SMD vs COB Module Quote Lines for a Fixed Indoor EA640F2 Wall

Quick answer

For a fixed indoor EA640F2 wall, the quotation should keep the 640×480 mm cabinet line common and list SMD and flip-chip COB as separate module-option lines. Each option line should name the exact module family, pitch, brightness, service route, spare modules, removal tooling and power scope. Compare the accepted configuration behind each total rather than a headline cabinet rate.

Sources used: EA640F2 specs; EA600COB3 specs

Start with the cabinet line, then separate SMD and COB

An EA640F2 fixed indoor wall uses a 640×480 mm cabinet that is 60 mm deep and weighs 7.5 kg, with six 320×160 mm modules per cabinet. The same cabinet is offered in SMD and flip-chip COB configurations, so the quotation should keep the cabinet identity common and make the module option a separate line. A cabinet-format quotation should not stop at the cabinet line; it must also state which module family and pitch is being accepted. That separation lets a buyer compare two offers without guessing whether the price difference comes from the cabinet, the module technology or the accepted system around them.

The documented option split is clear. SMD covers P1.25 to P4 with SMD1010-SMD2020 lamps at 600-800 cd/m2. Flip-chip COB runs P1.25-P1.86 at 600 cd/m2. Both are specified at 3,840 Hz refresh and 14-bit grey scale, and the cabinet is rated IP31 with a 140-degree viewing angle. Those shared figures do not make the two module options interchangeable in the quote, because the pitch range and brightness differ. A single line that says SMD or COB leaves the accepted module, brightness and spare-part match unresolved.

Match the pitch and viewing task to the option line

Pitch follows the closest viewing distance. The EA640F2 source suggests P1.25 to P1.86 for close viewing in meeting rooms, and P2 to P4 where viewers sit further back. SMD options run from P1.25 to P4 and are the usual choice for standard indoor viewing distances; flip-chip COB is available at P1.25, P1.53 and P1.86, and is offered at P1.25 to P1.86. If the required pitch is P2, P2.5, P3 or P4, only the SMD line is documented in the supplied material. The quotation should therefore state the pitch and the module family together, not a pitch range that implies both are available everywhere.

The surface also matters. The source says flip-chip COB gives a sealed, more robust surface that resists contact and cleaning, which suits high-traffic areas. The COB vs SMD decision should follow the viewing task and the likelihood of contact, not a headline cabinet rate. Brightness should be quoted per option: SMD is documented at 600-800 cd/m2, while COB is documented at 600 cd/m2. A quote that lists a single brightness figure for both module families has not separated the options. It also leaves the power and spare lines without a clear accepted basis.

EA640F2 quotation lines for SMD and COB module options

Service, spares and tooling need their own lines

The EA640F2 is front-service. Magnetic modules, power supplies and receiving cards are removed from the front, so a wall-mounted cabinet needs no rear maintenance corridor. The source also states that magnetic modules can be removed individually with a vacuum tool, and that one failed module is swapped from the front instead of replacing a whole cabinet. The quotation should repeat that service route for the exact SMD or COB option, because the module surface and module type differ even though the cabinet footprint is shared. If the room has no rear access, the service line becomes a primary acceptance condition rather than a maintenance detail.

Spares are a commercial line, not an afterthought. The source says project pricing depends on pixel pitch, cabinet quantity, control equipment, spare parts and delivery. Ask for spare modules to be listed by module family, exact pitch and cabinet footprint, and state whether they are included or priced separately. Removal tooling should also be named; a vacuum tool is documented for magnetic module removal. A spare line that names only the cabinet does not tell you which SMD or COB module will be supplied when a replacement is needed.

Power and control scope can change with the module option

The EA640F2 power figures differ by module family. Cabinets run on AC 100-240 V, 50-60 Hz. Average consumption is 100-110 W/m2 for SMD and 80-100 W/m2 for COB; maximum consumption is 300-330 W/m2 for SMD and 230-300 W/m2 for COB. The source advises sizing the electrical supply and cabling on the maximum figure rather than the average. The quote should state which figure applies to the selected option, because a module-family change can change the accepted power scope.

Control and wiring are also part of the accepted system. The cabinet has an integrated adapter board that carries power and data inside the cabinet, cutting inter-module cabling, and it uses quick locks that align and join cabinets during assembly. Project pricing includes control equipment. Ask for the controller and power-distribution scope to appear beside the module option, so a lower module line does not hide a different control or power scope. That is our purchasing advice, not a manufacturer requirement, and it keeps the comparison on the accepted system.

