• AIChipLink
    • Input keywords/ Part number
    • Manufacturers
    • Hot ProductsHot Products
    • RFQ
    • Blog
    • Quality Control
    • Tools
    • About Us
    • Input keywords/ Part number
    AIChipLink

    info@aichiplink.com

    +86 075582712476

    FacebookLinkedinInstagramX

    Company

    About UsBlogQuality ControlContact Us

    Resources

    CategoriesManufacturerRequest a Quote

    Payment

    Payment
    Payment
    Payment
    Payment

    Shipping

    Shipping
    Shipping
    Shipping
    Shipping

    Copyright © 2025 Power by AIChiplink Limited

    Privacy Policy
    Terms & Conditions
    Cookies Policy
    Refund & Return Policy
    Shipping & Delivery Policy

    Contact Us

    Email Us: info@aichiplink.comCall Us: +86 075582712476Feedback

    Follow Us

    FacebookLinkedinInsX

    Company

    About UsContact Us

    Resources

    CategoriesManufacturerRequest a Quote

    Payment

    Payment
    Payment
    Payment
    Payment

    Shipping

    Shipping
    Shipping
    Shipping
    Shipping

    Copyright © 2025 Power by AIChiplink Limited

    Privacy Policy
    Terms & Conditions
    Cookies Policy
    Refund & Return Policy
    Shipping & Delivery Policy
    1. Home
    2. Discrete Semiconductors
    3. Transistors
    4. STD840DN40

    In Stock :Available

    Looking for price or availability? Send us an RFQ and our sales team will respond quickly.

    checkAuthentic Components
    checkFast Global Shipping
    checkESD & IEC Compliance
    checkFull Traceability

    Shipping & Availability

    DHL
    EMS
    FedEx
    UPS

    Fast worldwide shipping via DHL, FedEx, UPS, and EMS.

    Shipped from:HK Warehouse
    Expected Shipping:Mon, Nov 9 - Tue, Nov 10, 2026
    Lead Time:Inquire about availability
    Date Code:Within 2 Years

    Payment

    PayPal
    MasterCard
    Visa
    American Express

    We support multiple secure payment methods including PayPal, Visa, MasterCard, and American Express. All transactions are protected with advanced encryption to ensure secure and reliable payments.

    Authenticity Guarantee

    All components supplied by Aichiplink are sourced from trusted global suppliers and verified through strict in-house inspection and quality control procedures.

    Quality Assurance

    Certified in-house inspection and testing facilities ensure all components meet internationally recognized quality standards.

    User Guide

    Certified Quality & Compliance
    Purchase & Inquiry
    Package
    Shipping Information

    Available from AS9120 Certified Supplier, AIChipLink delivers high-reliability electronic components supported by certified quality management, rigorous inspection processes, counterfeit mitigation controls, and full traceability systems. Our operations comply with AS9120, ISO 9001:2015, and IECQ ESD standards to support aerospace, industrial, defense, and mission-critical applications.

    AIChipLink – Your Trusted Electronic Components Distributor

    Step1

    12.28 M

    Listed Part Number
    Step1

    3,000+

    Leading Manufacturers
    Step1

    4.9 M

    In-stock SKU
    Step1

    15,000+

    Warehouse Area(㎡)
    STMicroelectronics STD840DN40
    STMicroelectronics STD840DN40

    STMicroelectronics STD840DN40

    Manufacturer No:

    STD840DN40

    Manufacturer:

    STMicroelectronics

    Package:

    8-DIP (0.300, 7.62mm)

    Description:


    Quantity:

    DHL
    DHL
    DHL

    STD840DN40 Information

    Specifications
    Documents & Media
    Product Details

    STMicroelectronics STD840DN40 technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics STD840DN40.

    • Type
    • Parameter
    • Mount
    • Through Hole
    • Mounting Type
    • Through Hole
    • Package / Case
    • 8-DIP (0.300, 7.62mm)
    • Number of Pins
    • 8
    • Transistor Element Material
    • SILICON
    • Operating Temperature
    • 150°C TJ
    • Packaging
    • Tube
    • Part Status
    • Obsolete
    • Moisture Sensitivity Level (MSL)
    • Not Applicable
    • Number of Terminations
    • 8
    • Type
    • Parameter
    • ECCN Code
    • EAR99
    • Subcategory
    • Other Transistors
    • Max Power Dissipation
    • 3W
    • Base Part Number
    • STD840
    • Pin Count
    • 8
    • Number of Elements
    • 2
    • Polarity
    • NPN
    • Element Configuration
    • Dual
    • Power Dissipation
    • 3W
    • Transistor Application
    • SWITCHING

    STD840DN40 FAQ

    Can I request a quote for STD840DN40?

    STD840DN40 from STMicroelectronics is ready for RFQ submission. Send your target quantity and requirements, and AIChipLink will check current availability, lead time, and quantity-based pricing.

    Why is pricing not shown as a fixed value for STD840DN40?

    The final price for STD840DN40 depends on requested quantity, supply conditions, date code, package option, and destination. An RFQ lets us return the current market quote for your order.

    Which specifications should I review for STD840DN40?

    STD840DN40 is a STMicroelectronics Transistors part. Key details include Packaging: Tube and DC Current Gain (hFE) (Min) @ Ic, Vce: 8 @ 2A 5V and Collector Emitter Breakdown Voltage: 400V; contact us if you need the specifications verified before sourcing.

    When will I receive a quotation for STD840DN40?

    After you submit the RFQ for STD840DN40, our sales team typically replies within 24 hours with availability, unit pricing, lead time, shipping choices, and possible substitutes.

    What is the expected shipping time for STD840DN40?

    Once stock for STD840DN40 is confirmed, available inventory can generally ship within 1–2 business days. The final schedule depends on quantity, warehouse source, and delivery address.

    Can AIChipLink help find alternatives to STD840DN40?

    Yes. If STD840DN40 is unavailable, end-of-life, or outside your schedule, we can review comparable STMicroelectronics Transistors parts and compatible replacement options.

    STD840DN40 Relevant information

    Hot Sale
    Popular Search
    STMicroelectronics PD85015TRM-E

    PD85015TRM-E

    STMicroelectronics

    STMicroelectronics STS3C2F100

    STS3C2F100

    STMicroelectronics

    STMicroelectronics TYN412RG

    TYN412RG

    STMicroelectronics

    STMicroelectronics STE140NF20D

    STE140NF20D

    STMicroelectronics

    STMicroelectronics STL3N10F7

    STL3N10F7

    STMicroelectronics

    STMicroelectronics BUTW92

    BUTW92

    STMicroelectronics

    STMicroelectronics BTW69-1000RG

    BTW69-1000RG

    STMicroelectronics

    STMicroelectronics STY140NS10

    STY140NS10

    STMicroelectronics

    STMicroelectronics STB9NK70ZT4

    STB9NK70ZT4

    STMicroelectronics

    STMicroelectronics ACST1210-7T

    ACST1210-7T

    STMicroelectronics