This document contains data proprietary to PUI Audio Inc. Any use or reproduction, in any form, without prior written permission
of PUI Audio Inc. is prohibited.
©2017, PUI Audio Inc.
Data Sheet
SMT-0440-T-R
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 triedand-true transducer design into each and every one of these, for the designer’s
piece of mind.
The 4mm square by 2mm high SMT-0440-T-R top-firing electro-mechanical
transducer features a minimum SPL of 70 dBA at 10cm with only 3V (0-peak)
input at 4 kHz.
Features:
• Ultra-small design for wearable devices
• High output in a small, lightweight package
• Pick-and-place and reflow compatible
Specifications
Parameters
Rated Voltage
Operating Voltage Range
Impedance
Minimum SPL
(Rated voltage @ 10cm)
Resonant Frequency
Max Current Draw
(Rated voltage, 50% duty cycle,
at resonant frequency)
Housing Material
Terminal Material
Weight
Operating Temperature
Storage Temperature
Values
3
2~4
17 ± 3
Units
Volts 0-peak
Volts 0-peak
Ohms
70
4,000 ±500
dBA
Hz
90
LCP
Tin-plated Brass
0.1
-20 ~ +70
-30 ~ +80
mA
Grams
°C
°C
PUI Audio, Inc. A Projects Unlimited Company, 3541 Stop Eight Road, Dayton, OH 45414
Tel: (937) 415-5901 Fax: (937) 415-5925
This document contains data proprietary to PUI Audio Inc. Any use or reproduction, in any form, without prior written permission
of PUI Audio Inc. is prohibited.
©2017, PUI Audio Inc.
Measurement Method (3V0-p sine-sweep)
Frequency Response (measured with 3V0-p @ 10cm)
Recommended Drive Circuit
PUI Audio, Inc. A Projects Unlimited Company, 3541 Stop Eight Road, Dayton, OH 45414
Tel: (937) 415-5901 Fax: (937) 415-5925
This document contains data proprietary to PUI Audio Inc. Any use or reproduction, in any form, without prior written permission
of PUI Audio Inc. is prohibited.
©2017, PUI Audio Inc.
Recommended Reflow Profile
Reliability Testing
Type of Test
High Temperature Test
Low Temperature Test
Humidity Test
Test Specifications
96 hours at +70°C ± 2°C followed by two hours in
normal room temperature
96 hours at -20°C ± 2°C followed by two hours in
normal room temperature
25 ± 2 ℃ at 90-95% RH for 5 hr, then to 55 ± 2℃
at 90-95% RH for 5hr, then to 25°C ± 2°C at 9095% RH for 0.5hr, 10 cycles
The part shall be subjected to 5 cycles using the
following procedure followed by two hours at
room temperature:
Temperature Cycle Testing
10 to 50 to 10 Hz in three perpendicular
Vibration Test
directions for two hours each.
Drop transducer from a 70cm height onto a 10mm
Drop Test
thick wooden board in three directions.
After each test, the part’s SPL, frequency response, and current draw shall meet specifications.
PUI Audio, Inc. A Projects Unlimited Company, 3541 Stop Eight Road, Dayton, OH 45414
Tel: (937) 415-5901 Fax: (937) 415-5925
This document contains data proprietary to PUI Audio Inc. Any use or reproduction, in any form, without prior written permission
of PUI Audio Inc. is prohibited.
©2017, PUI Audio Inc.
Dimensions
Recommended PCB Land Pattern
PUI Audio, Inc. A Projects Unlimited Company, 3541 Stop Eight Road, Dayton, OH 45414
Tel: (937) 415-5901 Fax: (937) 415-5925
This document contains data proprietary to PUI Audio Inc. Any use or reproduction, in any form, without prior written permission
of PUI Audio Inc. is prohibited.
©2017, PUI Audio Inc.
Packaging
PUI Audio, Inc. A Projects Unlimited Company, 3541 Stop Eight Road, Dayton, OH 45414
Tel: (937) 415-5901 Fax: (937) 415-5925
This document contains data proprietary to PUI Audio Inc. Any use or reproduction, in any form, without prior written permission
of PUI Audio Inc. is prohibited.
©2017, PUI Audio Inc.
Revision
-
Specifications Revisions
Description
Released from Engineering
Note:
1. Unless otherwise specified:
A. All dimensions are in millimeters.
B. Default tolerances are ±0.5mm and angles are ±3°.
2. Specifications subject to change or withdrawal without notice.
3. This part is RoHS 2011/65/EU Compliant.
PUI Audio, Inc. A Projects Unlimited Company, 3541 Stop Eight Road, Dayton, OH 45414
Tel: (937) 415-5901 Fax: (937) 415-5925
Date
11/06/2014
