MLCC Preheat Limit: Walsin’s Guide Allows a 130 °C Gap for a 2220, the Large-Size Sheet Says 50 °C, and 19 of 26 Files Give No Preheat Guidance

Walsin’s guide and large-size sheet set a 2220 preheat limit of 130 °C and 50 °C; 19 of 26 files give none. We counted 24,026 rows. Free cross reference.

MLCC Reflow Passes: Walsin’s Guide Recommends Two, One Sheet Conditions Its Samples With Three, and 24 of 26 Files State No Number

Walsin’s guide recommends 2 MLCC reflow passes, one sheet conditions with 3, and 24 of 26 files give no number. Free cross reference.

Walsin S2 Safety MLCC: 101 of 225 Printed Grid Cells Hold a Part, the NP0 2220 Column Holds None, and 80 of 82 X7R Cells Carry the Surface-Coating Mark

Walsin’s S2 sheet prints 225 capacitance cells; the export fills 101, none at NP0 2220. 80 of 82 X7R cells are surface-coating only. Free cross reference.

Walsin MLCC Sheets 13 to 18: Of 40 Printed Range Edges the Export Confirms 17, Contradicts 7 and Cannot Test 16

Walsin sheets 13-18 print 40 capacitance and voltage range edges; the export confirms 17, contradicts 7, can’t test 16. Free cross reference.

Chip Resistor Tolerance and TCR by Series for Hong Kong Buyers: 28 of 81 Pairs Exist in One Series Only

28 of 81 tolerance and TCR pairs in 234,793 Walsin chip resistor rows sit in one series; 5 only in Automotive-named series. Free cross reference.

BOM Check for South Korea: The Letter O Is in 16 of 359,135 Walsin Part Numbers, the Letter I in 1,992, and a Cleaner That Fixes Both Breaks 1,995

BOM check for South Korea: the letter O is in 16 of 359,135 Walsin part numbers and I in 1,992. A cleaner swapping them breaks 1,995. Free tool.

Chip Resistor Short Time Overload: Walsin’s 2.5 Times Rule Puts 6.25 Times Rated Power Into 22,526 Rows and Less Than Rated Into 6,933

Walsin’s 5-second overload test is a voltage rule: 22,526 of 33,192 WR and MR rows see 6.25x rated power, 6,933 see less. Free cross reference.

Chip Resistor Derating Curve: Walsin’s Two Sheets Draw One Line, and the MR Life Test Loads It at 35% at 125 °C

Walsin’s WR and MR sheets draw one derating curve: full power to 70 °C, zero at 155 °C. We compared them pixel by pixel. Free cross reference.

Walsin MLCC Datasheet Soldering Profile: 9 of 12 Approval Sheets Share One Soldering Page Word for Word, and 11 of 12 Print the Reflow Profile Only as a Picture

11 of 12 Walsin MLCC approval sheets show the reflow profile only as a picture; 9 share one soldering page word for word. Free cross reference.

MLCC Measurement Voltage for Class II Parts: Walsin’s General Purpose Sheet Prints 5 Levels, Names 120 of 3,672 Rows as Exceptions, and States No Level for 163

Walsin’s General Purpose sheet prints five Class II test voltages, 1 V to 0.1 V. 163 of 3,672 export rows have none. Free cross reference.