onsemi BZX84C6V2_D87Z

Overview

BZX84C6V2_D87Z from ON Semiconductor (formerly Fairchild) is a 6.2 V, ±5% tolerance surface-mount Zener diode in SOT-23 package, rated for 250 mW power dissipation at 25°C ambient, with 6 Ω dynamic impedance at 20 mA and 185 pF capacitance at 0 V reverse bias - used for voltage regulation and overvoltage protection in low-power analog and digital supply rails.

For engineers reviewing the BZX84C6V2_D87Z datasheet, pinout, applications, or equivalent options, key selection criteria include zener voltage tolerance, dynamic impedance at specified test current, thermal resistance (R_JA = 465°C/W), reverse leakage at 4.0 V, and junction temperature range (–55°C to +150°C).

Technical Context

This device operates as a precision shunt voltage regulator, maintaining stable reference voltage across its cathode-anode terminals when reverse-biased above its nominal breakdown voltage. It exhibits a positive temperature coefficient of +0.4 mV/°C at 5.0 mA, enabling predictable drift compensation in temperature-sensitive circuits.

The BZX84C6V2_D87Z is characterized at three test currents (1 mA, 5 mA, 20 mA) to support design flexibility across load conditions; its low 3 µA maximum reverse leakage at 4.0 V ensures minimal quiescent current draw in standby modes.

Key Specifications

Pinout & Package

Package: SOT-23 (TO-236AB), 3-terminal plastic surface-mount package with standard cathode marking (band). 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 regulation applications.

Compared with MMBZ5234BS-7-F and BZX84-C6V2,215, the BZX84C6V2_D87Z offers identical core regulation performance at lower cost for commercial-grade applications, with verified thermal behavior on standard FR-4 layouts and documented compatibility with legacy Fairchild/ON Semiconductor reference designs.

Availability

BZX84C6V2_D87Z is available at Aetrix Electronics and suitable for power supply monitoring, overvoltage protection, voltage reference, and signal level translation requiring stable component supply and consistent parametric performance across production batches.

Supply support for BZX84C6V2_D87Z 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

ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient power management, analog, sensors, and connectivity solutions for automotive, industrial, cloud, and IoT applications.

The BZX84 series belongs to ON Semiconductor's general-purpose Zener diode product line, designed for cost-effective, reliable voltage regulation and protection in high-volume consumer, computing, and industrial electronics.

FAQ

What is the nominal Zener voltage and tolerance of BZX84C6V2_D87Z?

The BZX84C6V2_D87Z has a nominal Zener voltage of 6.2 V with a tolerance of ±5%, meaning its actual breakdown voltage falls between 5.8 V and 6.6 V when tested at 5 mA reverse current. This tolerance is confirmed in the Electrical Characteristics table of the official ON Semiconductor datasheet Rev. 1.10. The BZX84C6V2_D87Z maintains this specification across its full operating temperature range of –55°C to +150°C.

What is the maximum power dissipation for BZX84C6V2_D87Z under standard conditions?

The BZX84C6V2_D87Z is rated for 250 mW power dissipation when mounted on a standard FR-4 PCB (76.2 mm × 114.3 mm) at an ambient temperature of 25°C. Its junction-to-ambient thermal resistance is 465°C/W, so power must be linearly derated above 25°C - for example, to ~125 mW at 75°C ambient. This rating applies only to steady-state operation; pulsed conditions require consultation with ON Semiconductor per Absolute Maximum Ratings Note 2.

Does BZX84C6V2_D87Z have a specified junction capacitance, and at what condition?

Yes, the BZX84C6V2_D87Z has a typical junction capacitance of 185 pF measured at zero applied reverse voltage (V_R = 0 V) and 1 MHz frequency, as stated in the Electrical Characteristics table. This value is critical for high-frequency circuit design, especially in ESD protection or signal-line clamping applications where excessive capacitance could degrade rise/fall times. Capacitance decreases with increasing reverse bias - e.g., to ~100 pF at 4.0 V.

What is the temperature coefficient of BZX84C6V2_D87Z, and how does it affect regulation?

The BZX84C6V2_D87Z exhibits a temperature coefficient of +0.4 mV/°C at 5.0 mA test current, indicating its Zener voltage increases predictably with rising junction temperature. This positive drift allows designers to compensate for thermal effects in precision references or select complementary components. For instance, over a 100°C span (–25°C to +75°C), the BZX84C6V2_D87Z voltage shifts by ~40 mV - a known, bounded variation that supports robust analog design without active compensation.

Is BZX84C6V2_D87Z compatible with automated SMT assembly processes?

Yes, the BZX84C6V2_D87Z uses the industry-standard SOT-23 (TO-236AB) package with defined land pattern dimensions and solder reflow profile compatibility per J-STD-020. Its moisture sensitivity level (MSL) is rated at Level 1 (unlimited floor life at ≤30°C/85% RH), making it suitable for standard reflow and wave soldering without baking. The BZX84C6V2_D87Z has been validated in high-volume manufacturing for consumer electronics and industrial controls using conventional pick-and-place equipment.