The Dependable Small PCB

The advancement of technology necessitates the use of small-sized circuit boards.

These mini boards are found everywhere these days—

Mobile phones, chargers, USB ports and computers all have them.

If you are in the electronics industry,

No doubt you need a world-class supplier such as PCBTok.

We’ve been making circuit boards since 2008,

And we’re great at it. Take the word of over thousands of satisfied customers!

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Empowering New Tech With PCBTok’s Small PCB

We are a top provider of PCBs. Choose us to help your devices adopt new technology.

  • For your peace of mind, small PCBs are IPC Class 2 and 3 certified.
  • We offer custom PCB shapes, sizes, and colors.
  • We assist you as well with design and prototype services.
  • No MOQ is required for any order.
  • However, upon request, we will gladly provide any sample you require, including soldering samples.

Over the years, our products have shown how they can be applied to our customers’ projects.

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Small PCB By Feature

Small Flex PCB

Customers need this for flexible industrial applications that frequently involve moving parts, such as some automotive parts and packaging machinery.

Small Rigid-Flex PCB

Rigid-Flex PCBs in smaller sizes are also used in industrial machinery tools. For instance, baggage equipment, palletizers, controllers, etc.

Small Rigid PCB

Small-sized boards can fit inside machines that require rigid type PCBs. As an example, there are paint equipment, automated assembly tools, etc.

Small medical PCB

Due to the rise of electronic health records for health monitoring with wearables, smaller versions of PCBs are becoming more common.

Small Automotive PCB

When ordering a small-sized automotive PCBs, you may refer to components for car gauges, motor switches, fuel sensors, fuses, etc.

Small Mobile PCB

Small mobile PCBs may be so compact that they can fit inside rings or other objects that use near-field communication.

What is a Small PCB?

Like no other PCB, on the Small PCB or mini PCB,

Small sized microchips chips or ICs are inserted.

The most obvious place to find this type of PCB is inside smartphones.

Small Audio PCBs, like those utilized in Bluetooth earbuds, are another example.

There are camera PCBs that fit into cameras’ small spaces

Additionally, there are Embedded PCBs, which are fundamentally compact

All these small PCBs save space, are high demand in the electronics market.

What is a Small PCB
Why Use a Small PCB

Why Use a Small PCB?

Customers typically use small-sized circuit boards for two reasons: first, they need to keep up with technological advancements. And second, investing in the technology is economical.

Small PCBs cannot be ignored. They make up parts of bigger electronic tools.

When the small parts break down, they are easier to replace than the whole equipment.

The small circuit boards are cheaper to replace too, as these items are mass-produced.

Due to their widespread availability across all countries, ordering them is not a difficult process.

What are Materials Used for Small Printed Circuit Boards?

The typical raw materials used in large-sized PCB are also used in small PCB. There are several options available from the following list:

  • Regular FR4 – fiberglass epoxy, impregnated with resin
  • FR1, FR2, and FR3 – with has a paper component to it (not very long-lasting)
  • CEM-1 or CEM-3 – cheaper alternatives to FR4
  • Advanced materials like Rogers for HDI PCB
  • Ceramic and PTFE materials – Rogers product line also has this covered
  • Customized PCBs are always possible with whatever material you opt if you are using an experienced well-sourced PCB manufacturer.
What are Materials Used for Small Printed Circuit Boards

Your Competent Manufacturer for Small PCBs

Your Competent Manufacturer for Small PCBs
Your Competent Manufacturer for Small PCB

As our responsibility to you, we conduct business professionally.

Please rest assured that we have robust quality control procedures for small PCBs.

Since our plant has a REACH certification, it is clear that we operate in a proper manner in our PCB facility.

Beyond corporate responsibility, we value our 500+ employees who toil diligently to complete your orders.

You can rely on them to take care of you.

To find out more, call us right away! You won’t be let down.

Small PCB Fabrication

Small PCB Applications

The Small PCB is unquestionably one of the best-selling items in any PCB fabrication facility, which is not surprising given its wide range of beneficial uses, including the following:

  • Medical equipment – endoscopy tools (for the smallest incisions), non-clinical equipment like medical administration and test kits, and digital thermometers are examples of medical equipment that requires the small sizes of PCB.
  • Transportation – these are inside vehicles like cars and planes
  • Industrial equipment
  • Advanced IT Solutions – Small-sized boards are advantageous for advanced applications like robotic surgery, robotic hazardous material handling, assistive technology, and connected IoT devices.
  • Household or consumer items – these are typically mass-produced.
Designing Small PCBs

Finally, we discuss some tips on minimizing the space for circuit boards.

