DT-670 Silicon Diodes
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DT-670 Silicon Diodes DT-670-SD features DD Best accuracy across the widest useful temperature range—1.4 K to 500 K—of any silicon diode in the industry DD Tightest tolerances for 30 K to 500 K applications of any silicon diode to date DD Rugged, reliable Lake Shore SD package designed to withstand repeated thermal cycling and minimize sensor self-heating DD Conformance to standard DT-670 temperature response curve DD Variety of packaging options DT-670E-BR features DD Temperature range: 1.4 K to 500 K DD Bare die sensors with the smallest size and fastest thermal response time of any silicon diode on the market today DD Non-magnetic sensor DT-621-HR features DT-670 Series silicon diodes offer better accuracy over a wider temperature range than any previously marketed silicon diodes. Conforming to the Curve DT-670 standard voltage versus temperature response curve, sensors within the DT-670 series are interchangeable, and for many applications do not require individual calibration. DT-670 sensors in the SD package are available in four tolerance bands—three for general cryogenic use across the 1.4 K to 500 K temperature range, and one that offers superior accuracy for applications from 30 K to room temperature. DT-670 sensors also come in a seventh tolerance band, Band E, which are available only as bare die. For applications requiring greater accuracy. 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. Typical DT-670 diode voltage DT-670-SD diodes are available with calibration across the full 1.4 K to 500 K temperature range. The bare die sensor, the DT-670E, 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. Typical DT-670 diode sensitivity DD Non-magnetic package DD Exposed flat substrate for surface mounting Packaging options BO, BR, CO, CU, CY, DI, ET, LR, MT CAUTION: These sensors are sensitive to electrostatic discharge (ESD). Use ESD precautionary procedures when handling, or making mechanical or electrical connections to these devices in order to avoid performance degradation or loss of functionality. Lake Shore Cryotronics, Inc. | t. 614.891.2244 | f. 614.818.1600 | e. info@lakeshore.com | www.lakesho

Calibrated accuracy Long-term stability Typical sensor accuracy Standard curve Curve DT-670—see next page Max current before damage 1 mA continuous or 100 mA pulsed Dissipation at recommended excitation 16 µW at 4.2 K; 10 µW at 77 K; 5 µW at 300 K Thermal response time SD: typical <10 ms at 4.2 K, 100 ms at 77 K, 200 ms at 305 K; BR: 1 ms at 4.2 K, 13 ms at 77 K, 20 ms at 305 K Use in radiation Recommended for use only in low level radiation—see Appendix B Use in magnetic field Not recommended for use in magnetic field applications below 60 K. Low magnetic field dependence when used in...

Typical magnetic field-dependent (magnetic induction) Lake Shore Cryotronics, Inc. I t. 614.891.2244 I f. 614.818.1600 I e.info@lakeshore.com I www.lakeshore.com

DT-670 Series expanded temperature response data table T (K) Lake Shore Cryotronics, Inc. | t. 614.891.2244 | f. 614.818.1600 | e. info@lakeshore.com | www.lakeshore.com

Packaging options Ordering information For more information on sensor packages and mounting adapters, see page 21. Uncalibrated sensor Step 1: Choose diode series, for example DT-670. Step 2: Choose tolerance band (if applicable), for example DT-670A. Step 3: Choose package or mounting adapter—if ordering adapter, substitute the adapter suffix for the SD suffix, for example DT-670A-CU. Calibrated sensor Step 1: Choose diode series, for example DT-670. Step 2: Choose package or mounting adapter—if ordering adapter, substitute the adapter suffix for the SD suffix, for example DT-670-CU. Step...