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HFF fundamental crystals

Product catalog summary

Introduction
KVG Quartz Crystal Technology has developed a production line for High Frequency Fundamental Crystals to meet the demands for miniaturization and higher frequencies in modern crystal applications. These crystals are designed for use in voltage-controlled oscillators, offering advantages in cost, size, and reliability.

Specifications
The product line includes crystals with flat and MESA structured quartz blanks, supporting high frequencies in fundamental mode up to 200MHz. The typical data for these crystals are as follows:

Overtone Frequency Range: 50 - 200 MHz for 1st overtone, 150 - 320 MHz for 3rd overtone
C1: 2.5 - 15 fF for 1st overtone, 0.3 - 4.0 fF for 3rd overtone
C0: 1.0 - 8.0 pF
Q Factor: 35 - 10 * 1000 for 1st overtone, 60 - 10 * 1000 for 3rd overtone

Adjustment tolerance is ± 10 ppm at 25°C, with temperature stability of ± 20 ppm from -20 to +70°C, and aging at ± 3 ppm per year max.

Standard Frequencies
The standard frequencies available are 44.736 MHz, 51.840 MHz, 61.440 MHz, 65.536 MHz, 68.736 MHz, 69.545 MHz, 139.264 MHz, and 155.520 MHz.

Enclosures
The crystals are available in various enclosures, with dimensions provided for HC-5 2/U models. SMD versions come with a metal clip.

Catalog excerpts

Modern crystal applications require further miniaturisation and higher frequencies. In response to these market trends KvG has installed an innovative production line for High Frequency Fundamental Crystals. The product line includes crystals with flat and MESA structured quartz blanks for high frequencies in fundamental mode up to 200MHz. For voltage controlled oscillators the high fundamental frequencies offer the benefit of higher pullability compared to an overtone crystal design. Furthermore, the high frequencies in fundamental mode reduce the need for frequency multiplying. Oscillators designed with such crystals have distinctive advantage in cost, physical size and reliability. All dimensions in mm (max), SMD versions with metal clip KVG Quartz Crystal Technology D-74922 Neckarbischofsheim P.O.B. 61 74924 Neckarbischofsheim Waibstadter Strasse 2 - 4 Tel: +49 (0) 7263 / 648 - 0 Fax: +49 (0) 7263 / 6196 e-mail:[email protected] Handelsregister: Amtsgericht Mannheim Nr. 340185 Geschaftsfuhrer: M. Klimm; G. Krauskopf

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HFF fundamental crystals

HFF fundamental crystals

Catalog excerpts

All KVG Quartz Crystal Technology GmbH catalogs and technical brochures