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Eugene TurutaActiveSMD componentsmarking codesdatabookIntroductionSMD-codes for semiconductor components in 2-pins casesSMD-codes for semiconductor components in 3-pins casesSMD-codes for semiconductor components in SOT-89 casesSMD-codes for semiconductor components in SOT-223 casesSMD-codes for semiconductor components in BGA and LPP casesSMD-codes for semiconductor components in 4-pins casesSMD-codes for semiconductor components in 5-pins casesSMD-codes for semiconductor components in 6 and more pins casesConventional cases drawings. Cases pin assignments. PinoutsSMD-codes marking styleSample schematics diagramsLogos, contact and web-adresses of the manufacturers2 - pins 3 - pins SOT - 89 SOT - 223 BGA...LPP 4 - pins 5 - pins 6... - pinsChisinau, 2007 edition
IntroductionSurface mount devices (SMDs) are used in a growing number of commercial and industrial products. SMDshave improved performance over through-hole components due to their smaller size, shorter internal leads, andsmaller board layouts. These factors reduce the circuit’s parasitic inductance and capacitance. SMDs can also bemore cost effective than traditional through-hole components due to the smaller board size, fewer board layers,and fewer holes. Today more than 50% of active semiconductor components are surface-mounted.At the same time, SMD devices are, by their very nature, too small to carry conventional semiconductor typenumbers. Therefore, a somewhat arbitrary coding system has grown up, where the device package carries a simpleone, two or more character or graphic ID code. Thus it is necessary to take into account that the colour and (or)placing of alphanumeric or graphic symbols are also important.Identifying the manufacturers type number of an SMD device from the package code can be a difficult task.Unfortunately, each device code is not necessarily unique.It is possible for various manufacturers to place different devices in the same case with the same SMD-code.For example, with a 6H SMD-code in a SOT-23 case might be either a npn-transistor BC818 (CDIL) or a capacitancediodeFMMV2104 (Zetex) or a n-channel JFET transistor MMBF5486 (Motorla) or a pnp-digital transistor MUN2131(Motorola) or a pnp-digital transistor UN2117 (Matsushita) or a CMOS-integrated circuit- voltage detector with resetoutput R3131N36EA (Ricoh). Even the same manufacturer may use the same code for different devices.To identify a particular SMD device, is necessary to identify the manufacturer, package style and note the IDcode printed on the device.The identification of the manufacturer is possible only if on the case are printed the manufacturer’s logos, but itnot always happens. Besides, sometimes it is possible to determine the manufacturer with indirect tags. Many recentMotorola devices have a small superscript letter after the device code, such as SA C (this smaller letter is merely amonth of manufacture code). Siemens and Infineon devices usually have a lower case 's' (ATs, LOs). Philipsdevices usually have a lower case 'p' (AHp, Z1p, pB0) or '-' (D-Q, Z-S) for the devices made in Hong Kong and 't'(ZtS, tT9, Y7t) for the devices made in Malaysia. In section 5 are submitted the logos of the SMD devices manufacturers.The package style is another problem for the identification of SMD devices. The different manufacturers candesignate identical cases according to the various standards (or according to the internal firm system). Besides thevarious cases can have an identical kind (form) and differ only by sizes, but this distinction of sizes so it is notenough, that can be is measured only by special measuring devices. The conformity of the cases name of differentmanufacturers is submitted in the bottom table:Table 1JEDEC EIAJ Central Rohm Sanyo Hitachi Motorola KEC PanasonicMaximToshibaPhilipsSiemensTO-236 SC-59 SOT-346 SMT3 MPAK2 SC-59 S-Mini Mini3TO-236AB SOT-23 SST3 CP SOT-23TO-243AA SC-62 SOT-89A MPT3 UPAK PW-MiniTO-243AB SC-62 SOT-89BTO252-3 SC-63 CPT3TO-253 SOT-143 SMT4 SOT-143TO-253 SC-61B SOT-143RSOD-123SOD-123SC-76 SOD-323 UMD2 USCSOT-343SOT-343RCMPAK4SC-70 SOT-323 UMT3 MCP CMPAK SOT-323 USMSC-74 SMT6 SM6SC-74A SOT-753 SMT5 SMV Mini5SC-75A SOT-416 EMT3 SMPAK SC-90 SSMSC-79 SOT-523 EMD2 SSFP S-Flat SMini3SC-82UMT4SC-88 SOT-363 UMT6 US6SC-88A SOT-353 UMT5 SC70-5 USVSC-89 SOT-490SOT23-5SC59-5SC-73 SOT-223DO-214AC SOD-106 PMDSDO-214ACSOD-124SC-81SSMini3In the following tables sections the SMD semiconductor components - irrelevant as to whether it is dealing withtransistors, diodes, integrated circuits etc. are plased in separate tables according to numbers of terminals and (or)type of cases and are listed in strict alpha-numeric order by SMD-codes.
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SMDcode Type Function Short descrip
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6... - pinsSMDcode Type Function Sh
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Conventional cases drawingsCases pi
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54N541 23 412311 2 3Fig.28 Top view
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D1Top viewD2Top viewD3Top view65465
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1 2 3 4 5 6 7 8a X Xaa Input GND Vc
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1 2 3 4 5 6 7 8fq G S D Sfr N/C S S
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1 2 3 4 5 6 7 8ud ±CE GND Voutput
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1 2 3 4 5 6 7 8wa GND Feedback Tap
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1a 1b 1c 1dSMD codeSMD codeSMD code
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6a6b6cManufacturer logo6dSMD codeSM
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Sample schematics diagrams1051
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PA14 PA15 PA16PA17PA18PA19PA20PA21P
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PA50PA51PA52PA53PA54PA55PA56PA57PA5
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VR12 VR13 VR14VR15VR16VR17VR18VR19V
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Agi- Agilent Technologies395 Page M
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Htk- Holtek Semiconductor Inc.No.3,
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Ren- Renessas (Hitachi and Mitsubis
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©Turuta EugeneNegruzzi blvd. 5, ap
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