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Haibo Sensor Foil BF350-AA linear Strain Gauge


The BF350-3AA-23-TO is a high-performance foil strain gauge engineered for design engineers and application technicians who require dependable, accurate strain measurement in demanding environments. Its precision uniaxial sensing capability makes it an ideal, off-the-shelf solution for integrating into load cells, pressure transducers, and force sensors—especially where consistent performance under varying conditions is critical.

Metal foil resistance strain gauges are the core sensing elements of various strain sensors. A foil strain gauge is a thin, flexible sensor that measures strain on an object. It consists of a metallic foil pattern mounted on a backing material. When the object deforms, the foil’s electrical resistance changes proportionally, allowing precise measurement of stress, load, or pressure.

Key Features & Advantages

  • Gauge Type: Linear/Signal Alex
  • Foil Material
  • Operating Temperature Range: -50°C to +200°C.
  • Grid Dimensions: The sensitive grid length is typically 3mm x 2mm
  • Resistance: 350 Ohms (±0.35%).

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Foil BF350-AA linear Strain Gauge

Foil Strain Gauges AA Linear Types Design Size

  1. Foil technology – High accuracy and stability

  2. Standard specs – 350Ω-2000Ω, gauge factor 2.3

  3. Polyimide base – Heat-resistant and flexible

  4. Wide applicability – For various stress tests

Foil Strain Guage BF350-3AA Datasheet

Parameter Specification
Model BF350-3AA-23-T0
Resistance 350 Ω ± 0.1%
Gage Length 3 x 2 mm (Length x Width)
Grid Size 8 x 5 mm (Length x Width)
Base Material Polyimide
Lead Type Tinned Copper Wire
Leads 3-Wire
Gage Factor 2.0 ± 1%
Thermal Output ≤ 1.5 µε/°C
Operating Temp. -30°C to +70°C