15±2
Gauge Factor: 100±10
TCGF: -10%
TCR: 6%
SS-150-124-40 PB
Total Length mm (inch): 3.81 (0.15)
Active Length mm (inch): 3.149 (0.124)
Width mm (inch): 0.203 (0.008)
Lead attachment: Welded
Thickness mm (inch): 0.018 (0.0007)
ELECTRICAL
Resistance, Ω @ 25°C: 40±4
Gauge Factor: 100±10
TCGF: -10%
TCR: 6%
U SHAPED
SS-037-022-500 PUB
Total Length mm (inch): 0.939 (0.037)
Active Length mm (inch): 0.559 (0.022)
Width mm (inch): 0.406 (0.016)
Lead attachment: Welded
Thickness mm (inch): 0.010 (0.0004)
ELECTRICAL
Resistance, Ω @ 25°C: 540±50
Gauge Factor: 150±10
TCGF: -13%
TCR: 17%
SS-060-033-300 PUB
Total Length mm (inch): 1.524 (0.06)
Active Length mm (inch): 0.838 (0.033)
Width mm (inch): 0.406 (0.016)
Lead attachment: Welded
Thickness mm (inch): 0.010 (0.0004)
ELECTRICAL
Resistance, Ω @ 25°C: 325±40
Gauge Factor: 100±10
TCGF: -10%
TCR: 6%
SS-080-050-10000 PUB
Total Length mm (inch): 2.032 (0.08)
Active Length mm (inch): 1.27 (0.05)
Width mm (inch): 0.33 (0.013)
Lead attachment: Welded
Thickness mm (inch): 0.010 (0.0004)
ELECTRICAL
Resistance, Ω @ 25°C: 10000±1000
Gauge Factor: 175±10
TCGF: -23%
TCR: 42%
SS-047-025-500 PUB
Total Length mm (inch): 1.194 (0.047)
Active Length mm (inch): 0.635 (0.025)
Width mm (inch): 0.406 (0.016)
Lead attachment: Welded
Thickness mm (inch): 0.010 (0.0004)
ELECTRICAL
Resistance, Ω @ 25°C: 540±50
Gauge Factor: 140±10
TCGF: -13%
TCR: 16%
SS-060-033-500 PUB
Total Length mm (inch): 1.524 (0.06)
Active Length mm (inch): 0.838 (0.033)
Width mm (inch): 0.406 (0.016)
Lead attachment: Welded
Thickness mm (inch): 0.010 (0.0004)
ELECTRICAL
Resistance, Ω @ 25°C: 540±50
Gauge Factor: 140±10
TCGF: -12%
TCR: 14%
SS-095-060-350 PUB
Total Length mm (inch): 2.413 (0.095)
Active Length mm (inch): 1.524 (0.06)
Width mm (inch): 0.406 (0.016)
Lead attachment: Welded
Thickness mm (inch): 0.010 (0.0004)
ELECTRICAL
Resistance, Ω @ 25°C: 350±50
Gauge Factor: 120±10
TCGF: -9%
TCR: 5%
SS-047-025-1000 PUB
Total Length mm (inch): 1.194 (0.047)
Active Length mm (inch): 0.635 (0.025)
Width mm (inch): 0.406 (0.016)
Lead attachment: Welded
Thickness mm (inch): 0.010 (0.0004)
ELECTRICAL
Resistance, Ω @ 25°C: 1000±100
Gauge Factor: 160±10
TCGF: -20%
TCR: 28%
SS-060-033-2000 PUB
Total Length mm (inch): 1.524 (0.06)
Active Length mm (inch): 0.838 (0.033)
Width mm (inch): 0.406 (0.016)
Lead attachment: Welded
Thickness mm (inch): 0.010 (0.0004)
ELECTRICAL
Resistance, Ω @ 25°C: 2000±100
Gauge Factor: 155±10
TCGF: -18%
TCR: 24%
M SHAPED
SS-060-040-2500 PMB
Total Length mm (inch): 1.524 (0.06)
Active Length mm (inch): 1.016 (0.04)
Width mm (inch): 0.813 (0.032)
Lead attachment: Welded
Thickness mm (inch): 0.010 (0.0004)
ELECTRICAL
Resistance, Ω @ 25°C: 2500±150
Gauge Factor: 140±10
TCGF: -13%
TCR: 17%
BACKING MEMBRANE
| Backing material | FR-4 semi flex |
| Thickness | 0.08 mm |
| Temperature rating |
125°C |
| Electrical Trace Material |
1 Oz Copper/Tin (top side only) |
THE MEMBRANE SIZE CAN BE CUSTOMISED OR REDUCED TO LESS THAN 2 mm
STANDARD GAUGE SPECIFICATION
| Materials | Doped Silicon, single crystal |
| Operating strain | +/- 3000 µm/m (standard); +/- 9000 µm/m (special) |
| Linearity | better than +/- 0.25% to 600 µm/m; better than 1.5% to 1500 µm/m |
| Operating temperature | 260°C (standard) |
IF YOU USE MORE THAN ONE GAUGE IN COMBINATION, MINIMIZE THERMAL IMBALANCE AND DRIFT BY SELECTING SETS OF THERMALLY MATCHED GAUGES
STANDARD MATCHING
| Temperature | % of base resistance |
| -18°C | +/- 0.6% |
| 25°C | +/- 0.4% |
| 135°C | +/- 0.4% |
MIL SPEC MATCHING TO TIGHTER TOLERANCE AND ADDITIONAL TEMPERATURE POINTS AVAILABLE
S1 - Single gauge
S2 - Matched set of 2 gauges
