Nexperia USA Inc. BZX84-A2V7,215

Overview

BZX84-A2V7,215 from Nexperia is a ±1 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, designed for precision low-voltage reference and overvoltage protection in space-constrained circuits. It delivers 2.7 V nominal breakdown at 5 mA, with 600 Ω max differential resistance, ≤0.9 V forward voltage at 10 mA, and supports 250 mW steady-state dissipation on FR4 PCB.

For engineers reviewing the BZX84-A2V7,215 datasheet, BZX84-A2V7,215 pinout, BZX84-A2V7,215 application, or BZX84-A2V7,215 equivalent, this part serves as a stable 2.7 V shunt reference in power supply feedback loops, microcontroller reset circuits, and analog sensor biasing where tight voltage tolerance and low thermal drift are required.

Technical Context

This device operates as a two-terminal shunt regulator: reverse-biased to maintain a stable 2.7 V across its cathode–anode terminals when current exceeds the knee threshold (~1 mA). Its temperature coefficient is -3.5 mV/K at 5 mA, indicating predictable negative drift with rising junction temperature.

The SOT23 package enables surface-mount integration with R_th(j-a) = 500 K/W in free air and R_th(j-sp) = 330 K/W to solder point, supporting reliable thermal management in compact DC/DC converter feedback networks and I/O clamp circuits.

Key Specifications

Pinout & Package

Package: SOT23 (TO-236AB), 3-lead surface-mount plastic package with standard footprint per Figure 12 (reflow) and Figure 13 (wave soldering); body dimensions 2.9 mm × 1.3 mm × 1.0 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5221BS-7-F and BZX84-C2V7-TP, BZX84-A2V7,215 provides tighter tolerance and lower dynamic impedance-critical for closed-loop regulation and precision biasing-while maintaining full SOT23 footprint compatibility and thermal performance.

Availability

BZX84-A2V7,215 is available at Aetrix Electronics and suitable for power supply feedback reference, microcontroller reset circuit, and analog sensor biasing requiring stable component supply with guaranteed long-term continuity and full traceability.

Supply support for BZX84-A2V7,215 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

Nexperia is a global semiconductor expert delivering high-performance, reliable discrete, logic, and MOSFET devices optimized for efficiency and miniaturization in consumer, industrial, and communications systems.

BZX84-A2V7,215 belongs to the BZX84 series of low-power Zener regulators, engineered specifically for precision voltage reference and overvoltage protection in space-constrained, cost-sensitive SMT applications.

FAQ

What is the maximum continuous reverse current this diode can handle at 25 °C ambient?

The BZX84-A2V7,215 supports up to 200 mA forward current per Absolute Maximum Ratings, but its practical reverse current is limited by power dissipation. At 25 °C ambient on FR4 PCB, 250 mW rating permits ~93 mA continuous reverse current (250 mW ÷ 2.7 V), assuming negligible forward drop and no thermal derating.

Can this device be used in a bidirectional ESD protection configuration?

Yes-by connecting anode to ground and cathode to the protected line, it clamps positive transients to ~2.7 V above ground; adding a second identical device anode-to-line/cathode-to-ground enables symmetric ±2.7 V clamping, leveraging its 40 W non-repetitive peak rating for IEC 61000-4-2 compliance.

How does the -3.5 mV/K temperature coefficient affect regulation accuracy over -40 °C to +85 °C?

Across that 125 K range, the coefficient induces ~-438 mV total drift (−3.5 mV/K × 125 K), shifting V_Z from ~2.73 V at −40 °C to ~2.29 V at +85 °C. This must be accounted for in systems requiring stable reference over temperature-e.g., by selecting a higher nominal V_Z or adding compensation.

Is the "n.c." pin electrically isolated or internally bonded?

Pin 2 is unconnected internally-no bond wire or die attachment exists. It is fully isolated and must remain un-soldered and un-traced on PCB layouts; any connection violates the specified SOT23 mechanical and thermal design, risking parametric shift or premature failure.