1.Scope ( Item This Specification applies to the Piezoelectric sensor for mechanical shock. SPEC 5.3 Vibration 2.Standard Products 5 - 1 ) Test Method Vs drift:within10% 10 to 55 Hz(1 minute sweep), Cp drift:within10% Amplitude:1.5 mm, 2 hours each direction Item Rating 5.4 Solderability o 2.1 Operating temperature range -10 ~ 60 C o 2.2 Storage temperature range -30 ~ 80 C 2 15000 m/s max. 2.3 Acceleration limit 5.5 Soldering heat More than 3/4 of the soldered area Pre-heat:150 10 oC,1~2 minutes of the terminal electrodes shall be Soldering:230 5 oC,3 0.5 s covered with new sold Vs drift:within10% Refolw soldering once 240oC peak ,over 220oC 10s max. Cp drift:within10% resistance Pre-heating 140 10 oC 1~2min. 3.Construction 5.6 Shock Item SPEC 3.1 Appearance Vs drift:within10% 2 15000 m/s, 0.5msec half sinusoidal Cp drift:within10% wave ,5 times each direction No remarkable damage or stains allowed (Visual check) 3.2 Shape/Size As per Fig.1 attached 3.3 Marking Shape(F) , Inclined Angle(2),Product serial No. 6.Environmental Performance Item 4.Electrical Performance 6.1 Dry heat SPEC Vs drift:within10% Test Method o 85 2 C,500 hours Cp drift :within10% Item SPEC 4.1 Voltage Sensitivity (Vs) 4.2 Capacitance (Cp) 2 0.1 mV/(m/s ) 15 % 100m/s ,1kHz 220 pF 20 % 1Vrms , 1kHz 4.3 Insulation Resistance 500 Mohm min. 4.4 Resonant Frequency 25 kHz min. 5 % max. 4.5 Non-linearity Test Condition 2 Vs drift:within10% -40 3oC,500 hours Cp drift :within10% 6.3 Damp heat Vs drift:within10% 40 2 oC,90~95 %RH, 500 hours Cp drift :within10% 10V DC , after 1min. 6.4 Heat cycle 2 at 500m/s 25 3o 4.6 Incident Angle of 6.2 Cold 1) 6.5 Temperature Vs drift:within10% -40 3 oC~ RT ~85 3 oC~ RT Cp drift :within10% 30min 2min 30min 2min Vs drift:within10% 5cycles o -10 ~ 60 C Cp drift :within20% Sensitivity Axis 1) As measured with an applied acceleration in the direction of sensitivity axis of Fig.1. 5.Mechanical Performance Item 5.1 Electrode Strength 5.2 Bending Strength SPEC Test Method No terminal electrode shall be 4.9 N from transverse peeled off. direction,10 0.5 s No outstanding damage. PC boad deflection distance:1 mm (speed 1 mm/second) 10 0.5 s Thickness of PC board : 1.6 mm CLASSIFICATION SPECIFICATIONS Number 151 - EFJ -G25F02 Part name Piezoelectric sensor for mechanical shock Part No Taped Type EFJG25EF01 DATE APPROVAL S.kawamura Sep. 1 , 1999 CHECK DESIGN T.Ninomiya Item Standard test conditions 4.1 Voltage Test Method o Figure 1 20 C 65% RH,1.013x10 Pa as a rule;however,if there occurs no doubt about judgement, the test may be performed at 15~35oC, 25~85% RH and 0.860x105~1.060x105 Pa Strength Strength 2.3 F2 Solder the external electrodes to the PC board so that the marking side of a Electrode 1 product is located upper, and apply the specified load from one side of the product Polity making Serial No. Electrode 2 Solder the external electrodes to the PC Sensitivity Axis A board so that the marking side of a 253o distance 1 mm. Sample 1.0 PC board at 90 mm span and deflection (1.6) Repeat the vibration at specified frequency and specified oscillation amplitude, and apply it in X.Y.Z directions orthogonal to the sample for the specified time (1.2) (1.2) with one minute as a cycle. 5.4 Solderability Dip a product preheated as specified in the solder bath maintained at the specified temperature so that the electrode is completely hidden for a given period of time. Solder shall be H63A(eutectic solder JIS-Z-3282) or Sn-Pb solder including 2 to 5 % of Ag, the flux shall be rosin (JIS-K-5902) methanol (JIS-K-1501) solution and the weight ratio shall be approx.25%. 