BCR430UW6

BCR430UW6 is a Diodes Incorporated linear LED constant-current controller in a SOT-26 package — it sets LED string current from 5 mA to 100 mA with a single external resistor, for interior lighting, backlighting and indicator strips fed from 5 V to 42 V. The controller works with the external transistor stage defined by the application circuit, so current scaling and thermal load sit outside this small package. The orderable code is BCR430UW6-7 on 3,000-piece reels. Selection advice: note carefully that this is the standard commercial version — the automotive-qualified sibling carries a Q suffix (BCR430UW6Q) and is a different order code, so do not specify this page's part for AEC-Q100-mandated sockets. Choose the BCR430U platform when a simple constant-current sink with analogue dimming is enough and a full switching LED driver would be over-engineering; the resistor-set current keeps the BOM to a handful of parts. As a linear stage it dissipates the rail-to-string headroom as heat in the external transistor — budget that transistor's safe operating area at maximum rail voltage. Parameters verified against Diodes Incorporated documentation.