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SMD Marking Code - 55B

55B
Total Parts 8/8
Manufacturers Chenmko Enterprise Co., Ltd., Union Semiconductor, Advanced Analog Technology, Eris Technology Corporation
Functions Zener Diode, Linear Voltage Regulator Integrated Circuit, Voltage Detector Integrated Circuit
Cases SOT-143R, SOT-23, SOT-89, SOT-23-5, DO-214AB, SOD-123
Pins 28vdo, 1d, 16vdb, 16dc, 20vda, 16cg, 26vdf, 5d
Description

26.60..29.40V, Izt=5mA, Zzt=44Ω, 225mW

18.0V±5%, Zzt=3.0(65.0mA), Izm=265.0mA, 5W

5.5V±2%, -Reset PPO

26.60..29.40V, Izt=5mA, Zzt=44Ω, 225mW

LDO, 2.6V±2%, 300mA

5.5V±2%, -Reset PPO

5.5V±2%, -Reset PPO

5.5V±2%, -Reset PPO

SMD Code A Part Number Manufacturer Case Pin Description
55B - MMHZ5255BPT Chm SOD-123 5d

Zener Diode

26.60..29.40V, Izt=5mA, Zzt=44Ω, 225mW

55B - SMC5355B Ers DO-214AB 1d

Zener Diode

18.0V±5%, Zzt=3.0(65.0mA), Izm=265.0mA, 5W

55B - AAT60055B-S2 Aat SOT-23 16vdb

Voltage Detector Integrated Circuit

5.5V±2%, -Reset PPO

55B - MMBZ5255BPT Chm SOT-23 16dc

Zener Diode

26.60..29.40V, Izt=5mA, Zzt=44Ω, 225mW

55B - UM14226S Uns SOT-23 16cg

Linear Voltage Regulator Integrated Circuit

LDO, 2.6V±2%, 300mA

55B - AAT60055B-S16 Aat SOT-89 20vda

Voltage Detector Integrated Circuit

5.5V±2%, -Reset PPO

55B - AAT60055B-S15 Aat SOT-143R 26vdf

Voltage Detector Integrated Circuit

5.5V±2%, -Reset PPO

55B - AAT60055B-S5 Aat SOT-23-5 28vdo

Voltage Detector Integrated Circuit

5.5V±2%, -Reset PPO