<style> .return-manual-page { margin: 0; color: #222; font-size: 1rem; line-height: 1.75; } .return-manual-page h1 { margin: 0 0 18px; color: #222; font-size: 26px; line-height: 1.25; font-weight: 600; } .return-manual-page h3 { margin: 26px 0 10px; padding: 0; color: #153e78; font-size: 18px; line-height: 1.35; font-weight: 600; } .return-manual-page p { margin: 0 0 14px; } .return-manual-page ul { margin: 0; padding-left: 18px; color: #222; line-height: 1.7; } .return-manual-page li { margin: 4px 0; padding-left: 2px; } .return-manual-page .ccn-table { width: 100%; margin: 14px 0 26px; border-collapse: collapse; table-layout: fixed; color: #222; font-size: 1rem; line-height: 1.55; } .return-manual-page .ccn-table th, .return-manual-page .ccn-table td { border: 1px solid #d9dde2; padding: 8px 10px; vertical-align: top; } .return-manual-page .ccn-table th { background: #f3f4f5; font-weight: 600; text-align: center; } .return-manual-page .ccn-table th:first-child, .return-manual-page .ccn-table td:first-child { width: 20%; text-align: center; vertical-align: middle; font-weight: 600; } .return-manual-page .ccn-table th:nth-child(2), .return-manual-page .ccn-table td:nth-child(2) { width: auto; } .return-manual-page .table-image { display: block; height: auto; max-width: 100%; margin: 8px auto 4px; } .return-manual-page .label-image { width: 500px; } .return-manual-page .swap-image { width: 700px; } .return-manual-page .notice-list { margin: 0 0 24px; padding-left: 0; list-style-position: inside; color: #222; line-height: 1.8; } .return-manual-page .notice-list li { margin: 6px 0; } @media (max-width: 640px) { .return-manual-page { max-width: 100%; font-size: 1rem; } .return-manual-page h1 { font-size: 24px; } .return-manual-page h3 { font-size: 20px; } .return-manual-page .ccn-table { font-size: 1rem; } .return-manual-page .ccn-table th, .return-manual-page .ccn-table td { padding: 7px 8px; } .return-manual-page .ccn-table th:first-child, .return-manual-page .ccn-table td:first-child { width: 25%; } .return-manual-page .label-image { width: 300px; } }</style><div class="return-manual-page"><p>In order to enhance data analysis efficiency and increase failure analysis success rate, Richtek defines a guideline for returning the non-conformant products. Please follow the guideline and contact your Richtek FAE, Sales or Distributors for the file.</p><h3>Customer Complaint Notice (CCN) Guidelines</h3><p>When customers want to return the failure sample to Richtek for future analysis, please contact the Richtek sales/FAE/agent to apply the "Customer Complaint Notice and Engineering Supporting Notice" (PQA012-01) and follow the CCN guidelines below to provide the detailed information.</p><table class="ccn-table"><tbody><tr><th>Category</th><th>Provided by Customer Side</th></tr><tr><td>Failure information</td><td><ul><li>Provide the failure rate, failure stage and failure symptom information.</li><li>Take a picture of reel label information (including date code/lot ID etc.).</li></ul><img class="table-image label-image" alt="Label" src="/content/dam/richtek-eds/resources/images/quality-and-reliability/Label.png" width="400" height="201"></td></tr><tr><td>Sample status</td><td><ul><li>Reserve appearance integrity and provide clear pictures (top side and bottom side).</li><li>Contact Richtek's service window and, if necessary, remove the abnormal sample from the system board and send it back to Richtek for analysis.</li></ul></td></tr><tr><td>Electrical status</td><td><ul><li>Provide the test conditions and test results of the failure sample. (For example: VIN/VOUT/Frequency conditions, power on/off sequence, application circuit condition, leakage current level or abnormal waveform etc.)</li><li>Check the resistance of abnormal pin and compare it with good sample by multi-meter.</li><li>Provide A-B-A Swap result to make sure the failure symptom is related to Richtek component.</li></ul><img class="table-image swap-image" alt="A-B-A Swap" src="/content/dam/richtek-eds/resources/images/quality-and-reliability/A-B-A_Swap.png" width="600" height="338"></td></tr><tr><td>Sample transportation</td><td><ul><li>Place the returned sample in a safety container to protect it from ESD or physical damage during transportation.</li></ul></td></tr></tbody></table><h3>Product Analysis Notice</h3><p>To achieve effective quality analysis and valuable analysis results, Richtek does not accept the following faulty products to be returned for Richtek analysis.</p><ol class="notice-list"><li>The chip has been seriously damaged. (For example: die surface appearance burnt-out, lead/ package are severely bent or broken, die chipping/crack etc.)</li><li>Excessive solder residue or abnormal coating material remaining on the pins or BGA.</li><li>Richtek is not responsible for cleaning the customer's solder residual, underfill or coating, so customer should ensure that the samples to be returned are in a testable status. (such as ATE test)</li></ol><h3>Electrical Over Stress (EOS) Notice</h3><p>The damage caused by serious electrical over stress (EOS) will cover up the real problem. Richtek does not understand the customer's operation, environment, temperature and other conditions when the failure occurs. Thus, Richtek is not responsible for speculating the root cause of excessive electrical stress, and will not be pursued for any effective actions.</p></div>