Crystal in ceramic SMD package
General application
Telecommunications, measuring devices, medical devices
Features
Small size ceramic package designed for SMD,
KX7 is hermetic sealed by seam welding,
KX5 is hermetic sealed by seam welding or by glas-frit welding (non-magnetic)
Assembly, taping
Crystals in ceramic SMD packages can by deliver in tapes wound on reels, suitable for automatic assembly.
Typical specifications
| Type | Ceramic SMD package | |||
|---|---|---|---|---|
| Case | KX7 | KX5 | KX7, KX5 | KX7, KX5 |
| Overtone | 1. | 1. | 3. | 5. |
| Frequency range | 8-40 MHz | 10-40 MHz | 25-130 MHz | 75-160 MHz |
| Freq. adjustment tolerance at 25 °C | ±10, ±15, ±20, ±50, ±100 x 10-6 | |||
| Frequency stability | see table 1 | |||
| Equivalent series resistance | see table 2 | |||
| Aging | ±1, ±2, ±3 ppm/year | |||
| Storage temperature range | -40 … +90 °C | |||
| Load capacitance | series resonance, CL=10 … 40 pF | |||
| Shunt capacitance | 7 pF max. | |||
| Drive level | 100 µW max. | |||
Differences from standard values and other parameters can be consulted.
Frequency stability in temperature ranges
(table 1)
| Temperature range [°C] |
Frequency stability [ppm] | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| ± 5 | ± 7.5 | ± 10 | ± 15 | ± 20 | ± 30 | ± 50 | ± 100 | ||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | ||
| -10 … +60 | A | ||||||||
| -20 … +60 | B | ||||||||
| 0 … +70 | C | ||||||||
| -10 … +70 | D | ||||||||
| -20 … +70 | E | ||||||||
| -30 … +60 | F | ||||||||
| -20 … +85 | G | ||||||||
| -30 … +70 | H | ||||||||
| -30 … +85 | I | ||||||||
| -40 … +85 | J | ||||||||
| -40 … +90 | K | ||||||||
| -40 … +105 | L | ||||||||
Equivalent series resistance (ESRmax)
(table 2)
| Frequency [HMz] | Overtone | KX7 | KX5 |
|---|---|---|---|
| 8 … 10 | 1. | 70 Ω | – |
| 10 … 15 | 1. | 60 Ω | 60 Ω |
| 15 … 22 | 1. | 50 Ω | 60 Ω |
| 22 … 30 | 1. | 40 Ω | 50 Ω |
| 30 … 40 | 1. | 30 Ω | 40 Ω |
| 25 … 30 | 3. | 50 Ω | 50 Ω |
| 30 … 50 | 3. | 50 Ω | 50 Ω |
| 50 … 80 | 3. | 60 Ω | 80 Ω |
| 75 … 160 | 5. | 80 Ω | 80 Ω |
Ceramic SMD packages
Outline dimensions [mm]
| SMD ceramic package KX5 | SMD ceramic package KX7 |
|---|---|
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