Take a look at the following:

  • Actual footprint versus default ones – check with your PCB manufacturer regarding the exact specs of vias, they might be smaller than you think
  • Familiarize yourself with advanced PCB materials’ data sheets
  • Arrange board layers – maximize the height restriction by using high-layer count PCBs
  • Use Flex PCB – Polyimide material is heat resistant and can eliminate need for repetitive PCB layers
  • Know the right PCB connectors to use – opt out of the bulkier ones, or adjust their placement
small pcb banner 2
Durable Small PCB by PCBTok

Create the most advanced designs for circuits,

Using our manufacturing capabilities for this useful PCB.

Small PCB Production Details As Following Up

NO Item Technical Specification
Standard Advanced
1 Layer Count 1-20 layers 22-40 layer
2 Base Material KB、Shengyi、ShengyiSF305、FR408、FR408HR、IS410、FR406、GETEK、370HR、IT180A、Rogers4350、Rogers400、PTFE Laminates(Rogers series、Taconic series、Arlon series、Nelco series)、Rogers/Taconic/Arlon/Nelco laminate with FR-4 material(including partial Ro4350B hybrid laminating with FR-4)
3 PCB Type Rigid PCB/FPC/Flex-Rigid Backplane、HDI、High multi-layer blind&buried PCB、Embedded Capacitance、Embedded resistance board 、Heavy copper power PCB、Backdrill.
4 Lamination type Blind&buried via type Mechanical blind&burried vias with less than 3 times laminating Mechanical blind&burried vias with less than 2 times laminating
HDI PCB 1+n+1,1+1+n+1+1,2+n+2,3+n+3(n buried vias≤0.3mm),Laser blind via can be filling plating 1+n+1,1+1+n+1+1,2+n+2,3+n+3(n buried vias≤0.3mm),Laser blind via can be filling plating
5 Finished Board Thickness 0.2-3.2mm 3.4-7mm
6 Minimum Core Thickness 0.15mm(6mil) 0.1mm(4mil)
7 Copper Thickness Min. 1/2 OZ, Max. 4 OZ Min. 1/3 OZ, Max. 10 OZ
8 PTH Wall 20um(0.8mil) 25um(1mil)
9 Maximum Board Size 500*600mm(19”*23”) 1100*500mm(43”*19”)
10 Hole Min laser drilling size 4mil 4mil
Max laser drilling size 6mil 6mil
Max aspect ratio for Hole plate 10:1(hole diameter>8mil) 20:1
Max aspect ratio for laser via filling plating 0.9:1(Depth included copper thickness) 1:1(Depth included copper thickness)
Max aspect ratio for mechanical depth-
control drilling board(Blind hole drilling depth/blind hole size)
0.8:1(drilling tool size≥10mil) 1.3:1(drilling tool size≤8mil),1.15:1(drilling tool size≥10mil)
Min. depth of Mechanical depth-control(back drill) 8mil 8mil
Min gap between hole wall and
conductor (None blind and buried via PCB)
7mil(≤8L),9mil(10-14L),10mil(>14L) 5.5mil(≤8L),6.5mil(10-14L),7mil(>14L)
Min gap between hole wall conductor (Blind and buried via PCB) 8mil(1 times laminating),10mil(2 times laminating), 12mil(3 times laminating) 7mil(1 time laminating), 8mil(2 times laminating), 9mil(3 times laminating)
Min gab between hole wall conductor(Laser blind hole buried via PCB) 7mil(1+N+1);8mil(1+1+N+1+1 or 2+N+2) 7mil(1+N+1);8mil(1+1+N+1+1 or 2+N+2)
Min space between laser holes and conductor 6mil 5mil
