Safe LRT oscillating crystals for your applications

LRT - vibrating quartz crystals for very safe applications

LRT stands for our exclusive LOW ESR Resonator Technology and sets the standard in the manufacture of quartz resonators. The dimensions of the quartz resonator for generating a specific frequency are matched to the corresponding housing and the quartz resonator itself is sawn out of a synthetic quartz block of the highest purity using a cutting angle specified via 4 coordinates (normally AT-cut or AT-CUT). The resonator is then lapped in several stages, pre-metallised, mounted in the housing and then final metallised before the housing is sealed in a vacuum environment. That is the simplified theory. In practice, however, we rely on 31 patents for the production of the SMD LRT resonant crystals we supply and exclusively develop and manufacture resistance-optimised resonator designs ourselves, so that we achieve outstanding results. Customers who purchase LRT resonant crystals from us already appreciate this enormous advantage of our LRT technology. Compared to competitor products, our 100% tested LRT resonant crystals offer significantly lower resistances, which brings significant advantages to the user.

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The very low resistance of our innovative LRT quartz crystal enables significantly faster and safer transient behaviour, which reduces the current consumption of the circuit and results in lower power requirements. In this way, we support our customers not only in their technical performance, but also in their efforts to achieve sustainability and energy efficiency.

Maximum product reliability from delivery batch to delivery batch, as only quartz resonators developed and manufactured in-house are used in our SMD LRT quartz crystals. This means that we can always supply the same LRT resonator design for the corresponding product purchased from us, for many years to come.

Excellent quality and product performance is guaranteed by the 100% testing of the SMD LRT resonator crystals we supply. This is because everything from the raw quartz material to the end product is under the control of the quality assurance department. Pure quality promise, for very durable SMD LRT oscillating crystals.

Naturally, LRT crystals are also used in our oscillators. This means that users of our oscillators can also benefit from LRT resonator technology. In addition to the excellent performance, top quality and longevity of our oscillators, another key advantage of LRT crystal technology is the low power consumption, even at high frequencies.

When we measure our SMD LRT crystals in customer circuits in comparison to the competition, we find that our LRT oscillator crystals

with the very low resistances oscillate very quickly and very reliably in all customer circuits. Even in circuits with ICs whose oscillator stages do not have a good negative input resistance, or the negative input resistance of the oscillator stages of the ICs in the series scatters. This means that the transient response safety factor (SF) for our SMD LRT crystals is always very high, allowing the application designer to develop an extremely reliable circuit at any time by using our LRT crystals. Quick and easy. Connect the crystal to the IC via a short cable, install external circuit capacitances or programme the corresponding capacitances internally, and the very safe circuit with our LRT oscillating crystal is ready.

Very high transient response safety factors in the circuits are very important for the product safety of the corresponding end product. Particularly in battery-operated applications, the use of our resistance-optimised LRT quartz oscillators can reduce system energy and thus significantly increase battery life. Because our LRT crystals oscillate extremely quickly and reliably due to their very low resistance, much less energy is required to operate the IC. The very high frequency accuracy and the resulting range advantages provide enormous support, so that telegram transmissions can be completed very quickly without having to be repeated.

In which housings are LRT oscillating crystals available?

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In all our THT and SMD housings. Regardless of whether they are metal or ceramic housings. In new designs, however, only miniaturised SMD oscillating crystals in ceramic housings with the dimensions 3.2x2.5mm (our SMD03025/4 series), 2.0x1.6mm (our SMD02016/4 series) or 1.6x1.2mm (our SMD01612/4 series) are used. Depending on the housing, we can cover the frequency spectrum from 8 - 285 MHz in the fundamental frequency with these LRT quartz versions. If lower frequencies with even lower resistances are required, we recommend using the LRT oscillating crystals in 7.0x5.0mm/4pad or 7.0x5.0mm/2pad, in 6.0x3.5mm/4pad or 6.0x3.5mm/2pad, or in 5.0x3.2mm/4pad or 5.0x3.2mm/2pad. For new developments, please consult our specialists. If you would like a replacement for competitor products, click here.

