PUI - Projections Unlimited, Inc. - 4 Millimeter (mm) Size Transducers

Unit of Measure

Items	SMT-0440-S-R 90 Milliampere (mA) Maximum Rated Current Transducer List Price {QUOTE}	SMT-0440-T-R 70 Milliampere (mA) Maximum Current Draw Transducer List Price {QUOTE}
Manufacturer Stock	N/A {0}	N/A {0}
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 (V_pk)	N/A 3 V	N/A
Rated Voltage (V_0-p)	N/A	N/A 3 V
Peak Operating Voltage Range (V_pk)	N/A 2 ~ 4 V	N/A
Operating Voltage Range (V_0-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