Crossing an 0603 X7R Line From Murata to Walsin, Field by Field
One 0603 X7R 100 nF 50 V line, 13 real Walsin parts, two thickness tolerance bands and three terminations. The field-by-field cross, with nothing hidden.
October 3, 2026
One 0603 X7R 100 nF 50 V line, 13 real Walsin parts, two thickness tolerance bands and three terminations. The field-by-field cross, with nothing hidden.
DDP, DAP and EXW explained for a passive component buyer, plus what ships from Hong Kong: reels, the CT order suffix, reel quantity and date codes.
Design-in support in six stages: part selection, cross-reference, qualification, FAE help, AEC-Q200 and mass production, with real Walsin part data.
358 Walsin MLCC part numbers carry two different thicknesses. What an FAE checks on a passive BOM: height, rated power, AEC-Q200 status, orderability.
What a buffer stock arrangement records, what SPQ and date code mean for a reservation, and an honest audit of the gaps in a real 1,125-line stock file.
BOM supply resilience step by step: write lines as specifications, name second candidates early, record the fields that make them usable. Walsin data.
Second source passive components without a board change: match footprint, thickness, termination and grade. Real Walsin part data and what differs.
EOL component replacement checklist: read the dates, rebuild the specification, count the candidates, check thickness and tolerance, get the order code.
Cross a part to Walsin, then find that Walsin MLCC in stock in Hong Kong. 1,125 part numbers at 23 September 2026, and the CT suffix you must order.
The full path for an RFQ on passive components: cross the part, state a quantity, add it to an RFQ, get the orderable code, SPQ and DDP, DAP or EXW terms.