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Questions tagged [packages]

In electronics packages refer to the physical encapsulation of a device. Most package names are standardized, so for example a TO-92 package will have similar dimensions and pin spacing between manufacturers so the same PCB footprint may be used. Be aware however many packages have subtle variations, for example TO-206AA, TO-206AB and TO-206AC.

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Identify this packaging

I've seen this packaging used by many companies, specifically in mobile equipment, automotive ECU's, marine, and other harsh environment applications. I doubt all these manufactures are making the ...
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LED Package/Case

I could'not find the packaging searching online. Can you tell me the package/case types of the LED (right) and PD (left) below? Thanks in advance.
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‘One for all’ standardized land pattern v.s. specified land pattern in datasheet

I’ve designed lot of ‘simple’ PCBs for hobby and proof-of-concept purposes, but never for (mass)manufacturing. In order to do so in the future, and further expanding my design skills and knowledge, I’...
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Does Crystal/Oscillators package matter?

I design a lot of PCBs that uses microcontrollers with external clocks. For some reason a lot of the example designs always tend to use the big generic HC-49 package. Even factory made modules that I ...
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Why does this crystal oscillator have a window?

I came across this device just now, and I can't think of any reason for it to have the window that it has. This isn't just a cutaway display image, either; the datasheet specifically mentions that ...
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Why do these two resistor networks measure differently?

Why do these two resistor networks measure differently? Aren't two 100k resistors in series supposed to be equivalent to a single 200k resistor? These are being simulated with Circuit Wizard.
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Using decapped ICs in production

We were looking for a very specific type of ADC in a small package for one of our projects, and found something suitable in a TSSOP. We wanted to save more space, so looked into getting bare dies; the ...
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27 views

Diifference between INA827AIDGK & INA827AIDGKR

Whats the difference between the same package of the IC INA827 - INA827AIDGK vs INA827AIDGKR? The datasheet makes no mention of any differences. Except in in.element14.com where INA827AIDGK is ...
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replacing obsolete HEMT and differences between Package/Case and Supplier Device Package

I've been designing an amplifier, with ATF33143 as my HEMT in mind. Yet, I just found out the said HEMT went obsolete. So I started looking at SKY65050-372LF as a possible replacement. On the DigiKey ...
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Intel max 10 dimensions - datasheet & BSDL mismatch

TL;DR: The BSD file from Intel doesn't match the datasheet. What are the right dimensions? BSD: https://www.intel.com/content/dam/altera-www/global/en_US/others/support/devices/bsdl/10M02SCM153.bsd ...
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118 views

Name of an enclosure in the shape of a DIP

Years ago, in a junk bin far away, I saw a device which was a small plastic box with protruding pins in the form of a 14-pin DIP — so that you could solder jumpers or small axial components to the ...
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What is this cylindrical electronic component with six pins?

I bought a bunch of electronics in a purchase, so I wound up with lots of components I didn't expect. I could identify all of them except these 4. I have 4 little cylinders. Two are stamped "12" and ...
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Pin numbering of FPC1020AP chip

I have a single FPC1020AP chip as shown in the picture below. The datasheet for FPC1020 says there are 19 pins, of which 15 are used. However, I cannot find the datasheet for this exact chip, which ...
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Surface Mount package standards guide?

Is there a universal guide-line for the mechanical dimensions and tolerances of Surface Mount packages across the industry? I'm very new to SMT machine programming (<1 year), so I've been trying ...
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1answer
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Different footprints for different surface mount Resistor packaging?

When using the same surface mount package size (0402) for all my resistors on a board, but using resistors from different manufacturers or with different resistance values, should I create a different ...
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Altium: What stands for 'N' , 'M' and 'L' as a suffix for SOIC packages

I've noticed while using Altium that SOIC ICs have 3 different SOIC PCB layout to select from, they are named NSOBX_L, NSOBX_N and NSOBX_M (being X de number of pins). The difference I've noticed is ...
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SO-8FL Package Footprint Eagle PCB

I am making a PCB with a component that is of the Package SO-8FL. The component is n-channel MOSFET NVMFS4C03N by ON Semiconductor and the datasheet is here. I started to make the package in Eagle, ...
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IC package reliability with physical stress

One of the ICs for my design comes in LQFP, TSSOP, QFN and even WLCSP packages. I don't care about the footprint, and the only thing that I want to maximize with the package choice is reliability ...
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What is the difference between SOT 23 and SOT 23-3 package types?

I am faced with two types of packaging: SOT 23 SOT 23-3 Is there some difference between them? Based an article in Wikipedia it seems like there are no differences.
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What is “folded SMA” package of SMD?

There are three types of package in specification: SMA, Folded SMA and Clip SMA. The link for datasheet: SK32A What is the differences between them ??? I suspect, that Folded SMA it is SMAF, but I ...
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998 views

How to properly define BGA footprint in Eagle?

This question is somewhat relevant to this one. However I am sure it well deserves to be separate. I created a custom device/symbol/footprint for an ARM MCU. However I am doubtful whether I created a ...
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MOSfet thermal design: die-to-package always DRAIN?

All the MOSfet chips seem to have substrate = DRAIN, which means that the heat-dissipation path goes that way. It is assumed that the package DRAIN pin would conduct away most heat from the package to ...
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Recommended package size and type for a surface mount linear regulator IC that will be hand-soldered?

I am designing a board that needs a couple linear regulators (5.5v to 3v and 3v to 1.6v) but I am having difficulty selecting a suitable surface mount package type and size that will allow me to hand ...
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1answer
119 views

Can I use different package inductor in impedance matching circuit of NRF52832 design

I am designing a custom PCB with NRF52832 IC. According to datsheet, required specification of inductor L1 are:3.9nH, 0402 package, 5% and a High-frequecy chip inductor. Can I use other package ...
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What is this regulators package ?

