Products > Circuit Protection > TVS Diodes > SMAJ28A-TR
  • SMAJ28A-TR

Images are for reference only.


Hot Sale

TRANSIL,TVS Diodes - Transient Voltage Suppressors 400W 28V Unidirect

  • Package/Case :
  • DO-214AC
  • Product Categories :
  • TVS Diodes - Transient Voltage Suppressors
  • RoHs Status:
  • Green
  • Marking Code:
  • CG
  • In-stock:
  • 240000


Request for Quotation

Warm Tips: Please fill out the below form and we will contact you as soon as possible.

SMAJ28A-TR Product Details

The SMAJ28A-TR Transil series has been designed to protect sensitive equipment against electrostatic discharges according to IEC 61000-4-2, and MIL STD 883, method 3015, and electrical over stress according to IEC 61000-4-4 and 5. These devices are generally used against surges below 400 W (10/1000 μs).

Planar technology makes these devices suitable for high-end equipment and SMPS where low leakage current and high junction temperature are required to provide reliability and stability over time. SMAJ28A-TR are packaged in SMA (SMA footprint in accordance with IPC 7531 standard).


  • Peakpulsepower:
    • 400W(10/1000μs)
    • 2.3kW(8/20μs)
  • Standoffvoltagerange:from5Vto188V
  • Unidirectionalandbidirectionaltypes
  • Lowleakagecurrent:
    • 0.2μAat25°C
    • 1μAat85°C
  • OperatingTjmax:150°C
  • HighpowercapabilityatTjmax:
    • 270W(10/1000μs)
  • JEDECregisteredpackageoutline
  • Complieswiththefollowingstandards
    • IEC61000-4-2level4
      • 15kV(airdischarge)
      • 8kV(contactdischarge)
    • IEC61000-4-5(seeTable3forsurgelevel)
    • MILSTD883G,method3015-7Class3B
      • 25kVHBM(humanbodymodel)
    • ResinmeetsUL94,V0
    • MIL-STD-750,method2026solderability
    • EIASTDRS-481andIEC60286-3packing
    • IPC7531footprint

Technical Parameters

  • Polarity
  • Unidirectional
  • Operating Voltage
  • 28 V
  • Breakdown Voltage
  • 31.1 V
  • Clamping Voltage
  • 59 V
  • Peak Surge Current
  • 1 mA
  • Series
  • SMAJ
  • Package / Case
  • DO-214AC
  • Minimum Operating Temperature
  • - 55 C
  • Maximum Operating Temperature
  • + 150 C
  • Capacitance
  • 510 pF
  • Channels
  • 1 Channel
  • Dimensions
  • 2.95(Max) mm W x 4.6(Max) mm L
  • Packaging
  • Reel
  • Peak Pulse Power Dissipation
  • 400 W
  • Factory Pack Quantity
  • 5000
  • Termination Style

SMAJ28A-TR Documents

SMAJ28A-TR Related Products

Ratings and Reviews

  • 0 / 5
  • 5 Stars 0%
  • 4 Stars 0%
  • 3 Stars 0%
  • 2 Stars 0%
  • 1 Stars 0%
  • Ratings
  • Please rate the product!
Shipping More
Estimated Delivery Time: Aug 06 - Aug 11 days (choose Expedited at checkout).

Shipping & Payment


  • Shipping Type
  • Ship Fee
  • Lead Time
  • $20.00-$40.00 (0.50 KG)
  • 2-5 days
  • $20.00-$40.00 (0.50 KG)
  • 3-7 days
  • $20.00-$45.00 (0.50 KG)
  • 2-5 days
  • $25.00-$65.00 (0.50 KG)
  • 2-5 days
  • $25.00-$45.00 (0.50 KG)
  • 5-14 days
  • $2.00-$3.00 (0.10 KG)
  • 7-30 days

Processing Time:Shipping fee depend on different zone and country.


  • Terms of payment
  • Hand Fee
  • Payment Site
  • charge US$30.00 banking fee.
  • charge 4.0% service fee.
  • charge 3.5% service fee.
  • charge US$0.00 banking fee.
  • charge US$0.00 banking fee.

