Effective solution to the resistance of chip resistors to acid corrosion

For chip resistor products used around car engines, under certain circumstances, the phenomenon of abnormal resistance will occur, causing problems in the function of the entire product. In view of this situation, the engineers of Meilong Electronics explained the possible causes. This kind of situation is caused by the fact that ordinary chip resistors are easily affected by the vulcanization environment. So what should we do in this situation?

To this end, the R & D team of Meilong Electronics has made a special process of anti-sulfur chip resistors by adding sulfide-resistant materials to the electrodes to effectively solve the impact of chip resistors in the vulcanized environment. Let us together Learn more about this special anti-sulfide chip resistor.

The role of anti-vulcanization chip resistors (AS series)

High-concentration sulfur gas is a major extreme situation that affects electronic products. For electronic products exposed to high-concentration sulfur gas areas such as industrial control systems, sensors, instrumentation equipment, communication base stations, etc., sulfur gas will come from the electrodes of the chip resistors The gap with the protective layer enters and combines with the silver material of the terminal electrode of the chip resistor to produce silver sulfide, which leads to the insulation of the chip resistor, which makes the electronic device failure or even dangerous. Anti-vulcanization chip resistors have high anti-vulcanization performance, can work normally and stably in sulfur-containing environments, have outstanding performance and long life, and can effectively solve the effect of corrosion and vulcanization of electronic components.

Product Features

1. Small size and light weight;

2. Adapt to reflow welding and wave soldering;

3. Stable electrical performance and high reliability;

4. Low assembly cost and matching with automatic mounting equipment;

5. High mechanical strength, excellent high frequency characteristics, and extremely strong anti-vulcanization effect;

6. Comply with RoHS directive requirements;

Note: Anti-vulcanization resistance structure diagram

Anti-vulcanization chip resistor (AS series) product parameters:

Specification size: 0201, 0402, 0603, 0805, 1206, 2010, 2512;

Resistance value range: 1Ω ~ 10MΩ (10ohm-100Mohm);

Resistance accuracy: ± 0.5%, 1%, 5%;

Rated power: 1 / 20W, 1 / 16W, 1 / 10W, 1 / 8W, 1 / 4W, 1 / 3W, 3 / 4W, 1W;

Temperature drift coefficient (TCR): 100ppm, 200ppm / ℃;

Temperature range: -55 ° c— + 155 ° c or -55— ﹢ 125 ° C (0201 size, 1 / 20W) anti-vulcanization chip resistor

Parameter details

(1) Infrared reflow soldering time at the highest temperature of 260 degrees for 10 seconds

(2) Wave soldering time at the highest temperature of 260 degrees for 10 seconds

(3) The time of the soldering iron at the highest temperature of 410 degrees for 5 seconds

main application

1. Automotive

2. On high-end computers, it has the function of anti-vulcanization

3. Industrial equipment

4. Automatic device controller

5. Medical equipment

6. Where high-end multimedia electronic outdoor electronic applications and other requirements meet the anti-vulcanization effect.

Material storage and transportation requirements

Non-naked packaging

Temperature requirement: 5 ℃ ~ 35 ℃

Humidity requirement: 25% ~ 75%

Shelf life: 1 year from shipment

Anti-extrusion / collision: prevent the outer box or reel from deforming during handling and storage

other request

Moisture-proof: Control the storage temperature and humidity. It is recommended to confirm whether the ambient temperature and humidity are within the required range every day. If an abnormality is found, you can use a dehumidifier or air conditioner to adjust it.

Note: Bare packaging means that the original packaging of the material is split and then stored.

Anti-extrusion / collision: prevent the outer box or reel from deforming during handling and storage.

Finally, it should be pointed out that the product performance and welding connection may deteriorate when stored in a high static environment or in sunlight, rain, snow or condensation. If you have any questions about the product, you are welcome to consult our customer service staff, we will Provide you with professional, timely and patient service.

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