压电SMD贴片蜂鸣器SMPT12S400

specifications for piezotransducer

1.scope

thisspecification is applied to piezo transducer.

the productsdescribed below are used for sounder in various alarmsystems.

2.basiccondition

2.1operating voltage: 1.0—25.0vp-p  

2.2operating temperature range: -20—+80℃

2.3 storagetemperature range:-30—+85℃

3.electricalcharacteristics

3.1specification

3.1.1outputspl:≥80db at 10cm ,4000hz,5.0vp-p

3.1.2consumptioncurrent:≤2.0ma :at5.0vp-p

3.1.3resonant frequency:4000±500hz

3.1.4capacitance:15000±30%pf at 120hz

3.2measuring method

  3.2.1 measuring circuit for spl, consumption current,uency

    input signal:5.0vp-p, 4000hz,

    s.g: signal generator     ma:milliammeter     amp: amplifier

    mic: measuring condensermicrophone          dsp: display screen

3.2.2capacitance measuring:   lcr meter

3.2.3measuring condition

      temperature: 15—35℃   r.h.45—75%

3.2.4judgement condition

      temperature : 25±2℃r.h. 45—75%

本产品的加工定制是是，品牌是ringford，型号是smpt12s400，种类是蜂鸣器(片)，驱动方式是压电式(晶体式)，是否有源是无源，规格尺寸是12*12*3（mm）