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THE SMD CODE BOOK.pdf - Google Sheets



Smd Code Book 2014 Pdf: A Handy Guide for Electronic Hobbyists and Professionals




If you are interested in electronics, you may have come across some tiny components with cryptic markings on them. These are called surface-mount devices (SMD) and they are widely used in modern electronic circuits. But how do you identify them and find their specifications? That's where the Smd Code Book 2014 Pdf comes in handy. In this article, we will explain what SMD is, what SMD code is, and how to use the Smd Code Book 2014 Pdf to identify and learn about thousands of SMD devices.




Smd Code Book 2014 Pdf



What is SMD?




SMD stands for surface-mount device, which is a type of electronic component that is mounted directly on the surface of a printed circuit board (PCB) without using wires or leads. SMD components are usually very small and have flat contacts or terminals on their sides or bottom. Some examples of SMD components are resistors, capacitors, diodes, transistors, integrated circuits, LEDs, etc.


Advantages and disadvantages of SMD




SMD components have several advantages over traditional through-hole components, such as:


  • They are smaller and lighter, which allows for more compact and portable electronic devices.



  • They have lower parasitic effects, such as capacitance and inductance, which improves the performance and reliability of high-frequency circuits.



  • They can be placed on both sides of a PCB, which increases the density and complexity of the circuit.



  • They can be soldered using automated machines, which reduces the cost and time of production.



However, SMD components also have some disadvantages, such as:


  • They are more difficult to handle and solder manually, which requires special tools and skills.



  • They are more prone to damage from electrostatic discharge (ESD), mechanical stress, or overheating.



  • They are harder to test and repair, especially if they are embedded in multilayer PCBs.



  • They have limited power dissipation capability, which limits their use in high-power applications.



Types of SMD packages




SMD components come in various shapes and sizes, depending on their function and design. Some of the most common types of SMD packages are:


  • Chip: This is the simplest and most widely used type of SMD package. It consists of a rectangular or square body with two or four contacts on opposite sides. Chip resistors, capacitors, diodes, LEDs, etc. belong to this category.



  • SOT: This stands for small outline transistor. It is a type of package that has three contacts on one side and a flat surface on the other side. The flat surface acts as a heat sink for the device. SOT packages are mainly used for transistors and voltage regulators.



  • SOIC: This stands for small outline integrated circuit. It is a type of package that has two rows of contacts on opposite sides of a rectangular body. The body is slightly wider than the chip package. SOIC packages are mainly used for integrated circuits, such as op-amps, timers, logic gates, etc.



  • QFP: This stands for quad flat package. It is a type of package that has four rows of contacts on the four sides of a square or rectangular body. The body is usually larger than the SOIC package. QFP packages are mainly used for microcontrollers, microprocessors, memory chips, etc.



  • BGA: This stands for ball grid array. It is a type of package that has an array of solder balls on the bottom of a square or rectangular body. The solder balls act as the contacts for the device. BGA packages are mainly used for high-density and high-performance integrated circuits, such as CPUs, GPUs, FPGAs, etc.



What is SMD code?




SMD code is a system of alphanumeric characters that are printed or engraved on the surface of SMD components to identify their type, manufacturer, and specifications. SMD code is also known as marking code, device code, or component code.


Why do SMD devices have codes?




SMD devices have codes for several reasons, such as:


  • They are too small to carry conventional semiconductor type numbers or labels.



  • They have different pinouts or characteristics from their leaded equivalents.



  • They are made by different manufacturers who use their own coding schemes.



  • They need to be distinguished from other similar or identical looking devices.



How to read SMD codes?




To read SMD codes, you need to follow these steps:


  • Identify the package style and orientation of the device.



  • Note the ID code printed or engraved on the device. It may consist of one, two, or three characters, depending on the device and the manufacturer.



  • Look up the code in a reference book or online database that lists SMD codes and their corresponding device types, manufacturers, and specifications. You can use the Smd Code Book 2014 Pdf as one of the sources.



  • If there is more than one entry for the same code, use the package style and other clues to narrow down the possibilities. For example, some manufacturers may add a lower case letter or a color dot to their codes to indicate their own identification or variation.



  • If there is no entry for the code or if you are unsure about the device type, you can try to measure its resistance, capacitance, voltage drop, etc. using a multimeter or an oscilloscope. You can also try to trace its connections and functions in the circuit using a schematic diagram or logic analyzer.



Common SMD code formats




There are many different formats of SMD codes used by various manufacturers and devices. However, some of the most common formats are:


  • A single letter: This is usually used for diodes and transistors with two terminals (such as Zener diodes or Schottky diodes). The letter indicates the device type and sometimes the manufacturer. For example, A means BAT85 (Schottky diode) made by Philips.



  • A single digit: This is usually used for resistors and capacitors with two terminals. The digit indicates the value of the component in pF or ohms. For example, 1 means 1 pF or 1 ohm.



