Speaking of this time in the United States Amazon Amoy mobile hard disk, but also to talk about the background!
As a small film enthusiast in Japan, the hard disk capacity has been bothering me. When the 160-gigabyte 3.5-inch hard disk was used as a front-end machine for ten years, “small movies†were still mostly rmvb format, with a capacity of four or five hundred megabytes and rarely exceeding 1 gigabyte. Later, after 320G, 500GB, until the first time five years ago, the notebook had enjoyed 1TB treatment for the first time.
Now that its desktop has also been changed to 1TB, there is an additional 1TB mobile hard disk, according to reason, 2TB enough to use ah. But in fact, the current "little movie" is not 480P, and all have become 1080P HD effects. There are still several G's, and 2TB can't stand still. (The key is not willing to delete any small movie.)
Alas, my 1TB mobile hard disk is red, with only 79.6GB left, and the desktop's built-in mechanical hard disk is also in a hurry. At present, this state is still the result of many times I have finished the deletion. I must know that male compatriots are thinking about the problem with the lower body and are reluctant to delete any "little movie".
Western Digital's hard drive was followed by my "small library" for five years.
The earliest used in their HP 2230S notebook, and later notebook sold, this piece of "little fine library" was split out of me, and then equipped with a Jingdong to buy 29.9 yuan IT-CEO mobile hard disk box, composed of a 1TB mobile hard disk . After using it for more than two years, he worked hard and comforted the world on countless nights.
Unfortunately, the movie is full and the reality is very backbone.
In the face of the surging 1080p action movie, 1TB was awkward, so in April I decided to think hard and decided to upgrade!
Since the desktop is already a dual hard disk (256GB solid state +1T machine), we plan to take the 1T mobile hard disk and upgrade to 2TB. Compared to Jingdong's cheapest 2T brand mobile hard drive, Toshiba's new polar bear, Yijie E600 and Lenovo F309 appear in the line of sight, the price is within 600.
Just when I was planning to start my business with Toshiba in JD, I took another look at Aunt Zhang and suddenly discovered that Seagate's SLIM 2T mobile hard disk from Meiya was worth 484 yuan plus a tariff of 63 yuan, totaling 547 yuan. At that time, the system displayed 12-20 days of delivery, because the United States Amazon can direct mail, but also saves me from looking for transshipment companies and staring at the trouble, so decisively orders.
PS: Aunt Zhang’s recommended articles at the time
In JD.com, the popularity of this mobile HDD was high, and there were 710,000 reviews and only 6800 bad reviews. The favorable rate was 97%. So relieved!
I placed orders early in the morning on April 2nd, and the system indicated that it would be delivered on April 2nd. I wouldn’t use it anytime and slow down slowly. Meiya received the customs clearance information at 4:25, and then shipped it out on the same day. As a result, it entered China on April 6th. The customs clearance was very fast and I received it on April 9.
The entire sea scouring process only takes a week, which is also related to the United States Amazon direct mail China, but the delivery time is expected to be nonsense in the system, this is my second sea Amoy. I remember 4 years ago the first time Haitao (using a transshipment company) bought a Philips RQ1150 razor on Amazon Black Friday in the United States, Nima spent 370 yuan, while Jingdong sold 1399 yuan, and the store sold 2,500 yuan.
Although the speed and price of direct mail in the United States and Asia are very strong, but this packaging is also too simple? Speaking that Jane is to lift it, if it is plausible in the United States, but came to China across the sea, a broken foam bag is too "to fool "People", right, you have the ability to send me envelopes directly!
No wonder that American e-commerce and mobile payments are less developed than China, and it looks like it is a fact. Domestic even Taobao new store will give you a box to send ah, no matter the size, I bought a TF card reader, Bluetooth adapter and many other small objects on Taobao, at least people sent me the boxes of the children's eight classics.
Later, in order to prevent transport damage, I was forced to spend the night trying to sweep the bad roads. All of them were forced!
Can not wait to unpack and get home, good guys only have a small ticket, wood has any suspected invoice material evidence. The U.S. tax is so stringent. Is it the case that electronic invoices have been opened? No matter how small, the price above the ticket is US$70.39. If the mobile hard disk is broken in the future, don't know Seagate is a global warranty, or rely on this ticket to send it back to repair? Know the trouble to answer!
Truthfully speaking, for the mobile hard drive products, the soft plastic liner is still relatively weak, the general bump may be no problem, but the savage transport is suspended.
This Seagate SLIM mobile hard drive 3 features, simply said:
A: The material is very high-end, is the metal shell A wire drawing process, a lot more than a ticket plastic shell mobile hard drive, not cheap.
