this specification applies to the electromagnetic buzzer specification test condition: temp=+252 oc related humidity=655% air pressure: 860 ~ 1060mbar item unit specifcation condition rated voltage vo-p 12.0 operating volt vo-p 10.0 ~ 14.0 mean current ma max. 40 at rated voltage direct current sound output dba 85 at 10cm(a-weight free air), at rated voltage direct current rated frequency hz 2300 300 operating temp oc -20 ~ +70 storage temp oc -30 ~ +80 dimension mm 12.0h9.5 see attached drawing weight gram 2.0 material pbt (black) terminal pin type (plating sn) see attached drawing environmental protection regulation rohs environment test item test condition evaluation standard high temp. test after being placed in a chamber at +70oc for 96 hours. after the test the part will meet specifcations without any degradation in appearance and performance except spl, after 4 hours at +25oc. the spl will be in 10dba compared with initial one. low temp. test after being placed in a chamber at -30oc for 96 hours. thermal shock the part will be subjected to 10 cycles. one cycle shall consist of: temp./humidity cycle the part will be subjected to 10 cycles. one cycle shall be 24 hours and consist of: page 1/5 60 min 30 min -30oc 70oc 30 min model: WST-1212S product: electromagnetic buzzer edition: a/2016
reliability test item test conditions evaluation standard operating life test ordinary temperature the part will be subjected to 96 hours of continuous operation at room temperature. after the test the part will meet specifcations without any degradation in appearance and performance except spl, after 4 hours at +25oc. the spl would be in 10dba compared with initial one. high temperature the part will be subjected to 72 hours of continuous operation at +60oc with 5.0v applied. low temperature the part will be subjected to 72 hours of continuous operation at -20oc with 5.0v applied. high and low voltage applying 10.0 voltage and 14.0 voltage, avail - able time 24 hours each. test condition standard test condition: a)temperature: +5~+35oc b)humidity:45~85% c)pressure: 860~1060mbar mechanical characteristics item test conditions evaluation standard solderability lead terminal are immersed in rosin for 5 seconds and then immersed in solder bath of +2605oc for 30.5 seconds. 90% min. lead terminals will be wet with solder no interference in operation. soldering heat resistance lead terminal are immersed in soldering bath of +2505oc for 20.5 seconds. terminal mechanical strength apply the terminal with 1kg tension for 1 minute. no damage and cutting of. vibration the part will be subjected to a vibration cycle of 10hz to 55hz to 10hz in a period of 1 minute. total peak amplitude will be 1.52mm(9.3g). the vibration test will consist of 2 hours per axis in each three axes(x,y,z). total 6 hours. after the test the part will meet specifcations without any damage in appearance and performance except spl. the spl would be in 80dba compared with initial one. drop test the part only will be dropped from a height of 75cm onto a 40mm thick wooden board 3 times in 3 axes(x,y,z). total of 9 times. recommended wave soldering temperature curve page 2/5 model: WST-1212S product: electromagnetic buzzer edition: a/2016
inspection fixture frequency response page 3/5 sound level meter tes1350a buzzer 40cm 10cm inspection fixture : h : model: WST-1212S product: electromagnetic buzzer edition: a/2016
dimensions tolerance:0.5 (unit: mm) no item material quantity 1 case ppo 1 2 diaphragm ferrum 1 3 magnet ring poly+ferrite 1 4 coil copper 1 5 core ferrum 1 6 pcb epoxy glass fber cloth + copper 1 7 transistor epoxy + copper 2 8 pin copper 2 page 4/5 8 6 5 4 3 2 1 no. 1 2 3 5 6 7 8 4 components material q'ty pin pcb core coil magnet ring diaphragm case ppo ferrum poly+ferrite copper ferrum epoxy glass fiber cloth +copper copper 1 1 1 1 1 1 2 transistor epoxy +copper 2 7 model: WST-1212S product: electromagnetic buzzer edition: a/2016
no item material quantity 1 case ppo 1 2 diaphragm ferrum 1 3 magnet ring poly+ferrite 1 4 coil copper 1 5 core ferrum 1 6 pcb epoxy glass fber cloth + copper 1 7 transistor epoxy + copper 2 8 pin copper 2 packing page 5/5 packing box lxwxh (mm) pieces tray 190 x 190 x 25 100 inner cartons 210 x 210 x 220 1000 outer carton 430 x 430 x 250 4000 model: WST-1212S product: electromagnetic buzzer edition: a/2016
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