QAC
BJGM25A01
Input Range
±60 g
Bias
<4 mg
One-year Composite Repeatability
<160 µg
Temperature Sensitivity
<30 µg/°C
Categories
QAC
Navigation / QAC
7 products in catalog
Quartz Accelerometers
A quartz accelerometer is a precision force-balance accelerometer whose proof mass is a quartz pendulum. The servo loop holds the pendulum at null and the restoring current is the acceleration measurement — a principle that delivers high stability, low noise, and excellent long-term repeatability for inertial-grade sensing.
Catalog quartz accelerometers cover compact to navigation-grade form factors with published input range, bias, scale factor, temperature coefficients, and long-term repeatability specifications. Quartz flexure technology is the standard choice where MEMS devices cannot meet bias-stability or repeatability requirements. Selection is driven by range, bias performance over temperature, output format, and mounting constraints.
Catalog quartz flexure accelerometers. Full bias, scale factor, thermal, and mechanical specifications are published per model.
Key Selection Parameters
Input Range
Full-scale acceleration, typically ±10 g to ±60 g. Size the range to the platform's maximum sustained plus transient acceleration.
Bias & Repeatability
Composite bias error and its one-month or one-year repeatability dominate navigation error. Compare only under stated conditions.
Scale Factor Stability
Scale factor error and its temperature coefficient determine accuracy at high g. Critical for long-range dead reckoning.
Temperature Coefficients
Bias and scale factor temperature sensitivity set uncompensated error over the operating range; check whether the model publishes modelled residuals.
Output & Interface
Analog current output into an external sampling resistor is typical — confirm the interface electronics and noise at the chosen resistor value.
Model Comparison
| Parameter | BJGM25A01 | BJGM25N01 | BJGM18T01 | JDSJ18TK01 | JDSJ25TK01 | JDSJ25TK02 |
|---|---|---|---|---|---|---|
| Input Range | ±60 g | ±60 g | ±60 g | ±60g | ±50g, ±60g, ±70g | ±70g, ±100g |
| Bias | — | ≤ 4 mg | ≤4 mg | ≤±7 mg ≤±5 mg | ≤±3 mg | ≤±3 mg |
| Scale Factor | 1.2 to 1.46 mA/g | 1.0 to 1.4 mA/g | 0.65 to 0.85 mA/g | 1.0 ± 0.2 mA/g | 1.05–1.30 mA/g | 0.8–1.2 mA/g |
| Threshold / Resolution | <1 µg | ≤ 1 µg | ≤1 µg | 5 µg | 5 µg | 5 µg |
| Bandwidth | >300 Hz | ≥ 300 Hz | ≥300 Hz | 800–2500 Hz | 800–2500 Hz | 800–2500 Hz |
| Weight | 71 ±4 g | < 80 g | — | ≤30 g | ≤80 g | ≤80 g |
- Input Range
- ±60 g
- Bias
- —
- Scale Factor
- 1.2 to 1.46 mA/g
- Threshold / Resolution
- <1 µg
- Bandwidth
- >300 Hz
- Weight
- 71 ±4 g
- Input Range
- ±60 g
- Bias
- ≤ 4 mg
- Scale Factor
- 1.0 to 1.4 mA/g
- Threshold / Resolution
- ≤ 1 µg
- Bandwidth
- ≥ 300 Hz
- Weight
- < 80 g
- Input Range
- ±60 g
- Bias
- ≤4 mg
- Scale Factor
- 0.65 to 0.85 mA/g
- Threshold / Resolution
- ≤1 µg
- Bandwidth
- ≥300 Hz
- Weight
- —
- Input Range
- ±60g
- Bias
- ≤±7 mg ≤±5 mg
- Scale Factor
- 1.0 ± 0.2 mA/g
- Threshold / Resolution
- 5 µg
- Bandwidth
- 800–2500 Hz
- Weight
- ≤30 g
- Input Range
- ±50g, ±60g, ±70g
- Bias
- ≤±3 mg
- Scale Factor
- 1.05–1.30 mA/g
- Threshold / Resolution
- 5 µg
- Bandwidth
- 800–2500 Hz
- Weight
- ≤80 g
- Input Range
- ±70g, ±100g
- Bias
- ≤±3 mg
- Scale Factor
- 0.8–1.2 mA/g
- Threshold / Resolution
- 5 µg
- Bandwidth
- 800–2500 Hz
- Weight
- ≤80 g
Selection Workflow
- 01
Size the range
Select input range to cover worst-case sustained and transient acceleration without saturation.
- 02
Budget the bias
Allocate bias and repeatability error against the navigation or stabilization accuracy target.
- 03
Check the thermal path
Review bias and scale-factor temperature coefficients — and modelled residuals where published — against the operating profile.
- 04
Inquire with the shortlist
Send candidate models and operating conditions — configuration and availability are confirmed per project.
Typical Applications
- Inertial navigation and guidance systems
- Platform stabilization and pointing
- Tilt and inclination measurement under motion
- Precision vibration and motion monitoring
Testing Considerations
- lab_profileCompare bias figures only with their stated conditions — 1σ window, temperature range, and warm-up state all change the number.
- lab_profileVerify repeatability over the timescale relevant to the application (4-hour, 1-month, 1-year figures differ materially).
- lab_profileConfirm output noise at the actual sampling resistor used in the interface electronics.
QAC
BJGM25N01
Input Range
±60 g
Bias Error
≤ 4 mg
Bias Long-Term Repeatability (1 Year, over temperature)
≤ 160 (3σ) µg
Bias Temperature Sensitivity
≤ 30 µg/°C
QAC
BJGM18T01
Input Range
±60 g
Bias Error
≤4 mg
Bias Long-Term Repeatability (1 year)
≤1 (3σ) mg
Bias Temperature Sensitivity
≤50 µg/°C
QAC
JDSJ18TK01
Range
±60g ±60g
Threshold
5 µg 5 µg
Bias K₀/K₁
≤±7 mg ≤±5 mg
Scale Factor K₁
1.0 ± 0.2 mA/g 1.0 ± 0.2 mA/g
QAC
JDSJ25TK01
Range
±50g, ±60g, ±70g ±50g, ±60g, ±70g
Threshold
5 µg 5 µg
Bias K₀/K₁
≤±3 mg ≤±3 mg
Scale Factor K₁
1.05–1.30 mA/g 1.05–1.30 mA/g
QAC
JDSJ25TK02
Range
±70g, ±100g ±70g, ±100g
Threshold
5 µg 5 µg
Bias K₀/K₁
≤±3 mg ≤±3 mg
Scale Factor K₁
0.8–1.2 mA/g 0.8–1.2 mA/g
QAC
PBYS18D22
External Diameter
22.2 mm
Pendulum Thickness
2.25 mm
Pendulum Gap
2.5 mm
Base Thickness
0.78 mm
Related Resources
Specify This Category
Share your target specifications and environmental conditions. Pricing, availability, and configuration are confirmed per project through direct inquiry.