CN201260152Y - Drop impact resistant SMD quartz resonator - Google Patents

Abstract

The utility model relates to an SMD quartz resonator. A piezoid plated with electrodes is fixed in an aluminum oxide ceramic base seat by conducting resin in the silicon class and simultaneously forms an electrical connection with an external welding disc, and the piezoid is fixed in the aluminum oxide ceramic base seat by a three-point dispensing structure so as to form supporting and electrical connection. The utility model improves the falling resistance characteristic of the quartz resonator, simultaneously improves the frequency temperature characteristic of the quartz resonator, and can fully meet the requirements of falling resistance characteristic of portable equipment.

Description

The SMD quartz resonator of fall-shock durable

Technical field

The utility model is a kind of quartz resonator of fall-shock durable, especially can provide the quartz resonator of stable oscillation stationary vibration signal for requiring the comparatively harsh portable set of roll-off characteristic.

Background technology

When as shown in Figure 1, cutting quartz wafer 5 at present normally along the cutting of the X-X ' length direction of quartz wafer 5.As shown in Figure 3, present known SMD quartz resonator is by multi-layered ceramic pedestal 1, quartz wafer 5, silver electrode 7, conducting resinl 3,6 and metal cover board 9 (see figure 6)s are formed, quartz wafer is connected with the outside electrical equipment that forms by the conducting resinl of two dot structures, simultaneously wafer is provided a supporting role.

The defective of this structure is, can not provide and well fall tolerance, and promptly anti-drop characteristic can't satisfy the requirement of present portable equipment, can cause vibration to stop after 150CM falls.

The utility model content

Deficiency for the anti-drop characteristic that overcomes existing SMD quartz resonator, the utility model provides a kind of improvement to shelve the resonator of fixed structure, this resonator can not only have the very strong anti-characteristic of shaking: 150CM and add 150 gram counterweights and fall 60 secondary frequencies and impedance operator continuously all within the scope of specifications, and can also not change by the holding temperature characteristic curve.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of SMD quartz resonator, in the alundum (Al base of ceramic, with silicon is that the quartz wafer that conducting resinl will plate electrode fixes, while and external pads form and are electrically connected, quartz wafer is fixed in the alundum (Al base of ceramic by 3 some plastic structure, forms to support and be electrically connected.

The beneficial effects of the utility model are, can effectively improve the roll-off characteristic of quartz resonator, make it to use reliably in the comparatively harsh portable set of roll-off characteristic requirement, have enlarged the scope of application of quartz resonator.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the quartz wafer cut direction schematic diagram that the industry is used at present, and the wafer length direction is X-X ';

Fig. 2 is the wafer cut direction schematic diagram of the quartz resonator that relates to of the utility model, and length direction is Z-Z ';

Fig. 3 is the quartz resonator cut-away view that current industry is used;

Fig. 4 is the inner supporting structure figure of specific embodiment of the utility model;

Fig. 5 is the external pads structure chart of specific embodiment of the utility model, and #1-#4 totally 4 metal pads are arranged;

Fig. 6 is the exterior frontal view after specific embodiment of the utility model covers the metal cover board sealing.

In Fig. 3 and Fig. 4: 1. alundum (Al base of ceramic, 2. can cut down ring, 3,6,8 silicon are conducting resinl, 4. gold-plated conductor, 5. wafer, 7. electrode; In Fig. 6: 9. metal cover board.

Embodiment

Fig. 1 illustrates the cut direction of wafer 5, along Z-Z ' the length direction cutting of wafer 5.

Among Fig. 4, with silver shown in electrode 7 on the wafer vacuum evaporation or gold electrode shape, by increasing silicon is conducting resinl 8, make that silicon is that 3,6,8 pairs of wafers of conducting resinl form 3 supporting construction, while silicon is that pad #1, the pad #3 formation of conducting resinl 3,6,8 and Fig. 5 is electrically connected (pad #2, pad #4 are unsettled), silicon is that conducting resinl 3 is connected with pad #1, and silicon is that conducting resinl 6 is connected with pad #3, cover plate is covered just form the SMD quartz resonator with Fig. 6 structure.

The SMD quartz resonator of the utility model fall-shock durable utilizes silicon on existing base of ceramic be conducting resinl 3,6,8, form the supporting construction of 3 distributions, provide uniform support and fixation to quartz wafer, the cut direction of having improved quartz wafer 5 simultaneously (as shown in Figure 1 and Figure 2, the Cutting Length direction of quartz wafer changes Z-Z ' into by X-X '), do not change with the temperature characteristics of keeping quartz resonator, can reach like this and keep under the same electrical characteristic, strengthen the anti-drop characteristic of quartz resonator greatly.

Claims (2)

1. SMD quartz resonator, in the alundum (Al base of ceramic, with silicon is that the quartz wafer that conducting resinl will plate electrode fixes, while and external pads form and are electrically connected, it is characterized in that: quartz wafer is fixed in the alundum (Al base of ceramic by 3 some plastic structure, forms to support and be electrically connected.

2. SMD quartz resonator according to claim 1 is characterized in that: the Cutting Length direction of quartz wafer changes Z-Z ' into by X-X '.

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