Sign In
DT-400
Skip Navigation LinksHome > Products > Cryogenic Temperature Sensors > Silicon Diodes > DT-400
Add to Cart View Cart

​Please note: The DT-470, DT-414 and DT-421 silicon diodes have been discontinued. There is still some remaining stock of certain models, shown on the Discontinued and Discounted Equipment page. Our recommended replacements are the DT-670 silicon diodes.
Model DT-400 Silicon Diodes
DT-470-SD Features
  • Monotonic temperature response from 1.4 K to 500 K*
  • Conformance to standard Curve 10 temperature response curve
  • Useful above 60 K in magnetic fields up to 5 T
  • The rugged, reliable Lake Shore SD package designed to withstand repeated thermal cycling and minimize sensor self-heating
  • Variety of packaging options
DT-471-SD Features
  • Lower priced version of DT-470 with a temperature range of 10 K to 500 K*
DT-414 Features
  • Temperature range: 1.4 K to 375 K (calibration up to 325 K)
  • Small mass for rapid thermal response
  • Non-magnetic package
DT-421 Features
  • Temperature range: 1.4 K to 325 K**
  • Non-magnetic package
  • Exposed flat substrate for surface mounting

* Calibrated to 500 K, uncalibrated (Curve 10) to 475 K
** Calibrated down to 1.4 K, uncalibrated (Curve 10) to 20 K

DT-470/471 Hermetically Sealed Silicon Diode

The DT-470/471 silicon diode cryogenic temperature sensors incorporate remarkably uniform sensing elements that exhibit precise, repeatable, monotonic temperature response over a wide range. The elements are mounted into rugged, hermetically sealed packages that have been specifically designed for proper thermal behavior in a cryogenic environment. The result is a family of cryogenic sensors with temperature characteristics so predictable, tightly grouped, and stable that the sensors in most applications are routinely interchangeable with one another.

ESD warning

DT-414 Unencapsulated Silicon Diodes

DT-414 unencapsulated silicon diode

The Model DT-414 uses the DT-400 bare chip silicon diode mounted on a flat substrate. This chip-level cryogenic temperature sensor offers minimal thermal mass and minimal physical size. Die attachment is with silver epoxy, and the chip is unencapsulated, leaving the fragile gold wires exposed.

 

DT-421 Miniature Silicon Diode

DT-421 Miniature Silicon Diode

The DT-421 miniature silicon diode cryogenic temperature sensor is configured for installation on flat surfaces. The DT-421 sensor package exhibits precise, monotonic temperature response over its useful range. The sensor chip is in direct contact with the epoxy dome, which causes increased voltage at 4.2 K and prevents full range Curve 10 conformity. For use below 20 K, calibration is required.

 

The Lake Shore SD Package—The Most Rugged, Versatile Package in the Industry

The SD package, with direct sensor-to-sapphire base mounting, hermetic seal, and brazed Kovar leads, provides the industry’s most rugged, versatile sensors with the best sample to chip connection. Designed so heat coming down the leads bypasses the chip, it can survive several thousand hours at 500 K (depending on model) and is compatible with most ultra high vacuum applications. It can be indium soldered to samples without shift in sensor calibration. If desired, the SD package is also available without Kovar leads.