SMT Assembly, prices do not add up
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JohnBerg 1 year ago
I want to use the pcb assembly for the first time and have my design ready. But after uploading the gerber, bom and pick and place the prices do not match! The section where I have to confirm the parts seems ok, but the final prices added to the card do not match. Some prices are exactly twice the amount, some are correct and some are slightly higher. I found 1 part witch is actually cheaper. Some Examples ( 10 pcs order quantity): | | | | | | | | | | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | ID | Name | Designator | Footprint | Quantity | Manufacturer Part | Manufacturer | Supplier | Supplier Part | LCSC Assembly | Unit Price | Total | Order | Difference | | 3 | ADUM1201ARZ-RL7 | U1 | SOIC-8_150MIL | 1 | ADUM1201ARZ-RL7 | ADI | LCSC | C9669 | Yes | 0,95 | 9,46 | 10,40 | -0,95 | | 14 | 12MHz | X2 | OSC-SMD_4P-L3.2-W2.5-BL | 1 | X322512MSB4SI | YXC | LCSC | C9002 | Yes | 0,11 | 1,10 | 2,20 | -1,10 | | 31 | INA199A3DCKR | U7 | SC-70-6(SOT-363) | 1 | INA199A3DCKR | Texas Instruments | LCSC | C132098 | Yes | 0,36 | 3,57 | 7,13 | -3,57 | | 34 | 0.002 | R15 | 2512 | 1 | LR2512-22R002F4 | RALEC | LCSC | C108929 | | 0,08 | 0,76 | 1,51 | -0,76 | | 35 | 4.7uH | L3,L4 | SMD-L-7.1X6.6 | 2 | MWSA0603-4R7MT | Sunlord | LCSC | C132139 | | 0,18 | 3,57 | 2,66 | 0,91 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [-5,4608](mailto:[email protected](N2:N36)) | For completeness the answer from support: Thanks for your e-mail , so sorry for that for some component , it will have supplement for the component , so it's not same as cost what you need . And please kindly to revised the BOM file format as below:
Comments
MikeDB 1 year ago
It's normal if you use components where the reels have to be hand-loaded onto the machine, there will be a surcharge. Many parts are marked "Extended Part" on the parts list, but it doesn't say if the listed price includes any surcharge or not. [https://jlcpcb.com/client/index.html#/parts](https://jlcpcb.com/client/index.html#/parts)
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JohnBerg 1 year ago
@MikeDB its not the $3 surcharge that doesn't add up. The are listed separated. It is about the "raw" component prices that are different on the website vs the final assembly.
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