U421 datasheets – compare manufacturers

Manufacturer Part Number Description
Panasonic Semiconductor Logo Panasonic PU4219 (PU4219 / PU4519) Silicon NPN Epitaxial Planar Darlington Type
SamHop Microelectronics Logo SamHop Microelectronics STU421S P-Channel Logic Level Enhancement Mode Field Effect Transistor
Panasonic Semiconductor Logo Panasonic PU4519 (PU4219 / PU4519) Silicon NPN Epitaxial Planar Darlington Type
Calogic  LLC Logo Calogic LLC XU421 N-Channel Dual JFET
Micross Logo Micross U421 Low Leakage
Rohm Logo ROHM BU4217 Low Voltage Free Delay Time Setting CMOS Voltage Detector
InterFET Logo InterFET IFNU421 Dual Matched N-Channel JFET
Rohm Logo ROHM BU4218 Low Voltage Free Delay Time Setting CMOS Voltage Detector
Rohm Logo ROHM BU4214 Low Voltage Free Delay Time Setting CMOS Voltage Detector
Rohm Logo ROHM BU4210 Low Voltage Free Delay Time Setting CMOS Voltage Detector
Rohm Logo ROHM BU4215 Low Voltage Free Delay Time Setting CMOS Voltage Detector
Sunlord Sunlord PZ2012U421-1R0TF Multilayer Chip Ferrite Bead
Siliconix Logo Siliconix U421 N-Channel JFET Pairs
Rohm Logo ROHM BU4211 Low Voltage Free Delay Time Setting CMOS Voltage Detector
flex flex PKU4213D DC-DC Converter
Calogic  LLC Logo Calogic LLC U421 N-Channel Dual JFET
Rohm Logo ROHM BU4216 Low Voltage Free Delay Time Setting CMOS Voltage Detector
flex flex PKU4217D DC-DC Converters
Micross Logo Micross LSU421 Low Leakage
Rohm Logo ROHM BU4213 Low Voltage Free Delay Time Setting CMOS Voltage Detector