II: The colors are particularly rich. Gold, silver, black, white, blue, and red do not speak. They also learn that Apple has made a rose gold and it is not rigid.
Three: thin ah, built-in 7mm ultra-thin hard drive, the thickness of the box is 12.1mm. (General mobile hard disk 15mm start).
Seagate SLIM compared to my phone looks:
Too lazy, directly with the official data, Seagate SLIM mobile hard drive measurements are 113.5x76x12.1mm, weighs 159 grams, is certainly smaller than the average Android phone, compared to my 3.5-inch Android phone a few years ago is also shorter , Visually almost as big as iPhone4.
In addition to being small, the thickness of this mobile hard disk is also very good.
Not to mention that it is the world's thinnest mobile hard disk, but compared to 2T's large capacity, people do 12.1mm thickness. Of course, the world's most explosive 2.5-inch mobile hard disk, it should be Seagate's right? I checked a new product called Ultra slim, thickness is only 9.6mm (also 2T). Unfortunately there is no special price, otherwise I really want to buy it.
In other words, the 4TB Seagate SLIM is even as thick (20.5mm) as Toshiba's new black beetle 2T HDD (also 20.5mm).
As for the interface, I have never known this clamor. One side is the standard Micro USB data port, and the other is the power supply port. It is very easy to use. I previously used a 2.5-inch hard disk box, which is also the interface, but the USB plugged into the front of the desktop is sometimes not powered (I know the front USB voltage is low), but Seagate will not at all.
Make one sentence: The transmission speed is of course the USB 3.0 standard (there is a speed measurement).
Seagate's design is still very particular, and the nameplate on the back is diagonally affixed with a sense of fashion.
As mentioned above, after all, sending mail from the United States to China, and using a broken paper bag to cross the ocean, it's hard to avoid fearing bumpy bad sectors. So on the night, he slowly scanned the speed and did not sweep it in the early morning of the next day. The end result was all green and I was relieved to use it. Otherwise, hey, definitely looking for Amazon trouble.
This mobile hard disk speed test, in the sales page can not find the speed, the official propaganda is about the light start, do not say speed. Recall, it seems that almost all mobile hard disk do not say how much the speed, because the sales of different batches, the built-in hard disk speed has changed?
After power-on, the corner of the Seagate SLIM mobile hard disk will light up. This lamp's shape is a bit sharp - "a bar."
Well, start the vast migration process:
Not to mention Hatano Yui, Aoi Sang, and Wu Tenglan. I don't know any of them!
Even Yoshizawa Ozawa, Matsushima maple, Ozawa Maria, Iijima Ai, Sakura Hat, Mikiko Miki, Hoshino Hikaru, Shiraishi Hitomi, Hitomi Hitomi, Aida Peach, Asakusa, Kobayashi Hitomi, Yoshiki Maiko, Miho Yuki, Komuro Yuri, Akihiro Miki, Asaoka Shiroyama, Mori Mori, Kitahara Rina, Akimoto Yumi, Kawachi Rimi, Hosokawa Yuriko, Matsuzaka Shishiko, Kawashima and Tsukishi, Hami Miho, Ozawa Nami, Fungmaru, Kasayama Reiko, Kanazawa Wenko, Ryoko Mori, Suzuki Mami, Sakuraiiya, Fragrant Hills, Kikuta, Uehara Kazama, Kitahara Takako, Sakuragi Ami, Ozawa Miki, Fujisaki Akira, Harahara Yoshiharu Lih, Hoshino Aki, Yukiya Koto, Miho Sakura, Morishita Yuri, I do not know.
Honestly, do you really think that I was 2T for AV?
Actually, I did it for you.
Since I bought a 75-inch TV last year (where 嘚 贴 ↠我 穿越 穿越 穿越 穿越 穿越 穿越 穿越 穿越 穿越 穿越 , , , , , , , , , , , , , , , , , , , 4 4 4 4 4 4 4 4 4 4 4 4 4 4 Ten years ago I had a 160G hard drive enough to hold a movie?
Since 4K sources are difficult to download, I have searched for human flesh on the Internet. This is still the case above, but there are also 806GB. Plus there are a few hundred G of 1080P movies, before the 1T hard drive really enough.
And 4K movie download time is very long (large capacity, less seed), although my home is 100M broadband telecommunications, even if the Thunder member to accelerate, it can only reach 2-5MB / S, download days and nights is a common thing - "I can't bear to delete even if I watch 4K movies."
