| Performance | 
                      
                        | Nominal Microphone Diameter | 1/4" | 1/4" |  | 
                      
                        | Frequency Response Characteristic | Pressure | Pressure |  | 
                      
                        | Open Circuit Sensitivity (±3 dB) | -60 dB re 1 V/Pa | -60 dB re 1 V/Pa | [2] | 
                      
                        | Open Circuit Sensitivity | 1.0 mV/Pa | 1.0 mV/Pa | [2] | 
                      
                        | Frequency Range (±2 dB) | 4 to 70000 Hz | 4 to 70000 Hz |  | 
                      
                        | Lower Limiting Frequency (-3 dB) | 0.25 to 3.0 Hz | 0.25 to 3.0 Hz |  | 
                      
                        | Resonant Frequency (90° Phase Shift) | 65000 Hz | 65000 Hz | [1] | 
                      
                        | Inherent Noise | <35 dB(A) re 20 µPa | <35 dB(A) re 20 µPa |  | 
                      
                        | Dynamic Range(3% Distortion Limit) | 174 dB re 20 µPa | 174 dB re 20 µPa | [1] | 
                      
                        | Environmental | 
                      
                        | Temperature Range (Operating) | -40 to +248 °F | -40 to +120 °C |  | 
                      
                        | Temperature Coefficient of Sensitivity (+14 to +122°F (-10 to +50°C)) | 0.004 dB/°F | 0.007 dB/°C | [1]
																	
																	[2] | 
                      
                        | Static Pressure Coefficient | -0.003 dB/kPa | -0.003 dB/kPa | [1]
																	
																	[2] | 
                      
                        | Humidity Coefficient of Sensitivity (0 to 100%, non-condensing) | ±0.0012 dB/%RH | ±0.0012 dB/%RH | [2] | 
                      
                        | Influence of Axial Vibration (0.1g (1 m/s²)) | 66 dB re 20 µPa | 66 dB re 20 µPa | [1] | 
                      
                        | Electrical | 
                      
                        | Capacitance (Polarized) | 5 pF | 5 pF | [1] | 
                      
                        | Polarization Voltage | 0 V | 0 V | [3] | 
                      
                        | Physical | 
                      
                        | Housing Material | Stainless Alloy | Stainless Alloy |  | 
                      
                        | Venting | Rear | Rear |  | 
                      
                        | Mounting Thread | 0.2244 - 60 UNS | 5.7 mm - 60 UNS |  | 
                      
                        | Mounting Thread | 0.25 - 60 UNS | 6.35 mm - 60 UNS |  | 
                      
                        | Size - Diameter (with grid) | 0.28 in | 7.0 mm |  | 
                      
                        | Size - Diameter (without grid) | 0.25 in | 6.4 mm |  | 
                      
                        | Size - Height (with grid) | 0.41 in | 10.5 mm |  | 
                      
                        | Size - Height (without grid) | 0.36 in | 9.1 mm |  | 
                      
                        | Weight | 0.06 oz | 1.8 gm | [1] |