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SOT23 Marking Code
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SOT23 is commonly known for a 3 pins SMD package and is also known as SOT23-3. There is also 5 pins package (SOT23-5), and 6 pins package (SOT23-6). The SOT package is small and normally the full part number cannot be printed on the chip itself. Normally the part number is represented by a marking code printed on top of the SOT23 package. The follows presents some of the SOT23 components marking code, which is useful for reverse engineering use. Warning Note: Please ensure the context of the component used in the electronic design is correct. It is possible to misinterpret the part with same marking code. This marking code reference guide is meant for your convenient. Always check the datasheet to confirm if your marking code matches the part number. SOT23-3 Marking Code Marking Code Package Part Number Description 6B, 6B, 6C, 6D SOT23-3 BC817 npn J3Y SOT23-3 M8050 npn 1D*, 1A*, 1B*, (1BW) SOT23-3 BC846, BC846A, BC846B npn 1H*, 1E*, 1F*, 1G* SOT23-3 BC847, BC847A, BC847B, BC847C npn 1K* SOT23-3 BC848B npn 1GM, 1H SOT23-3 MMBTA06L, MMBTA05L npn J3 SOT23-3 S9013 npn 2TY SOT23-3 S8550 pnp 3BW SOT23-3 BC856B pnp 3D SOT23-3 MMBTH81 pnp, RF transistor 聽3G 聽SOT23-3 聽BC857C pnp 聽 聽 聽 聽 704 SOT23-3 2N7002K-D n-ch S07 SOT23-3 STS2307 p-ch 聽 聽 聽 聽 N76 SOT23-3 DDTD142JU diode K7D SOT23-3 BAS70-04 diode (dual) A1 SOT23-3 BAW56 diode (dual) A4 SOT23-3 BAV70or MIC803 – 31D3V diode (dual)or microcontroller supervisor circuit A7 SOT23-3 BAV99 diode (dual) B6 SOT23-3 BAT54ABAR40AN3-0-T1-G dual diode L05 SOT23-3 78L05or ZLLS500 5V voltage regulatoror Schottky barrier diode 聽 聽 聽 聽 65Z5 SOT23-3 LM6206N3 voltage regulator 6003 SOT23-3 MAX6003 (not sure) voltage reference 65Z5 SOT23-3 LM6206N3 3v3 regulator WV4 57 SOT23-3 聽BAT54S schottky barrier diodes ANW 51 SOT23-3 ??? ??? W29 55, W29 41 SOT23-3 ??? ??? 431 SOT23-3 TL431 Adjustable precision shunt regulators M2A SOT23-3 MMBT2222A npn M7A SOT23-3 MMBT2907A pnp聽 SOT23-5 Marking Code Marking Code Package Part Number Description C20 SOT23-5 LMV7239 comparators A63A SOT23-5 LM321 op-amp A64A SOT23-5 聽LMH6642MF op-amp 313B SOT23-5 MCP6H01 op-amp SRPB SOT23-5 LM27313 dc-dc M5 (eg. M5YU) SOT23-5 24AA16, 24LC16B-IOT EEPROM 16K =VG= SOT23-5 74LVC1G32GW, 74LVC1G32GW-Q100 2 input OR gate LPFG (maybe the same LPFL) SOT23-5 聽??? 聽??? VP9V 聽SOT23-5 聽??? 聽??? 聽 聽 聽 聽聽 SOT23-6 Marking Code Marking Code Package Part Number Description ASRAE SOT23-6 ZXMN2B03E6 n-ch ANTAL SOT23-6 ZXM62P03E6 p-ch JA8K, JA8R SOT23-6 TS5A3159 SPDT Analog Switch AJxx, AJ6G, AJ03, AJ1M SOT23-6 MCP4725A0T-E/CH digital to analog converter D771 SOT23-6 聽DAC7571 12-bit Digital to Analog 5ABK SOT23-6 聽(maybe) UM1665 聽DC-DC Boost Converter 58 SOT23-6 SI3458DV n-ch聽 Electronic Reverse Engineering ServicePIC-CONTROL provide electronic reverse engineering service for our business clients. Check out our electronic reverse engineering service on our website or contact us for further information. Please also visit the main resource page for other electronic reverse engineering resources. 
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