NXP Semiconductors BZX284-C2V7,115

Overview

BZX284-C2V7,115 from NXP Semiconductors is a ±5% tolerance Zener voltage regulator diode in a SOD110 ceramic SMD package, rated for 2.65–2.75 V nominal Zener voltage at 5 mA test current, 400 mW total power dissipation, and 300–450 Ω differential resistance - used for low-power voltage reference and overvoltage protection in space-constrained consumer and industrial PCBs.

For engineers reviewing the BZX284-C2V7,115 datasheet, BZX284-C2V7,115 pinout, BZX284-C2V7,115 application, or BZX284-C2V7,115 equivalent, key selection criteria include its 2.7 V regulation tolerance, 20 μA reverse leakage at 1 V, −2.0 mV/K temperature coefficient, SOD110 footprint compatibility, and suitability for biasing, clamping, and reference circuits where precision and thermal stability are moderate priorities.

Technical Context

This device operates as a two-terminal silicon Zener diode with controlled reverse-breakdown behavior, optimized for stable DC voltage regulation under low-current conditions (IZtest = 5 mA). Its SOD110 package enables surface-mount integration with minimal board area and thermal resistance of 315 K/W junction-to-ambient.

The BZX284-C2V7,115 exhibits a negative temperature coefficient (−2.0 mV/K) typical for low-voltage Zeners, meaning its breakdown voltage decreases slightly with rising temperature - a critical factor when designing across −65 °C to +150 °C storage and operating ranges.

Key Specifications

Pinout & Package

SOD110 is a two-terminal surface-mount ceramic package with cathode marked by a band on one end. The device has no active pins - only an anode and cathode terminal, with polarity critical for correct Zener operation in reverse-bias configuration.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX284-C2V7,115, MMBZ5221BS-7-F offers lower voltage but reduced power margin and thermal performance, while BZX384-C2V7 matches voltage tolerance in a smaller package at the cost of 25% lower power rating - making the original optimal for balanced size, stability, and dissipation in mid-volume industrial designs.

Availability

BZX284-C2V7,115 is available at Aetrix Electronics and suitable for overvoltage clamping, low-voltage reference generation, power rail monitoring, and LED bias stabilization requiring stable component supply and long-term obsolescence management.

Supply support for BZX284-C2V7,115 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 applications.

The BZX284 series belongs to NXP's discrete voltage regulator portfolio, designed specifically for reliable, low-power Zener regulation in space-constrained SMD applications where ceramic package robustness and tight E24 voltage coverage are essential.

FAQ

What is the nominal Zener voltage of the BZX284-C2V7,115 and how is it tested?

The BZX284-C2V7,115 has a nominal Zener voltage of 2.7 V, with a guaranteed range of 2.65 V to 2.75 V measured at a test current of 5 mA. This specification is verified per NXP's product data sheet under standard conditions (T_j = 25 °C), and the ±5% tolerance reflects manufacturing spread across the E24 voltage series. The BZX284-C2V7,115 achieves this regulation via controlled silicon junction breakdown characteristics.

Does the BZX284-C2V7,115 have polarity markings, and how is it oriented on PCB?

Yes, the BZX284-C2V7,115 uses a cathode band marking on the SOD110 package - a visible line near one end indicating the cathode terminal. During PCB layout, the cathode must connect to the higher-potential node (e.g., regulated rail), and the anode to ground or lower potential to enable proper reverse-bias Zener operation. Misorientation will result in forward conduction only, preventing regulation.

What is the maximum continuous reverse current the BZX284-C2V7,115 can handle at 25 °C?

At 25 °C ambient, the BZX284-C2V7,115 supports a maximum continuous Zener current of approximately 148 mA, calculated from its 400 mW total power dissipation rating divided by its nominal 2.7 V Zener voltage. Derating is required above 25 °C per the 315 K/W junction-to-ambient thermal resistance - for example, at 70 °C ambient, usable power drops to ~275 mW, limiting I_Z to ~102 mA. This value is critical for sizing series resistors in BZX284-C2V7,115-based regulator circuits.

How does the temperature coefficient of the BZX284-C2V7,115 affect its regulation accuracy across temperature?

The BZX284-C2V7,115 has a typical temperature coefficient of −2.0 mV/K at 5 mA, meaning its Zener voltage decreases by about 2 mV per degree Celsius rise. Over a −40 °C to +85 °C operating range, this introduces up to ±250 mV of drift from nominal 2.7 V - a key design consideration for precision references. For tighter stability, designers may pair the BZX284-C2V7,115 with compensation networks or select higher-voltage Zeners with positive tempcos to offset drift.

Is the BZX284-C2V7,115 RoHS compliant and what is its moisture sensitivity level (MSL)?

Yes, the BZX284-C2V7,115 is RoHS compliant per NXP's product documentation and EU Directive 2011/65/EU. It carries a Moisture Sensitivity Level (MSL) of 1 - meaning it is not moisture-sensitive and may be stored indefinitely at ambient conditions without baking or dry-pack requirements prior to reflow soldering. This simplifies handling and eliminates MSL-related process constraints in manufacturing for the BZX284-C2V7,115.