PUI Audio?'s all-new HD Series microphones use premium-grade FETs and diaphragms for high sensitivity and superior signal-to-noise ratio. Each microphone features GSM buzz-blocking capacitors. Upgrade the ECM microphone that you use today with a PUI Audio HD Series microphone.

The 4 mm diameter TOM-1537L-HD-R is designed for extreme fidelity, from 20 Hz to 20 kHz, in the smallest ECM package that PUI Audio has offered to date.
Unit of Measure

Specifications

Available

Manufacturer Stock

Brands

 PUI Audio™

Manufacturer

 PUI Audio�, Inc.

Directivity

 Omni-Directional

Sensitivity

 -37 dB

Sensitivity Tolerance (±)

 3 dB

Testing Condition for Sensitivity

 1 kHz at 50 cm
0 dB=1V/Pa

Direct Current (DC) Rated Voltage

 2 V

Output Impedance at 1 Kilohertz (kHz) Frequency

 2.2 kΩ

Current Consumption

 500 µA

Note for Current Consumption

 3VS with 2.2 kΩ RL

Signal to Noise Ratio

 68 dB

Note for Signal to Noise Ratio

 1 kHz, 94 dB input, A-Weighted

Decreasing Voltage

 -3 V

Note for Decreasing Voltage

 2VS to 1.5VS

Frequency Range

 20 ~ 20000 Hz

Direct Current (DC) Operating Voltage Range

 1 ~ 10 V

Maximum Sound Pressure Level (SPL) Input (Total harmonic distortion (THD) < 3 Percent (%))

 110 dB

Operating Temperature

 -20 ~ +60 ºC

Storage Temperature

 -40 ~ +85 ºC

Height

 1.5 mm

Diameter

 4 mm

Diameter Tolerance (±)

 0.1 mm

Angle Tolerance (±)

 3 º

Industry Standards

 Restriction of Hazardous Substances (RoHS) 2011/65/EU

Weight

 < 0.5 g

Reliability Testing

High Temperature Test

 200 hours at +70 ºC ± 3 ºC followed by two hours in normal room temperature

Low Temperature Test

 200 hours at -25 ºC ± 3 ºC followed by two hours in normal room temperature

Humidity Test

 200 hours at +40 ºC ± 3 ºC with relative humidity at 90% to 95% followed by 2 hours in normal room temperature

Temperature Cycle Test

 30 minutes at -25 ºC, 10 minutes at 20 ºC, 30 minutes at +70 ºC, 10 minutes at 20 ºC for five cycles, followed by 2 hours in normal room temperature

Vibration Test

 10-55 Hz for 1 minute with 1.52 mm distance, followed by a two-hour 3 axis test in packaging

Drop Test

 Drop microphones in packaging onto concrete floor from 1 meter height in each of 3 axis

Electrostatic Discharge (ESD) Test
  1. Contact discharge - Discharge 6000 VDC from capacitor into microphone output through 330 Ω resistor ten times.
  2. Air discharge - Discharge 8000 VDC into sound hole of the microphone ten times.

Note Electrostatic Discharge (ESD) Test

 According to IEC 6100

Note for Reliability Testing

 After each test, the speaker's SPL shall be ±3 dB of the original SPL

Features

Features

 True 20 Hz to 20 kHz performance

Note

Note

 Specifications subject to change or withdrawal without notice.