  • A letter followed by a digit: This is usually used for transistors and diodes with three terminals (such as bipolar transistors or LEDs). The letter indicates the device type and sometimes the manufacturer. The digit indicates the variant or series of the device. For example, B1 means BC847B (NPN transistor) made by Philips.



  • A digit followed by a letter: This is usually used for integrated circuits with more than three terminals (such as op-amps or timers). The digit indicates the number of pins in the package. The letter indicates the device type and sometimes the manufacturer. For example, 8A means LM358 (dual op-amp) made by National Semiconductor.



  • Two letters: This is usually used for transistors and diodes with three terminals (such as MOSFETs or varactors). The first letter indicates the device type and sometimes the manufacturer. The second letter indicates the variant or series of the device. For example, BS means BS170 (N -ch mosfet 60V 0.115A)



  • Two digits: This is usually used for resistors and capacitors with two terminals. The first digit indicates the first significant figure of the value. The second digit indicates the multiplier or the number of zeros following the first digit. For example, 10 means 10 ohms or 10 pF.



  • Three characters: This is a more complex and versatile format that can be used for various types of devices. The first character is usually a letter that indicates the device type and sometimes the manufacturer. The second and third characters can be digits or letters that indicate the variant, series, value, tolerance, etc. of the device. For example, 1N4 means 1N4148 (switching diode) made by Philips.



What is Smd Code Book 2014 Pdf?




Smd Code Book 2014 Pdf is a free online book that shows SMD marking codes for almost every surface-mount device available on the market. It was created by R P Blackwell G4PMK and updated in 2014. It contains over 3,400 device codes in alphabetical order, together with type numbers, device characteristics or equivalents and pinout information. It also provides links to manufacturers' websites and other sources of SMD device data.


Features and benefits of Smd Code Book 2014 Pdf




Smd Code Book 2014 Pdf has several features and benefits that make it a useful tool for electronic hobbyists and professionals, such as:


  • It is free to download and use.



  • It is easy to navigate and search using the HTML format.



  • It covers a wide range of SMD devices from various manufacturers and categories.



  • It provides accurate and reliable information based on official datasheets and other references.



  • It helps to identify and learn about SMD devices quickly and conveniently.



How to use Smd Code Book 2014 Pdf




To use Smd Code Book 2014 Pdf, you need to follow these steps:


  • Download the Smd Code Book 2014 Pdf from this link.



  • Open the PDF file using a PDF reader software or a web browser.



  • To identify a particular SMD device, first identify the package style and note the ID code printed on the device.



  • Now look up the code in the alphanumeric listing which forms the main part of the book by clicking on the first character shown in the left menu.



  • If there is more than one entry for the same code, use the package style and other clues to narrow down the possibilities.



  • If you want to know more details about the device type, manufacturer, specifications, etc., you can click on the links provided in the book or search online using the type number or equivalent.



Where to download Smd Code Book 2014 Pdf




You can download Smd Code Book 2014 Pdf from this link. You can also find other versions and updates of the book from this website.


Conclusion




SMD devices are widely used in modern electronic circuits because of their small size, low parasitic effects, high density, and low cost. However, they are also difficult to identify and find their specifications because of their cryptic markings. That's why you need a handy guide like Smd Code Book 2014 Pdf to help you with this task. Smd Code Book 2014 Pdf is a free online book that shows SMD marking codes for almost every surface-mount device available on the market. It provides accurate and reliable information based on official datasheets and other references. It also provides links to manufacturers' websites and other sources of SMD device data. You can download Smd Code Book 2014 Pdf from this link and use it to identify and learn about SMD devices quickly and conveniently.


FAQs




Here are some frequently asked questions about Smd Code Book 2014 Pdf:


  • Q: Is Smd Code Book 2014 Pdf the latest version of the book?



  • A: Smd Code Book 2014 Pdf is the latest version of the book that was updated in 2014. However, there may be newer SMD devices that are not included in the book. You can check the website of the author for any updates or revisions.



  • Q: How can I print Smd Code Book 2014 Pdf?



  • A: You can print Smd Code Book 2014 Pdf using a PDF reader software or a web browser. However, you may need to adjust the print settings to fit the page size and orientation. You can also save the PDF file as an image file and print it using an image editor software.



  • Q: How can I contact the author of Smd Code Book 2014 Pdf?



  • A: You can contact the author of Smd Code Book 2014 Pdf by sending an email to g4pmk@marsport.org.uk. You can also visit his website for more information and feedback.



  • Q: What are some other sources of SMD device data?



  • A: Some other sources of SMD device data are:



  • ElectroSchematics.com: This is a website that provides electronic circuits, projects, tutorials, and datasheets. It also has a free SMD code book that shows SMD marking codes for various devices.



  • On Semiconductor: This is a website that provides semiconductor products and solutions. It also has a datasheet for 2N7002L, which is a MOSFET with an SMD code of BS.



  • SOS Electronic: This is a website that provides electronic components and modules. It also has a PDF catalog that shows SMD codes and their corresponding device types and manufacturers.



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