Reference only P.2/15
MURATA MANUFACTURING CO., LTD
SPECIFICATION for TRANSDUCER
Part Number : PKGS-25SXAP1-R
1. Scope
This product specification is applied to surface mountable acceleration sensors used for hard
disk drive in a personal computer. Please contact us when using this product for any other
applications than described in the above.
2. Part Number
2-1 Murata Part Number : PKGS-25SXAP1-R
2-2 Customer Part Number :
2-3 Customer Drawing Number :
3. Dimensions
3-1 Appearance : As per paragraph 10.Appearance criteria.
3-2 Dimensions : See Figure 2.
3-3 Construction : A piezo ceramic element is stuck between two ceramic substrates.
4. Characteristics
(* Temperature 25±3°C, unless otherwise noted.)
Parameter Test Conditions Min. Typ. Max. Units Note
4-1 Charge Sensitivity 1kHz, 98.1m/s
2
(10G) applied in
the direction of D axis at Fig.1
−15% 35.7
(0.350)
+15% fC/(m/s
2
)
(pC/G)
1, 2,
4
4-2 Insulation Resistance : Ri 10V DC, after 1 min. 100 10000 MΩ
4-3 Non-Linearity % of the Full-Scale output at
490m/s
2
(50G). Range : ±50G
1% 5%
4-4 Resonance Frequency 21 27 kHz 3
4-5 Inclined Angle of
Sensitivity Axis
22 25 28 Degree
4-6
Temperature Drift
of Charge Sensitivity
Maximum deviation
from initial value at +25°C.
70°C -3% +2% +7%
0°C −4% −1% +2%
4-7 Capacitance : Co 1Vrms, 1kHz −30% 740 +30% pF
Note:
1. As measured with an applied acceleration in the direction of D at figure 1. In this case, positive
voltage and electrical charge are generated at electrode B.
2. 1G = 9.80665m/s
2
3. Resonance frequency of inner bimorph element.
4. f = 10
-15