5.5 Soldering heat temperature and time, take it out in the room temperature, and after leaving it for 8 hours, measure the characteristics. 5.6 Shock After Dropping specified times and directions,measure the characteristics. 6.1 Dry heat After leaving a product in the thermostatic oven maintained at the specified temperature for the specified time, take it out in the room temperature, and after leaving it for 8 hours, measure the characteristics. After leaving a product in the thermostatic oven maintained at the specified temperature for the specified time, take it out in the room temperature, and after leaving it for 8 hours, measure the characteristics. 6.3 Damp heat After leaving a product in the thermostatic oven maintained at the specified temperature and humidity for the specified time, take it out in the room temperature, and after leaving it for 8 hours, measure the characteristics. 6.4 Heat cycle Remark) After passing the sample through the reflow furnace maintained at the specified resistance 6.2 Cold 2 ) Tolerance : 0.2 product is located upper, and deflect the 5.3 Vibration - (0.9) to maintain the conditions for a given period of time. 5.2 Bending 5 4.8 (0.9) See Fig.2 sensitivity 5.1 Electrode ( 5 After repeating the specified cycle by the specified frequency, take it out in the room temperature, and after leaving it for 8 hours, measure the characteristics. When an acceleration is applied in the direction of A axis, positive voltage occurs at electrode 1. ( Unit : mm ) Serial No. ( 5 - 7.Operating Precautions 7.1 Application (2) Automated Assembly This piezoelectric sensor is designed for use in domestic electric appliances, AV. equipment, OA For automatic inserting , make sure to make inserting checks by means of the inserting machine in equipment, communication equipment, measuring equipment and general electronic equipment. advance. In inserting the product, unsuitable chucking force or inserting speed may apply so excessive Check with us separately, for use in equipment which needs high reliability impulse to break the product. (such as automobiles, aircraft, medical equipment and space equipment). Avoid inserting using mechanical-chuck-type inserting machine. Also, for the inserting machine using 7.2 Precautions for Handling 7.2.1 other method, select the low speed. Precautions for Safety (1) Fail-safe Design for Equipment Please contact us for details. (3) Soldering in PC boards and washing after soldering In application of the piezoelectric sensor, it is recommended that equipment shall be protected by 1) The product is applicable to refold soldering. Conditions of the soldering temperature and time are adding a protective and/or retarding design circuit against deterioration and failures of the recommended as shown below. () piezoelectric sensor. Preheating temperature : 175oC (2) Operating Temperature Ranges This piezoelectric sensor shall not be operated beyond the specified "Operating Temperature Range" Preheating time : 1~2 minutes in the Specifications. Soldering temperature : 220oC Soldering time : 20 sec max. Peak temperature : 250oC max. (3) Changes/Drifts in Voltage Sensitivity It shall be noted that voltage sensitivity of the piezoelectric sensor may drift depending IC Peak temperture:250oC max 220 175 20 seconds 1~2 minutes applied (the type names, the manufacturer) and resistance values of external resisters and the circuit design. 2) Take care that a soldering iron does not contact with the product body (out case). For manual soldering, the maximum soldering temperature and time should be 300o C and 3 seconds. (4) Stray Capacitance Stray capacitance and insulation resistance on printed circuit board may cause abnormalities of 3) Rosin-based and non-activated soldering flux is recommended. the piezoelectric sensor such as the voltage sensitivity and the frequency characteristic. The content of halogen in the flux shall be 0.1 wt. or less. Attention shall be paid to those abnormalities above mentioned in circuit design. 