Low cost SMD crystal is good between -40 +125°C

17th December 2008

ES Admin

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Petermann-Technik's SMD crystal in a metal package, the HC-49/US-SMD series, is the lowest cost SMD package and now also available in the extended temperature range of –40°C to +125°C. The 3pad package is new. The 3rd pad can be connected to ground. This package grounding has the big advantage of EMI reduction and the amelioration of the crystal fixation on the board - 33% more soldering connection than the common 2pad package.

The electrical parameters do not change. The switch from the common 2pad to the new 3pad package can be handled without extensive tests.

A frequency tolerance of +-5ppm at 25°C and a frequency stability from +-5ppm (0°C to +50°C) are possible.

In the normal production process we achieve temperature stabilities of between +-100ppm and +-150ppm over a temperature range of -40°C to +125°C.

The layout of the SMD crystal HC-49/US-SMD is the same as that of the competition. This compatibility makes the HC-49/US-SMD a direct drop in replacement.

The SMD crystal HC-49/US-SMD can be used for all applications where a miniaturised low cost and high performance crystal clock generator is required.

The crystals in the HC-49/US-SMD series of PETERMANN-TECHNIK are manufactured exclusively in clean rooms and only crystal blanks are used that come from our own production. In this way the HC-49/US-SMD series offers its users the absolute best possible quality. If needed, this crystal can also be qualified to the automotive norm,
AEC-Q200REV-C.

The extensive depth of manufacturing processes enables PETERMANN-TECHNIK to achieve excellent yields. In this way we can offer low prices together with exceptional quality. This is of course also true for customer specials.

The HC-49/US-SMD crystals are lead (Pb) free and are RoHS (Restriction of the use of certain hazardous substances in electrical and electronic equipment) conform according to the EU directive 2002/95/EG. The products of PETERMANN-TECHNIK can be soldered according to JEDEC Norm J-STD-020C (Reflow), JESD22-B106-C (Wave) and the