The above picture shows the speed of dragging a 4K movie folder from an old 1T mobile hard disk to a new 2T mobile hard disk. In total, it is 806 GB. The transmission speed is maintained at 108 MB/S, and it is dropped to 50-70 MB/S. Hours are completed.
The above figure is my current hard disk usage, C disk is solid, D is 1T machinery, G is the 2T machinery bought this time. Although Seagate's 2T mobile hard disk currently has half the capacity, it is estimated that it will not be enough for the end of the year. Fortunately, there are currently not enough 4K movies, and 2TB is almost saturated.
In addition, all the hard drives in my house are not partitioned. The C drive was the Intel 520 solid state machine that was bought in October last year (it was discontinued several years ago. I am the official version for the new version). The open version is actually an old version of the PE5000 MLC particle. It took me more than 500 pieces, but my heart is worth it!
Finally, say another storage device - SD card (measuring point of this card I)
10 years ago, I used a 256MB PQI MMC card and spent 250 yuan. I still have contact with the seller. Today, a new 64GB high-speed card is also more than two hundred yuan, at the beginning of the year also started the Toshiba UHS-I U3 speed, reading can reach 95MB / S, and now give Canon 7D SLR in use.
So, I was full of emotion, where did the time go? The replacement of storage devices is really fast! ! !
6 Layer PCB
6 Layer PCB - stackup & prototype & price & manufacturing
What is 6 Layer PCB?
6 layer PCB board is, in general, a 4 Layer PCB board with 2 extra signal layers added between the planes. The 6-layer PCB classic stackup includes 4 routing layers (2 outer layers + 2 internal layers) and 2 internal planes (one for ground and the other for power). This enhances the EMI dramatically by offering 2 buried layers for high-speed signals and 2 surface layers for routing low-speed signals. The signal layers should be closed to the adjacent planes.
6 Layer PCB Prototype Fabrication China Manufacturer
Jinghongyi PCB has been committed to the production of multi-layer PCB and prototype PCB for nearly 10 years. The largest number of multi-layer printed circuit boards for customers are 4-layer, 6-layer, 8-layer, 10 layer, 12 Layer PCB and above. In order to ensure the quality of PCB products, we constantly improve and upgrade the production process. PCB surface treatment technology has hot air leveling(HASL), OSP, electroless nickel, immersion gold, immersion silver, immersion tin and so on.
The printed circuit board is basically composed of the pad, via, solder mask layer, silkscreen layer, copper wire, and other parts. Among them, solder mask refers to the part covered by ink on PCB. Because most PCB uses green ink, the green ink part that can be seen is solder mask. The role of the solder mask in controlling the reflow welding process is very important. In addition to green ink, the welding layer can According to the different needs of customers, and can also be customized in a variety of colors, such as green, blue, black, red, white, yellow, purple. Of course, the price will vary with the color of the solder mask. Green oil is the one with low price and stable quality, which is also the reason why green oil is most used. The price of black oil, red oil, and white oil is almost the same, slightly more expensive than green oil, and the price of rare inks such as yellow and violet oil is the highest. In addition to the color of the solder resist ink, there are also matte and bright, matte ink color.
Based on our very experienced PCB engineer, we can help you in the 6-layer PCB stack up and design as much as possible.
In addition to providing you with 6-layer PCB and prototype manufacturing, we also provide one-stop prototype assembly services, including electronic components procurement, stencil, etc. The turnkey printed circuit board assembly services make your R&D work easy and time-saving.
6 Layer PCB Stackup and Design
What is PCB stack UP?
PCB Stack up refers to the arrangement of copper and insulation layers that make up PCB before the layout design of circuit board. Although stacking allows you to get more circuits on a single board through various PCB layers, the structure of PCB stacking design has many other advantages:- The PCB layer stack can help you minimize circuit noise and radiation and reduce impedance and crosstalk problems in high-speed PCB layouts.
- A good stacked PCB stack can also help you balance the need for low-cost, efficient manufacturing methods and focus on signal integrity issues.
- Proper PCB stacking can enhance the electromagnetic compatibility of your design.
- For PCB-based applications, stacked PCB configurations are usually good for you.
Why do PCBs stack up?
The irreversible development of modern electronic products has increasingly pushed PCB towards such needs as miniaturization, light weight, high speed, better functionality and reliability, and longer life, which has led to the popularity of multi-layer PCB. Two or more Single Sided PCB and/or Double Sided PCB are stacked together by a combination of semi-solid adhesives called "prepregs" to form multilayer PCBs through reliable predefined interconnections between them. There are three or more conductive layers in a Multilayer PCB, two of which are outside, and one is synthesized in an insulating board. With the increasing complexity and density of PCB, some problems may arise, such as noise.
