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BZV55-B18,115

18V 500mW Zener diode, 2%, miniMELF (SOD-80C)

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Manufacturer Part：

BZV55-B18,115

Package：

miniMELF (SOD-80C)

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Description

Product Overview

The BZV55-B18,115 from NXP is an 18V 500mW Zener diode with 2% tolerance in a miniMELF package for voltage regulation and reference applications.

Key Specifications

Package miniMELF (SOD-80C)

Features

  • See datasheet for complete specifications
  • Industry-standard package

Applications

  • Industrial control
  • Consumer electronics
  • Communication equipment
  • Automotive electronics

The BZV55-B18,115 from NXP is an 18V 500mW Zener diode with 2% tolerance in a miniMELF package for voltage regulation and reference applications.

The BZV55-B18,115 is an 18V 500mW Zener diode from Nexperia (formerly NXP) in miniMELF (SOD-80C, LL-34) package, with 2% tolerance (B suffix). The Zener diode operates in reverse breakdown: when reverse-biased above the Zener voltage (VZ = 18V +/- 2%), the diode conducts and maintains a nearly constant voltage across its terminals regardless of current changes. The Zener impedance (ZZ) is 25 ohms typical at IZT = 5mA, meaning a 1mA current change produces only 25mV voltage change (0.14% regulation). The temperature coefficient is approximately +9mV/C for 18V Zener (positive, as Zeners above 5.6V have positive tempco). The 500mW power rating at 25C ambient limits the maximum Zener current: IZ(max) = 500mW / 18V = 27.8mA. A series resistor (RS) must be used: RS = (VIN – VZ) / IZ, where IZ is chosen to be 5-10mA for good regulation plus the load current. The miniMELF (Miniature MELF) package is a cylindrical glass-body SMD package, 3.5mm long and 1.5mm diameter, providing better voltage stability than flat SMD packages because the glass body has lower mechanical stress on the die. The -B suffix specifies 2% tolerance (vs 5% for C suffix). The ,115 suffix specifies tape-and-reel (52mm, 5000 pcs). The 115 is the Nexperia packing code. Applications include: voltage reference, voltage clamping, overvoltage protection, and level shifting.

Pin Name Type Function
1 Cathode Power Cathode (marked with band, connects to positive rail for regulation)
2 Anode Power Anode (connects to ground for positive regulation)
  • Industrial control
  • Consumer electronics
  • Communication equipment
  • Automotive electronics
    • Manufacturer Part Number Package Notes
    Nexperia BZV55-B18,115 miniMELF Same device, Nexperia brand
    Nexperia BZV55-C18,115 miniMELF 5% tolerance version (C suffix)
    ON Semi BZV55B18-7 miniMELF 18V 2% Zener, ON Semi brand
    Vishay BZV55-B18-GS08 miniMELF 18V 2% Zener, Vishay brand
    Diodes Inc BZV55C18-7 miniMELF 18V 5% Zener, Diodes Inc brand
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