美國FOX推出小尺寸輕薄型的SMD晶體編碼系列FX252BS-27.000,福克斯公司是美國一家十分杰出的品牌制造商,同時也是一家具備獨特創新能力的家族型企業，主要向市場提供性能優越，成本低廉的石英晶體和振蕩器。經過長期的積累福克斯工程師已經開發出數百種產品，為晶體和振蕩器的性能，精度和可靠性設定了新的標準，并且為了縮短交付周期以滿足不斷增長的業務需求。
| Manufacturer Part Number原廠編碼 | Manufacturer廠家 | Series型號 | 無源晶振系列 | Frequency | Frequency Stability頻率穩定度 |
| FOXSDLF/040 | FOX晶振 | HC49SDLF | MHz Crystal | 4MHz | ±50ppm |
| FOXSDLF/221-20 | FOX晶振 | HC49SDLF | MHz Crystal | 22.1184MHz | ±50ppm |
| FOXSDLF/221-20 | FOX晶振 | HC49SDLF | MHz Crystal | 22.1184MHz | ±50ppm |
| FOXSDLF/221-20 | FOX晶振 | HC49SDLF | MHz Crystal | 22.1184MHz | ±50ppm |
| FOXSDLF/073-20 | FOX晶振 | HC49SDLF | MHz Crystal | 7.3728MHz | ±50ppm |
| FOXSDLF/073-20 | FOX晶振 | HC49SDLF | MHz Crystal | 7.3728MHz | ±50ppm |
| FOXSDLF/073-20 | FOX晶振 | HC49SDLF | MHz Crystal | 7.3728MHz | ±50ppm |
| FOXSDLF/049-20 | FOX晶振 | HC49SDLF | MHz Crystal | 4.9152MHz | ±50ppm |
| FOXSDLF/049-20 | FOX晶振 | HC49SDLF | MHz Crystal | 4.9152MHz | ±50ppm |
| FOXSDLF/049-20 | FOX晶振 | HC49SDLF | MHz Crystal | 4.9152MHz | ±50ppm |
| FOXSDLF/250FR-20/TR | FOX晶振 | HC49SDLF | MHz Crystal | 25MHz | ±50ppm |
| FOXSDLF/250FR-20/TR | FOX晶振 | HC49SDLF | MHz Crystal | 25MHz | ±50ppm |
| FOXSDLF/250FR-20/TR | FOX晶振 | HC49SDLF | MHz Crystal | 25MHz | ±50ppm |
| FX425B-12.000 | FOX晶振 | FX425B | MHz Crystal | 12MHz | ±50ppm |
| FX425B-12.000 | FOX晶振 | FX425B | MHz Crystal | 12MHz | ±50ppm |
| FX425B-12.000 | FOX晶振 | FX425B | MHz Crystal | 12MHz | ±50ppm |
| FQ5032B-18.432 | FOX貼片石英晶振 | C5BQ | MHz Crystal | 18.432MHz | ±30ppm |
| FQ5032B-18.432 | FOX晶振 | C5BQ | MHz Crystal | 18.432MHz | ±30ppm |
| FQ5032B-18.432 | FOX晶振 | C5BQ | MHz Crystal | 18.432MHz | ±30ppm |
| FX252BS-24.000 | FOX晶振 | FX252B | MHz Crystal | 24MHz | ±50ppm |
| FX252BS-24.000 | FOX晶振 | FX252B | MHz Crystal | 24MHz | ±50ppm |
| FX252BS-24.000 | FOX晶振 | FX252B | MHz Crystal | 24MHz | ±50ppm |
| FQ7050BR-7.3728 | FOX晶振 | C7BQ | MHz Crystal | 7.3728MHz | ±50ppm |
| FQ7050BR-7.3728 | FOX晶振 | C7BQ | MHz Crystal | 7.3728MHz | ±50ppm |
| FQ7050BR-7.3728 | FOX晶振 | C7BQ | MHz Crystal | 7.3728MHz | ±50ppm |
| FX122-327 | FOX晶振 | FX122 | kHz Crystal (Tuning Fork) | 32.768kHz | - |
| FX122-327 | FOX晶振 | FX122 | kHz Crystal (Tuning Fork) | 32.768kHz | - |
| FX122-327 | FOX晶振 | FX122 | kHz Crystal (Tuning Fork) | 32.768kHz | - |
| FOXSLF/115-20 | FOX晶振 | HC49SLF | MHz Crystal | 11.0592MHz | ±50ppm |
| FOXSLF/250F-20 | FOX晶振 | HC49SLF | MHz Crystal | 25MHz | ±50ppm |
| FOXSLF/147-20 | FOX晶振 | HC49SLF | MHz Crystal | 14.7456MHz | ±50ppm |
| FOXSLF/073-20 | FOX晶振 | HC49SLF | MHz Crystal | 7.3728MHz | ±50ppm |
| FOXSLF/160-20 | FOX晶振 | HC49SLF | MHz Crystal | 16MHz | ±50ppm |
| FOXSLF/160 | FOX晶振 | HC49SLF | MHz Crystal | 16MHz | ±50ppm |
| FOXSLF/080 | FOX晶振 | HC49SLF | MHz Crystal | 8MHz | ±50ppm |
| FOXSLF/128-20 | FOX晶振 | HC49SLF | MHz Crystal | 12.288MHz | ±50ppm |
| FOXSLF/245F-20 | FOX晶振 | HC49SLF | MHz Crystal | 24.576MHz | ±50ppm |
| FOXSLF/040A | FOX晶振 | HC49SLF | MHz Crystal | 4MHz | ±50ppm |
| FOXSLF/120 | FOX晶振 | HC49SLF | MHz Crystal | 12MHz | ±50ppm |
| FOXSLF/0368-20 | FOX晶振 | HC49SLF | MHz Crystal | 3.6864MHz | ±50ppm |
| FOXSLF/240F-20 | FOX晶振 | HC49SLF | MHz Crystal | 24MHz | ±50ppm |
| FOXLF250F-20 | FOX晶振 | HC49ULF | MHz Crystal | 25MHz | ±50ppm |
| FOXLF120-20 | FOX晶振 | HC49ULF | MHz Crystal | 12MHz | ±50ppm |
| FOXLF160 | FOX晶振 | HC49ULF | MHz Crystal | 16MHz | ±50ppm |
| FOXLF160-20 | FOX晶振 | HC49ULF | MHz Crystal | 16MHz | ±50ppm |
| FOXLF040A | FOX晶振 | HC49ULF | MHz Crystal | 4MHz | ±50ppm |
| FOXLF0368-20 | FOX晶振 | HC49ULF | MHz Crystal | 3.6864MHz | ±50ppm |
| FOXSLF/143-20 | FOX晶振 | HC49SLF | MHz Crystal | 14.31818MHz | ±50ppm |
| FOXSDLF/143-20 | FOX晶振 | HC49SDLF | MHz Crystal | 14.31818MHz | ±50ppm |
| FOXSDLF/143-20 | FOX晶振 | HC49SDLF | MHz Crystal | 14.31818MHz | ±50ppm |
| FOXSDLF/143-20 | FOX晶振 | HC49SDLF | MHz Crystal | 14.31818MHz | ±50ppm |
隨著需求的增長福克斯公司歷程幾番磨難，推出了編碼FX252BS-27.000，型號FX252B，尺寸為2520mm，頻率為27MHz ，精度±50ppm ，石英晶體，SMD晶體，負載電容 20pF ，腳位4-SMD，產品具備良好的穩定性能，比較適合用于無線網絡，儀器設備，通信模塊等領域.
