EFJ-G25EF01 Panasonic - ECG, EFJ-G25EF01 Datasheet - Page 3

• Manufacturer Part Number: EFJ-G25EF01
• Description: PIEZO MECHANICAL SHOCK SENSOR
• Manufacturer: Panasonic - ECG
• Type: Piezo Mechanicalr

Specifications of EFJ-G25EF01

• Lead Free Status / Rohs Status: Contains lead / RoHS non-compliant
• Other names: EFJ-G25EF01; EFJG25EF01; P11437TR

7.Operating Precautions
7.1 Application
7.2
7.2.1
7.2.2
7.2.3 Application Notes
(1) Fail-safe Design for Equipment
(2) Operating Temperature Ranges
(3) Changes/Drifts in Voltage Sensitivity
(4) Stray Capacitance
(5) Direct Voltage
(1) “Flow Soldering” shall not be applied to the piezoelectric sensor.
(2) “Ultrasonic Cleaning”and “Ultrasonic Welding”shall not be applied to the piezoelectric sensor
(3) Avoid water washing after soldering.
(1) Handling precautions
2) If the product is drooped or a strong stress is applied to it, it nay break.
This piezoelectric sensor is designed for use in domestic electric appliances, AV. equipment, OA
equipment, communication equipment, measuring equipment and general electronic equipment.
Check with us separately, for use in equipment which needs high reliability
(such as automobiles, aircraft, medical equipment and space equipment).
adding a protective and/or retarding design circuit against deterioration and failures of the
piezoelectric sensor.
This piezoelectric sensor shall not be operated beyond the specified “Operating Temperature Range”
in the Specifications.
It shall be noted that voltage sensitivity of the piezoelectric sensor may drift depending IC
applied (the type names, the manufacturer) and resistance values of external resisters and the
circuit design.
Stray capacitance and insulation resistance on printed circuit board may cause abnormalities of
the piezoelectric sensor such as the voltage sensitivity and the frequency characteristic.
Attention shall be paid to those abnormalities above mentioned in circuit design.
Avoid directly applying a direct voltage to the piezoelectric sensor.
1) Abnormal/excess electrical stresses such as over voltage spikes and electrostatic discharges may
In application of the piezoelectric sensor, it is recommended that equipment shall be protected by
for preventing them from electrical failures and mechanical damages.
Do not use the products which strong stress have been applied.
cause electrical deterioration's and failures of the piezoelectric sensor and affect reliability of
the devices.
Precautions for Handling
Precautions for Safety
Prohibited Applications
7.3 The design is subject to change for improvement of quality.
(4) Maintenance and using environment
(5) Long Term Storage
(2) Automated Assembly
(3) Soldering in PC boards and washing after soldering
Avoid maintenance and use in the following environments.
2) Take care that a soldering iron does not contact with the product body (out case).
3) Rosin-based and non-activated soldering flux is recommended.
4) Post Soldering Cleaning
1) Corrosive gaseous atmospheres (Cl2 , NH3 , SO2 , Ox etc.)
2) Dusty places
3) Places exposed to direct sunlight
4) Places over which water is splashed
5) To be exposed directly to water
6) Places exposed to briny air
7) Places apt to be affected by static electricity or electric field strength
The piezoelectric sensor shall not be stored under severe conditions of high temperatures and high humidifies.
Store them indoors under 40
solderability before use.And avoid maintenance and use in the following environments.
1) Corrosive gaseous atmospheres (Cl2 , NH3 , SO2 , Ox etc.)
2) Places exposed to direct sunlight
3) Places where dew is apt exposed to condense
1) The product is applicable to refold soldering. Conditions of the soldering temperature and time are
For automatic inserting , make sure to make inserting checks by means of the inserting machine in
advance. In inserting the product, unsuitable chucking force or inserting speed may apply so excessive
impulse to break the product.
Avoid inserting using mechanical-chuck-type inserting machine. Also, for the inserting machine using
other method, select the low speed.
Please contact us for details.
Cleaning Conditions such as kinds of cleaning solvents, immersion times and temperatures etc.
shall be checked by experiments before production.
The content of halogen in the flux shall be 0.1 wt. or less.
Application of ultrasonic cleaning is prohibited.
recommended as shown below.
For manual soldering, the maximum soldering temperature and time should be 300
Preheating temperature : 175
Preheating time
Soldering temperature
Soldering time
Peak temperature
: 1~2 minutes
: 220
: 20 sec max.
: 250
o
C max, and 75% RAH max. Use them within one year and check the
o
o
o
C
C
C max.
220
175
(℃)
1~2 minutes
Peak temperture:250oC max
20 seconds
o
C and 3 seconds.
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