Min space between hole walls in different net 10mil 10mil
Min space between hole walls in the same net 6mil(thru-hole& laser hole PCB),10mil(Mechanical blind&buried PCB) 6mil(thru-hole& laser hole PCB),10mil(Mechanical blind&buried PCB)
Min space bwteen NPTH hole walls 8mil 8mil
Hole location tolerance ±2mil ±2mil
NPTH tolerance ±2mil ±2mil
Pressfit holes tolerance ±2mil ±2mil
Countersink depth tolerance ±6mil ±6mil
Countersink hole size tolerance ±6mil ±6mil
11 Pad(ring) Min Pad size for laser drillings 10mil(for 4mil laser via),11mil(for 5mil laser via) 10mil(for 4mil laser via),11mil(for 5mil laser via)
Min Pad size for mechanical drillings 16mil(8mil drillings) 16mil(8mil drillings)
Min BGA pad size HASL:10mil, LF HASL:12mil, other surface technics are 10mil(7mil is ok for flash gold) HASL:10mil, LF HASL:12mil, other surface technics are 7mi
Pad size tolerance(BGA) ±1.5mil(pad size≤10mil);±15%(pad size>10mil) ±1.2mil(pad size≤12mil);±10%(pad size≥12mil)
12 Width/Space Internal Layer 1/2OZ:3/3mil 1/2OZ:3/3mil
1OZ: 3/4mil 1OZ: 3/4mil
2OZ: 4/5.5mil 2OZ: 4/5mil
3OZ: 5/8mil 3OZ: 5/8mil
4OZ: 6/11mil 4OZ: 6/11mil
5OZ: 7/14mil 5OZ: 7/13.5mil
6OZ: 8/16mil 6OZ: 8/15mil
7OZ: 9/19mil 7OZ: 9/18mil
8OZ: 10/22mil 8OZ: 10/21mil
9OZ: 11/25mil 9OZ: 11/24mil
10OZ: 12/28mil 10OZ: 12/27mil
External Layer 1/3OZ:3.5/4mil 1/3OZ:3/3mil
1/2OZ:3.9/4.5mil 1/2OZ:3.5/3.5mil
1OZ: 4.8/5mil 1OZ: 4.5/5mil
1.43OZ(positive):4.5/7 1.43OZ(positive):4.5/6
1.43OZ(negative ):5/8 1.43OZ(negative ):5/7
2OZ: 6/8mil 2OZ: 6/7mil
3OZ: 6/12mil 3OZ: 6/10mil
4OZ: 7.5/15mil 4OZ: 7.5/13mil
5OZ: 9/18mil 5OZ: 9/16mil
6OZ: 10/21mil 6OZ: 10/19mil
7OZ: 11/25mil 7OZ: 11/22mil
8OZ: 12/29mil 8OZ: 12/26mil
9OZ: 13/33mil 9OZ: 13/30mil
10OZ: 14/38mil 10OZ: 14/35mil
13 Dimension Tolerance Hole Position 0.08 ( 3 mils)
Conductor Width(W) 20% Deviation of Master
1mil Deviation of Master
Outline Dimension 0.15 mm ( 6 mils) 0.10 mm ( 4 mils)
Conductors & Outline
( C – O )
0.15 mm ( 6 mils) 0.13 mm ( 5 mils)
Warp and Twist 0.75% 0.50%
14 Solder Mask Max drilling tool size for via filled with Soldermask (single side) 35.4mil 35.4mil
Soldermask color Green, Black, Blue, Red, White, Yellow,Purple matte/glossy
Silkscreen color White, Black,Blue,Yellow
Max hole size for via filled with Blue glue aluminium 197mil 197mil
Finish hole size for via filled with resin  4-25.4mil  4-25.4mil
Max aspect ratio for via filled with resin board 8:1 12:1
Min width of soldermask bridge Base copper≤0.5 oz、Immersion Tin: 7.5mil(Black), 5.5mil(Other color) , 8mil( on copper area)
Base copper≤0.5 oz、Finish treatment not Immersion Tin : 5.5 mil(Black,extremity 5mil), 4mil(Other
color,extremity 3.5mil) , 8mil( on copper area
Base coppe 1 oz: 4mil(Green), 5mil(Other color) , 5.5mil(Black,extremity 5mil),8mil( on copper area)
Base copper 1.43 oz: 4mil(Green), 5.5mil(Other color) , 6mil(Black), 8mil( on copper area)
Base copper 2 oz-4 oz: 6mil, 8mil( on copper area)
