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ONSEMI 1N4739A Zener Diode

The ONSEMI 1N4739A is a standard silicon zener diode designed for voltage regulation and overvoltage protection applications. It is encapsulated in a DO-41 glass case and features a color band to denote the cathode. Key electrical characteristics include a Zener voltage ranging from 3.135V to 19V, depending on the specific device variant. The diode's robust design and reliable performance make it suitable for use in a wide range of industrial and consumer electronic devices, including power supplies, voltage regulators, and protection circuits. Its maximum power dissipation and operating temperature range ensure stability and longevity in demanding environments.

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Part No:1N4739A
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Inv Date:06-10-2026
Price: Unit price: $0.274
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Part No:1N4739A
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Part No:1N4739A
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Source:DigiKey
Part No:1N4739A
Stock:34772
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Price: Unit price: $0.26
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Source:DigiKey
Part No:1N4739A
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Part No:1N4739A
Stock:15231
Inv Date:06-11-2026
Price: Unit price: $0.26
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Price: Unit price: $4.04
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Part No:1N4739A
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Inv Date:06-10-2026
Price: Unit price: $0.899
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Part No:1N4739A
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Inv Date:06-10-2026
Price: Unit price: $0.0476
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ONSEMI 1N4739A Zener Diode Specifications:

  • Absolute Maximum Ratings: Ta = 25°C unless otherwise noted
  • Power Dissipation: 1.0 W @ TL50C, Lead Length = 3/8”
  • Derate: 6.67 mW/C above 50C
  • Operating and Storage Temperature Range: -65 to +200 C
  • Zener Voltage (VZ): Measured with the device junction in thermal equilibrium at the lead temperature (TL) at 30C ± 1C and 3/8” lead length.
  • Non-Repetitive Peak Reverse Current: Measured at 8.3 msec soak time
  • Top Mark Information: First line: ON Semiconductor Logo, Second line: Device Name (3rd to 4th characters for 1Nxx series or 4th to 6th characters for BZXyy series), Third line: Device Name (5th to 6th characters for 1Nxx series or Voltage rating for BZXyy series), Fourth line: Device Name (7th to 8th characters for 1Nxx series or Large Die identification for BZXyy series), Fifth line: Date Code (Two Digit - Six Weeks Date Code)

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Frequently Asked Questions

Where can I buy ONSEMI 1N4739A?

You can click on the BUY or RFQ button to purchase 1N4739A from an authorized ONSEMI distributor.

How do I troubleshoot issues or seek technical support for part 1N4739A?

You can download the 1N4739A datasheet or visit the ONSEMI website for support.

Who is the manufacturer of 1N4739A?

ONSEMI

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