ASTM F448 - 18 - Standard Test Method for Measuring Steady-State Primary Photocurrent

ASTM F448 - 18

Standard Test Method for Measuring Steady-State Primary Photocurrent

Status : Current   Published : March 2018



1.1 This test method covers the measurement of steady-state primary photocurrent, Ipp, generated in semiconductor devices when these devices are exposed to ionizing radiation. These procedures are intended for the measurement of photocurrents greater than 10 −9 A·s/Gy(Si or Ge), in cases for which the relaxation time of the device being measured is less than 25 % of the pulse width of the ionizing source. The validity of these procedures for ionizing dose rates as great as 10 8Gy(Si or Ge)/s has been established. The procedures may be used for measurements at dose rates as great as 10 10Gy(Si or Ge)/s; however, extra care must be taken. Above 10 8Gy/s, the package response may dominate the device response for any device. Additional precautions are also required when measuring photocurrents of 10 −9 A·s/Gy(Si or Ge) or lower.

1.2 Setup, calibration, and test circuit evaluation procedures are also included in this test method.

1.3 Because of the variability between device types and in the requirements of different applications, the dose rate range over which any specific test is to be conducted is not given in this test method but must be specified separately.

1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.5  This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.6  This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard NumberASTM F448 - 18
TitleStandard Test Method for Measuring Steady-State Primary Photocurrent
Publication Date01 March 2018
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
Descriptors Hardness assurance, ionizing radiation, photocurrent, primary photocurrent, semiconductor testing
File Size165 KB

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