15 Surface Treatment Lead free Flash gold(electroplated gold)、ENIG、Hard gold、Flash gold、HASL Lead free、OSP、ENEPIG、Soft gold、Immersion silver、Immersion Tin、ENIG+OSP,ENIG+Gold finger,Flash gold(electroplated gold)+Gold finger,Immersion silver+Gold finger,Immersion Tin+Gold finge
Leaded Leaded HASL
Aspect ratio 10:1(HASL Lead free、HASL Lead、ENIG、Immersion Tin、Immersion silver、ENEPIG);8:1(OSP)
Max finished size HASL Lead 22″*39″;HASL Lead free 22″*24″;Flash gold 24″*24″;Hard gold 24″*28″;ENIG 21″*27″;Flash gold(electroplated gold) 21″*48″;Immersion Tin 16″*21″;Immersion silver 16″*18″;OSP 24″*40″;
Min finished size HASL Lead 5″*6″;HASL Lead free 10″*10″;Flash gold 12″*16″;Hard gold 3″*3″;Flash gold(electroplated gold) 8″*10″;Immersion Tin 2″*4″;Immersion silver 2″*4″;OSP 2″*2″;
PCB thickness HASL Lead 0.6-4.0mm;HASL Lead free 0.6-4.0mm;Flash gold 1.0-3.2mm;Hard gold 0.1-5.0mm;ENIG 0.2-7.0mm;Flash gold(electroplated gold) 0.15-5.0mm;Immersion Tin 0.4-5.0mm;Immersion silver 0.4-5.0mm;OSP 0.2-6.0mm
Max high to gold finger 1.5inch
Min space between gold fingers 6mil
Min block space to gold fingers 7.5mil
16 V-Cutting Panel Size 500mm X 622 mm  ( max. ) 500mm X 800 mm ( max. )
Board Thickness 0.50 mm (20mil) min. 0.30 mm (12mil) min.
Remain Thickness 1/3 board thickness 0.40 +/-0.10mm( 16+/-4 mil )
Tolerance ±0.13 mm(5mil) ±0.1 mm(4mil)
Groove Width 0.50 mm (20mil) max. 0.38 mm (15mil) max.
Groove to Groove 20 mm (787mil) min. 10 mm (394mil) min.
Groove to Trace 0.45 mm(18mil) min. 0.38 mm(15mil) min.
17 Slot Slot size tol.L≥2W PTH Slot: L:+/-0.13(5mil) W:+/-0.08(3mil) PTH Slot: L:+/-0.10(4mil) W:+/-0.05(2mil)
NPTH slot(mm) L+/-0.10 (4mil) W:+/-0.05(2mil) NPTH slot(mm) L:+/-0.08 (3mil) W:+/-0.05(2mil)
18 Min Spacing from hole edge to hole edge 0.30-1.60 (Hole Diameter) 0.15mm(6mil) 0.10mm(4mil)
1.61-6.50 (Hole Diameter) 0.15mm(6mil) 0.13mm(5mil)
19 Min spacing between hole edge to circuitry pattern PTH hole: 0.20mm(8mil) PTH hole: 0.13mm(5mil)
NPTH hole: 0.18mm(7mil) NPTH hole: 0.10mm(4mil)
20 Image transfer Registration tol Circuit pattern vs.index hole 0.10(4mil) 0.08(3mil)
Circuit pattern vs.2nd drill hole 0.15(6mil) 0.10(4mil)
21 Registration tolerance of front/back image 0.075mm(3mil) 0.05mm(2mil)
22 Multilayers Layer-layer misregistration 4layers: 0.15mm(6mil)max. 4layers: 0.10mm(4mil) max.
6layers: 0.20mm(8mil)max. 6layers: 0.13mm(5mil) max.
8layers: 0.25mm(10mil)max. 8layers: 0.15mm(6mil) max.
Min. Spacing from Hole Edge to Innerlayer Pattern 0.225mm(9mil) 0.15mm(6mil)
Min.Spacing from Outline to Innerlayer Pattern 0.38mm(15mil) 0.225mm(9mil)
Min. board thickness 4layers:0.30mm(12mil) 4layers:0.20mm(8mil)
6layers:0.60mm(24mil) 6layers:0.50mm(20mil)
8layers:1.0mm(40mil) 8layers:0.75mm(30mil)
Board thickness tolerance 4layers:+/-0.13mm(5mil) 4layers:+/-0.10mm(4mil)
6layers:+/-0.15mm(6mil) 6layers:+/-0.13mm(5mil)
8-12 layers:+/-0.20mm (8mil) 8-12 layers:+/-0.15mm (6mil)
23 Insulation Resistance 10KΩ~20MΩ(typical:5MΩ)
24 Conductivity <50Ω(typical:25Ω)
25 Test voltage 250V
26 Impedance control ±5ohm(<50ohm), ±10%(≥50ohm)

