This post offers you a free download of our general PCB Assembly Guide. It covers basic components such as resistors, capacitors, diodes, etc. It also offers tips on lining up and orienting parts as well as step by step suggestions on which parts you should place first, second, third, and so on.
I want to start out clarifying that I am not a JLCPCB affiliate. I have never been contacted by JLCPCB to endorse or pormote their products. I don’t have any insider info or contacts. This blog is a response to many questions I see posted in groups by people who need some resources. This blog is a private article about JLCPCBA resistors available as basic parts.
JLCPCB Assembly is a low-cost option for prototyping, but it does have it’s frustrations. There is a lot of confusion around basic vs extended parts and the cost can be prohibitive if you’re not using basic parts.
Many times we make a design, then we seek out manufacturing. It would be better for us to keep manufacturing in mind while we design. We are used to designing a pcb around the precise location of potentiometers. We have to go a step further and design our circuit around the availability of JLCPCB’s basic parts if their low-cost PCBA is part of our plan. This blog does not cover how to combine resistors to get specific values, but that is a skill you’ll need to acquire if you want to design pcbs for factory manufacturing.
I pulled data from JLCPCB’s parts library (it’s under resources) and compiled this spreadsheet to show the packages available and the values for each package. I did not filter for parts in-stock. I wanted to show what they offer at this time, without temporary stock levels affecting the outcome.
I have had a lot of success with JLCPCB with my orders. I’ve ordered hundreds of boards and probably at least fifty that were assembled. Overall I am a happy customer and recommend them all the time. I have criticisms, but I highly recommend them for PCBs and PCBA. I do not have any experience with their 3D printing service.
I have to say that I am disappointed with their offerings for resistor values. And I finally understand why it has been so difficult for me to rework projects to fit their basic parts availability. I had expected to find that they stocked a full range of some series of resistors in at least one package size, but that doesn’t seem to be the case. I had suspected that 0603 or 0805 would be the package size and E12 would be the series. I was wrong. You cannot even design a circuit in E3 series values and keep to one package size while assuming all of the values you need will be available for PCBA. I hope they see this and work to fix that problem, because it is tragic.
Hopefully this PDF is useful in planning your designs. My best experiences were when I researched available values and tweaked my schematics right before designing my PCB and sending it in for fabrication. I will still do it that way, but this guide should get me to the point that changes are only due to momentary stock levels.
This list was compiled and edited privately with no involvement from JLCPCB.
