Overview
Daishinku Corp., established in 1959 and headquartered in Kyoto, Japan, specializes in manufacturing quartz crystal devices under the KDS brand. The company produces over 500 million units annually, serving global markets with components essential for electronic timing applications. As a vertically integrated manufacturer, Daishinku controls the entire production process from crystal growth to final assembly, ensuring consistent quality. Their product line includes crystal units (XTAL), temperature-compensated crystal oscillators (TCXO), and surface-mount devices (SMD) for modern compact electronics.
Structure and Working Principle
KDS crystal devices utilize the piezoelectric properties of precisely cut quartz crystals. When voltage is applied, the crystal vibrates at a characteristic frequency determined by its physical dimensions and cut angle. The basic structure consists of a quartz blank sandwiched between electrodes in a hermetically sealed package. Advanced models incorporate ICs for temperature compensation (TCXO) or voltage control (VCXO). Daishinku's proprietary AT-cut and tuning fork crystals offer different performance characteristics for various applications.
Key Features
KDS components are renowned for frequency stability ranging from ±10ppm to ±0.5ppm in high-end models. Their products operate across temperatures from -40°C to +125°C, meeting automotive and industrial requirements. Miniaturization is a key strength, with package sizes down to 1.2×1.0mm for wearable devices. Low current consumption (as low as 0.8μA) makes them ideal for battery-powered IoT applications. The company holds numerous patents for shock-resistant designs and aging-resistant crystal processing techniques.
Application Areas
Telecommunications infrastructure represents the largest application sector, where KDS components provide clock synchronization for base stations and network equipment. Automotive electronics use them for ECU timing, TPMS sensors, and infotainment systems. Consumer electronics account for significant volume, particularly in smartphones, smartwatches, and WiFi modules. Industrial applications include measurement equipment, medical devices, and aerospace systems where timing precision impacts overall system performance.
Maintenance and Precautions
Crystal devices require careful handling to prevent performance degradation. Avoid exposing components to ultrasonic cleaning or excessive mechanical vibration during PCB assembly. Storage should be in dry, room-temperature conditions with ESD protection. When soldering, follow recommended temperature profiles to prevent thermal shock. For long-term reliability, maintain operating conditions within specified limits for voltage, load capacitance, and ambient temperature.
B2B Procurement Guide
Industrial buyers should specify parameters including frequency (MHz/kHz), stability (ppm), package dimensions, and operating temperature range. Lead times typically range from 4-12 weeks for standard products. Minimum order quantities vary by product type, with samples often available for qualification testing. Consider second-source alternatives for critical applications, though frequency-specific tuning may require manufacturer authorization. Pricing becomes competitive at reel quantities (typically 1,000-3,000 units per reel).
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