Gallery View: Miniaturization trend spurs SMD, MEMS microspeaker releases

Makers of microspeakers are ramping up efforts to develop smaller types for use in mobile and wearable electronics.

For use in computers, automotive and consumer electronics, communications and medical applications, microspeakers in round, rectangular, square and oval variants make up the selection in China.

SMD types mainly for mobile electronics have been gaining the attention of local makers such as Bestar. The supplier introduced its SMS1010-08H04 LF model, which is as small as 10x10mm and has 1W rated power, 8ohm impedance and 1,200Hz±20 percent resonant frequency.

MEMS microspeakers, which are growing in popularity globally, have a few China manufacturers at present. Most come from foreign makers such as USound, Fraunhofer and Audio Pixels. Widely used in wearable devices and ear products, these advanced kinds have a wide frequency range, and high fidelity and sound pressure level.

Leading shipments of China suppliers are models for smartphones, tablet PCs and wearable devices. The units, which comply with CE, RoHS and UL requirements, have 0.1 to 5W rated power, 0 to 20kHz frequency response range, 70 to 115dB sound pressure level and 4 to 64ohm impedance.

The main components and materials in microspeaker production include magnets, baskets, voice coils, diaphragms, covers and glue. Most companies source them from local providers, turning to foreign suppliers only as required. The cost of inputs remained stable in the past year, keeping prices from fluctuating significantly. The same trends are projected in the months ahead.

The products in this gallery have been handpicked by our China-based market analyst for representing current trends in microspeakers from China makers.

Suits portable electronics

For portable electronics, this microspeaker from Changzhou Runyuda Electronics Co. Ltd, RYD-DMSP0916-1 model, has 500Hz to 10kHz frequency range, 850Hz±20 percent resonant frequency, 7ohm±20 percent rated impedance and 92±3dB sound pressure level. Its maximum and rated input power are 1 and 0.7W. The minimum order is 1,000 units. Delivery lead time is 15 days.

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11x15x3mm, 92±3dB SPL

This RoHS-compliant microspeaker from Changzhou Runyuda Electronics Co. Ltd, DMSP111506-116 model, has 92±3dB sound pressure level, 6ohm±15 percent rated impedance at 1V, 1kHz, 5.4ohm±15 percent coil resistance and 550Hz±20 percent resonant frequency in free air at 1Vrms, 10cm. The frequency range is 550Hz to 20kHz. The 11x15x3mm unit weighing 1.5g has 0.7W rated and 1W maximum input power. It operates in -20 to 70 C. An order of at least 2,000 units has a delivery lead time of 15 days.

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115±3dB SPL

Ningbo Deli Electronics Co. Ltd markets the model DLF28-1 microspeaker with 4, 8, 16, 32, 64, 100 or 150ohm±15 percent rated impedance, 850Hz±20 percent resonant frequency, 115±3dB sound pressure level and F0 to 20,000Hz frequency range. The 28x7.3mm component has a rated and maximum power of 0.5 and 1W. An order of one set is accepted. Delivery lead time is 7 days.

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15mm diameter, 4mm height

Model DLS1504-1 microspeaker from Ningbo Deli Electronics Co. Ltd has 87±3dB sound pressure level, 8ohm±15 percent rated impedance, 400Hz±20 percent resonant frequency and F0 to 20,000Hz frequency range. The component measuring 4mm in height and 15mm in diameter has a rated and maximum rated power of 0.5 and 1W. It operates in -20 to 50 C. An order of one set has a 7-day delivery lead time.

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36mm diameter, 88±3dB SPL

From Shenzhen Xuanda Electronics Co. Ltd, the model XDED-36M-3 microspeaker has 88±3dB sound pressure level, 8ohm±15 percent impedance, 560Hz±20 percent resonant frequency and F0 to 20kHz frequency range. The 36mm-diameter unit has a 0.5W rated and 1W maximum power. An order of at least 1,000 units is delivered within 15 days.

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40mm diameter, 110dB SPL

Measuring 40mm in diameter, Shenzhen Xuanda Electronics Co. Ltd's model XDED-40M-1 microspeaker has 110dB sound pressure level, 32, 50 or 100ohm impedance and 260Hz±20 percent resonant frequency. The unit with 0.1 to 0.5W rated power suits headphones, and smart home and security devices. The minimum order is 1,000 units. Delivery lead time is 15 days.

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