We provide high quality products, thoughtful service and after sale guarantee

  • We have rich products, can meet your various needs.

    We have rich products, can meet your various needs.

  • Minimum order quantity starts from 1pcs.

    Minimum order quantity starts from 1pcs.

  • Lowest international shipping fee starts from US$2.00.

    Lowest international shipping fee starts from US$2.00.

  • 90 days quality guarantee for all products.

    90 days quality guarantee for all products.


  • Step1:Product

    Step1: Products

  • Step2:Vacuum packaging

    Step2: Vacuum Packaging

  • Step3:Anti-static bag

    Step3: Anti-Static Bag

  • Step4:Individual packaging

    Step4: Individual Packaging

  • Step5:Packaging boxes

    Step5: Packaging Boxes

  • Step6:bar-code shipping tag

    Step6: Bar-Code Shipping Tag

All the products will packing in anti-staticbag. Ship with ESD antistatic protection.

Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.

We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.

After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.

Jotrin ESD packing


1.We provide 90 days warranty.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.


Q: How does Jotrin guarantee that SMAJ28A-TR is the original manufacturer or agent of ST?
We have a professional business development department to strictly test and verify the qualifications of ST original manufacturers and agents. All ST suppliers must pass the qualification review before they can publish their SMAJ28A-TR devices; we pay more attention to the channels and quality of SMAJ28A-TR products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of SMAJ28A-TR chips? Including ST original factory information, TVS Diodes - Transient Voltage Suppressors application, SMAJ28A-TR pictures?
You can use Jotrin's intelligent search engine, or filter by Protection Devices ; EOS 10;1000 microsecond surge protection ; 400W TVS category, or find it through STMicroelectronics, Inc Information page.
Q: Are the ST's SMAJ28A-TR price and stock displayed on the platform accurate?
The ST's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for SMAJ28A-TR, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
Q: Can I place an order offline?
Yes. We accept offline orders.
We can provide order placement service. You only need to log in, click "My Orders" to enter the transaction management, and you will see the "Order Details" interface. After checking it, select all and click "Place Order". In addition, you can enjoy coupons or other selected gifts when placing orders online.
Q: What forms of payment can I use in Jotrin?
TT Bank, Paypal, Credit Card, Western Union, and Escrow is all acceptable.
Q: How is the shipping arranged and track my package?
Customers can choose industry-leading freight companies, including DHL, FedEx, UPS, TNT, and Registered Mail.
Once your order has been processed for shipment, our sales will send you an e-mail advising you of the shipping status and tracking number.
Note: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, Registered Mail needs 25-60 days.
Q: What is the process for returns or replacement of SMAJ28A-TR?
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 SMAJ28ATR we delivered, we will accept the replacement or return of the SMAJ28A-TR 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 SMAJ28A-TR.
(3)The SMAJ28A-TR 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
More details about return electronic components please see our Return & Change Policy.
Q: How to contact us and get support, such as SMAJ28A-TR datasheet pdf, SMAJ pin diagram?
Need any After-Sales service, please feel free contact us:

STMicroelectronics, Inc

ST Microelectronics is a global independent semiconductor company and a leader in developing and delivering semiconductor solutions across the spectrum of microelectronics applications, and that designs, develops, manufactures and markets a broad spectrum of products....
  • SMAJ26A-TR
    SMAJ26A-TR TRANSIL,TVS Diodes - Transient Voltage Suppressors 400W 26V Unidirect
    SMAJ24CA-TR Bi-Directional TVS Diode, 400W, 2-Pin DO-214AC
    SMAJ26CA-TR Bi-Directional TVS Diode, 400W, 2-Pin DO-214AC
  • SMAJ250CA
    SMAJ250CA LITTELFUSE SMAJ250CA TVS Diode, SMAJ Series, Bidirectional, 250V, 405V...
  • SMAJ26A
  • SMAJ26A-13-F

Certificates & Honor

Certificates & Honor