Compare accepted-system scope, not a headline cabinet rate

The EA640F2 is quoted per project because pixel pitch, cabinet quantity, control equipment, spare parts and delivery all affect the total. That means the useful comparison is not a cabinet rate or a blended square-metre number; it is the accepted configuration behind each total. A quotation should show the cabinet, module family, pitch, brightness, service route, spare modules, removal tooling, control scope and freight as separate lines. If one of those lines is blank, treat it as unresolved rather than included.

Use a line-by-line method to compare LED screen quotes while keeping the module option visible. If one proposal includes COB and another includes SMD at the same pitch, the totals are not comparable until the module family, brightness, power figure and spare package are named. A quote that gives only a cabinet count and a project total cannot show which module option is being accepted or what changes if the buyer switches between SMD and COB.

For budget planning, the indoor LED screen price method is to scope the wall before asking for a total. The quote should identify the accepted SMD or COB configuration and the conditions that apply to the named model, rather than leaving the buyer to infer them from a cabinet rate. This is not a published unit price; it is a way to compare the inclusions that make each project total different.

When to defer the SMD or COB comparison

Defer comparison when the quotation names only the cabinet and not the module option. The EA640F2 source documents SMD and COB as options within the same cabinet, but it does not make every pitch available in both families. If a proposal blends SMD and COB lines, or does not state the exact pitch, brightness, service method, spare modules and tooling, the accepted system is unresolved. Do not compare totals until those lines are named.

A conditional decision rule is useful. Choose the SMD line when the required pitch runs to P4 or the viewing distance is standard for indoor rooms. Choose the COB line when the viewing distance is close and the documented sealed surface and contact resistance are relevant to the room. Defer either choice when the quote cannot show the module family, pitch, brightness, spare and power scope on separate lines. That keeps the decision tied to the documented option rather than to a product headline.

One documented trade-off is cost: COB modules are generally more expensive than equivalent SMD modules. That does not tell you which option fits, because the viewing distance, surface conditions and required pitch still drive the choice. It means the quote should make the module option and its inclusions visible before the totals are compared, so a lower SMD line and a higher COB line are judged on the same accepted-system basis.

Fixed indoor scenarios and the module option to confirm

Buyer checklist

• Request separate SMD and COB option lines inside the same EA640F2 640×480 mm cabinet, with the exact module family and pitch named.
• Match brightness to the option: SMD 600-800 cd/m2 or COB 600 cd/m2, and keep the figure on the module line.
• State the service route, front access, vacuum tool and spare module match for the accepted SMD or COB option.
• Quote power per option using the SMD or COB average and maximum figures, and ask what the supply and cabling are sized on.
• Put cabinet, module option, control, spares, tooling and freight on separate lines so the accepted-system scope is visible.

Frequently asked questions

Can one EA640F2 quotation list both SMD and COB options?

Yes. The same EA640F2 cabinet is offered in SMD and COB configurations, but the quotation should list them as separate module-option lines. Name the exact module family, pitch, brightness, service method, spare modules, tooling and power scope for each line before comparing totals.

Is COB available at every EA640F2 pitch?

No. The supplied source documents SMD from P1.25 to P4 and flip-chip COB at P1.25, P1.53 and P1.86. If the required pitch is P2 to P4, only the SMD line is documented. Confirm the exact pitch and module family together.

How should spare modules be separated in the quote?

Spare modules should be listed by module family, exact pitch and cabinet footprint, with the inclusion or separate price stated. The EA640F2 source says project pricing depends on spare parts, so a spare line that names only the cabinet is not enough to compare accepted scope.

Do SMD and COB use the same power figures in an EA640F2 quote?

No. The source lists average consumption of 100-110 W/m2 for SMD and 80-100 W/m2 for COB, with maximum consumption of 300-330 W/m2 for SMD and 230-300 W/m2 for COB. The quote should state the figure that applies to the selected option.

What should I do if the quote blends SMD and COB into one cabinet rate?

Treat the accepted system as unresolved. Ask for the exact module family, pitch, brightness, service route, spare modules and power scope on separate lines, because the EA640F2 source offers both options within one cabinet but does not make them interchangeable in the quotation.

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