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 ìA, ±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
Range of Use
Limit Min
Limit Max
CY670-SD
1.4 K
500 K
CY670E-BR
1.4 K
500 K
Use in Magnetic Field: Not recommended for use in magnetic field applications below 60 K; low magnetic field dependence when used in fields up to 5 tesla above 60 K
Reproducibility(*): ±10 mK @ 4.2 K
(*) Short-term reproducibility data is obtained by subjecting sensor to repeated thermal shocks from 305 to 4.2 K.
