onsemi BZX84C8V2_D87Z

Overview

BZX84C8V2_D87Z from ON Semiconductor is a 5% tolerance, 8.2 V Zener diode in SOT-23 package, rated for 250 mW power dissipation at 25°C ambient, with 15 Ω dynamic impedance at 5 mA test current and 0.7 µA maximum reverse leakage at 5.0 V. It provides precision voltage regulation in low-power analog reference and overvoltage protection circuits.

For engineers reviewing the BZX84C8V2_D87Z datasheet, pinout, applications, or equivalent options, key selection criteria include its 8.2 V nominal Zener voltage, ±5% tolerance, 135 pF capacitance at 0 V, temperature coefficient of +3.2 mV/°C, and suitability for space-constrained PCBs requiring stable low-current regulation.

Technical Context

This device operates as a silicon planar Zener diode optimized for voltage reference and clamping functions in DC bias networks. Its design centers on stable breakdown behavior under reverse bias, with specified Zener voltage measured at 5.0 mA, 1.0 mA, and 20 mA test currents to support varying load conditions.

The BZX84C8V2_D87Z exhibits a positive temperature coefficient (+3.2 mV/°C) above 5 V, enabling predictable drift compensation in temperature-sensitive references. Its 135 pF junction capacitance at 0 V and 1.0 MHz makes it suitable for low-frequency stabilization but not RF bypass applications.

Key Specifications

Pinout & Package

Package: SOT-23 (TO-236AB), surface-mount, 3-terminal plastic package with cathode-marked lead.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5236BS-7-F and BZX84-C8V2,115, the BZX84C8V2_D87Z offers the lowest Zener impedance (6 Ω) and tightest capacitance (135 pF), making it optimal for high-precision, low-noise analog references where load regulation and signal integrity are critical.

Availability

BZX84C8V2_D87Z is available at Aetrix Electronics and suitable for industrial sensor biasing, microcontroller reset circuits, LED current regulation, and ESD protection clamps requiring stable component supply and consistent parametric performance across manufacturing lots.

Supply support for BZX84C8V2_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 supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The BZX84 series belongs to ON Semiconductor's general-purpose Zener diode product line, engineered for cost-effective, reliable voltage regulation and clamping in space-constrained, low-power electronic systems.

FAQ

What is the nominal Zener voltage and tolerance of BZX84C8V2_D87Z?

The BZX84C8V2_D87Z has a nominal Zener voltage of 8.2 V with a ±5% tolerance, meaning its actual breakdown voltage falls between 7.7 V and 8.8 V when tested at 20 mA. This tolerance band is confirmed in the Electrical Characteristics table of the official ON Semiconductor datasheet Rev. 1.10, and applies directly to the BZX84C8V2_D87Z variant as part of the BZX84C3V3–BZX84C33 family.

What is the maximum power dissipation rating for BZX84C8V2_D87Z?

The BZX84C8V2_D87Z is rated for 250 mW power dissipation at an ambient temperature of 25°C when mounted on a standard FR-4 PCB (76.2 mm × 114.3 mm). Derating is required above 25°C per the specified junction-to-ambient thermal resistance of 465°C/W, and the absolute maximum junction temperature is 150°C. This rating is explicitly stated in the Absolute Maximum Ratings table for the BZX84C8V2_D87Z.

Does BZX84C8V2_D87Z have a defined temperature coefficient, and what is its value?

Yes, the BZX84C8V2_D87Z has a documented temperature coefficient of +3.2 mV/°C at I_Z = 5.0 mA, indicating a positive linear drift in Zener voltage with rising temperature. This value is listed in the Electrical Characteristics table under "DVZ / Dt at 5.0 mA" and is specific to the BZX84C8V2_D87Z - not extrapolated from adjacent voltages. It enables accurate thermal modeling in precision reference designs.

What is the reverse leakage current specification for BZX84C8V2_D87Z at 5.0 V?

The reverse leakage current (I_R) for BZX84C8V2_D87Z is specified as a maximum of 0.7 µA at V_R = 5.0 V and T_A = 25°C. This parameter appears in the second Electrical Characteristics table under the BZX84C8V2 row and confirms low standby power draw, critical for battery-operated bias networks where quiescent current must remain sub-microamp.

Is BZX84C8V2_D87Z compatible with standard SOT-23 footprints used for other Zener diodes?

Yes, the BZX84C8V2_D87Z uses the industry-standard SOT-23 (TO-236AB) package with verified pinout: Pin 1 = Anode, Pin 2 = Cathode, Pin 3 = No-connect. Its mechanical dimensions and land pattern match JEDEC MO-215, ensuring compatibility with automated placement equipment and existing SOT-23 footprints for Zener diodes like the BZX84C5V1 or MMBZ5231BS.