# PIEZO TRANSDUCER, BUZZER, 35MM, 4.7KHZ, 85DB, 3V ![Product image](https://novapart.co/image/farnell:2787717/) **URL**: https://novapart.co/products/28-740/piezo-transducer-buzzer-35mm-47khz-85db-3v **SKU**: 28-740 **Manufacturer**: MCM **Category**: Sensors & Transducers || Transducers || Sensing Transducers || Piezo Transducers **Price**: €2.4300 **Stock**: 100+ **Lead Time**: 2 days (indicative) ## Specifications | Parameter | Value | |---|---| | Sound Level Spl | 85dB | | Resonant Frequency | 4.7kHz | | Supply Voltage Max | 28V | | Supply Voltage Min | 3V | | Transducer Function | Buzzer | | Sound Level Distance | 100mm | | Operating Current Max | 20mA | ## Datasheet 📄 [Download PDF](https://novapart.co/datasheet/farnell:2787717/) ## **1.Scope** This specification is applied to Piezo Buzzer (Self-Drive Type) The product describe below are used for buzzer in various alarm systems. ## **2.Basic Condition** - 2.1 Rated Voltage:12VDC - 2.2 Operating Voltage:8~16VDC - 2.3 Operating Temperature Range:-20 ºC~+70 ºC - 2.4 Storage Temperature Range:-30ºC~+80 ºC ## **3.Electrical Characteristics** - 3.1 Sound Press Level:≧90dB at 30cm / 12VDC - 3.2 Consumption Current:≦8mA at 12VDC - 3.3 Resonate Frequency:3800Hz  300Hz - 3.4 Tone Nature:Continuous Sound - 3.5 Material:ABS ## **4.Measuring Method** **==> picture [326 x 126] intentionally omitted <==** **----- Start of picture text -----**
Piezo
Sounder
Decibel meter
12VDC 30cm
A
40cm
Measuring
Distance
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## **5.Sound Press Level & Consumption Current Curve** ## **TEST REPORT** |**TEST REPORT**|**TEST REPORT**|**TEST REPORT**|**TEST REPORT**|**TEST REPORT**|**TEST REPORT**|**TEST REPORT**|**TEST REPORT**| |---|---|---|---|---|---|---|---| |**Product No:20EB020**
**Date: 2010-9-24**|||||||| |**#**|**dB**|**mA**|**Hz**|**#**|**dB**|**mA**|**Hz**| |1|98|5.4|3926||||| |2|99|4.2|3941||||| |3|99|5.5|3890||||| |以下空白|||||||| ||||||||| ||||||||| ||||||||| ||||||||| ||||||||| ||||||||| ||||||||| ||||||||| ||||||||| ||||||||| ||||||||| ||||||||| ||||||||| ||||||||| ||||||||| ||||||||| ||||||||| ||||||||| ||||||||| ||||||||| ||||||||| ||||||||| ||||||||| |**Remark:**
**(1)Sound Press Level**：
≧90dB at 30cm / 12VDC
**(2)Consumption Current**：≦8mA at 12VDC
**(3)Resonate Frequency**：3800Hz500|||||||| |**Approved BY:**陳
毓
宏
**Auditing BY:**陳
逸
閩
**Checked BY:**李
秋
蓉|||||||| ## **6.Environment Test Method** |**NO.**|**ITEM**|**TEST CONDITION AND REQUIREMENT**|**TEST CONDITION AND REQUIREMENT**|**TEST CONDITION AND REQUIREMENT**|**TEST CONDITION AND REQUIREMENT**|**TEST CONDITION AND REQUIREMENT**|**TEST CONDITION AND REQUIREMENT**|**TEST CONDITION AND REQUIREMENT**| |---|---|---|---|---|---|---|---|---| |1|High Temperature
Test (Storage)|After being placed in a chamber with 802ºC 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 -302ºC 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 402ºC 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
of：
Allowable variation of SPL after test:10dB.
- 30ºC
+80ºC
+25ºC||||||cycle shall be consist
+25ºC| ||||||||+80ºC|| |||||||||| |||||||||| |||||||||| |||||||||| |||||||||| |||||SPL after test:10dB.||||| |5|Drop Test|Drop on a hard wood board of 4cm thick, any directions ,6 times,
at the height of 100cm. Allowable variation of SPL after test:
10dB.||||||| |6|Vibration Test|After being applied vibration of amplitude of 1.5mmwith 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|Solder ability
Test|Lead terminals are immersed in rosin for 5 seconds and then
immersed in solder bath of +3005ºC for 31 seconds.90% min.
lead terminals shall be wet with solder (Except the edge of
terminals).||||||| |8|Terminal / Wire
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.||||||| ## **7.Reliability Test** ## Continuous life test: 250 Hours continuous operating at +70 ºC with maximum rated voltage applied . Intermittent life test: Aduty cycle of 1 minute on, 5 minutes off,a minimum of 10000 times at temperature +25 ºC  2 ## **8.Dimension** **==> picture [99 x 10] intentionally omitted <==** **----- Start of picture text -----**
Tolerance ±0.5mm
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**==> picture [99 x 15] intentionally omitted <==** **----- Start of picture text -----**
9.Packing List
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