Name: SM4T21AY
Brand: STMicroelectronics
SKU: SM4T21AY
Availability: InStock
Rating: 5 (70 reviews)

SM4T21AY

For Reference Only

Part Number	SM4T21AY
Manufacturer	STMicroelectronics
Description	TVS DIODE 18VWM 39.3VC SMA
Datasheet	SM4T21AY Datasheet SM4T21AY Specifications
Package	DO-214AC, SMA
ECAD
In Stock	2,016 piece(s)
Unit Price	Request a Quote
Lead Time	To be Confirmed
Estimated Delivery Time	May 3 - May 8 (Choose Expedited Shipping)
Request for Quotation

Payment Methods
Delivery Services

Part Number # SM4T21AY (TVS - Diodes) is manufactured by STMicroelectronics and distributed by Heisener. Being one of the leading electronics distributors, we carry many kinds of electronic components from some of the world’s top class manufacturers. Their quality is guaranteed by its stringent quality control to meet all required standards.

For SM4T21AY specifications/configurations, quotation, lead time, payment terms of further enquiries please have no hesitation to contact us. To process your RFQ, please add SM4T21AY with quantity into BOM. Heisener.com does NOT require any registration to request a quote of SM4T21AY.

SM4T21AY Specifications

Manufacturer	STMicroelectronics
Category	Circuit Protection - TVS - Diodes
Package	DO-214AC, SMA
ECAD
Series	Automotive, AEC-Q101, SM4TY, TRANSIL?
Type	Zener
Unidirectional Channels	1
Bidirectional Channels	-
Voltage - Reverse Standoff (Typ)	18V
Voltage - Breakdown (Min)	20V
Voltage - Clamping (Max) @ Ipp	39.3V
Current - Peak Pulse (10/1000µs)	59A (8/20µs)
Power - Peak Pulse	400W
Power Line Protection	No
Applications	Automotive
Capacitance @ Frequency	-
Operating Temperature	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Package / Case	DO-214AC, SMA
Supplier Device Package	SMA (DO-214AC)

SM4T21AY Datasheet

SM4T21AY Reviews

Any*****har

March 4, 2023

★ ★ ★ ★ ★

I'm so sure that you're beating your competitor on delivery!

Jim*****Bond

February 27, 2023

★ ★ ★ ★ ★

All resistors exactly -0.01%. Pretty good.

Ricar*****mirez

February 24, 2023

★ ★ ★ ★ ★

Perfectly functioning!! on time and as described!

Write a Review

★★★★★

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SM4T21AY Packaging

SM4T21AY FAQ

1. How to order SM4T21AY on Heisener?

Currently, Heisener only provide peer-to-peer order processing. While you submit the RFQ, our professional agent will contact you with the competitive prices in the global market, and our agent will prompt you to finish the order if you accept our offers.
2. How does Heisener guarantee that SM4T21AY is from the original manufacturer or authorized agents?

We have a professional and experienced quality control team to strictly verify and test the SM4T21AY. All suppliers must pass our qualification reviews before they can publish their products including SM4T21AY on Heisener; we pay more attention to the channels and quality of SM4T21AY products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
3. Are the SM4T21AY price and inventory displayed accurate?

The price and inventory of SM4T21AY fluctuates frequently and cannot be updated in time, it will be updated periodically within 24 hours. And, our quotation usually expires after 5 days.
4. What forms of payment are accepted?

Wire Transfer, PayPal, Alipay, Wechat, Credit Card, Western Union, MoneyGram, and Escrow are all acceptable.

Warm Tips: Some orders in certain payment forms may require handling fee.
5. How is the shipping arranged?

Customers can choose industry-leading freight companies, including DHL, UPS, FedEx, TNT, and Registered Mail. Shipping insurance is also available.

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

Warm Tips: It may take up to 24 hours for the carriers to display tracking information. Usually, express delivery takes 3-5 days, and registered mail takes 25-60 days.
6. What is the process for return or replacement of SM4T21AY?

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 SM4T21AY we delivered, we will accept the replacement or return of the SM4T21AY 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 SM4T21AY.

(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 to get technical supports, such as SM4T21AY pin diagram, SM4T21AY datasheet?

If you need any after-sales service, please do not hesitate to contact us.

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SM4T21AY Guarantees

Service Guarantees

We guarantee 100% customer satisfaction.

Our experienced sales team and tech support team back our services to satisfy all our customers.

Quality Guarantees

We provide 90 days warranty.

If the items you received were not in perfect quality, we would be responsible for your refund or replacement, but the items must be returned in their original condition.

Global Supply Chains - Reliable and Authorized Distributor Resources

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shipping today

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SM4T21AY

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