NXP Semiconductors BZX284-C8V2,115

Overview

BZX284-C8V2,115 from NXP Semiconductors is a ±5% tolerance Zener voltage regulator diode in a SOD110 ceramic SMD package, rated for 8.2 V nominal working voltage at 5 mA test current, 400 mW total power dissipation, and 700 nA reverse current at 5 V reverse bias. It serves as a precision low-power voltage reference in power supply feedback paths, overvoltage protection circuits, and analog signal conditioning stages.

For engineers reviewing the BZX284-C8V2,115 datasheet, BZX284-C8V2,115 pinout, BZX284-C8V2,115 application, or BZX284-C8V2,115 equivalent, key selection criteria include its 8.04–8.36 V Zener voltage range, 20–80 Ω differential resistance at 5 mA, +4.6 mV/K temperature coefficient, SOD110 footprint compatibility, and suitability for space-constrained industrial and consumer PCBs requiring stable 8.2 V regulation.

Technical Context

The BZX284-C8V2,115 operates as a two-terminal silicon Zener diode optimized for low-current voltage regulation and reference functions. Its design centers on controlled avalanche breakdown at 8.2 V with tight ±5% tolerance, enabling predictable clamping and biasing without external active circuitry.

It exhibits a positive temperature coefficient of +4.6 mV/K at 5 mA, indicating increasing Zener voltage with junction temperature-critical for thermal drift compensation in precision references. The device's 20–80 Ω dynamic impedance ensures stable regulation under varying load currents up to 250 mA forward or transient reverse surges.

Key Specifications

Pinout & Package

Two-terminal device in SOD110 ceramic surface-mount package: anode (pin 1) and cathode (pin 2), with cathode identified by a visible mark on top surface. Mounting requires standard reflow profile for ceramic SMD components.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage regulation applications.

Compared with BZX284-B8V2,115 and MMBZ5231BS-7-F, the BZX284-C8V2,115 offers optimal balance of ceramic SOD110 reliability, 400 mW power headroom, and cost-effective ±5% tolerance for general-purpose regulation-making it preferred for industrial control and consumer electronics where absolute precision is secondary to robustness and manufacturability.

Availability

BZX284-C8V2,115 is available at Aetrix Electronics and suitable for power supply feedback loops, overvoltage protection circuits, analog reference generation, and sensor biasing applications requiring stable component supply and long-term sourcing continuity.

Supply support for BZX284-C8V2,115 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The BZX284 series was developed as a family of low-power Zener diodes targeting compact, reliable voltage regulation in space-constrained SMD applications-emphasizing ceramic package durability, wide voltage range (2.4–75 V), and dual tolerance options for cost-performance trade-offs.

FAQ

What is the Zener voltage tolerance of the BZX284-C8V2,115?

The BZX284-C8V2,115 has a ±5% Zener voltage tolerance, meaning its nominal 8.2 V working voltage is guaranteed between 7.7 V and 8.7 V at 5 mA test current. This tolerance is confirmed in Table 1 of the NXP datasheet and distinguishes it from the ±2% B-series variants. The BZX284-C8V2,115 is designed for applications where moderate regulation accuracy suffices without premium cost.

What package type does the BZX284-C8V2,115 use and what are its dimensions?

The BZX284-C8V2,115 uses the SOD110 very small ceramic SMD package, measuring 1.90 × 1.40 × 1.60 mm with cathode identification marking. Its outline is defined in the NXP package drawing dated 97-04-14. This ceramic construction provides superior thermal stability and moisture resistance compared to plastic packages, making the BZX284-C8V2,115 suitable for harsh-environment industrial PCBs.

What is the maximum power dissipation rating for the BZX284-C8V2,115?

The BZX284-C8V2,115 has a maximum total power dissipation of 400 mW at ambient temperature of 25 °C, as specified in the Limiting Values table of the NXP datasheet. This rating assumes mounting on a standard 11 × 25 × 1.6 mm PCB. Derating is required above 25 °C ambient, with thermal resistance from junction to ambient (R_{th j-a}) at 315 K/W.

How does the temperature coefficient of the BZX284-C8V2,115 affect its performance?

The BZX284-C8V2,115 has a positive temperature coefficient of +4.6 mV/K at 5 mA, meaning its Zener voltage increases by approximately 4.6 mV per degree Celsius rise in junction temperature. This behavior is documented in Figure 4 of the NXP datasheet and must be accounted for in precision reference designs where thermal drift impacts system accuracy. The BZX284-C8V2,115 is therefore best suited for applications with limited temperature swing or where drift can be calibrated out.

What is the reverse leakage current specification for the BZX284-C8V2,115 at 5 V reverse bias?

The reverse leakage current (I_R) for the BZX284-C8V2,115 is specified as 700 nA at V_R = 5 V and T_j = 25 °C, per the Electrical Characteristics table in the NXP datasheet. This ultra-low leakage supports high-impedance node stabilization and minimizes parasitic current draw in battery-operated or low-power analog circuits using the BZX284-C8V2,115 as a reference or clamp.