One of the most important factors to determine the performance of product electromagnetic compatibility (EMC) is to plan the optimal multi-layer stack up. The carefully designed cascade can minimize radiation and prevent the circuit from being disturbed by external noise sources. Good stacked PCB substrates can also reduce signal crosstalk and impedance mismatch. However, poorer stacking may increase EMI radiation, because impedance mismatch will lead to reflection and ringing in the system, which will greatly reduce the performance and reliability of the product. Then, this article will focus on the layer stack definition, design rules and basic considerations.
Most six-layer PCB consist of four signal routing layers and two planes. From an EMC perspective, a 6-layer Printed circuit board is usually better than a 4 layer PCB board.
6 Layer PCB Stackup
6 layer 1.6 MM standard stackup and thickness
Fig. 1 One of the stackup methods of 6-layer PCB
With six layers available the principle of providing two buried layers for high-speed signals is easily implemented as shown in Fig. 2. This configuration also provides two surface layers for routing low speed signals.
Fig. 2 Less common 6 layer PCB stackup
Not nearly as common, but a good performing stack-up for a six-layer PCB is shown in Fig. 2.
Fig. 3 Another performing six-layer PCB board stackup
Another excellent performing six-layer PCB board stackup is shown in Fig. 4. It provides two buried signal layers and adjacent power and ground planes and satisfies all five objectives. The big disadvantage, however, is that it only has two routing layers -- so it is not often used.
Fig. 4 Another excellent performing six-layer PCB board stackup
6 Layer PCB Stackup for EMI/EMC
EMI/EMC Return Current 6 Layer PCB Issue
EMI/EMC Return Current 6 Layer PCB Solved
Types of 6 PCB stack up-how to choose?
PCB materials and stackup thickness commonly used in multilayer circuit boards.
| 6 Layer Stackup - 0.8mm thickness | ||||||
| layer order | layer name | material type | material description | dielectric constant | thickness | copper weight |
| 1 | top | copper | signal | 0.035mm | 1 oz | |
| 2116 | prepreg | 4.5 | 0.12mm | |||
| 2 | inner 1 | copper | plane | 1 oz | ||
| core | 4.6 | 0.2mm | ||||
| 3 | inner 2 | copper | plane | 1 oz | ||
| 2116 | prepreg | 4.5 | 0.12mm | |||
| 4 | inner 3 | copper | plane | 1 oz | ||
| core | 4.6 | 0.2mm | ||||
| 5 | inner 4 | copper | plane | 1 oz | ||
| 2116 | prepreg | 4.2 | 0.12mm | |||
| 6 | bottom | copper | signal | 0.035mm | 1 oz | |
| Final board thickness: 0.8mm±0.1mm | ||||||
| 6 Layer Stackup - 1.0mm thickness | ||||||
| layer order | layer name | material type | material description | dielectric constant | thickness | copper weight |
| 1 | top | copper | signal | 0.035mm | 1 oz | |
| 2116 | prepreg | 4.5 | 0.12mm | |||
| 2 | inner 1 | copper | plane | 1 oz | ||
| core | 4.6 | 0.3mm | ||||
| 3 | inner 2 | copper | plane | 1 oz | ||
| 2116 | prepreg | 4.5 | 0.12mm | |||
| 4 | inner 3 | copper | plane | 1 oz | ||
| core | 4.6 | 0.3mm | ||||
| 5 | inner 4 | copper | plane | 1 oz | ||
| 2116 | prepreg | 4.2 | 0.12mm | |||
| 6 | bottom | copper | signal | 0.035mm | 1 oz | |
| Final board thickness: 1.0mm±0.1mm | ||||||
| 6 Layer Stackup - 1.6mm thickness (preferred materials) | ||||||
| layer order | layer name | material type | material description | dielectric constant | thickness | copper weight |
| 1 | top | copper | signal | 0.035mm | 1 oz | |
| 2116 | prepreg | 4.5 | 0.12mm | |||
| 2 | inner 1 | copper | plane | 1 oz | ||
| core | 4.6 | 0.6mm | ||||
| 3 | inner 2 | copper | plane | 1 oz | ||
| 2116 | prepreg | 4.5 | 0.12mm | |||
| 4 | inner 3 | copper | plane | 1 oz | ||
| core | 4.6 | 0.6mm | ||||
| 5 | inner 4 | copper | plane | 1 oz | ||
| 2116 | prepreg | 4.2 | 0.12mm | |||
