The SP0103NC3-2 from Knowles is a sophisticated surface-mount microphone solution within the audio products category, specifically engineered as a SiSonic microphone with integrated amplification capabilities. This component addresses the critical design challenge of capturing high-quality audio in space-constrained applications while providing built-in signal conditioning through its 20dB gain amplification, eliminating the need for external amplifier circuits and thereby simplifying PCB layouts and reducing overall system costs.
This microphone features an internal amplifier with 20dB gain, which significantly boosts the audio signal at the source, improving signal-to-noise ratio and ensuring cleaner audio transmission to downstream processing circuits. The surface-mount design allows for automated assembly processes and enables integration into compact electronic devices where traditional through-hole components would be impractical. Available in cut tape packaging with 2652 units in stock, this format facilitates both prototype development and volume production requirements, offering flexibility for various manufacturing scales.
The primary advantages include the integrated amplification that reduces external component count, the compact SMD footprint that conserves valuable board space, enhanced audio performance through optimized signal conditioning, and the reliability associated with Knowles' proven MEMS microphone technology. This component is particularly well-suited for applications in consumer electronics such as smartphones, tablets, laptops, and wearable devices, as well as professional audio equipment, hearing aids, automotive hands-free systems, IoT devices, voice-activated controls, and conferencing equipment where high-quality audio capture in minimal space is essential.
Regarding equivalent or alternative models, Knowles offers several comparable SiSonic microphones with varying gain levels and acoustic characteristics, including the SPH0641LU4H-1, SPH0645LM4H-B, and SPU0410LR5H-QB models. Other manufacturers providing similar MEMS microphones with integrated amplification include the Infineon IM69D130 series, STMicroelectronics MP34DT series, TDK InvenSense ICS-43434 and ICS-43432, and Vesper VM1010. The selection among these alternatives depends on specific requirements such as sensitivity, frequency response, power consumption, and acoustic port configuration for your particular application.
SP0103NC3-2 (1)
SP0103NC3-2 Key Technical Attributes
Manufacturer Part Number: SP0103NC3-2
Main Category: Audio Products
Small Classification: Microphones
SP0103NC3-2 Packing Size
The SP0103NC3-2 microphone is provided in a Cut Tape (CT) packaging format, ideal for automated SMD assembly lines and supporting large-scale manufacturing efficiency. Its compact SMD (Surface-Mount Device) design allows for easy integration into PCB layouts, offering a minimal footprint suitable for modern, space-constrained electronic devices. The component is typically built with robust, high-quality materials to optimize durability and ensures consistent electrical and thermal performance, withstanding the soldering process without degradation. The package includes clear pin configuration markings for correct orientation and installation during the PCB assembly process.
SP0103NC3-2 Application
The SP0103NC3-2 is predominantly used in audio capture applications across a wide range of consumer and industrial electronics. Common uses include mobile devices, hearing aids, portable audio recorders, IoT sensors, smart speakers, and other systems requiring high-fidelity sound input. Its compactness and SMD format make it ideal for any product where both space and audio quality are a priority.
SP0103NC3-2 Features
This model incorporates a Sisonic SMD microphone equipped with an integrated amplifier that provides a 20 dB gain, optimizing small signal audio capture with minimal noise. The on-chip amplification significantly reduces the need for external circuitry, streamlining system design and minimizing signal loss resulting from PCB trace routing. The microphone is notable for its high sensitivity, low distortion, and excellent signal-to-noise ratio, making it well-suited for voice recognition, communication devices, and professional audio equipment. Additionally, the SP0103NC3-2 is designed to exhibit low power consumption, supporting extended battery life in portable or wearable applications. The surface-mount construction also enhances automated board assembly and long-term reliability.
SP0103NC3-2 Quality and Safety Features
The SP0103NC3-2 meets rigorous industry standards for reliability and safety. It provides consistent audio performance over its operational lifespan, with tolerance to temperature variations and environmental stress. The SMD package protects the microphone internals from contaminants such as dust and humidity, ensuring stable operation even in challenging environments. All production lots are subjected to strict quality assurance and compliance testing, in line with international safety and quality certifications.
SP0103NC3-2 Compatibility
Thanks to its SMD package and standardized electrical characteristics, the SP0103NC3-2 is compatible with various modern PCB assembly processes and controller ICs. It can be seamlessly integrated with a wide variety of audio amplification and processing solutions, making it an excellent choice for both new designs and legacy system upgrades.
SP0103NC3-2 Datasheet PDF
Our website offers the most authoritative and up-to-date datasheet for the SP0103NC3-2 model. This datasheet provides detailed electrical, mechanical, and application information essential for accurate design integration. We highly recommend customers download the datasheet from this page to access all pertinent technical and application data for the Knowles SP0103NC3-2 microphone.
Quality Distributor
IC-Components is a trusted premium distributor of Knowles products. We guarantee only genuine and high-quality components, supported by professional supply chain services. For the best price and availability, we encourage customers to request a quote directly through our website. Let us be your reliable partner in sourcing the Knowles SP0103NC3-2, ensuring both quality and efficiency in your procurement process.





