Temperature sensitive crystals
General application
High precision temperature measurement (sensitivity mK)
Features
High sensitivity, good / excellent linearity, high long-term stability
Packing
Temperature sensitive crystals can by assembled in metal packages designed for through hole mount (i.e. HC-49, HC-52, UM-1, UM-4, UM-5), as well as in ceramic packages [a]
Typical specifications
| Type | Temperature crystals | |
|---|---|---|
| Frequency range | 4 – 40 MHz | |
| Sensitivity of frequency on temperature | 20 – 90 ppm/K | |
| Working temperature range | -50 … +125 (+200 [b]) °C | |
| Non-linearity | 5 x 10-2 … 1 x 10-3 [c] |
|
| Equivalent series resistance (ESRmax) | 5 … 50 ohm [d] | |
| Time constant for temperature step 10°C [e] | for sensitivity 0,1°C for sensitivity 0,01°C for sensitivity 0,001°C |
101 sec 1 min 3 … 10 min |
[a] – ceramic packages have a longer time constant
[b] – temp. range can be extended up to +200°C at the expense of slightly worsened hysteresis and aging
[c] – nonlinearity closely related to sensitivity
[d] – ESRmax depends on the choice of frequency and package size
[e] – The time constant depends on the type of package, gas filling of package, environmental conditions, etc.
Differences from standard values and other parameters can be consulted.