Diodes Incorporated BZX84C8V2S-7-F

Overview

BZX84C8V2S-7-F from Diodes Incorporated is a dual 200 mW surface-mount Zener diode in SOT-363 package, rated for nominal 8.2 V zener voltage (7.7–8.7 V range at 5 mA), with 15 Ω dynamic impedance at test current and 0.7 µA max reverse leakage at 5.0 V. It serves as a precision voltage reference or overvoltage clamp in low-power analog signal conditioning and power rail regulation circuits.

For engineers reviewing the BZX84C8V2S-7-F datasheet, BZX84C8V2S-7-F pinout, BZX84C8V2S-7-F application, or BZX84C8V2S-7-F equivalent, key selection criteria include zener voltage tolerance, dynamic impedance at 5 mA, thermal resistance (625 °C/W), reverse leakage at VR = 5.0 V, and SOT-363 footprint compatibility with high-density PCB layouts.

Technical Context

This dual Zener diode integrates two independent 8.2 V zener elements in a single SOT-363 package, sharing no internal connection-each anode/cathode pair operates independently. It uses planar die construction for stable breakdown characteristics and low temperature coefficient (+3.2 to +6.2 mV/°C).

Designed for operation at 5 mA test current, it delivers 15 Ω zener impedance (ZZT) and 80 Ω knee impedance (ZZK) at 1.0 mA, enabling accurate voltage regulation in low-current bias networks and feedback paths where minimal loading and predictable knee behavior are critical.

Key Specifications

Pinout & Package

SOT-363 package with six terminals: two isolated Zener diode structures (C1/A1 and C2/A2), plus two NC (no-connect) pins. Molded plastic case meets UL 94V-0 flammability rating; moisture sensitivity level 1 per J-STD-020D.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5231BS-7-F and BZX84C8V2LT1G, BZX84C8V2S-7-F uniquely delivers dual 8.2 V Zeners in the smallest possible footprint, enabling space-constrained designs requiring two independent, matched reference or clamp functions without doubling component count or layout area.

Availability

BZX84C8V2S-7-F is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB-C power delivery reference, automotive body control module wake-up circuits, and medical wearable battery monitors requiring stable component supply and consistent SOT-363 packaging.

Supply support for BZX84C8V2S-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, specializing in high-reliability, cost-optimized components for industrial, computing, and consumer markets.

The BZX84 series belongs to Diodes' precision Zener diode product line, engineered for stable voltage reference and overvoltage protection in space- and power-constrained applications where low leakage, tight tolerance, and thermal stability are essential.

FAQ

What is the maximum power dissipation for BZX84C8V2S-7-F at 70°C ambient?

At 70°C ambient, the device's power dissipation must be derated linearly from 200 mW at 25°C using the 625 °C/W thermal resistance. The allowable PD is 200 mW × (1 − (70 − 25)/625) = 140 mW. This assumes mounting on FR4 with recommended pad layout per Diodes AP02001.

Can both Zener elements in BZX84C8V2S-7-F be used simultaneously in the same circuit?

Yes - both Zener elements are electrically isolated and share no internal connection. They can operate simultaneously with independent cathode/anode connections, enabling dual-rail referencing, redundant clamping, or differential voltage stabilization without crosstalk or shared thermal coupling.

Is BZX84C8V2S-7-F compatible with lead-free reflow profiles?

Yes - it features matte tin plating over Alloy 42 leadframe and is rated for standard lead-free reflow (J-STD-020D Level 1). Its moisture sensitivity level is 1, so floor life is unlimited and baking is not required prior to assembly.

What does the "KZ7" marking code indicate on the device body?

"KZ7" is the top-side laser marking for BZX84C8V2S-7-F per Diodes' marking convention: "KZ" denotes the BZX84C Zener series, and "7" identifies the 8.2 V variant. The date code follows (e.g., "U9" = 2007, September), confirming Green Molding Compound compliance per Note 4.