National Semiconductor LM2991SX

FAQ:

1.How to find the detailed information of LM2991SX chips/componets? Including National Semiconductor original factory information, LM2991SX pictures, PMIC - Voltage Regulators - Linear application?

You can use the intelligent search engine of jinftry.com, or filter by Active Filters category, or find it through National Semiconductor page.

2.How does Jinftry guarantee that LM2991SX is the original manufacturer or agent of National Semiconductor?

We have a very professional business development department to strictly test and verify the qualifications of National Semiconductor original manufacturers and agents. All National Semiconductor suppliers must pass the qualification review before they can publish their LM2991SX devices; we pay more attention to the channels and quality of LM2991SX products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.

3.Are the LM2991SX price and stock displayed on the platform accurate?

The National Semiconductor's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for LM2991SX, it is recommended to confirm the order with Jinftry salesperson or online customer service before payment.

4.What forms of payment can I use in Jinftry?

TT Bank,Wire Transfer, Paypal, Credit Card, Western Union, and Escrow is all acceptable.

5.How is the shipping arranged and track my package?

Customers can choose industry-leading freight companies, including DHL, UPS, FedEx, TNT, and Registered Mail.

Once your order has been processed for shipment, our sales will send you an email advising you of the shipping status and tracking number.

Warm Tips: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, and Registered Mail needs 25-60 days.

6. What is the process for returns or replacement of LM2991SX?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the LM2991SX we delivered, we will accept the replacement or return of the LM2991SX only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of LM2991SX.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations

7.How to contact us and get support of technology, such as LM2991SX pin diagram, LM2991SX datasheet pdf?

If you need any After-Sales service, please feel free contact us: service@jinftry.com or sales@jinftry.com .