Timeline for Deciphering Part Names in BOM
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 11, 2012 at 15:21 | comment | added | David | @helloworld922 is right on all counts. I got a response from TI: e2e.ti.com/support/low_power_rf/f/156/p/210681/… . 'F' and 'G' do indicate ±1% and ±2% tolerances for resistors, respectively. For inductors, 'S' = ±0.3nH, and 'J' = ±5%. For capacitors, the 'L' appears to have been a ±15% tolerance code used by Murata at one point, between 'K' for ±10% and 'M' for ±20%, which are still in use. | |
| Oct 11, 2012 at 15:15 | vote | accept | David | ||
| Oct 10, 2012 at 17:26 | comment | added | helloworld922 | @DavidKessner Maybe I just live in a backwards part of the world, but my local electronics shop stocks quite a few 2% resistors and not many 1% (of course, 5% is the most common). This is definitely different from what I see online where 1% is very common and 2% is uncommon. | |
| Oct 10, 2012 at 17:24 | comment | added | helloworld922 | True, it does seem kind of fishy. Probably another good question to ask TI support. The only other place I could find info on letters for resistor markings was in the resistor value itself (I've seen it used in EIA96 resistors), but that's not usually at the end of the part number. | |
| Oct 10, 2012 at 17:14 | comment | added | David | Also, R1 ("R_270_0402_F") is just a resistor for an LED -- I don't think it would require such a tight (±1%) tolerance. | |
| Oct 10, 2012 at 16:59 | comment | added | user3624 | I doubt that's it. If it were the case then R4 would be a 2% part, and those are either non-existent or super rare. | |
| Oct 10, 2012 at 16:47 | history | answered | helloworld922 | CC BY-SA 3.0 |