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PUM Series -46 Decibels (dB) Sensitivity Unidirectional Microphone

PUM Series -46 Decibels (dB) Sensitivity Unidirectional Microphone
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PUM Series -50 Decibels (dB) Sensitivity Unidirectional Microphone

PUM Series -50 Decibels (dB) Sensitivity Unidirectional Microphone
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Manufacturer Stock N/A {0} N/A {0}
Description N/A N/A PUI Audio?'s unidirectional electret condenser microphones (ECMs) also known as cardioid microphones are purpose-built to only capture sound from one direction. Four holes on the rear of the microphone capsule focus the sweet spot of the microphone's polar pattern to directly in front of the microphone.

Excellent for use in recording a single acoustic source, unidirectional microphones are great as boom microphones to record sound at distance, rejecting unwanted noise, or are used in pairs for two-channel stereo recording.
Brands N/A PUI Audio™
Manufacturer N/A PUI Audio�, Inc.
Directivity N/A Unidirectional
Note for Directivity N/A N/A Minimum -12 dB drop in output at 180º±20º at 1 kHz
Sensitivity N/A -46 dB N/A -50 dB
Sensitivity Tolerance (±) N/A 4 dB
Testing Condition for Sensitivity N/A N/A 1 kHz at 50 cm
0 dB=1V/Pa
Direct Current (DC) Rated Voltage N/A N/A 2 V
Output Impedance at 1 Kilohertz (kHz) Frequency N/A N/A 0.68 kΩ
Direct Current (DC) Standard Operating Voltage N/A 2 V N/A
Maximum Operating Direct Current (DC) Voltage N/A 10 V N/A
Maximum Current Consumption N/A 0.5 mA N/A
Current Consumption N/A N/A 500 µA
Note for Current Consumption N/A N/A 3VS with 2.2 kΩ RL
Impedance N/A 2.2 kΩ N/A
Minimum Signal to Noise Ratio N/A 50 dB N/A
Signal to Noise Ratio N/A N/A > 55 dB
Note for Signal to Noise Ratio N/A N/A 1 kHz, 94 dB input, A-Weighted
Decreasing Voltage N/A N/A -3 V
Note for Decreasing Voltage N/A N/A 2VS to 1.5VS
Frequency Range1 N/A N/A 20 ~ 20000 Hz
Testing Condition for Frequency Range N/A N/A At 50 cm, -10 dB
Direct Current (DC) Operating Voltage Range N/A N/A 1 ~ 10 V
Maximum Sound Pressure Level (SPL) Input (Total harmonic distortion (THD) < 3 Percent (%)) N/A N/A 110 dB
Operating Temperature N/A N/A -20 ~ +60 ºC
Storage Temperature N/A N/A -40 ~ +70 ºC
Terminal Material N/A Solder Pads N/A
Weight N/A N/A < 0.3 g
High Temperature Test N/A N/A 200 hours at +60 ºC ± 3 ºC followed by two hours in normal room temperature
Low Temperature Test N/A N/A 200 hours at -20 ºC ± 3 ºC followed by two hours in normal room temperature
Humidity Test N/A N/A 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 N/A N/A 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 N/A N/A 10-55 Hz for 1 minute with 1.52 mm distance, followed by a two-hour 3 axis test in packaging
Drop Test N/A N/A Drop microphones in packaging onto concrete floor from 1-meter height in each of 3-axis
Electrostatic Discharge (ESD) Test N/A N/A
  1. Contact discharge - Discharge 6000 VDC from capacitor into microphone output through 330Ω resistor ten times.
  2. Air discharge - Discharge 8000 VDC into sound hole of the microphone ten times.
Note for Reliability Testing N/A N/A After each test, the speaker's SPL shall be ±3 dB of the original SPL
Height N/A N/A 5 mm
Diameter N/A 6 mm
Diameter Tolerance (±) N/A 0.1 mm
Angle Tolerance (±) N/A 3 º
Industry Standards N/A Restriction of Hazardous Substances (RoHS) 2011/65/EU
Features N/A N/A
  • -50 dB sensitivity at 50 cm
  • Cardioid shaped polar pattern for focused acoustic pickup
  • Integrated 33 pF and 10 pF buzz-blocking capacitors reduce GSM noise
Note N/A Specifications subject to change or withdrawal without notice.
  • 1 On-axis 0° measurement