In the early days, the most famous and highly regarded LED chip for headlights and fog lights was the Philips ZES chip.
⭕: Precise focal length, distinct cut-off line.
❌: Expensive, moderate brightness.
These chips are well-known for their precise focal length and distinct cut-off line, but they are relatively expensive and offer moderate brightness.
COB Chips (CHIP ON BOARD):
COB Chips (CHIP ON BOARD):
Later, in an effort to reduce costs, LED headlights with COB chips became more prevalent.
❌: Low brightness, short lifespan, and most importantly, a significant issue with imprecise focal length, leading to severe glare problems!
COB chips are cost-effective but have lower brightness, shorter lifespan, and suffer from significant glare issues due to imprecise focal length.
These chips are characterized by a round sphere that covers the LED, resulting in even illumination and high brightness.
⭕: High brightness, even illumination.
❌: Inaccurate focal length, high cost
Similar to CREE chips, these LEDs have a round sphere covering the chip, resulting in high brightness and even illumination. However, their focal length cannot be accurately controlled, and they come with a higher price tag.
In recent years, LED technology has become
more mature, leading to the development of the current mainstream CSP chips.
There are various grades available, ranging from 1860 to 7545, with higher
numbers indicating higher quality.
focal length, high durability, and excellent light efficiency.
: While CSP
chips can handle higher power, there may be concerns about potential
malfunctions if heat dissipation is not sufficient.
Not only can they surpass the brightness of high-power HID lights, but they can also achieve high durability when paired with better heat dissipation and thermal management. Only with effective heat dissipation and thermal management can LED headlights demonstrate exceptional durability.
First, the lowest-tier chip: 3014, with a side length of 3.0mm x 1.4mm.
⭕: Cheap, so cheap that it makes you doubt…
❌: Low brightness, short lifespan, poor heat dissipation—basically, it has all the drawbacks you can think of.
3014 was upgraded to 4014, with a side length of 4.0mm x 1.4mm. Both brightness and durability have been improved, but PA still lacks confidence in its actual use.
⭕: 2 times brighter than 3014, and durability has also improved.
❌: Not heat-resistant. Although heat dissipation has improved, it is not recommended to use too many chips in accumulation.
The 5050 chip is a long-lasting and widely-used chip, with a side length of 5.0mm x 5.0mm. It has been in the market for over 10 years, and its prevalence is no surprise.
⭕: The technology is mature, and 5050 chips produced by high-quality manufacturers exhibit high stability.
❌: The technology is not advanced, and there are often low-quality products on the market, resulting in significant variations in performance.
High brightness and are often used in headlight applications.
With a side length of 2.5mm x 2.8mm, the 3528 chip relies on its own chip for heat dissipation and is, therefore, unsuitable for high-power applications. However, it offers high stability and is a suitable choice for positions where high brightness is not required, such as dashboard lights.
: High stability.
: Low brightness, low heat dissipation efficiency.
The 2835 chip is very similar to the 3528, but the difference lies in the packaging process technology. Additionally, the 2835 chip is thinner and adopts a through-hole heat sink, resulting in even higher stability. Moreover, its brightness and power capacity are more than double that of the 3528 chip, making it widely used in various
: High brightness, high stability, can handle higher power.
: It requires more sophisticated technology, testing the circuit design.
Widely used in automotive lighting due to their versatility.
It has a similar appearance to CREE
chips and offers the same multi-angle emission effect. Each chip has a
brightness of up to 140LM and a power of 3W, resulting in an overall excellent
: High stability, uniform emission angle, and high brightness.
: The unit cost is high.
What to Consider When Buying LED Products?
When purchasing LED products, it is
essential to pay special attention to the intended application and usage.
Consider whether the product will be continuously illuminated for extended
periods and whether high brightness is necessary.
Selecting the appropriate product and LED chip based on your specific requirements will ensure optimal performance and cost-effectiveness, allowing you to achieve the best results while saving money.
P21W, PY21W, P21/5W, are all commonly used car light bulb base, do you often confuse these? This article will help you to solve the confusion, so that you won’t buy the wrong specification, only to find that you can’t use it at home!