The SANAN 3570 LED chip is commonly used in aftermarket automotive lighting, including Bi-LED projector systems.

Because of this, buyers often see product descriptions such as:

• SANAN 3570
• 6-core SANAN LED
• high-power SANAN chip
• upgraded 3570 LED

These specifications can be useful.

But they do not tell you everything about the projector.

A Bi-LED projector is a complete optical, electrical and thermal system.

The LED chip is only one part of it.

A projector using a good LED chip can still perform poorly if the optical design, driver or cooling system is weak.

For B2B buyers, the better question is not:

“Does it use SANAN 3570?”

It is:

“How is the LED chip integrated into the complete projector system?”

What Does “3570” Mean?

In LED product descriptions, numbers such as 3570 normally refer to the physical package format.

The name helps identify the general LED package size or family.

But “3570” alone does not tell you:

• exact luminous flux
• drive current
• efficiency
• color temperature
• thermal resistance
• bin
• final projector performance

Two LED packages described as “3570” can still perform differently depending on specification and operating conditions.

Who Is SANAN?

SANAN is a major Chinese semiconductor and LED manufacturer.

SANAN LED products are used across different lighting applications, including automotive aftermarket products.

For a Bi-LED projector buyer, the brand name can provide useful information about the light source being used.

However, the brand alone should not be treated as a complete quality grade for the projector.

Why Is the SANAN 3570 Popular in Bi-LED Projectors?

The 3570 format is widely used because it can support compact, relatively high-output LED arrangements.

Depending on the projector design, manufacturers may use:

• single LED packages
• multiple 3570 packages
• multi-core arrangements
• different chip layouts for low and high beam

This makes the format flexible for compact projector designs.

But the final beam still depends on how the light source is positioned relative to the optics.

What Does “6-Core SANAN” Mean?

In aftermarket product descriptions, “6-core” usually refers to a multi-emitter or multi-chip arrangement.

However, this terminology is not always standardized.

Different suppliers may use “6-core” to describe different internal layouts.

So buyers should not compare products only by statements such as:

4-core vs 6-core vs 8-core

Instead, ask for:

• LED package specification
• electrical power
• current
• voltage
• thermal design
• actual beam test
• stabilized output

More LED cores do not automatically mean a better projector.

Does SANAN 3570 Determine Projector Brightness?

No.

The LED chip contributes to total light generation, but projector brightness depends on the full system.

Important factors include:

• LED output
• drive current
• optical efficiency
• reflector geometry
• LED position
• lens
• thermal management

For example, two projectors can use the same SANAN 3570 chip but produce very different lux readings.

One may drive the LED harder.

Another may have a more efficient optical system.

A third may lose more output after thermal stabilization.

This is why brightness should be measured at the projector level, not assumed from the LED chip name.

For practical testing, see our guide to how to measure Bi-LED projector brightness correctly.

Does the LED Chip Determine Beam Pattern?

No.

Beam pattern is mainly created by the interaction between:

• LED source position
• reflector or primary optics
• cutoff shield
• projector lens
• mechanical alignment

The LED source matters because its emitting area and position affect how the optical system receives the light.

But simply replacing one LED chip with a “better” chip does not automatically create a better beam.

A poorly matched light source can even reduce optical performance.

For a full beam-quality checklist, see our guide to what makes a good Bi-LED projector beam pattern.

LED Source Position Is Critical

Projector optics are sensitive to the position of the light source.

Small changes in LED placement can affect:

• hotspot
• cutoff
• focus
• width
• stray light

This means assembly consistency matters.

For B2B buyers, a projector with a well-known LED chip can still show inconsistent beam patterns if LED placement varies between units.

Driver Current Matters

An LED does not operate independently.

The driver controls the electrical current supplied to the LED.

Higher current can increase output, but it also increases thermal load.

This creates an important trade-off between:

• brightness
• efficiency
• heat
• long-term stability

A projector using SANAN 3570 at one current level may behave differently from another projector using the same LED at a higher current.

Therefore, the chip model alone does not tell you how aggressively the projector is being driven.

Thermal Management Matters Just as Much

LED performance changes with temperature.

If heat is not removed effectively:

• output may decline
• driver protection may reduce current
• component stress can increase

This is why the heat sink, thermal interface and cooling fan matter.

A good LED source cannot compensate for weak thermal design.

For more detail, see our guide to Bi-LED projector thermal management.

Does SANAN 3570 Guarantee Long Life?

No.

Projector reliability depends on more than the LED chip.

Other components include:

• driver
• solder joints
• thermal interface
• cooling fan
• wiring
• solenoid
• connectors

Even a reliable LED package cannot guarantee the life of the complete projector.

For B2B sourcing, actual product consistency and failure data are more useful than a generic lifetime claim.

Does SANAN 3570 Mean Better Efficiency?

Not automatically.

Efficiency depends on the exact LED specification and operating point.

