Diodes Incorporated BZX84B6V2Q-7-F

Overview

BZX84B6V2Q-7-F from Diodes Incorporated is an AEC-Q101-qualified surface-mount precision Zener diode with nominal 6.2 V zener voltage, ±2% tolerance, 350 mW power dissipation, and 10 Ω dynamic impedance at 5 mA test current. It operates across –65 °C to +150 °C and is used for voltage regulation and reference in automotive body control modules, sensor biasing circuits, and power supply feedback networks.

For engineers reviewing the BZX84B6V2Q-7-F datasheet, BZX84B6V2Q-7-F pinout, BZX84B6V2Q-7-F application, or BZX84B6V2Q-7-F equivalent, key selection criteria include its tight 6.08–6.32 V zener range, low 10 Ω Z_ZT, 3.7 mV/°C temperature coefficient, and SOT23 automotive-grade qualification.

Technical Context

This Zener diode functions as a two-terminal voltage reference device operating in reverse breakdown mode. Its 6.2 V nominal zener voltage is specified at I_ZT = 5 mA with 10 Ω impedance (Z_ZT) and 150 Ω knee impedance (Z_ZK) at I_ZK = 1 mA, ensuring stable regulation under varying load conditions.

The device features a positive temperature coefficient of +3.7 mV/°C above 6 V, enabling predictable thermal drift compensation in reference designs. It is rated for 350 mW dissipation under ambient-temperature terminal conditions and qualified to AEC-Q101 for automotive reliability.

Key Specifications

Pinout & Package

Package: SOT23 - three-terminal plastic surface-mount package with lead-free matte tin plating, moisture sensitivity level 1, and UL 94V-0 flammability rating.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5234BS-7-F and BZX84C6V2-7-F, BZX84B6V2Q-7-F delivers tighter voltage tolerance, higher power capability, and automotive-grade reliability-making it the sole choice for safety-critical or thermally demanding vehicle subsystems.

Availability

BZX84B6V2Q-7-F is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and medical portable diagnostics requiring stable component supply, full RoHS 3 compliance, and AEC-Q101 traceability.

Supply support for BZX84B6V2Q-7-F 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

The BZX84 series belongs to Diodes' precision Zener diode product line, engineered specifically for high-reliability voltage regulation and reference in automotive, industrial, and medical applications where stability, low noise, and qualification rigor are essential.

FAQ

What is the maximum reverse voltage (V_R) before significant leakage occurs?

The BZX84B6V2Q-7-F exhibits ≤3.0 µA reverse current at 4.0 V, per datasheet specifications. At 5.0 V, leakage remains below 10 µA. Operation above 4.0 V approaches the zener knee region, where controlled breakdown begins-designers must limit applied reverse voltage to avoid exceeding the 350 mW power limit during transient events.

Can this Zener diode be used in series or parallel configurations?

Series connection is viable for higher reference voltages, provided current matching and thermal coupling are managed. Parallel use is strongly discouraged due to mismatched zener voltages and thermal runaway risk-even with matched units, slight V_Z differences cause current hogging. For higher current, use a single higher-power Zener or add an external pass transistor.

Is the SOT23 pinout consistent across all BZX84 variants?

Yes-the SOT23 package uses identical pinout: Pin 1 = Anode, Pin 2 = Cathode, Pin 3 = NC (mechanical tie-bar). This layout is standardized across the entire BZX84B and BZX84C families and verified in Diodes Incorporated's package outline DS36159 Rev. 3, page 4.

How does the +3.7 mV/°C temperature coefficient impact long-term reference stability?

The +3.7 mV/°C TC means V_Z increases by ~0.06% per °C rise from 25 °C. Over a –40 °C to +125 °C range, total drift is ~±0.56 V (±9%), but combined with ±2% initial tolerance, worst-case reference deviation remains within ±1.2 V-acceptable for non-precision biasing where absolute accuracy is secondary to repeatability.