Buy inexpensive 25 MHz SMD oscillating crystals for Single Pair Ethernet (SPE) applications
Since the early 1980s, the Ethernet standard has evolved from a simple communication method between computer networks to the most widely used protocol in industrial communication. Copper cables, whether 2-pair for Fast Ethernet or 4-pair for Gigabit Ethernet, form the backbone of many corporate and industrial networks. The introduction of Single Pair Ethernet (SPE) technology, inspired by developments in the automotive industry, is now opening up completely new fields of application. This technology makes it possible to replace traditional analog sensor applications or industrial bus systems with more efficient solutions.
Single Pair Ethernet (SPE) provides the necessary infrastructure for the Industrial Internet of Things (IIoT). With SPE, Ethernet can communicate from the cloud to the field level in a space- and cost-efficient manner for the first time. Single Pair Ethernet describes the transmission of Ethernet via just one pair of copper wires and, in addition to data transmission via Ethernet, also enables a simultaneouspower supply to end devices via PoDL - Power over Data Line. Previously, this required two pairs of wires for Fast Ethernet (100MB) or four pairs for Gigabit Ethernet. SPE now opens up completely new possibilities and fields of application for Industrial Ethernet.
Innovative clocking solutions for SPE technology
25 MHz SMD oscillating crystals are essential for clocking SPE ICs. Our customers use our 25 MHz crystals in different housing versions, which are used with SPE ICs from a wide range of manufacturers.
All our SMD resonant crystals are based on our unique, patented LRT resonator design. Quartz resonators based on our LRT technology are known for their innovative resonator design, outstanding quality and performance. These crystals are also characterized by a very long service life and reliability, thus guaranteeing many years of trouble-free operation of the corresponding applications. Particularly noteworthy is the continuous and reliable availability of our SMD crystals - even during the challenging times of the corona pandemic.
Our SMD crystals offer an excellent price-performance ratio and therefore make a significant contribution to increasing the efficiency and productivity of our customers.
Due to the very low resistance of our LRT oscillating crystals our innovative 25 MHz LRT crystals for Single Pair Ethernet applications have a significantly faster and safer transient response, which reduces the power 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. The highest level of product safety from delivery batch to delivery batch is of course guaranteed, 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 our quality assurance department. Pure quality promise, for very durable SMD LRT oscillating crystals.
Which housing versions/quartz specifications are currently preferred by customers?
The miniaturised 4Pad ceramic housing with the dimensions 3.2x2.5mm (quartz series SMD03025/4) is used in most applications. Oscillating crystals in a 3.2x2.5mm ceramic housing currently correspond to the cheapest quartz series ever. If this housing is too large for the application in question, the next smallest top-seller ceramic housing has the dimensions 2.0x1.6mm/4pad. For very small applications, the quartz frequency with 25 MHz can be supplied in a ceramic housing with the dimensions 1.6x1.2mm. With regard to the quartz parameters, the frequency tolerance at 25°C of ±20 ppm, the temperature stability of ±30 ppm above -40/+85°C or above -40/+105°C, or ±50 ppm above -40/+125°C have become established for SPE applications. The load capacitance is usually 12pF, but other load capacitances are also available.
Of course, we can also supply these SMD crystals in other versions. For this the or purchasers can use our exclusive product configuratorsso that the desired products can be configured in no time at all and immediately requested or samples ordered. PETERMANN-TECHNIK GmbH can also support the customer with a wide range of design-in activities during the development phase and series production.
Three sample specifications and the corresponding product configurators are linked here:
Of course, we can also supply these SMD crystals in other designs. Use our corresponding product configurators to define your desired specification, or order sample crystals directly from us via the Internet. Please use the following links:
Product configurator 3.2x2.5mm/4pad oscillating quartz
Product configurator 2.0x1.6mm/4pad oscillating quartz
Product configurator 1.6x1.2mm/4pad oscillating quartz
FREQUENCY CONTROLLED PRODUCTS - CRAFTED FOR EXCELLENCE.
PETERMANN-TECHNIK GmbH - your clocking experts since 1996. Driven by technology, top quality and security of supply!
FAQs
Which 25 MHz SMD oscillating crystals are suitable for Single Pair Ethernet (SPE) applications?
25 MHz SMD oscillating crystals are a central component for clocking SPE ICs. This page describes in particular LRT-based oscillating crystals in various package versions for these applications. The 4Pad ceramic housings in 3.2 x 2.5 mm, 2.0 x 1.6 mm and 1.6 x 1.2 mm have become established in many customer applications. These crystals are based on an exclusive, patented LRT resonator design and are designed for high quality and stable performance. This makes them particularly suitable for SPE applications where reliable clocking, longevity and economical procurement are important.
What are the advantages of LRT oscillating crystals for SPE ICs?
LRT resonant crystals are characterized by a very low resistance, which enables faster and safer transient response in the circuit. Especially with single pair Ethernet ICs, this can help to reduce the current consumption of the circuit and lower the power requirement. As a result, these crystals not only support the technical performance of the application, but also sustainability and energy efficiency goals. Users also benefit from high product reliability and consistent quality from delivery batch to delivery batch. This makes LRT-based 25 MHz SMD oscillating crystals particularly attractive for demanding industrial SPE designs.
What package sizes are available for 25 MHz SMD oscillating crystals in SPE applications?
Several miniaturized ceramic housings are available for SPE applications. In most applications, the 4Pad ceramic housing with 3.2 x 2.5 mm is used, which is also described as a particularly economical quartz series. If the size needs to be reduced, the smaller 2.0 x 1.6 mm top-seller housing is also available. For very compact designs, the 25 MHz frequency can also be supplied in a 1.6 x 1.2 mm housing. This means that the right SMD oscillating crystal design for Single Pair Ethernet can be selected depending on space requirements and application requirements.
Which typical crystal parameters are common for 25 MHz SPE oscillating crystals?
Certain parameters for 25 MHz SMD oscillating crystals have proven to be particularly suitable for SPE applications. A frequency tolerance at 25 °C of ±20 ppm and temperature stabilities of ±30 ppm over -40 to +85 °C or -40 to +105 °C are mentioned. For extended temperature ranges, a stability of ±50 ppm over -40 to +125 °C has also been established. The load capacitance is 12 pF in many cases, although other load capacitances are also available. These specifications help developers to precisely select the right crystal for the respective SPE circuit.
How is high reliability and delivery consistency ensured with SMD LRT oscillating crystals?
The high reliability of the SMD LRT oscillating crystals is based on a patented resonator design and a consistent 100% testing process. From the raw quartz material to the end product, everything remains under the control of the quality assurance department. In addition, only quartz resonators developed and manufactured in-house are used in the SMD LRT crystals. This means that the same approved LRT resonator design can be supplied for many years. For industrial customers, this means a high level of product safety, a long service life and trouble-free operation of their SPE applications.
Why buy PETERMANN-TECHNIK SMD oscillating crystals for Single Pair Ethernet (SPE) applications?
PETERMANN-TECHNIK offers 25 MHz SMD oscillating crystals for SPE applications with a very good price-performance ratio and high technical quality. The LRT crystals used impress with their low resistance, fast transient response, high reliability and long service life. Thanks to resonators developed and manufactured in-house and a 100% testing process, customers benefit from consistent quality and high delivery reliability. In addition, various housing sizes, configurable designs and sample orders are available directly via product configurators. PETERMANN-TECHNIK also supports developers and purchasers with design-in activities during the development phase and through to series production.
