CN103840787A - Quartz crystal resonator base - Google Patents

Abstract

The invention discloses a quartz crystal resonator base. The quartz crystal resonator base comprises a substrate, wherein the upper portion of the substrate is covered with an outer shell. The substrate, insulators and a lead form the base. The distance between the outer ends of two reeds is 4.5mm, wherein the reeds are arranged in the outer shell, used for supporting a quartz crystal and connected to a nailhead of the lead. The center spacing between the two insulators is 3.75mm, the height of the substrate is 0.7mm, the dimension of a quartz wafer is 4.2*1.8mm, the frequency range is 4MHz-50MHz, the overtone frequency range is 30MHz-125MHz, and the pressure seal mode is encapsulation in a resistance welding mode. The included angles between the reeds and the substrate are 6-8 degrees. According to the quartz crystal resonator base, the defects in the prior art are overcome, and the application range is wider. Due to the fact that the length is 7.3mm, articles which cannot be placed on a quartz crystal resonator base with the length being 2.5mm or less than 2.5mm can be placed. Meanwhile, the frequency can achieve 4MHz-50MHz, the frequency difference can achieve +/-10ppm, and aging per year is 5ppm.

Description

Quartz crystal resonator base

Technical field

The present invention relates to quartz crystal resonator base technical field of structures, particularly a kind of quartz crystal resonator base.

Background technology

Quartz crystal resonator base operation principle is a kind of resonating device that utilizes the inverse piezoelectric effect of quartz crystal (silicon dioxide, single crystals structure α quartz) to make.Quartz crystal resonator base has become the vitals of digital code information society from now at present, and its field, staple market is that the communications field, industry are used, people's livelihood electronic device field; That quartz crystal unit has is high-accuracy, the feature of high stability, extensive use with need in the various kinds of equipment, instrument, electronic product of frequency stabilization and frequency-selecting, be indispensable key element in current electronic product.Because the development trend of electronic product is multifunction; The functions such as Internet, E-Mail, GPS, photograph, shooting, large scale color LCD screen are adopted in a large number, welding circuit board develops into Reflow Soldering by wave-soldering, so surface mount and highly low miniaturization product become the developing direction of quartz crystal resonator base.But in existing quartz crystal resonator base miniaturization process, for undue pursuit miniaturization has been abandoned much main points such as frequency difference, annual aging and stabilized frequency.

Summary of the invention

The object of the present invention is to provide one can make up prior art deficiency, a kind of quartz crystal resonator base that can miniaturization can take into account again frequency difference, annual aging and stabilized frequency is provided.

Quartz crystal resonator base of the present invention, is achieved through the following technical solutions;

Quartz crystal resonator base, comprise the substrate of top covering shell, substrate and insulator, lead-in wire form pedestal, on the ailhead of lead-in wire, connect that to establish be 4.5mm for the reed two reed outer end spacing that support quartz crystal in the enclosure, two insulator center distance are 3.75mm, and the height of substrate is 0.7mm, quartz wafer is 4.2*1.8mm, frequency range 4MHz ~ 50MHz, overtone frequency scope 30MHz ~ 125MHz, press seal mode is that electric resistance welding mode encapsulates; Angle between reed and substrate is 6 ~ 8 °.

Further, two reed outer end spacing are 3.5 ~ 4.5mm, two insulator center distance 3.75mm, and the height of substrate is 0.4 ~ 0.7mm, quartz wafer is (3.5 ~ 4) * 1.8mm.

Further, resonator length 8mm and following, width is 3mm and following, and wire type resonator height is 2.0mm and following, and surface attaching type resonator height is 2.5mm and following.

Further, resonator length is 6.5 ~ 8mm, and width is 2 ~ 4mm, and wire type resonator height is 1.5 ~ 1.8mm, and surface mount type resonator height is 2 ~ 2.5mm.

Quartz crystal resonator base, concrete scheme is:

1) quartz wafer is selected: 4.2*1.8 quartz wafer;

2) shell: the wide * height of long * of shell sizes is 7.3mm*2.6mm*1.5mm;

3) substrate: the wide * height of long * of sizes of substrate is 7.3mm*2.6mm*0.7mm;

4) insulator: the diameter * height of insulator sizes is Φ 1.1mm*1.0mm.

In sum, quartz crystal resonator base provided by the present invention has the deficiencies in the prior art of having made up, the scope of application is wider, because length is 7.3mm, the thing that before can putting down, 2.5mm and following height quartz crystal resonator base fail to lay down, frequency can reach 4MHz ~ 50MHz, can reach ± 10ppm of frequency difference simultaneously, the old 5ppm that turns to, simultaneously novel quartz crystal resonator base is saved 30% material.

