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+--- Thread: What part is L2000 precisely? (/showthread.php?tid=20168)
What part is L2000 precisely? - jssfr - 01-14-2026
Hi there!
Looks like L2000 gave out on my ROCKPro64:
The labeling says 3R3, which leads me to believe this is a 3.3uH inductor. There are three more inductors on the board with a label of 3R3, one in the same size and quite close (can be seen in the photo) and two more closer to the CPU, between the CPU and the PCIe port, which are smaller (3x3mm if I'd have to guess).
The schematics for the 2.1 board revision (mine has Rckpro64 V2.1 2018-07-02 printed on it) only show two 3.3uH inductors and if I'm reading the label correctly ("IND_3x3"), those would be the inductors between the CPU and the PCIe port.
By cross-referencing the V2.0 silk screen with the V2.1 schematic (risky, I know), I identified the damaged part as being L2000, behind the VCC5V0_SYS regulator. That seems plausible and fits my symptoms of random kernel panics (as far as I can tell, the CPUs power is derived from VCC5V0_SYS at some point).
However, the V2.1 schematic lists L2000 (and L2001) as 4.7uH inductors, while my board seems to have 3.3uH inductors in that place.
Is that a manufacturing error or is that a mistake in the schematics or did I do a mistake when identifying the problematic part?
I'm also looking for a replacement, and assuming that 3.3uH is correct, I'd think that MPL-SE4030-3R3 would be a good fit. If it should in fact be a 4.7uH, the MPL-SE4030-4R7 should fit the bill. At least those parts fulfill the current rating (3.3A) and the resistance (0.04Ohm) from the schematics.
Thanks for any insights,
jssfr
P.S.: I do not know what damaged that inductor in that way. I cannot imagine physical force alone, I suspect it got overloaded at some point, but I don't know with what. AFAICT, *that* 5V rail does not power the USB, so it can't be any USB peripherials. I do have some connected to the Pi header, but none of which should draw more than a few dozen milliamperes.