B03Y31 Triaxial IEPE Accelerometer - 250g
IEPE

B03Y31

Triaxial Cube IEPE Accelerometer
Sensitivity: 20mV/g
Range: ±250g
Frequency (5%): 1-8k Hz
Temp Range: -40~120°C
Connector: 1/4-28 4pin
Mount: M2.5 Female/Adhesive

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Datasheet (PDF): B03Y31
SKU: B03Y31 Categories: , , ,
IEPE Triaxial Cube Accelerometer · TEDS optional

Overview

The B03Y31 is a compact three-axis IEPE accelerometer built on a piezoelectric ceramic shear structure. With 20 mV/g sensitivity and a ±250 g range it is a higher-sensitivity member of the BXXY31 family, trading range for lower noise on medium-level vibration measurements. Typical uses include NVH, modal and structural testing, component qualification and general triaxial vibration measurement.

Built-in low-impedance IEPE electronics deliver low noise and a wide-bandwidth response, and high-quality ceramics ensure long-term stability. The 11 mm cube titanium-alloy housing is laser welded to IP68, each axis has its own M2.5 mounting hole for improved coupling and calibration, and insulating mounting hardware is included as standard.

20 mV/g
Sensitivity
±250 g
Measurement range
1 – 8 kHz
Frequency range (±5%)
−40 to +120 °C
Operating temperature
4.3 g
Weight
11 mm cube
Titanium alloy, IP68

Why engineers choose the B03Y31

Shear-mode piezoceramic

High-quality piezoelectric ceramic in a shear structure gives a wide-band response with 1% non-linearity and long-term stability for years of accurate measurement.

Built-in IEPE electronics

Integrated low-impedance circuit with 2–20 mA constant-current excitation. Spectral noise of 20 µg/√Hz at 100 Hz and 0.0005 g rms broadband resolution.

Rugged titanium cube

Laser-welded titanium housing sealed to IP68, rated to 1,200 g rms vibration and 3,000 g pk shock. M2.5 mounting holes on every axis and an isolated mounting plate as standard.

Typical applications

  • Automotive NVH testing
  • Modal and structural vibration analysis
  • HASS / HALT and reliability screening
  • Electronic component and PCB validation
  • General vibration monitoring
  • General-purpose triaxial vibration measurement

What’s in the box

  • B03Y31 triaxial accelerometer
  • Product Calibration Certificate
  • M2.5-M5 adapter screw and M2.5 × 4 mounting screw
  • Transparent washer and isolated mounting plate

Options & accessories

  • TEDS (IEEE 1451.4) for plug-and-play sensor ID – order model 20331Y
  • Recommended cable K06BB72 (1/4-28 4-pin) – build yours in the Cable Builder
  • Recommended mounting base H03B01
Sensitivity
20 mV/g (2 mV/(m/s²))
Measurement range
±250 g
Broadband resolution
0.0005 g rms
Frequency range
1 – 8 kHz (±5%) · 0.5 – 10 kHz (±10%)
Resonance frequency
≥ 70 kHz
Transverse sensitivity
≤ 5%
Excitation
20 – 30 VDC, 2 – 20 mA
Output bias voltage
8 – 12 V
Spectral noise (10 / 100 / 1000 Hz)
75 / 20 / 10 µg/√Hz
Shock limit
3,000 g pk
Connector / mounting
1/4-28 4-pin side · M2.5 × 1.8 thread, adhesive
Mounting torque
0.4 N·m
Sensitivity measured at 160 Hz, 24 VDC, 4 mA. Typical values. Vibration and shock limits per JBT 6822-2018 7.12.1 and refer to the sensor surviving in a non-powered state.

Other models in the BXXY31 family

Same titanium cube, same connector and mounting. Choose the sensitivity and range that fit your test levels.

Model Sensitivity Range Frequency (±5%) Noise @ 100 Hz
B01Y31 5 mV/g ±1,000 g 1 – 9 kHz 80 µg/√Hz
B02Y31 10 mV/g ±500 g 1 – 8 kHz 40 µg/√Hz
B03Y31This model 20 mV/g ±250 g 1 – 8 kHz 20 µg/√Hz
B05Y31 50 mV/g ±100 g 1 – 7 kHz 8 µg/√Hz
B06Y31 100 mV/g ±50 g 1 – 7 kHz 4 µg/√Hz
Downloads & next steps
Datasheet, installation guide, and a quote from our global support team. Most models ship within weeks.
Sensitivity (mV/g)

20
Range (g)

250
Broadband Resolution (g rms)

0.0005
Linearity

1%
Frequency Range [5%] (Hz)

1-8k
Min Frequency [5%] (Hz)

1
Max Frequency [5%] (Hz)

8000
Frequency Range [10%] (Hz)

0.5-10k
Resonant Frequency (kHz)

≥70
Discharge Time Constant (s)

≤1
Transverse Sensitivity

≤5%
Excitation Voltage (Vdc)

20-30 Vdc
Constant Current Excitation (mA)

2-20 mA
Output Impedance (Ω)

≤100
Output Bias Voltage (V)

8-12 Vdc
Max Acceleration (g)

1200
Max Shock (g)

3000
Temperature Range (℃)

-40~120
Min Temperature (°C)

-40
Max Temperature (°C)

120
Sensitivity Temperature Coefficient (%/℃)

-0.1
Sealing

Laser Welding IP68
Housing Material

Titanium Alloy
Output Connector

1/4-28 4pin
Mounting

Adhesive, M2.5 Female
Weight (grams)

5
Sensor Type

Cube
Output Type

IEPE
Axis

Triaxial
TEDS Optional

Yes

Related products

  • B06Y39

    B06Y39

    Triaxial Cube IEPE Accelerometer
    Sensitivity: 100mV/g
    Range: ±50g
    Frequency (5%): 1-7k Hz
    Temp Range: -40~120°C
    Connector: 8-36 4pin
    Mount: M2.5 Female

  • B05A00

    B05A00

    General Purpose IEPE Accelerometer
    Uniaxial
    Sensitivity: 50mV/g
    Range: ±100g
    Frequency (5%): 1-8k Hz
    Temp Range: -40~120°C
    Connector: Top
    Mount: 10-32/M5 Female

  • B02Y39

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    Sensitivity: 10mV/g
    Range: ±500g
    Frequency (5%): 1-8k Hz
    Temp Range: -40~120°C
    Connector: 8-36 4pin
    Mount: M2.5 Female

  • B02A00

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    Sensitivity: 10mV/g
    Range: ±500g
    Frequency (5%): 2-10k Hz
    Temp Range: -40~120°C
    Connector: Top
    Mount: 10-32/M5 Female