The same LED package can have different efficiency depending on:

• current
• temperature
• voltage
• bin
• thermal conditions

The complete projector also loses some light through the optical system.

So projector efficiency cannot be determined from chip brand alone.

SANAN vs Other LED Chips

A useful comparison should not ask only:

“Which chip brand is best?”

Instead, compare the complete projector.

Important factors include:

Factor	Why It Matters
LED specification	Defines light-source characteristics
Driver	Controls current and stability
Optical system	Determines beam distribution
Thermal design	Affects stabilized output
Assembly tolerance	Affects beam consistency
Sample consistency	Important for bulk purchasing

A projector using a different LED brand can outperform a SANAN-based projector if the complete system is better designed.

The reverse can also be true.

Why Chip Branding Is So Common in Aftermarket Lighting

Chip names are easy to market.

Buyers can quickly compare:

• SANAN
• Osram
• Lumileds
• Cree
• CSP
• flip-chip

But this can create the false impression that the chip determines the entire product.

For projector systems, the chip should be treated as one specification among many.

This is similar to comparing cameras only by image sensor brand while ignoring the lens, electronics and software.

What Should B2B Buyers Ask About the LED Chip?

If a supplier advertises SANAN 3570, ask:

• Which exact package is used?
• How many LED packages or emitters?
• What is the drive current?
• What is the actual projector power?
• What is the color temperature?
• Is the LED specification stable between batches?
• Does the supplier substitute LED packages without notice?

The last question is especially important for repeat orders.

Check Whether the LED Source Changes Between Batches

For distributors, consistency matters.

A projector may keep the same:

• model number
• housing
• packaging

while internal components change.

Possible changes include:

• LED chip
• driver
• fan
• thermal material

If the LED source changes, the projector may also change in:

• brightness
• color
• beam
• thermal behavior

For repeat purchasing, critical component changes should be confirmed with the supplier.

How Should You Evaluate a SANAN 3570 Projector Sample?

Do not approve the product from the chip specification alone.

Evaluate:

1. Beam Pattern

Check:

• cutoff
• hotspot
• width
• foreground
• high beam

2. Brightness

Use controlled lux measurements.

3. Warm Output

Compare cold and stabilized output.

4. Thermal Behavior

Check:

• fan
• heat sink
• driver stability

5. Multiple Samples

Compare more than one unit where practical.

6. Mechanical Dimensions

Check mounting and lens position.

This gives a much more useful picture than the LED chip name alone.

What Does a Good Bi-LED Projector Specification Look Like?

Instead of:

SANAN 3570
6-core
60W
20,000 lm

a more useful B2B specification would include:

• LED source
• input voltage
• measured power
• low-beam test data
• high-beam test data
• test distance
• LHD/RHD version
• thermal behavior
• dimensions
• mounting
• driver
• cooling system

This helps buyers compare products under real conditions.

Is SANAN 3570 a Good Choice for Bi-LED Projectors?

It can be.

SANAN LED packages are widely used in aftermarket automotive lighting, and the 3570 format can work well in Bi-LED projector designs.

But the LED chip should not be evaluated separately from the projector.

The better question is:

Has the projector been designed well around that LED source?

That requires looking at:

• optical design
• driver
• thermal system
• assembly
• testing

Frequently Asked Questions

What is a SANAN 3570 LED chip?

It is an LED package commonly used in high-output lighting applications, including some automotive Bi-LED projectors.

Does 3570 mean the LED produces a specific number of lumens?

No. The number mainly identifies the package format or family, not a guaranteed lumen output.

Is a 6-core LED better than a 4-core LED?

Not automatically. Performance depends on the complete electrical, optical and thermal design.

Does SANAN 3570 create a better beam pattern?

Not by itself. Beam pattern depends primarily on the complete optical system and LED positioning.

Does SANAN 3570 guarantee longer projector life?

No. The driver, cooling system and other components also affect reliability.

Can two projectors using the same SANAN chip have different brightness?

Yes. Driver current, optics and thermal design can create major differences.

Should B2B buyers ask which LED chip is used?

Yes, but the chip should be treated as one part of the product specification.

Is the LED chip more important than the projector optics?

Both matter, but for real road beam performance the optical system is critical.

The LED Chip Is Important, but It Is Not the Whole Projector

SANAN 3570 can be a useful specification when comparing Bi-LED projectors.

But it should not be used as a shortcut for product quality.

A complete projector depends on:

• LED source
• driver
• optics
• thermal management
• assembly consistency
• mechanical design

For B2B buyers, the best approach is to evaluate the projector as a complete system and verify whether performance remains consistent between samples and production batches.

Royalin works with automotive lighting suppliers in China to support overseas retrofit shops and distributors with Bi-LED projectors, brackets and vehicle-specific retrofit components, with an emphasis on practical specifications, product comparison and supply consistency.