Why are low ESR values important for SMD oscillating crystals?
Low ESR values are important for SMD oscillating crystals because they support faster and safer oscillation of the oscillator circuit and can therefore improve functional reliability, energy efficiency and product performance.
The ESR value describes the equivalent series resistance of the quartz resonator. The lower this resistance, the easier it is for the oscillator circuit to safely excite the crystal.
In modern electronic designs, microcontrollers, radio ICs, sensors and RTC circuits often work with low supply voltages and very low currents. This reduces the reserves of the oscillator circuit (XIN/XOUT of the IC). An oscillator crystal with too high an ESR can cause the circuit to oscillate with a delay, unsafely or, in the worst case, not at all.
A low ESR value increases the starting reserve (transient response safety factor). This is particularly important for battery-operated devices, smart meters, IoT products, wireless modules, medical technology, industrial electronics and automotive applications. In these areas, it is not only frequency accuracy that counts, but also safe function across temperature, service life and manufacturing tolerances.
Why is PETERMANN-TECHNIK the right partner for LOW-ESR oscillating crystals?
PETERMANN-TECHNIK GmbH specialises in SMD oscillating crystals, clock crystals and oscillators and, with its LRT technology, offers a particularly powerful LOW-ESR solution based on 31 patents. Our LRT quartz crystals are designed to combine low resistance, safe oscillation and robust series performance.
For the customer, this means less risk during design-in, greater functional reliability and better conditions for energy-efficient products. PETERMANN-TECHNIK supports developers not only with data sheets, but also with technical advice, product selection, cross-referencing and sample support. This is how an oscillating quartz crystal becomes a very safe clock solution.
