Electrical Characteristics	U-602	U-62	U-60
1. Sensitivity	A: -57 +- 3dB B: -63 +- 3dB C: -69 +- 3dB		A: -60 +- 3dB B: -66 +- 3dB C: -72 +- 3dB
2. Output Impedence	Same as the load resistance. (May be 150 Ohm - 5 KOhm. The sensitivity is proportional to the load resistance.)
3. Directionality	Omnidirectional
4. Frquency Range	20-12,000 Hz		40-10,000 Hz
5. S/N Ratio	More than 40dB measured with A curve at 1 KHz at 1 micro-bar.
6. Self Noise Level	Less than 34dB SPL (Referred SPL 0dB=0.0002 micro-bar.)
7. Operation Voltage	1.5 to 15 VDC
8. Current Consumption	0.5 mA or less (Supply voltage 6V)
9. Polarity of Power Supply	(-) for ground
Electrical Circuit