Metal-Oxide Varistors are known to develop leakages over time which will shorten device lifespan if not fixed.
Also size of currently used TVS is far from optimal.
Metal-Oxide Varistors are known to develop leakages over time which will shorten device lifespan if not fixed.
Also size of currently used TVS is far from optimal.
Replaced a MOXVAR guarding flash LED with VCUT07B1-HD1.
ESDA5-1F4 wasn't enough for it since it needs maximum of 6.8V when working.
VCUT07B1-HD1 is 7V standoff, 7.3V break down and 12V clamping (at 1A).
Other variant (in case VCUT07B1-HD1 is a problem) is PTVS7V5Z1USK (8.3V breakdown voltage 13V clamp)
Replaced a MOXVAR guarding flash LED with VCUT07B1-HD1.
ESDA5-1F4 wasn't enough for it since it needs maximum of 6.8V when working.
VCUT07B1-HD1 is 7V standoff, 7.3V break down and 12V clamping (at 1A).
Other variant (in case VCUT07B1-HD1 is a problem) is PTVS7V5Z1USK (8.3V breakdown voltage 13V clamp)
Remaining (around 20 pcs) MOXVARs were replaced with ESDA5-1F4 in https://notabug.org/Houkime/Neo900/commit/a38086a04200d4ad8b3ead7f12b3c4e884ae5567
This also should alleviate https://notabug.org/Houkime/Neo900/issues/4
Metal-Oxide Varistors are known to develop leakages over time which will shorten device lifespan if not fixed. Also size of currently used TVS is far from optimal.
Candidates:
https://eu.mouser.com/datasheet/2/389/esda5-1f4-1156271.pdf
Replaced a MOXVAR guarding flash LED with VCUT07B1-HD1. ESDA5-1F4 wasn't enough for it since it needs maximum of 6.8V when working. VCUT07B1-HD1 is 7V standoff, 7.3V break down and 12V clamping (at 1A).
Other variant (in case VCUT07B1-HD1 is a problem) is PTVS7V5Z1USK (8.3V breakdown voltage 13V clamp)
Remaining (around 20 pcs) MOXVARs were replaced with ESDA5-1F4 in
a38086a042This also should alleviate #4