Brief description of the drawings

Fig. 1 is the structure chart of the quartz crystal resonator base of the embodiment of the present invention.

Wherein, 1 substrate; 2, reed; 3, insulator; 4, lead-in wire.

Embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.

-as shown in Figure 1, quartz crystal resonator base, comprise the substrate 1 of top covering shell 1, substrate 1 forms pedestals with insulator 3, lead-in wire 6, connects that to be located in shell 1 be 4.5mm for the two reed 2 outer end spacing that support quartz crystal on the ailhead of lead-in wire 4, two insulator 3 center distance are 3.75mm, the height of substrate 1 is 0.7mm, and quartz wafer is 4.2*1.8mm, frequency range 4MHz ~ 50MHz, overtone frequency scope 30MHz ~ 125MHz, press seal mode is that electric resistance welding mode encapsulates; Angle a between reed 2 and substrate 1 is 6 ~ 8 °.Further, two reed 2 outer end spacing are 3.5 ~ 4.5mm, two insulator 3 center distance 3.75mm, and the height of substrate 1 is 0.4 ~ 0.7mm, quartz wafer is (3.5 ~ 4) * 1.8mm.Further, resonator length 8mm and following, width is 3mm and following, and wire type resonator height is 2.0mm and following, and surface attaching type resonator height is 2.5mm and following.Further, resonator length is 6.5 ~ 8mm, and width is 2 ~ 4mm, and wire type resonator height is 1.5 ~ 1.8mm, and surface mount type resonator height is 2 ~ 2.5mm.

Quartz crystal resonator base core technology of the present invention is that frequency difference is less than 10ppm, and annual aging characteristic is lower than 5ppm, and frequency range is 4MHz ~ 50Mhz.

Manufacture principle:

1) quartz wafer is selected: 4.2*1.8 quartz wafer;

2) shell: the wide * height of long * of shell sizes is 7.3mm*2.6mm*1.5mm;

3) substrate: the wide * height of long * of sizes of substrate is 7.3mm*2.6mm*0.7mm;

4) insulator: the diameter * height of insulator sizes is Φ 1.1mm*1.0mm.

Although by reference to the accompanying drawings the specific embodiment of the present invention is described in detail, should not be construed as the restriction of the protection range to this patent.In the described scope of claims, the various amendments that those skilled in the art can make without creative work and distortion still belong to the protection range of this patent.

Claims (5)

1. quartz crystal resonator base, comprises substrate (1), and substrate (1) forms pedestal with insulator (3), lead-in wire (4), on the ailhead of lead-in wire (4), connects and is located in shell (1) for supporting the reed (2) of quartz crystal; It is characterized in that: two reeds (2) outer end spacing is 4.5mm, two insulators (3) center distance is 3.75mm, the height of substrate (1) is 0.7mm, quartz wafer is 4.2*1.8mm, frequency range 4MHz ~ 50MHz, overtone frequency scope 30MHz ~ 125MHz, press seal mode is that electric resistance welding mode encapsulates; Angle (a) between reed (2) and substrate (1) is 6 ~ 8 °.

2. quartz crystal resonator base according to claim 1, it is characterized in that: two reeds (2) outer end spacing is 3.5 ~ 4.5mm, two insulators (3) center distance 3.75mm, the height of substrate (1) is 0.4 ~ 0.7mm, quartz wafer is (3.5 ~ 4) * 1.8mm.

3. quartz crystal resonator base according to claim 1, is characterized in that: resonator length 8mm and following, and width is 3mm and following, and wire type resonator height is 2.0mm and following, and surface attaching type resonator height is 2.5mm and following.

4. quartz crystal resonator base according to claim 3, is characterized in that: resonator length is 6.5 ~ 8mm, width is 2 ~ 4mm, and wire type resonator height is 1.5 ~ 1.8mm, and surface mount type resonator height is 2 ~ 2.5mm.

5. quartz crystal resonator base according to claim 1, is characterized in that:

1) quartz wafer is selected: 4.2*1.8 quartz wafer;

2) shell: the wide * height of long * of shell sizes is 7.3mm*2.6mm*1.5mm;

3) substrate: the wide * height of long * of sizes of substrate is 7.3mm*2.6mm*0.7mm;

4) insulator: the diameter * height of insulator sizes is Φ 1.1mm*1.0mm.

Images