Supply of new RD-91 package BTA25-600B triac 7 days of receipt of goods and found goods have any quality problems, please contact us SCR BTA212, let us first clear understanding of your problem, provide us with the appropriate Problem pictures. After the communication, if confirmation is our product quality problems caused by human error rather than your SCR BTA216, we agree that you get approval to return the goods; and to ensure that goods are clean and free of stains, without any man-made damage and scratches , may be shifting new SCR, please return it when packed. Please check the delivery address when we return it. We do not accept no communication to pay return shipping way! If you insist on returning to pay, we all refused to sign and receive! Goods sent to the buyer, the buyer no quality problems, no transportation problem, without justification, do not communicate with the seller shall not return, hope to understand! If SCR remains on A pole or pole disconnect G T2 pole position pointer immediately return ∞, then the SCR trigger current is too large or damaged. The method may further measurements Figure 2, for a one-way SCR, closing the switch K, lights should be lit, disconnect K lamp remains off thyristor interest BTA412Y, otherwise explain SCR damage. For triac, closing the switch K, lights should be lit, disconnect K, lights should be quenched. Then reverse battery, repeat the above steps, the result should be the same, it is a good description. Otherwise, it means that the device has been damaged SCR BTA316 |. Are fertile Electronics (certified) | SCR Dongguan City is provided by Wal-Electronic Technology Co., Ltd. Dongguan City is Wal-Electronic Technology Co., Ltd. (www.dgmydz.com) (www.dgmydz.com) is Dongguan, FET leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum limits to meet customer needs. Wal-electronics leader in the positive with the staff warmly welcome all inquiries negotiations to create a positive future Wal-electron better. You can also access (www.dgmydz.com/supply_details_48687730.html), for more information about the company.