Amphenol / PCB Piezotronics 353B18 ICP Accelerometer

The Amphenol / PCB Piezotronics 353B18 is a single-axis ICP accelerometer engineered for precision vibration measurement across industrial and laboratory environments. Built on a quartz shear sensing element, this compact unit delivers 10 mV/g sensitivity with ±500 g peak measurement range and exceptional frequency coverage from 0.35 Hz to 30,000 Hz (±3 dB). Its 0.005 g rms broadband resolution, sub-1% non-linearity, and ≤5% transverse sensitivity enable accurate modal analysis, fatigue testing, and structural characterization. The device operates across -54 to +121 °C with constant current excitation (2 to 20 mA) and 18 to 30 VDC supply, outputting through a 10-32 connector with 8 to 12 VDC bias. Weighing only 1.8 gm with a ≥70 kHz resonant frequency, the 353B18 handles ±10,000 g shock overloads and exhibits minimal base strain sensitivity of ≤0.003 g/µε. Optional variants include adhesive mounting, low-bias electronics (4.5 to 7.5 VDC output), and ground-isolated configuration supporting ±300 g range at reduced weight (3.0 gm).

– Technical Specifications

• Sensitivity: 10 mV/g (1.02 mV/(m/s²)), ±10% tolerance
• Measurement Range: ±500 g peak (±4905 m/s² peak)
• Frequency Response (±5%): 1 to 10,000 Hz
• Frequency Response (±10%): 0.7 to 18,000 Hz
• Frequency Response (±3 dB): 0.35 to 30,000 Hz
• Resonant Frequency: ≥70 kHz
• Broadband Resolution: 0.005 g rms (0.05 m/s² rms) over 1 to 10,000 Hz
• Non-Linearity: ≤1%
• Transverse Sensitivity: ≤5% (typically ≤3%)
• Shock Overload Limit: ±10,000 g peak
• Base Strain Sensitivity: ≤0.003 g/µε
• Operating Temperature: -65 to +250 °F (-54 to +121 °C)
• Output Impedance: ≤100 Ohm
• Spectral Noise: 2800 µg/√Hz @ 1 Hz; 700 µg/√Hz @ 10 Hz; 180 µg/√Hz @ 100 Hz

– Key Features

• Quartz shear sensing geometry for high-frequency fidelity
• Constant current excitation: 2 to 20 mA from 18 to 30 VDC supply
• 8 to 12 VDC output bias with 0.5 to 2.0 sec discharge time constant
• Miniature form factor: 1.8 gm mass, 10-32 UNF-2B threaded mount
• Recommended mounting torque: 45–55 Newton-centimeters

– Typical Applications

• Environmental and thermal shock testing
• Component and circuit board qualification
• Structural dynamic characterization
• Fatigue and operational behavior assessment
• Vibration isolation verification

– Compatibility & Integration

• 10-32 top connector standard configuration
• Adhesive-mount variant (Model 080A90 Quick Bonding Gel)
• Low-bias electronics option (4.5 to 7.5 VDC output)
• Ground-isolated variant: ±300 g range, ≥56 kHz resonant frequency, 3.0 gm weight