| 6 | bottom | copper | signal | 0.035mm | 1 oz | |
| Final board thickness: 1.6mm±0.1mm | ||||||
| 6 Layer Stackup - 1.6mm thickness (non-preferred materials but possible) | ||||||
| layer order | layer name | material type | material description | dielectric constant | thickness | copper weight |
| 1 | top | copper | signal | 0.035mm | 1 oz | |
| 2116 | prepreg | 4.7 | 0.2mm | |||
| 2 | inner 1 | copper | plane | 1 oz | ||
| core | 4.6 | 0.5mm | ||||
| 3 | inner 2 | copper | plane | 1 oz | ||
| 2116 | prepreg | 4.5 | 0.12mm | |||
| 4 | inner 3 | copper | plane | 1 oz | ||
| core | 4.6 | 0.6mm | ||||
| 5 | inner 4 | copper | plane | 1 oz | ||
| 2116 | prepreg | 4.7 | 0.2mm | |||
| 6 | bottom | copper | signal | 0.035mm | 1 oz | |
| Final board thickness: 1.6mm±0.1mm | ||||||
| 6 Layer Stackup - 2.0mm thickness (preferred materials) | ||||||
| layer order | layer name | material type | material description | dielectric constant | thickness | copper weight |
| 1 | top | copper | signal | 0.035mm | 1 oz | |
| 7630 | prepreg | 4.7 | 0.2mm | |||
| 2 | inner 1 | copper | plane | 1 oz | ||
| core | 4.6 | 0.6mm | ||||
| 3 | inner 2 | copper | plane | 1 oz | ||
| 7630 | prepreg | 4.7 | 0.2mm | |||
| 4 | inner 3 | copper | plane | 1 oz | ||
| core | 4.6 | 0.6mm | ||||
| 5 | inner 4 | copper | plane | 1 oz | ||
| 7630 | prepreg | 4.7 | 0.2mm | |||
| 6 | bottom | copper | signal | 0.035mm | 1 oz | |
| Final board thickness: 2.0mm±0.2mm | ||||||
6
Layer Stackup - 2.0mm thickness (non-preferred materials but possible)
layer order
layer name
material type
material description
dielectric constant
thickness
copper weight
1
top
copper
signal
0.035mm
1 oz
2116+7628
prepreg
4.7+4.7
0.12mm+0.185mm
2
inner 1
copper
plane
1 oz
core
4.6
0.6mm
3
inner 2
copper
plane
1 oz
2116
prepreg
4.7
0.12mm
4
inner 3
copper
plane
1 oz
core
4.6
0.6mm
5
inner 4
copper
plane
1 oz
2116+7628
prepreg
4.7+4.7
0.12mm+0.185mm
6
bottom
copper
signal
0.035mm
1 oz
Final board
thickness: 2.0mm±0.2mm
6 Layer PCB Quote and Price
6 Layer PCB Prototype Price
Of course, at the same time, we also provide sample production services for other PCB products to verify your design as soon as possible.
With regard to delivery, we can provide 24-hour, 72-hour urgent service. No matter where you are in the world.
6 Layer PCB Manufacturing
- Manufacturable PCB Layers
We have abundant experience in manufacturing multi-layer circuit boards, not only in the production process, but also have many years of professional PCB engineers.So if you have multilayer PCB to produce, no matter how many layers, just let us know.
- What size of 6-layer circuit boards can you produce?
According to our PCB manufacturing capability, we have no size limitation.
- PCB Laminate Types
We offer a variety of PCB laminates ranging from FR4 130Tg for lower heating temperatures up to FR4 180Tg for higher temperatures. Also offered are Polyimide, Taconic, Rogers and Nelco material types.
- Manufacturable Thickness of 6-Layer Circuit Board
As with the number of PCB layers we can manufacture, we still have no restrictions on the thickness of the six-layer PCB and can manufacture it.
- PCB Surface Finish Types
We offer various PCB finishes including HASL (Solder), ENIG, Immersion Silver, Immersion Tin, Hard Gold, Entek/OSP, Unclad, Pb Free HASL, Selective Gold and ENEPIG.
Why order 6 layer PCB from JHY PCB?
You will get it after check below advantages.
1. Good quality and price: We are experienced in producing six layer PCB, cost and time can be controlled well. This can help our customer to order good boards in cost-effective price.
2. Short Turnaround Times:
3. No Minimum Quantity: 1 pcs of PCB can be offered.
4. More orders, more discount.
5. Custom PCB Sizes
Printed Circuit Boards,6 Layer PCB,6 Layer PCB Price,6 Layer PCB Prototype
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