PCBTok offers flexible shipping methods for our customers, you may choose from one of the methods below.

1. DHL

DHL offers international express services in over 220 countries.
DHL partners with PCBTok and offers very competitive rates to customers of PCBTok.
It normally takes 3-7 business days for the package to be delivered around the world.


2. UPS

UPS gets the facts and figures about the world’s largest package delivery company and one of the leading global providers of specialized transportation and logistics services.
It normally takes 3-7 business days to deliver a package to most of the addresses in the world.


3. TNT

TNT has 56,000 employees in 61 countries.
It takes 4-9 business days to deliver the packages to the hands
of our customers.


4. FedEx

FedEx offers delivery solutions for customers around the world.
It takes 4-7 business days to deliver the packages to the hands
of our customers.


5. Air, Sea/Air, and Sea

If your order is of large volume with PCBTok, you can also choose
to ship via air, sea/air combined, and sea when necessary.
Please contact your sales representative for shipping solutions.

Note: if you need others, please contact your sales representative for shipping solutions.

You can use the following payment methods:

Telegraphic Transfer(TT): A telegraphic transfer (TT) is an electronic method of transferring funds utilized primarily for overseas wire transactions. It’s very convenient to transfer.

Bank/Wire transfer: To pay by wire transfer using your bank account, you need to visit your nearest bank branch with the wire transfer information. Your payment will be completed 3-5 business days after you have finished the money transfer.

Paypal: Pay easily, fast and secure with PayPal. many other credit and debit cards via PayPal.

Credit Card: You can pay with a credit card: Visa, Visa Electron, MasterCard, Maestro.

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  • “I love this PCBTok. It was great that they were able to get us a good deal on the Small PCBs we needed. They seemed sincere in their desire to assist us in any way they could. I have and will keep recommending them to my business associates. They possess the energy to move quickly and are intelligent. I’m confident they are the PCB provider I’m looking for because they gave me a fair quotation.”

    Heinz Sandlin, PCB Engineer from Aberdeenshire, Sctoland
  • “It’s difficult to find a reliable PCB supplier, but we’ve been extremely fortunate with PCBTok. They were recommended to me by a friend, and we requested quotes from them several times for different projects. Even though we decided not to proceed at the time, we had a good feeling about this business and knew they would be our choice when it came time to start prototyping. We were correct. I can’t imagine using someone else to carry out our orders.”

    Markus Dulude, Senior Hardware Engineer from Sarthe, France
  • “A few months ago, I began a PCB project with another PCB supplier. It became clear about halfway through that the company I used lacked experience. The process became more obvious as it went along. My friends advised me to switch to PCBTok because they are the best and most affordable choice, so I did. They evaluated the damage and the necessary steps to finish the job. they then gave me a reasonable estimate. Now that the project is completely finished, I am happy.”

    Alexander de Rosier, Procurement Specialist from Auckland, New Zealand
What is a Panelized Small PCB?

More likely, if you are ordering a small PCB, it is also a panelized PCB.

Panelization, V-Cutting, Tab-Routing and V-Scoring are similar terms.

These are methods used in the production of PCB where the boards are arranged together in a simple sheet.

They are separated with tabs that can be easily broken using a V-cutting or V-scoring PCB cutting machine.

Pooling together boards like this cuts costs big time.

Then, the individual small PCBs can be packaged for end-users’ convenience.

How Small is a Small PCB?

The smallest size of PCB can be 5mm by 3mm.

There are, of course exceptions where 4mm size can be achieved.

But this necessitates very special equipment and higher cost.

It is more probable to find possible to find 5mm sized ones to accommodate almost microscopic-sized ICs.

Most of these competent manufacturers are in Shenzhen, China.

In the manufacture of these boards, PCB stack-up, surface finish and via drilling must be in perfect accordance for the perfect fit.

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