SJK high-performance RTC (Real-Time Clock) modules deliver continuous, reliable timekeeping for industrial, automotive, IoT and low-power embedded systems, maintaining accurate timestamps even when main power is cut off.

Our portfolio covers standard low-power, high-precision temperature-compensated, AEC-Q200 automotive-grade, and ultra-compact SMD variants. The 3V operating current can be as low as 45nA, supporting multi-year battery-powered standby, with ±1ppm accuracy at 25°C (less than 0.09 seconds daily drift) and a -40°C to +125°C operating temperature range for harsh environments.

All SJK RTC modules integrate a built-in 32.768kHz tuning fork crystal, eliminating the need for additional calibration components. They support I²C and SPI interfaces, with package sizes ranging from 2.0 × 1.2 mm ultra-compact SMD to the mainstream 3.2 × 1.5 mm footprint, ensuring compatibility with common PCB layouts.

These modules are ideal for industrial equipment timestamp logging, IoT terminal synchronization, wearable low-power wake-up, and smart meter time management. They also feature optimized EMI resistance for industrial environments and an automatic backup power switching circuit that requires no manual configuration.

Compared with MCU-integrated RTCs, SJK standalone RTC modules prevent timing drift caused by MCU shutdown, helping extend system service life by more than 50%. All products support free sample applications, PDF datasheet downloads, and professional technical selection support.