Components: Compact Audio Receivers Produce Big Sound

In a package measuring 4.3 mm wide by 5.6 mm deep by 2.8 mm high, the RBB-04A-PS 400-Ω and RBB-4B-PS 30-Ω audio receivers deliver high-quality sound. Their respective sensitivities are 1 kHz at 104 dB and 109 dB, and respective total harmonic distortion is 10% and 5%. Also, they reproduce voice audio on all bands, making them useful for cellular handsets, earphones, headsets, and communications equipment. Both are balanced-armature receivers that reproduce high-quality 3D sound. The 04A weighs 0.24 g and the 04B just 0.21 g. Minimum quantity pricing starts at $9.38. Delivery is within six to eight weeks.