Design and specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use.

Whenever a doubt about safety arises from this product, please contact us immediately for technical consultation.

Microphone Cartridges

Omnidirectional Back Electret

Condenser Microphone Cartridge

Series:

WM-61A

I Sensitivity

I Specifications

Sensitivity

–35

±4dB (0db = 1V/pa, 1kHz)

Impedance

Less than 2.2 k

Directivity

Omnidirectional

Frequency

20–20,000 Hz

Max. operation voltage

10V

Standard operation voltage

2V

Current consumption

Max. 0.5 mA

Sensitivity reduction

Within –3 dB at 1.5V

S/N ratio

More than 62 dB

I Typical Frequency Response Curve

I Dimensions in mm (not to scale)

WM-61A

WM-61B

3.4

1.5

Term 1

output

Term 2

ground

3.4

Term 1

output

Term 2

ground

+20

+10

0

–10

–20

–30

20

50

100

200

500

1000

2000

5000

10000

20000

Frequency (Hz)

Vs = 2.0V

RL = 2.2k

–35

± 4dB

I Features

G Small microphones for general use

G Back electret type designed for high resistance to

vibrations, high signal-to-noise ratio

G High sensitivity type

G Microphone with pins for flexible PCB (WM-61B type)

Ω

Ω