DT640 Silicon Diode Temperature Sensor

The DT640 series silicon diode temperature sensor uses silicon diodes specially suitable for low temperature temperature measurement. Compared with ordinary silicon diodes, it has the characteristics of good repeatability, small dispersion, higher accuracy, wider temperature range, and relatively high voltage at low temperature, which is easy to measure. All of these thermometers better follow a voltage-temperature (V-T) curve, allowing for better interchangeability. Many applications do not require a separate calibration.

Compared with other thermometers on the market, the DT640-BC bare chip thermometer has the characteristics of smaller size, smaller heat capacity and shorter response time. It has unique advantages in applications with special requirements for size, thermal capacity and response time.

Features:

※ The excitation current is small, so it has a small self-heating effect;

※ It conforms to the standard curve and has good interchangeability;

※ A variety of packages, not easy to damage, temperature shock resistance, easy to install;

※ In a wide temperature range of 1.4K-500K, it can provide better measurement accuracy;

※ Follow DT-640 standard temperature response curve;

※ A variety of optional packaging methods.

Parameter:

※ Temperature range: 3K~500K;

※ Standard curve: DT640

※ Recommended excitation current: 10µA±0.1%;

※ Repeatability: 10mK@4.2K, 16mK@77K, 75mK@273K.

※ Reverse voltage up to: 75V;

※ Current up to before damage: 200mA for a long time or 1A for an instant;

※ Power dissipation under recommended excitation: 20µW@4.2K; 10µW@77K; 6µW@300K;

※ BC package response time: 10ms@4.2K, 100ms@77K, 200ms@305K;

※ Radiation effect: only recommended for use in low radiation situations;

※ Magnetic field effect: It is not recommended to use in a magnetic field environment.

Typical Response Curve And Sensitivity

Grade Or Calibration Range	Temperature Range	Calibration Range	Precision
A	3K~500K		±0.25K
B	3K~500K		±0.5K
C	3K~500K		±1K
3L	3K~325K	3K~330K	±0.1K
3H	3K~500K	3K~505K	±0.1K
70L	70K~325K	65K~330K	±0.1K
70H	70K~500K	65K~505K	±0.1K
Thermometer Accuracy=（Calibration uncertainty2 + Repeatability2）0.5

Temperature Range And Accuracy:

Package form and external dimensions:

In order to meet the needs of different user conditions, Jinzhengmao can provide thermometer packages and sizes of various forms and types. The following types are common package forms and their specific sizes. We can also design according to customer needs.

MS：With Metric Screws BO：Spool Package PI：Tube Package BC：Die