4) Post Soldering Cleaning (5) Direct Voltage Application of ultrasonic cleaning is prohibited. Avoid directly applying a direct voltage to the piezoelectric sensor. Cleaning Conditions such as kinds of cleaning solvents, immersion times and temperatures etc. shall be checked by experiments before production. (4) Maintenance and using environment Avoid maintenance and use in the following environments. 7.2.2 Prohibited Applications 1) Corrosive gaseous atmospheres (Cl2 , NH3 , SO2 , Ox etc.) (1) "Flow Soldering" shall not be applied to the piezoelectric sensor. 2) Dusty places (2) "Ultrasonic Cleaning"and "Ultrasonic Welding"shall not be applied to the piezoelectric sensor 3) Places exposed to direct sunlight for preventing them from electrical failures and mechanical damages. 4) Places over which water is splashed (3) Avoid water washing after soldering. 5) To be exposed directly to water 7.2.3 Application Notes 6) Places exposed to briny air (1) Handling precautions 1) Abnormal/excess electrical stresses such as over voltage spikes and electrostatic discharges may 7) Places apt to be affected by static electricity or electric field strength (5) Long Term Storage cause electrical deterioration's and failures of the piezoelectric sensor and affect reliability of The piezoelectric sensor shall not be stored under severe conditions of high temperatures and high humidifies. Store them indoors under 40oC max, and 75% RAH max. Use them within one year and check the the devices. 2) If the product is drooped or a strong stress is applied to it, it nay break. solderability before use.And avoid maintenance and use in the following environments. Do not use the products which strong stress have been applied. 1) Corrosive gaseous atmospheres (Cl2 , NH3 , SO2 , Ox etc.) 2) Places exposed to direct sunlight 3) Places where dew is apt exposed to condense 7.3 The design is subject to change for improvement of quality. 3 ) ( 8.Embossed tape Packaging 8.1 Applicable Standard JIS C 0806 8.4 Marking The following items shall be marked at least on the side of the reel. 8.2 Specifications (1) Part Number 8.2.1 Dimensions (2) Quantity (1) Carrier Tape : Figure 3 (3) Lot Number (2) Reel : Figure 4 (4) Manufacturer's Name (3) The product shall be packed properly not to be damaged during transportation and storage. 8.2.2 Reeling Quantity 8.5 Tape Specifications 2000 pcs/reel 8.2.3 Taping structure (1) The tape shall be wound around the reel in the direction shown below. (1) Tensile Strength of Carrier Tape : 9.8N min. (2) Top Cover Tape Adhesion (See the below figure.) Pull off Angle : 0~15o Speed : 300 Force : 0.19~0.69N +0 -50 mm/minute (2) Leader part and vacant position (3) Missing Parts The maximum number of missing parts shall not exceed 0.1% per reel and continuous missing shall not be more than 3 parts. 5 - 4 ) ( Figure 2 Test Method of measuring Voltage Sensitivity Sample Oscilloscope 5 Figure 4 Reel Dimensions Standard Acceleration Sensor(ref.) Voltage Meter Vantage Meter Charge Amplifier Vibrator Oscillator Power Amplifier Figure 3 Carrier Tape Dimensions A B C D E 1805 60min. 13.00.2 210.8 20.5 W 12.4 Polarity Marking Feeding Hole Chip Pocket Chip Component Tape running direction W F E P1 P2 P0 12.0 5.5 1.75 4.0 2.0 4.0 0.3 0.1 0.1 0.1 0.1 0.1 A B 2.6 5.4 0.2 0.2 D0 1.5 +0.1 -0 t1 t2 0.60 1.70 max. max. Unit:mm T t r 18.4max 3max 1.0 Uint:mm +2.0 -0 - 5 )