SMU Bias Current

Overview

Vektrex Pulsed Source Measure Unit (PSMU) offers an integrated BIAS card optimized for thermal measurements. We are expert in thermal measurements. The BIAS option is available for integration with the SMU and the High Current SMU.

Diagram describing the different areas of an LED undertest, highlighting the junction temperature are the very top.
LED Thermal Management System

Applications

  • Junction temperature measurement using the JEDEC method
  • Empirically determine the operating temperature for your products
  • Execute JEDEC Dual Interface Test Method to validate use of thermal materials
  • In-situ junction temperature measurement of LED modules
  • Materials Research

All About Thermal Measurements

Learn all about thermal measurements and thermal measurement capabilities enabled when the BIAS option is selected.

Specifications

Bias Current Specifications
Max Current33 mA
Setpoint Resolution1 μA
Bias Current Accuracy0.35% + 60 μA
Fall Time to Bias Current200 ns – 3 μs
5% Settling Time After Falling Edge10 – 70 μs
0.1% Settling Time After Falling Edge70 – 130 μs

Bias Current option available with all Vektrex SMU models.

Additional Information

Typical LED Heat Flow Path Cross SectionMeasuring LED Junction Temperature (Tj)TJ Rise During Pulsed OperationJunction Temperature Assessment for LEDs & Lasers Operated in Pulsed Mode Presentation at CORM 2022Vektrex SMU generated heat path curvesThermal Resistance Measurement Using SMU

Contact Us

For more information on the Bias Current option and related products, visit our contact page.

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