I'm reverse engineering / hacking a Chinese board which has the footprint for this regulator which i want to replace. I am not quite sure what the package is though, I'm certain someone here does.
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QFN20 package sizes

I'm trying to use the capacitative touch chip CPT112S for a project. It comes in QFN20 3x3 package size but the pad layout is different to what I expected and so doesn't fit the DIP adapters I have. I'...
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How do I find circuit board layouts (footprints/packages) for embedded processors?

I am seeking layouts for mobile processors like the ones in phones. I am not sure which processor I will use yet but I am just trying to get a general idea of where to find these layouts.
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What is the difference between Commercial and Industrial temperature range IC physical parts?

If I buy the Industrial and Commercial variants of the same IC, besides the markings what differences are there in the actual parts? Seems like they must use the same die, so is it different ...
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Securing a PCB board to a plastic casing - can I just glue the bottom?

I have an inertial measurement unit PCB that picks up changes in acceleration. I want to secure it inside a plastic box/casing. The products (and pictures) I want to use are below: https://www....
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Remove glass top from a TO can packaged VCSEL

I have a VCSEL packaged in a TO-46 can (image here / datasheet with package dimensions). I need to remove the glass top – with or without the silver-coloured cylinder – without damaging the laser ...
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1answer
7k views

Is there a difference between SOIC and SOP?

I'm looking at two integrated circuit packages: SOIC and SOP. They seem (almost) identical (pitch, overall size, etc...) SOP SOIC Is there any important differences between these two packages that ...
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How to solder surface mount chip

I have to solder a chip in a TSSOP-20 package on a board but unfortunately I have no "pcb oven". During the design I had access to a such oven but it's no longer possible. After some search on ...
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What is the impact of package on SMD capacitor

Most of electronic component exist in different package for different reason, it can either be power rating, reachable value, power dissipation... As far as I understood, the size of resistor ...
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247 views

Why are 40 pin and above DIP packages generally wider than 28 pin and below

Take for example this datasheet for a Microchip PIC, the 40 pin package has a width of between 0.485 - 0.580 inches, while the 28 pin variant is between 0.24 - 0.295 inches. I have noticed this is the ...
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Reading package drawings (from TI)

I am wwondering what a certain parts of the drawing mean. For example in the picture below, what mens 24x in front of the some dimensions? In the down-right corner, what are numbers 0.1 and 0.05 for ...
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820 views

Are there any SOT-23 BJT's with swapped Base and Emitter pins? [closed]

The standard NPN BJT in SOT-23 package has the following arrangement of pins: Do you know of any transistor that has pins 1 and 2 reversed? So that 2 is the base while 1 is the emitter (Doesn't ...
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1answer
282 views

Cost effect of different component packages during PCB assembly

We are looking at starting PCB design in house, up until now we have outsource design and manufacture. This means that we have yet to see the real cost of the PCB, components and assembly as discrete ...
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4answers
625 views

Proper board layout for high power SMT FETs

I came across an SMT FET (IPT015N10N5ATMA1) that has an output of 300Amps in a rather small form factor. Are thermal vias enough to get heat away from the 8-PowerSFN package? Or would something like ...
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How practical are Test Sockets?

I've been looking at getting a Test Socket as of late to try and test out a bunch of old micro controllers on dead boards. However, these test sockets are very expensive when compared to their PCB-...
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1answer
186 views

N Mosfet with 8 pinout

I was wondering why some MOSFET transistors like This one has 8 pinout instead of 3 ?
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193 views

Electronics components casing or packaging style types and diferences?

Is there any good visual guide or reference that explains the different types of casing styles like these ones that I come across every time I try to buy a component on farnell website: ...
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0answers
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Finding an EEPROM substitute

I'm playing with a Atmel MEGA-1284P Xplained dev board which has a footprint for this Atmel Flash chip. I'm doing some early development for a product that will be using this ST EEPROM. It would be ...
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2k views

If the integrated circuit die is very small what is the role of the extra circuit packaging?

I noticed that the actual integrated circuits of processors, GPUs, ROMs, specific integrated circuits and other ICs are very small but they usually come in a package that is much bigger. What is the ...
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1k views

Why do single op-amp DIP packages have 8 pins, rather than 6?

Single op-amps often come in 8-pin DIP packages, with 5 of those pins being standardized (or maybe it's just de-facto) like in the ones below. Older op-amps such as the LM741 (first image) have a ...
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1answer
73 views

Dimensions in package outline

I don't really know what is with those stacked dimensions 5.00/4.90/4.80 on the ADP1708 package drawing.
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45 views

Reference of component

I´m trying to repair my lock control in my car. And this board seems like the problem, so I want create a new board (exactly the same) based on this. But I facing a challenge: I cant determine what ...
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1answer
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Mounting a PCB with no holes [closed]

Apart from this edge mounting kit from Adafruit, what are some ways to mount a PCB that does not have mounting holes? I'm looking for non-permanent mounting solutions that take up little real-estate ...
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214 views

does packages have to be centered in eagle to export valid pick and place data?

I am working on a PCB featuring this SD card connector http://media.digikey.com/pdf/Data%20Sheets/Amphenol%20PDFs/101-00313.pdf In the technical drawing, it seems that the origin of the part is the ...
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1answer
164 views

How are metal leads on through hole parts made?

For example, consider a TO-92 packaged part: How is one of its leads manufactured? Can they be customized?
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244 views

estimate (measure) parasitic inductance of a lead frame of a chip package

UPDATE: How to measure (/make a good approximation of) parasitic inductance of a lead frame of a chip package? This parameter is very important at high frequencies (1GHz and more) because it affects ...