OMEGA 超低温测温元件系列

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The CY670 Series silicon diodes offer a more accurate reading of temperature ranges compared to previously marketed silicone diodes. Conforming to the curve CY670 standard voltage vs. temperature response curve, sensors within the CY670 Series are interchangeable, and for many applications they do not require individual calibration. CY670 Series sensors in the SD package are available in 5 tolerance bands–3 for general cryogenic use across the 1.4 to 500 K temperature range, and 1 that offers superior accuracy for applications from 30 K to room temperature. The CY670 Series sensors also come in a tolerance band (E), which is available only as a bare die. For applications requiring greater accuracy, CY670-SD diodes are available with calibration across the full 1.4 to 500 K temperature range.
The CY670E bare die sensor provides the smallest physical size and fastest thermal response time of any silicon diode on the market today. This is an important advantage for applications where size and thermal response time are critical, including focal plane arrays and high temperature superconducting filters for cellular communication. 

SPECIFICATIONS 
Standard Curve: Curve CY670, see chart next page 
Recommended Excitation: 10 µA, ±0.1% 
Max Reverse Voltage: 60 V 
Max Current Before Damage: 1 mA, continuous or 100 mA, pulsed 
Dissipation at Recommended Excitation: 16 µW @ 4.2 K; 10 µW @ 77 K; 5 µW @ 300 K 
Thermal Response Time: SD Model: Typical <10 ms @ 4.2 K, 100 ms @ 77 K, 200 ms @ 305 K 
BR Model: 1 ms @ 4.2 K, 13 ms @ 77 K, 20 ms @ 305 K 
Use in Radiation: Recommended for use only in low level radiation

Temperature Volts dV/dT (mV/K)
1.4 K 1.64 -12.5
4.2 K 1.58 - 31.6
10 K 1.38 -26.8
77 K 1.03 -1.73
305 K 0.560 -2.30

Temperature Typical
Accuracy
Long Term
Accuracy (*)
1.4 K ±12 mK
4.2 K ±12 mK 10 mK
10 K ±12 mK
77 K ±22 mK 40 mK
300 K ±32 mK 25 mK
500 K ±50 mK

Band Temperature Tolerance at Temperature Range
2 to 30 K 30 to 100 K 100 to 305 K 305 to 500 K
A (1) ±0.25 K ±0.25 K ±0.50 K ±0.50 K
B (2) ±0.50 K ±0.50 K ±0.50 K ±0.33% of T
(1.01 to 1.65 K)
C (3) ±1.0 K ±1.0 K ±1.0 K ±0.5% of T
(1.53 to 2.50 K)
D (4)
(PRT Band)
±1.5 K ±0.25 K ±0.30 K ±0.1% of T
(0.305 to 0.500 K)
E
(Bare Chip Band)
±1.0 K ±0.25 K ±0.25% of T
(0.25 to 0.76 K)
±0.25% of T
(0.76 to 1.25 K)

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