Q-Tech Launches Tin-Lead “PB” TCXO Series with Complete Tin Whiskers Mitigation

Key Takeaways

Q-Tech Corporation introduces the AXLE7050S-PB, a tin-lead solder version of its temperature-compensated crystal oscillator (TCXO).
This model addresses tin whisker issues common in satellite applications, providing reliable performance in New Space environments.
The AXLE7050S-PB is available in various frequencies, complies with military standards, and ensures high radiation tolerance and low phase noise.

New Solder Technology for Reliable Oscillation

Q-Tech Corporation has launched a new version of its widely used temperature-compensated crystal oscillator, known as the AXLE7050S-PB. This model is notable for its use of tin-lead (SnPb) solder, a choice made specifically to mitigate the common problems associated with pure tin solder, particularly tin whisker formation that can occur in space applications.

The AXLE7050S-PB model maintains the low phase noise and radiation-hardened specifications of its predecessor while offering significant improvements in reliability. It includes SnPb solder for the components on the package’s surface and an SnPb finish for the internal high-reliability passive components. These features ensure the performance remains robust in challenging environments, such as those encountered in satellite operations.

Operating frequencies for the AXLE7050S-PB range from 10 to 50 MHz, accommodating different output needs with options for clipped sinewave (CSW) or HCMOS outputs. The device is designed under MIL-PRF-55310, Level S standards and comes in a compact hermetically sealed package measuring 7 x 5 x 1.8 mm. Additional performance metrics indicate high total ionizing dose (TID) radiation tolerance of 40 KRad(Si) and single event latch-up (SEL) immunity of greater than 90 MeV. Furthermore, the oscillator demonstrates low phase noise levels exceeding -155 dB at offsets above 100 KHz, alongside exceptional stability of less than ±1 ppm over a temperature range of -40°C to +85°C.

Henry Halang, managing director at Q-Tech’s European affiliate AXTAL, highlighted the creation of the AXLE7050S-PB in response to specific requests from New Space customers for a solution that effectively addresses strict tin whisker mitigation requirements, particularly within the U.S. market. The introduction of the “PB” version ensures that customers can utilize a high-reliability product while adhering to the necessary specifications for their applications.

Moreover, all AXTAL TCXOs, including the new AXLE7050S-PB, are developed and produced in Europe, ensuring compliance with regulations such as ITAR, thereby making them suitable for various international markets without legal complications.

In conclusion, Q-Tech Corporation’s AXLE7050S-PB represents a significant advancement for temperature-compensated crystal oscillators, especially within the New Space sector, where reliability and adherence to stringent standards are paramount. The combination of SnPb solder, rigorous military compliance, and proven performance metrics positions this new oscillator as a reliable choice for demanding applications.

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