Our specialists will always recommend the optimum low-resistance SMD LRT crystals with MHz and kHz frequencies for your application. This is cost-effective for you, because our LRT resonator technology corresponds to our production standard and therefore costs nothing extra, but is simply supplied as standard performance so that you can develop an application with the highest performance, product and functional reliability and manufacture it in series for many years. It goes without saying that our LRT oscillating crystals are reliable and available within a short delivery time. In addition to a very extensive product range, our range of expertise includes a comprehensive design-in service as a real added value, which also includes very effective in-circuit tests of our SMD LRT oscillating crystals.

Not only can you contact us easily via our website(info(at)petermann-technik.de), you can also configure the desired product in each product group and enquire about it via the corresponding menu items, or request sample crystals immediately. Everything is quick and easy so that we can support our customers quickly and reliably. In the 26 years of our company history, we have established ourselves as the experts for quartz crystals and oscillators. Benefit from our experience - your success is our goal!

FAQs

What are LRT quartz crystals and what are the advantages of LOW ESR Resonator Technology?

LRT resonant crystals are resistance-optimized quartz resonators from PETERMANN-TECHNIK that are based on the exclusive LOW ESR Resonator Technology. The aim of this technology is to achieve particularly low ESR values and thus significantly improve the electrical behavior of the quartz crystal in the application. A lower resistance supports a faster and safer transient response of the oscillator in the customer circuit. At the same time, the current consumption can be reduced, which favors energy-efficient designs. For industrial applications, this means high functional reliability, stable performance and long-term reliable results.

Which frequency ranges are covered by SMD LRT oscillating crystals from PETERMANN-TECHNIK?

The miniaturized SMD LRT oscillating crystals from PETERMANN-TECHNIK cover a frequency spectrum of 8 to 285 MHz in the fundamental tone, depending on the housing. The ceramic housings 3.2x2.5 mm, 2.0x1.6 mm and 1.6x1.2 mm are used particularly frequently. Larger designs such as 7.0x5.0 mm, 6.0x3.5 mm and 5.0x3.2 mm are also available for lower frequencies and even lower resistances. These variants are available in both 2-pad and 4-pad versions. This means that LRT oscillating crystals can be flexibly adapted to different circuit requirements and modern electronic designs.

Why are low ESR values for quartz crystals so important for industrial circuits?

Low ESR values are crucial for oscillating crystals because they directly influence the oscillation behavior in the circuit. The lower the resistance of the resonator, the faster and safer the oscillator can start. This increases functional reliability, particularly in demanding industrial applications where a reliable start is essential. In addition, reduced current consumption can contribute to lower power requirements. LRT oscillating crystals from PETERMANN-TECHNIK are designed precisely to meet these requirements and therefore offer a clear advantage over many standard solutions.

In which designs and housing sizes are LRT oscillating crystals available?

LRT oscillating crystals from PETERMANN-TECHNIK are available in THT and SMD housings, regardless of whether metal or ceramic housings are required. In new designs, however, miniaturized SMD oscillating crystals in ceramic housings are mainly used. Typical sizes are 3.2x2.5 mm, 2.0x1.6 mm and 1.6x1.2 mm for compact electronics applications. If particularly low frequencies or further reduced resistances are required, larger formats such as 7.0x5.0 mm, 6.0x3.5 mm or 5.0x3.2 mm are suitable. This broad selection enables an application-oriented design for a wide range of industrial requirements.

How does PETERMANN-TECHNIK support the selection and integration of LRT oscillating quartz crystals?

PETERMANN-TECHNIK supports customers not only with a wide range of products, but also with a comprehensive design-in service. The specialists recommend the optimum low-resistance SMD LRT crystal in the MHz or kHz range for every application. The added value also includes effective in-circuit tests, which can be used to evaluate the behavior of the quartz crystals in the real customer circuit. The website can be used to configure products, make inquiries and quickly request sample crystals. This provides developers and purchasers with reliable, fast and practical support for new developments or when replacing competitor products.

Why PETERMANN-TECHNIK LRT vibrating quartz crystals?

PETERMANN-TECHNIK is the right choice for LRT resonant crystals because the exclusive LOW ESR Resonator Technology is used as the manufacturing standard and does not incur any additional costs. The resonant crystals are 100% tested and optimized for particularly low resistance, which leads to better transient response and higher operational reliability in many applications. Customers also benefit from short delivery times, high reliability and a wide range of designs and frequency ranges. With 26 years of experience in the field of quartz crystals and oscillators, the company has in-depth know-how for industrial B2B requirements. The range is complemented by expert advice, design-in support and the rapid provision of sample crystals.