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Homepage>BS Standards>19 TESTING>19.040 Environmental testing>BS EN IEC 60068-2-21:2021 Environmental testing Tests. Test U: Robustness of terminations and integral mounting devices
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BS EN IEC 60068-2-21:2021 Environmental testing Tests. Test U: Robustness of terminations and integral mounting devices

BS EN IEC 60068-2-21:2021

Environmental testing Tests. Test U: Robustness of terminations and integral mounting devices

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Standard number:BS EN IEC 60068-2-21:2021
Pages:50
Released:2021-09-13
ISBN:978 0 580 99121 9
Status:Standard
DESCRIPTION

BS EN IEC 60068-2-21:2021


This standard BS EN IEC 60068-2-21:2021 Environmental testing is classified in these ICS categories:
  • 19.040 Environmental testing
  • 31.190 Electronic component assemblies

This part of IEC 60068 is applicable to all electrical and electronic components whose terminations or integral mounting devices are liable to be submitted to stresses during normal assembly or handling operations and is also applicable to surface mount devices (SMDs).

The recommended test methods suitable for specific terminations/lead of devices are shown in Table 1.

Table 1 – Selection of test methods suitable for specific terminations/leads

Test method Component Mounted/not mounted See Clause
Test Type
Ua1 Tensile Leaded devices Not mounted Clause 4
Ua2 Thrust Leaded devices Not mounted Clause 4
Ub Bending Leaded devices Not mounted Clause 5
Uc Torsion Leaded devices Not mounted Clause 6
Ud Torque Threaded stud, screw or other terminations Not mounted Clause 7
Ue1 Substrate bending Surface mount devices Mounted Clause 8
Ue2 Pull/push Surface mount devices Mounted Clause 8
Ue3 Shear Surface mount devices Mounted Clause 8
Uf1 Body strength Surface mount devices Not mounted Clause 9
Uf2 Impact shock Surface mount devices Not mounted Clause 9