IPC/JEDEC J-STD-020D

Syfer Technology Limited, Old Stoke Road,Arminghall, Norwich, Norfolk, NR14 8SQ,United KingdomTel: 44 (0) 1603 723300Tel. (Sales): 01603 723310Fax: 44 (0) 1603 723301Email: sales@syfer.co.ukWeb: www.knowlescapacitors.comIPC/JEDEC J-STD-020DMoisture/Reflow Sensitivity Classification for Non-hermetic Solid State SurfaceMount DevicesSyfer Surface Mount Capacitor Test Results1.0Introduction .22.0Moisture Sensitivity Classification Process .22.1Initial Electrical Test .22.2Initial Visual .22.3Bake .22.4Moisture Soak .22.5Reflow x 3 .32.6Final External Visual .32.7Final Electrical Test .32.8Final Internal Visual Examination .33.0Failure Criteria .44.0Syfer Test Summary .5Results .5Appendix 1 – Capacitor Photographs .6AN0024 Issue 3CN# P109275

Application NoteReference No: AN0024IPC/JEDEC J-STD-020DIssue 31.0Page 2 of 8IntroductionThe purpose of J-STD-020 is to identify the moisture sensitivity classification level of non-hermeticsolid state surface mount devices (SMDs). The classification level enables proper packaging, storageand handled to prevent potential damage as a result of moisture-induced stress during solderingoperations and/ or repair operations.Moisture Sensitivity Levels defined by J-STD-020Floor LifeLevelTimeCondition1(1)Unlimited(2) 30ºC/ 85%RH21 year 30ºC/ 60%RH2a4 weeks 30ºC/ 60%RH3168 hours 30ºC/ 60%RH472 hours 30ºC/ 60%RH548 hours 30ºC/ 60%RH5a24 hours 30ºC/ 60%RH6Time On Label (TOL) 30ºC/ 60%RHNotes:(1)If a device passes level 1, it is classified as not being moisture sensitive and does not require drypack.(2)Unlimited floor life refers specifically to moisture sensitivity related to components crackingduring soldering operations. Other factors may affect, for example, component solderability.Syfer recommended shelf life and storage conditions are available at www.syfer.comCopies of J-STD-020 are available at http://www.jedec.org2.0Moisture Sensitivity Classification Process2.1Initial Electrical TestCapacitors tested for: Capacitance. Dissipation Factor. Insulation resistance. Dielectric Withstand Voltage.2.2Initial VisualCapacitors externally visually examined using 50x magnification.2.3BakeCapacitors subjected to minimum 24hours at 125ºC 5/-0ºC.2.4Moisture SoakCapacitors placed in a humidity chamber at 85ºC/ 85%RH for 168 hours.

Application NoteReference No: AN0024IPC/JEDEC J-STD-020DIssue 32.5Page 3 of 8Reflow x 3Within 15 minutes to maximum 4 hours after the moisture soak, capacitors subjected to 3xreflow soldering profile.Reflow soldering profile used by Syfer:2.6Final External VisualCapacitors externally visually examined using 50x magnification.2.7Final Electrical TestCapacitors tested for:2.8 Capacitance Dissipation Factor Insulation resistance Dielectric Withstand VoltageFinal Internal Visual ExaminationJ-STD-020 includes a final acoustic microscopy stage after the final electrical test with anycomponent identified with a crack being evaluated by sectioning.

Application NoteReference No: AN0024IPC/JEDEC J-STD-020DIssue 3Page 4 of 8Acoustic microscopy may not identify all cracks within capacitors and to verify that no cracksare present, Syfer has sectioned all capacitors tested.Sectioning is conducted by mounting capacitors in high edge retention potting compound andthen grinding through the capacitors. During the grinding process, the capacitors have beenfrequently examined using up to 200x magnification checking for cracks.Ceramic materialTop layer. Plated witheither Tin/ Lead or 100%Tin.Middle layer. Plated Nickelbarrier layer.ElectrodesBase layer. Either Silver(sintered) or FlexiCap Figure 1 - Capacitor construction diagram3.0Failure CriteriaIf 1 or more capacitor in the test sample fails then the whole family group is considered to have failedthe tested MSL (Moisture Sensitivity Level).A capacitor is considered to have failed if it exhibits any of the following after the 168 hoursoak and subsequent 3x reflow processes: Crack observed during the Final External Visual examination Final Electrical Test failure Crack observed during the Final Internal Visual examinationmoisture

Application NoteReference No: AN0024IPC/JEDEC J-STD-020DIssue 34.0Page 5 of 8Syfer Test SummaryMoisture/ reflow sensitivity classification has been conducted by Syfer based on a family samplingapproach in relation to: Capacitor case size Dielectric classification Termination typeResultsPre Moisture Soakand 3x ReflowCapacitorCase C0GJ0603X7R0603Post Moisture Soak/3x ReflowAppendix 1Photo Ref2.1 InitialElectricalTests2.2InitialVisual2.6 FinalExternalVisual2.7 FinalElectricalTests2.8 InternalVisualExamination25PassPassPassPassPass1 and 2J25PassPassPassPassPass3 and 4X7RY25PassPassPassPassPass5 and 61210C0GJ25PassPassPassPassPass7 and 81210X7RJ25PassPassPassPassPass9 and 101210X7RY25PassPassPassPassPass11 and 122225C0GJ25PassPassPassPassPass13 and 142225X7RJ25PassPassPassPassPass15 and 162225X7RY25PassPassPassPassPass17 and 18Notes:(1)Termination type refers to the code letter used in Syfer part numbers.J: Silver base with Nickel Barrier (100% matte tin Plating).Y:termination base with Ni Barrier (100% matte tin plating).All capacitors tested passed Moisture Sensitivity Level (MSL) 1 and are not classified as beingmoisture sensitive. The capacitors supplied by Syfer do not require dry pack.

Application NoteReference No: AN0024IPC/JEDEC J-STD-020DIssue 3Page 6 of 8Appendix 1 – Capacitor PhotographsThe following photographs have been taken after the moisture soak and 3x reflow processes and arerepresentative of the capacitors subjected to the moisture/ reflow sensitivity classification tests.0603 C0G J TerminationRef 1. Final External VisualRef 2. Final Internal Visual (100x mag)0603 X7R J TerminationRef 3. Final External VisualRef 4. Final Internal Visual (100x mag)0603 X7R Y TerminationRef 5. Final External VisualRef 6. Final Internal Visual (100x mag)

Application NoteReference No: AN0024IPC/JEDEC J-STD-020DIssue 3Page 7 of 81210 C0G J TerminationRef 7. Final External VisualRef 8. Final Internal Visual (50x mag)1210 X7R J TerminationRef 9. Final External VisualRef 10. Final Internal Visual (50x mag)1210 X7R Y TerminationRef 11. Final External VisualRef 12. Final Internal Visual (50x mag)

Application NoteReference No: AN0024IPC/JEDEC J-STD-020DIssue 3Page 8 of 82225 C0G J TerminationRef 13. Final External VisualRef 14. Final Internal Visual (50x mag)2225 X7R J TerminationRef 15. Final External VisualRef 16. Final Internal Visual (50x mag)2225 X7R Y TerminationRef 17. Final External VisualRef 18. Final Internal Visual (50x mag)

IPC/JEDEC J-STD-020D Issue 3 Page 2 of 8 1.0 Introduction The purpose of J-STD-020 is to identify the moisture sensitivity classification level of non-hermetic solid state surface mount devices (SMDs). T