![]() ![]() Sale items cannot be refunded or exchanged. If you’ve done all of this and you still have not received your refund yet, please contact us at items There is often some processing time before a refund is posted. R1, R2, R3, and R4: These are the polarization resistances and must be carefully calculated. The 2N2222 and BC549 models were used in this case. Then contact your credit card company, it may take some time before your refund is officially posted. In theory, any generic transistor model should suffice for low frequencies. If you have not received a refund yet, please check your bank account again. Upon approval, your refund will be processed to your credit card or original method of payment. If an exchange for the defective item is not viable, we will offer a refund instead. However, if no reasonable defect is found, you will be responsible for paying for your own re-shipping fees.ĭepending on where you live, the time it may take for your exchanged product to reach you may vary. The PN2222A are a good inexpensive general purpose NPN transistor for low to moderate power amplification and switching and should be part of every parts bin. If you are eligible for an exchange, we will arrange for the exchanged item/s to be delivered to your address at no additional charge.
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