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            MLT-1032 - 貼片蜂鳴器

            A. SCOPE 
            This specification applies magnetic buzzer, MLT-1032

            B. SPECIFICATION

            No.

            Item

            Unit

            Specification

            Condition

            1

            Oscillation Frequency

            Hz

            2830

            Vo-p=1/2duty , square wave

            2

            Operating Voltage

            Vo-p

            2.5~4.5

             

            3

            Rated Voltage

            Vo-p

            3.6

             

            4

            Current Consumption

            mA

            MAX. 100

            at Rated Voltage

            5

            Sound Pressure Level

            dB

            MIN. 90

            at 10cm at Rated Voltage

            6

            Coil Resistance

            Ω

            18±3

             

            7

            Operating Temperature

            -20 ~ +60

             

            8

            Storage Temperature

            -30 ~ +80

             

            9

            Dimension

            mm

            10 x 10 x H3.2

            See appearance drawing

            10

            Weight (MAX)

            gram

            0.8

             

            11

            Housing Material

             

            LCP( Black )

             

            12

            Leading Pin

             

             Tin Plated Brass(Sn)

            See appearance drawing

            13

            Environmental  
            Protection Regulation

             

             RoHS

             

             

            C. APPEARANCE DRAWING  
             
            Tol : ± 0.5      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 852℃ 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 -402℃ 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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