Unit of Measure
Items
90 Milliampere (mA) Maximum Rated Current Transducer

90 Milliampere (mA) Maximum Rated Current Transducer

70 Milliampere (mA) Maximum Current Draw Transducer

70 Milliampere (mA) Maximum Current Draw Transducer
Manufacturer Stock
Description N/A N/A Though extremely small, the SMT-0440 series transducers are constructed almost exactly the same as electro-mechanical transducers three times their size. What this means for users is that PUI Audio is leveraging their decades of tried-and-true transducer design into each and every one of these, for the designer's piece of mind.

The 4 mm square by 2 mm high SMT-0440-T-R top-firing electro-mechanical transducer features a minimum SPL of 70 dBA at 10 cm with only 3V (0-peak) input at 4 kHz.
Brands N/A PUI Audio™
Manufacturer N/A PUI Audio�, Inc.
Rated Peak Voltage (Vpk) N/A 3 V N/A
Rated Voltage (V0-p) N/A N/A 3 V
Peak Operating Voltage Range (Vpk) N/A 2 ~ 4 V N/A
Operating Voltage Range (V0-p) N/A N/A 2 ~ 4 V
Maximum Rated Current N/A 90 mA N/A
Coil Resistance N/A 17 Ω N/A
Coil Resistance Tolerance (±) N/A 3 Ω N/A
Impedance N/A N/A 17 Ω
Impedance Tolerance (±) N/A N/A 3 %
Minimum Sound Pressure Level (SPL) at 10 Centimeter (cm) N/A 70 dBA
Resonant Frequency N/A 4000 Hz
Resonant Frequency Tolerance (±) N/A 500 Hz
Maximum Current Draw1 N/A N/A 90 mA
Color N/A Black N/A
Housing Material N/A Liquid Crystal Polymers (LCP)
Terminal Material N/A Tin Plated Brass
Operating Temperature N/A -20 ~ +70 ºC
Storage Temperature N/A -30 ~ +80 ºC
High Temperature Test N/A N/A 96 hours at +70 ºC ± 2 ºC followed by two hours in normal room temperature
Low Temperature Test N/A N/A 96 hours at -20 ºC ± 2 ºC followed by two hours in normal room temperature
Humidity Test N/A N/A 25 ± 2 ºC at 90-95% RH for 5 hr, then to 55 ± 2 ºC at 90-95% RH for 5 hr, then to 25 ºC ± 2 ºC at 90-95% RH for 0.5 hr, 10 cycles
Vibration Test N/A N/A 10-50 to 10 Hz in three perpendicular directions for two hours each.
Drop Test N/A N/A Drop transducer from a 70 cm height onto a 10 mm thick wooden board in three directions.
Note for Reliability Testing N/A N/A After each test, the part's SPL, frequency response, and current draw shall meet specifications.
Type N/A Electro-Mech N/A
Size N/A 4 mm
Tolerance (±) N/A 0.5 mm
Angle Tolerance (±) N/A 3 º
Weight N/A 0.1 g
Industry Standards N/A Restriction of Hazardous Substances (RoHS) 2011/65/EU
Features N/A N/A
  • Ultra-small design for wearable devices
  • High output in a small, lightweight package
  • Pick-and-place and reflow compatible
Note N/A Specifications subject to change or withdrawal without notice.
  • 1 Rated voltage, 50% duty cycle, at resonant frequency