05D High-Energy Chip Varistor 05D271 05D471 05D511 For Instruments

1 Application areas

1.1 LED, DOB LED

1.2 Electrical instruments

1.3 Security equipment

1.4 Communication equipment

1.5 Home appliances

2 product features

2.1 Meet RoHS requirements

2.2 SMD packaging, convenient for automation

2.3 Use saves labor and has high cost performance

2.4 Using high-energy pressure-sensitive chips, it has high energy absorption density and good pulse performance.

2.5 Performance remains stable for a long time

2.6 Wide operating temperature range: -40℃～125℃

2.7 Safety certification: UL/cUL, TUV, CQC

3 Product coding rules

4 Product Identification:LK

5 Dimensions

5.1 Product size and appearance(unit:mm)

5.2 Pad size design recommendations

6 Main electrical properties

7 Reliability

8 Pulse resistance performance test method

8.1 Maximum inrush current (8/20μs lightning wave)

Experimental method: Extract two groups of 10 chip varistors each from the batch number, and test the varistor voltage and leakage current parameters. One group is applied with a peak current I1 lightning pulse once, and the other group is applied with a peak current I2 lightning pulse twice ( interval of 60 seconds), and test the pressure-sensitive parameters of the sample after cooling. After the test, the sample is required to have no visible damage on its appearance, a varistor voltage change rate of ≤10%, a leakage current of ≤30μA after the test, and a nonlinear coefficient of ≥20.

8.2 Maximum flow capacity (8/20 -1.2/50μs combined wave)

Experimental method: Extract 10 chip varistors from the batch number, test the varistor parameters, apply combined wave pulses with the open-circuit voltage and short-circuit current peaks respectively being the maximum current capacity voltage/current values 40 times (the interval between two times is 60 seconds, changing the direction of the pulse signal every 5 times), and test the pressure-sensitive parameters of the sample after cooling. After the test, the sample is required to have no visible damage on its appearance, a varistor voltage change rate of ≤10%, a post-test leakage current of ≤50μA, and a nonlinear coefficient of ≥20.

9 Packing

9.1 Tape packaging size (unit:mm)

9.1.1 5D series

9.1.2 7D series

9.1.3 10D series

9.2 Packing quantity

10 Precautions

10.1 Conventional

■ LKVDRH is suitable for LED lights, electrical instruments, security equipment, communication equipment, home appliances and other products. Considering product applicability and reliability, it should not be used in other aspects unless permitted by the company during the design stage.

■ In order to ensure the reliability of chip varistor in actual use, extreme working conditions should be taken into consideration during the design stage and a certain margin should be left.

■ To avoid arcing, the edge of the varistor chip should be at least 2.5mm away from other conductive components. If space permits, the larger the distance, the better.

■ In order to improve product safety and reliability, it is recommended that the circular electrode of the chip body be used as the L line and the square hardware terminal be used as the N line when designing the pad.

■ To reduce the chance of damage to the silicon bridge, it is not recommended to install the varistor in a rectified DC circuit.

10.2 Usage environment

■ Ambient temperature: -40-125℃

■ Relative humidity: ≤95%

■ Atmospheric pressure: 86-106Kpa

■ Vibration frequency: 10-50Hz

■ Acceleration: 98m/S²

10.3 Storage

■ Should be stored in the original packaging of the varistor and do not open the packaging for storage;

■ Original packaging storage conditions: storage temperature -25 °C to +45 °C, average annual relative humidity ≤75%, maximum not exceeding 95%;

■ For chip varistors, contamination of the varistor surface during storage, handling and processing should be avoided;

■ Varistors should avoid being stored in other harmful environments that may affect their performance;

■ Please use the varistor within 6 months after receiving the goods.

10.4 Transport

■ The varistor should avoid falling and collision during transportation;

■ It is recommended to wear gloves when handling varistor;

■ For chip type varistor, contamination of the silver surface of the varistor should be avoided during transportation.

10.5 Welding (where applicable)

■ It is recommended to use medium and low temperature solder paste as soldering material;

■ Insufficient preheating may cause cracks in the varistor ceramic chip;

■ The recommended welding temperature is 255±5℃. Excessive welding temperature may cause the varistor electrode to corrode silver;

■ Rapid cooling by immersion in solvent is not advisable;

■ It is recommended to completely remove the flux after soldering.

roduct Description

The QV0402~2220H Series SMD Varistor Element is a surface mounted varistor device that is available in a wide range of sizes from 0402 to 2220, and with a varistor voltage @1mA DC from 12V to 102V. This surface mounted varistor element also offers an external dimension of 1206 0.12×0.06 (3.2×1.6) and 1812 0.18×0.12 (4.5×3.2) inch (mm). It comes with a peak current (8/20μs) IP of 20 to 1200 (A), making it suitable for a large variety of applications. With its excellent electrical characteristics and high reliability, this QV Series SMD Varistor Element is a great choice for any surface mounted varistor application.

Features:

• Surface Mounted Varistor Element
• Surface Mounted Varistor Device
• SMD Varistor Device
• Varistor Voltage: 12V-102V at 1mA DC
• External Dimension: 1206 (0.12×0.06 inches / 3.2×1.6 mm) and 1812 (0.18×0.12 inches / 4.5×3.2 mm)
• Max. Working Voltage: DC 5.5V-85V and AC 4V-60V
• Tolerance of Varistor Voltage: ±10% and ±15%
• Size: 0402- 2220

Technical Parameters:

Applications:

Lin Kun SMD Varistor is a surface mount varistor device, which is widely used in various applications. It is a surface mounted varistor component with high-quality and reliable performance. The brand name Lin Kun is UL, VDE, and CSA certified and has a minimum order quantity of 4000/3000/2000pcs/plate. This SMD varistor has a peak current of 20-1200 (A) for 8/20μs and a maximum clamping voltage of 24-175 (V) for 8/20μs. Its part number is QV0402～2220H Series and the maximum working voltage is DV: 5.5V-85V and AC: 4V-60V, and the varistor voltage @1mA DC is 12V-102V. The price of the SMD Varistor is negotiable and it has a fast delivery time of 5-7 days. The payment terms are T/T, Paypal, and Western Union. The supply ability of the SMD Varistor is 1000000PCS/Month.

Customization:

Support and Services:

SMD Varistor Technical Support and Service
We provide technical support and service for SMD Varistor products to our customers. Our support team is staffed with product experts who are available to answer your questions, provide product information, and help with troubleshooting and installation.
We also have a library of technical documents and resources available to our customers, including user manuals, product datasheets, and application notes. If you need additional assistance, our team is available to provide personalized technical support.
We provide a complete satisfaction guarantee for all SMD Varistor products. If you're not completely satisfied with your purchase, we'll work to find the best solution for you.

Packing and Shipping:

SMD Varistor Packaging and Shipping:
The SMD Varistor is packaged in moisture-proof and sealed bags. The bags are then placed in a cardboard box for shipping. The box is marked with the product name and part number. The box is then secured with packing tape, placed in an outer corrugated shipping box, and labeled with the destination address.

FAQ: