Logo
Contact Us
Cookies Policy
Terms of Use
Privacy Policy
phone
Vivi (Sales)
phone
Lucy (Sales)
phone
Ban (Sales)
phone
+86 755-2845-3125
RFQ List
  • open navigation menu
    • Logo
    • RFQ List
      • Manufacturers
      • Hot Products
      • RFQ
      • Blog
      • Tools
      • Sourcing Solutions
      • PCB/SMT
      • About Us
    Certification badge
    Certification badge
    Certification badge
    Certification badge
    Certification badge
    Certification badge
    Certification badge
    Certification badge
    Certification badge
    Certification badge
    Certification badge
    Certification badge
    CONTACT US
    Customer Support:
    +86 755-2845-3125
    Room 2709B, 5A Office Building, Longguang Jiuzuan, Hongshan, Longhua District, Shenzhen, China
    [email protected]
    Company
    • Blog
    • About Us
    • Contact Us
    Resources
    • Categories
    • Manufacturers
    • Tools
    • RFQ
    Quick link
    • Privacy Policy
    • Terms of Use
    • Cookies Policy
    • Refund & Return Policy
    • Shipping & Delivery Policy
    Payment
    • Payment method
    • Payment method
    • Payment method
    • Payment method
    Logistics
    • Logistics partner
    • Logistics partner
    • Logistics partner
    • Logistics partner

    © 2026 Copyright. All Rights Reserved. Made by ICAllIn

    Part number
    Part number
    1. Home/
    2. All Categories/
    3. Discrete Semiconductors/
    4. Diodes & Rectifiers/
    5. 1N4978 Microchip

    1N4978 [Microchip]

    1N4978
    1N4978

    Part No:

    1N4978

    Category:

    Diodes & Rectifiers

    Manufacturer:

    Microchip

    Description:

    5 Watt voidless-hermetically-sealed glass Zener diodes, military qualified to MIL-PRF-19500/356 for high-reliability applications.

    Stock Status:

    Available for RFQ

    Pricing:

    Request Volume Pricing

    Quote Response:

    Within 24 Hours

    Shipping:

    In-stock parts ship in 1–2 business days

    Specification

    Type
    Parameter
    Case
    Hermetically sealed voidless hard glass with Tungsten slugs
    Forward Voltage (AT 1.0A)
    1.50V at 1.0A
    Operating Temperature
    -65°C ~ +175°C
    Packing
    Tape and reel
    Power Dissipation
    5W
    Storage Temperature
    -65°C ~ +175°C
    Terminations
    Copper with Tin/Lead (Sn/Pb) finish
    Thermal Impedance 10ms
    1.8°C/W (1N4954-1N4996), 3.0°C/W (1N6632-1N6637, 1N5968-1N5969)
    Thermal Resistance
    22°C/W (1N4954-1N4996), 30°C/W (1N6632-1N6637, 1N5968-1N5969)
    Weight
    750 mg

    Products Detail

    This Zener Voltage Regulator series includes selections from 3.3 to 390 volts in standard 5% tolerances and tighter tolerances. Hermetically sealed with voidless-glass construction and internal metallurgical bonds. Available in axial-lead and surface-mount packages. Features triple-layer passivation, robust construction, and military qualification grades (JAN, JANTX, JANTXV, JANS).

    Key Features

    • Popular JEDEC registered series
    • Voidless hermetically sealed glass package
    • Extremely robust construction
    • Triple-layer passivation
    • Internal 'Category I' Metallurgical bonds for 1N4954-1N4996, 'Category III' for 1N6632-1N6637 and 1N5968-1N5969
    • JAN, JANTX, JANTXV, and JANS available per MIL-PRF-19500/356
    • Surface mount equivalents available with 'US' suffix

    Application scenarios

    • High-reliability applications
    • voltage regulation over broad operating current and temperature range
    Product FAQ

    1. Is 1N4978 available for RFQ?

    Yes. 1N4978 by Microchip is available for RFQ. Submit your required quantity and our team will confirm real-time stock, lead time, and volume pricing.

    2. Why is there no fixed price for 1N4978?

    Pricing for 1N4978 can vary by order quantity, market availability, date code, packaging, and delivery destination. Request a quote to receive the latest volume pricing.

    3. What are the key specifications of 1N4978?

    1N4978 is a Microchip Diodes & Rectifiers with Forward Voltage (AT 1.0A): 1.50V at 1.0A and Thermal Impedance 10ms: 1.8°C/W (1N4954-1N4996), 3.0°C/W (1N6632-1N6637, 1N5968-1N5969). Review the product details or submit an RFQ if you need confirmation before purchase.

    4. How fast can I get a quote for 1N4978?

    Our sales team usually responds within 24 hours after receiving your RFQ. The quote may include stock status, unit price, lead time, shipping options, and available alternatives.

    5. How soon can 1N4978 be shipped?

    If stock is confirmed, in-stock parts can usually ship within 1–2 business days. Final lead time depends on quantity, stock source, and delivery destination.

    6. Can you suggest alternatives to 1N4978?

    Yes. If 1N4978 is unavailable, obsolete, or does not meet your required lead time, we can help check similar Microchip Diodes & Rectifiers parts or compatible alternatives.

    RFQ

    Part Number:

    1N4978

    Manufacturer:

    Microchip

    Looking for Pricing? Contact us for volume pricing.

    Shipping & Warranty

    Fast Dispatch: Ships in 5-7 days(in-stock parts within 1-2 days)

    Unishop Global Export: 1-7 days, $40.00

    Guaranteed Delivery: Door-to-door in 30 days

    Compliant Worldwide Shipping: DHL, FedEx, SF, and UPS.

    Feature

    • 30-Day Guarantee
      30-Day Guarantee
    • Fasted Delivery
      Fasted Delivery
    • Hassle-Free Returns
      Hassle-Free Returns
    • Secure payment method
      Secure payment method

    IMPORTANT NOTICE

    Quotations are subject to stock availability and may vary with market conditions. Prices and lead times are not guaranteed until a purchase order is confirmed. Ensure your contact details are correct to avoid delays in response.

    Featured Product
    Related Information
    • Part Number
      Manufacturer
      Stock Status
      Pricing
      RoHS/Datasheet
    • 1N4736CE3/TR13
      Microchip
      Available for RFQ
      Request Volume Pricing
    • 1N3021BUR-1/TR
      Microchip
      Available for RFQ
      Request Volume Pricing
      -
    • 1N4981
      Microchip
      Available for RFQ
      Request Volume Pricing
      -
    • 1N4761P/TR8
      Microchip
      Available for RFQ
      Request Volume Pricing
    • 1N4741APE3/TR8
      Microchip
      Available for RFQ
      Request Volume Pricing
    • 1N1352A
      Microchip
      Available for RFQ
      Request Volume Pricing
    • 1N4748P/TR12
      Microchip
      Available for RFQ
      Request Volume Pricing
      -
    • 1N2996B
      Microchip
      Available for RFQ
      Request Volume Pricing
    • 1N4754PE3/TR8
      Microchip
      Available for RFQ
      Request Volume Pricing
    • 1N4750APE3/TR12
      Microchip
      Available for RFQ
      Request Volume Pricing
      -

    1N4150UBD

    1N4150UBD

    Microchip

    1N3826A-1/TR

    1N3826A-1/TR

    Microchip

    1N4762CPE3/TR12

    1N4762CPE3/TR12

    Microchip

    1N4748AE3/TR13

    1N4748AE3/TR13

    Microchip

    1N4560B

    1N4560B

    Microchip

    1N3040B-1

    1N3040B-1

    Microchip

    1N4750CP/TR8

    1N4750CP/TR8

    Microchip

    1N4106DUR-1JAN/TR

    1N4106DUR-1JAN/TR

    Microchip

    1N3051B-1/TR

    1N3051B-1/TR

    Microchip

    1N4751APE3/TR8

    1N4751APE3/TR8

    Microchip

    Discrete & Power Modules(14567)Transistors(202881)Thyristors(12548)

    No recently viewed products

    BEST SELL
    BQ27441DRZR-G1AG4

    BQ27441DRZR-G1AG4

    Texas Instruments

    BEST SELL
    ISL8215MIRZ

    ISL8215MIRZ

    RENESAS

    BEST SELL
    MTFC2GMDEA-0M WT A

    MTFC2GMDEA-0M WT A

    Micron

    BEST SELL
    ADF4351BCPZ

    ADF4351BCPZ

    Analog Devices

    BEST SELL
    H9TQ64A8GTDCUR-KUM

    H9TQ64A8GTDCUR-KUM

    SK HYNIX

    BEST SELL
    MT41K512M16VRP-107 IT:P

    MT41K512M16VRP-107 IT:P

    Micron

    BEST SELL
    MCX75510AAS-NEAT

    MCX75510AAS-NEAT

    NVIDIA

    BEST SELL
    K4A8G085WC-BIWE

    K4A8G085WC-BIWE

    SAMSUNG

    BEST SELL
    K4A4G085WF-BCTD

    K4A4G085WF-BCTD

    SAMSUNG

    BEST SELL
    PMEG4010CEGW-QJ

    PMEG4010CEGW-QJ

    NEXPERIA