These crystals are really cheap to buy for automotive applications, have a long service life, are available over the long term, can be delivered strategically and always oscillate very quickly and very reliably?

Due to their own interests, many market competitors recommend that users of automotive crystals use MHz oscillating crystals in 2.0x1.6mm/4pad or 32.768 kHz crystals in 1.6x1.2mm/2pad ceramic housings. From our point of view, there are much better and cheaper solutions.

These crystal types are available at low cost for automotive applications, have a long service life, are available over the long term, can be delivered strategically and always oscillate very quickly and very reliably.

Due to their own interests, many market competitors recommend that users of automotive crystals use MHz oscillating crystals in 2.0x1.6mm/4pad or 32.768 kHz crystals in 1.6x1.2mm/2pad ceramic housings. From our point of view, there are much better and cheaper solutions.

We are the only supplier in the world that can cover the frequency range from 8 - 285 MHz in the AT base tone in the 3.2x2.5mm/4pad ceramic housing. This allows the circuit designer to cover an extremely wide frequency spectrum in the same package, which saves design-in and qualification costs.

In addition, the automotive crystals in the 3.2x2.5mm/4pad SMD ceramic housing are also based on our exclusive LRT technology (Low ESR Resonator Technology). Due to the very low resistance of the LRT resonators, a significantly faster and very safe transient response of the LRT quartz crystal is made possible, so that the current consumption of the circuit is reduced and a lower power requirement results. This enables the developer to achieve a transient response safety factor (SF) of greater than or equal to 10 under all circumstances. Even with low frequencies. Our SMD automotive crystals are available in the temperature range of -40/+125°C. The frequency tolerance at +25°C is ±10ppm. In addition to the quartz resonators manufactured in-house, the strategically secure supply of these 3225 SMD quartz crystals is based on another key advantage. This is because we have our own ceramic housing for this quartz resonator series and are therefore independent of Japanese fine ceramic manufacturers in particular.

During the corona pandemic, we were also able to deliver 32,768 kHz crystals in a 3.2x1.5mm/2pad ceramic case within 6 - 8 weeks. The background is quite simple. Because we have our own case, we are independent of the Japanese fine ceramic manufacturers and can strategically supply this 32,768 kHz quartz series at short notice under all circumstances. During the MLLC allocation in 2018, the relevant users were asked to use small MLCC housings. This was intended to increase production volumes at the relevant MLCC manufacturers and improve delivery performance. Many of our market competitors are now taking the same approach and recommending that their customers use 1.6x1.0mm/2pad 32.768 kHz watch crystals instead of the much cheaper standard version in a 3.2x1.5mm/2pad ceramic housing. This recommendation is due to the fact that all these suppliers use the same Japanese ceramic case manufacturers for the corresponding cases and, in the event of supply difficulties of whatever nature, will no longer be able to supply these small 1610 SMD crystals that they have suggested themselves. In this case, not only supplier X, but also all other suppliers of these small watch crystals will not be able to do so, because they usually buy from the same ceramic case manufacturer - with the main production line in Malaysia. A disaster for the respective user companies. In addition, the much higher ESR of the 1.6x1.0mm/2pad quartz crystals must also be taken into account. This is because a 1610 crystal has a standard ESR of 90 kOhm at -40/+85°C. This can result in major transient response problems with many 32.768 kHz oscillator stages, as the minimum transient response safety factors (SF) of greater than or equal to 10 can no longer be achieved and the 1610 quartz crystals therefore only transient very poorly or not reliably at all.

This is not the case with our 3215 32.768 kHz crystals. These have an ESR of 50 kOhm max. as standard and can optionally be supplied with a frequency tolerance of ±10ppm at +25°C (standard is ±20ppm at +25°C) in the temperature range of -40/+125°C. Thanks to our own housing, we are completely independent of any fine ceramic manufacturers and their interests. This means that we can supply SMD watch crystals in 3.2x1.5mm/2pad ceramic housings very reliably under all circumstances. Today, as well as tomorrow. Once designed in, always available.