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          Welcome to the Taizhou city sound electronic technology limited company official website!
          400-006-1982
          PRODUCT
          Location:HOME > PRODUCT
          • FUET-4020

          FUET-4020

          Name : FUET-4020

          Type : Electromagnetic Buzzer

          Drive Mode : Passive Buzzer

          Technology : Smd Buzzer

          Size : 3-5mm

          Description:

          A. SCOPE 
          This specification applies magnetic buzzer, FUET-4020

          B. SPECIFICATION

          No.

          Item

          Unit

          Specification

          Condition

          1

          Oscillation Frequency

          Hz

          4000

          Vo-p=1/2duty , square wave

          2

          Operating Voltage

          Vo-p

          2 ~ 4


          3

          Rated Voltage

          Vo-p

          3


          4

          Current Consumption

          mA

          MAX. 90

          at Rated Voltage

          5

          Sound Pressure Level

          dB

          MIN. 70

          at 10cm at Rated Voltage

          6

          Coil Resistance

          Ω

          17±3


          7

          Operating Temperature

          -20 ~ +70


          8

          Storage Temperature

          -30 ~ +80


          9

          Dimension

          mm

          4.0 x 4.0 x H2.0

          See appearance drawing

          10

          Weight (MAX)

          gram

          0.1


          11

          Housing Material


          LCP( Black )


          12

          Leading Pin


           Tin Plated Brass(Sn)

          See appearance drawing

          13

          Environmental  
          Protection Regulation


           RoHS


           
          C. APPEARANCE DRAWING  

           
          Tol : ± 0.3      Unit: mm


          D.TESTING METHOD    
          Standard Measurement conditions
          Temperature:25±2℃  Humidity:45-65%

          Acoustic Characteristics:
          The oscillation frequency, current consumption and sound pressure are measured by the 
          measuring instruments shown below
           
          In the measuring test, buzzer is placed as follows:
           
           
          E. Typical Frequency Response Curve


           

          F. Recommend Driving Circuit 
           
          The base current Ib should high enough so that it saturates the collector current of the transistor with the CB load.

           

          G. Soldering Condition
          (1)Recommendable reflow soldering condition is as follows
          (Reflow soldering is twice)
          Note:It is requested that reflow soldering should be executed after heat of product goes down to normal.

            Heat resistant line
          (Used when heat resistant reliability test is performed)
          (2)Manual soldering
             Manual soldering temperature 350 ℃ within 5 sec.

           

          H. RELIABILITY TEST

          NO.

          ITEM

          TEST CONDITION AND REQUIREMENT

          1

          High Temperature
          Test (Storage)

          After being placed in a chamber with 802℃ for 96 hours and then being placed in normal condition for 2 hours.
          Allowable variation of SPL after test: 10dB.

          2

          Low Temperature
          Test (Storage)

          After being Placed in a chamber with -302℃ for 96 hours and then being placed in normal condition for 2 hours.
          Allowable variation of SPL after test: 10dB.

          3

          Humidity Test

          After being Placed in a chamber with 90-95% R.H. at 402℃ for 96 hours and then being placed in normal condition for 2 hours.
          Allowable variation of SPL after test: 10dB.

          4

          Temperature Cycle
          Test

          The part shall be subjected to 5 cycles. One cycle shall be consist of: 
           
          Allowable variation of SPL after test: 10dB.

          5

          Drop Test

          Drop on a hard wood board of 4cm thick, any directions ,6 times, at the height of 75cm .
          Allowable variation of SPL after test: 10dB.

          6

          Vibration Test

          After being applied vibration of amplitude of 1.5mm with 10 to 55 Hz band of vibration frequency to each of 3 perpendicular directions for 2 hours .
          Allowable variation of SPL after test: 10dB.

          7

          Solderability
          Test

          Lead terminals are immersed in rosin for 5 seconds and then immersed in solder bath of +3005℃ for 31 seconds .
          90% min. lead terminals shall be wet with solder
          (Except the edge of terminals).

          8

          Terminal Strength
          Pulling Test

          The force of 9.8N(1.0kg) is applied to each terminal in axial direction for 10 seconds.
          No visible damage and cutting off.

          TEST CONDITION. 
          Standard Test Condition              :      a) Temperature : +5 ~ +35℃  b) Humidity : 45-85%        c) Pressure : 860-1060mbar 
          Judgment Test Condition             :      a) Temperature : +25 ± 2℃   b) Humidity : 60-70%        c) Pressure : 860-1060mbar 
           

          I. PACKING STANDARD


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