UM means Unit of Measure in Electronics
Similar to UM
ACA - Anisotropically Conductive AdhesiveACAD - Anodized Ceramic Aluminum Diaphragm
ACB - Air Circuit Breaker
ACC - Actual Carriers Created
ACCI - Accelerated Coated Conductor Initiative
ACDC - Alternating Current, Direct Current
ACE - Alternating Conditional Expectation
View all in Electronics