In terms of the number of vehicles, each vehicle requires 100 (internal) and 200 (external). Internal applications such as instrument panels, reading lights, and external applications are taillights, brake lights, directional lights, headlights, etc. At present, almost all car manufacturers using LEDs in the whole car are European companies. In terms of LEDs for external lighting, the ratio of the third brake lamps to LEDs in European and Japanese cars has exceeded 80%.
The biggest problem in the automotive field is the application of LEDs to automotive headlights. For example, in the Japanese market, LEDs cannot be used in headlights due to legal restrictions. However, such restrictions will begin to turn around in 2007. Since 2007, LEDs can be applied to concept cars. Since 2008, LEDs can be expanded to be used as headlights, and should be allowed after 2010. Start official use. From the perspective of component performance, current white LEDs can replace halogen lamps. The biggest challenge is how to replace HID. However, with the development of technology, it is believed that by 2010, LED will have the opportunity to compete with HID in terms of brightness and cost.
Basically, there are many advantages to using LEDs in automotive headlights. First, the service life, although it has some relationship with the peak attenuation period of the aforementioned LEDs, the headlights of automobiles are not ordinary lighting, so they are different from general lighting purposes; Next is the flexibility of the design, the depth in the headlight will be thinner, the front can be used for overall illumination, the flexibility of the design is increased, and because the LED is a relatively directional light source, the design can be simplified as illumination. And lighter, in addition, through the combination of visible optical communication technology, it is very likely to become an information communication component for safe driving.
In addition to headlights, the use of LEDs in automobiles has gradually increased, such as exterior lighting such as taillights, directional lights and fog lights, as well as interior lights, foot lights, instrument panel lights, liquid crystal backlights for navigation devices, and others. The operation panel of the automatic equipment can be said to be quite a lot of applications. Of course, there are brightness requirements in various application fields, and there are also requirements for color rendering. On the other hand, as long as the cost is low, the requirements are different. This can be roughly distinguished from each other. For example, the requirements for general exterior lights are mainly luminance, and the interior of vehicles is mainly color rendering. Specifically, the headlights require the light to reach the distance, there is no clear requirement for color reproduction, and the interior lights will have high requirements for color rendering because the rider hates the blue light and the like. If the LEDs applied to the dashboard are not related to color rendering, they will be required for low brightness and low cost.
At present, the largest market in the automotive industry is backlighting the interior of the car, followed by the rear light. In 2006, the global automotive interior market sales were 420 million US dollars, and the rear lamp market was 220 million US dollars. Market LED sales will reach $1.15 billion.
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1
= 25°C unless otherwise specified Symbol Pd VF RqJA Tj, TSTG Value to +175 Unit mW V K/W °C
Characteristic Forward Voltage = 200mA Thermal Resistance, Junction to Ambient Air (Note 2) Operating and Storage Temperature Range Notes:
1. Tested with Pulses, 20ms. 2. Valid provided that Electrodes are kept at Ambient Temperature.
1. Tested with pulses = 20 ms. 2. Valid provided that electrodes are kept at ambient temperature.
VZ, ZENER VOLTAGE (V) Fig. 1, Zener Current vs Zener Voltage
25 20 VZ, ZENER VOLTAGE (V) Fig. 8, Zener Current vs Zener Voltage
TA, AMBIENT TEMPERATURE (°C) Fig. 3, Power Dissipation vs Ambient Temperature
15 20 VZ, ZENER VOLTAGE (V) Fig. 4, Differential Zener Impedance
VZ, ZENER VOLTAGE (V) Fig. 5, Junction Capacitance vs Zener Voltage
The biggest problem in the automotive field is the application of LEDs to automotive headlights. For example, in the Japanese market, LEDs cannot be used in headlights due to legal restrictions. However, such restrictions will begin to turn around in 2007. Since 2007, LEDs can be applied to concept cars. Since 2008, LEDs can be expanded to be used as headlights, and should be allowed after 2010. Start official use. From the perspective of component performance, current white LEDs can replace halogen lamps. The biggest challenge is how to replace HID. However, with the development of technology, it is believed that by 2010, LED will have the opportunity to compete with HID in terms of brightness and cost.
Basically, there are many advantages to using LEDs in automotive headlights. First, the service life, although it has some relationship with the peak attenuation period of the aforementioned LEDs, the headlights of automobiles are not ordinary lighting, so they are different from general lighting purposes; Next is the flexibility of the design, the depth in the headlight will be thinner, the front can be used for overall illumination, the flexibility of the design is increased, and because the LED is a relatively directional light source, the design can be simplified as illumination. And lighter, in addition, through the combination of visible optical communication technology, it is very likely to become an information communication component for safe driving.
In addition to headlights, the use of LEDs in automobiles has gradually increased, such as exterior lighting such as taillights, directional lights and fog lights, as well as interior lights, foot lights, instrument panel lights, liquid crystal backlights for navigation devices, and others. The operation panel of the automatic equipment can be said to be quite a lot of applications. Of course, there are brightness requirements in various application fields, and there are also requirements for color rendering. On the other hand, as long as the cost is low, the requirements are different. This can be roughly distinguished from each other. For example, the requirements for general exterior lights are mainly luminance, and the interior of vehicles is mainly color rendering. Specifically, the headlights require the light to reach the distance, there is no clear requirement for color reproduction, and the interior lights will have high requirements for color rendering because the rider hates the blue light and the like. If the LEDs applied to the dashboard are not related to color rendering, they will be required for low brightness and low cost.
At present, the largest market in the automotive industry is backlighting the interior of the car, followed by the rear light. In 2006, the global automotive interior market sales were 420 million US dollars, and the rear lamp market was 220 million US dollars. Market LED sales will reach $1.15 billion.
1
The products can provide various specifications of rectifier bridge devices according to customer requirements. The electrical properties, appearance, reliability, safety indicators and environmental protection indicators of the products all meet the relevant standards.
Planar Die Construction Sealed Glass Case Ideally Suited for Automated Insertion - 75V Nominal Zener Voltages
Case: MiniMELF, Glass Terminals: Solderable per MIL-STD-202, Method 208 Polarity: Cathode Band Approx. Weight: 0.05 grams= 25°C unless otherwise specified Symbol Pd VF RqJA Tj, TSTG Value to +175 Unit mW V K/W °C
Characteristic Forward Voltage = 200mA Thermal Resistance, Junction to Ambient Air (Note 2) Operating and Storage Temperature Range Notes:
1. Tested with Pulses, 20ms. 2. Valid provided that Electrodes are kept at Ambient Temperature.
1. Tested with pulses = 20 ms. 2. Valid provided that electrodes are kept at ambient temperature.
VZ, ZENER VOLTAGE (V) Fig. 1, Zener Current vs Zener Voltage
25 20 VZ, ZENER VOLTAGE (V) Fig. 8, Zener Current vs Zener Voltage
TA, AMBIENT TEMPERATURE (°C) Fig. 3, Power Dissipation vs Ambient Temperature
15 20 VZ, ZENER VOLTAGE (V) Fig. 4, Differential Zener Impedance
VZ, ZENER VOLTAGE (V) Fig. 5, Junction Capacitance vs Zener Voltage
MINI MELF,Smd mini melf,zener mini melf,mini melf package,mini melf resistor,mini melf diode,mini melf resistor datasheet
Changzhou Changyuan Electronic Co., Ltd. , https://www.cydiode.com