Diodes Incorporated BZX84C6V8S-7-F

Overview

BZX84C6V8S-7-F from Diodes Incorporated is a 6.8 V, 200 mW surface-mount Zener diode in SOT-363 package, rated for 5 mA test current with 15 Ω dynamic impedance at 1 kHz and ±2.0 V reverse voltage tolerance at 2 µA leakage. It provides precision voltage regulation in low-power biasing and reference circuits, such as sensor excitation and analog front-end stabilization.

For engineers reviewing the BZX84C6V8S-7-F datasheet, BZX84C6V8S-7-F pinout, BZX84C6V8S-7-F application, or BZX84C6V8S-7-F equivalent, key selection criteria include zener voltage tolerance (±0.4 V), temperature coefficient (+1.2 to +4.5 mV/°C), thermal resistance (625 °C/W), and SOT-363 footprint compatibility with high-density PCB layouts.

Technical Context

This dual-anode, single-cathode Zener diode operates in reverse breakdown mode with tightly controlled nominal voltage of 6.8 V (min 6.4 V, max 7.2 V) at I_ZT = 5 mA. Its low 15 Ω Zener impedance at 1 kHz ensures stable regulation under small-signal load variations.

The device uses planar die construction and is qualified for operation from –65 °C to +150 °C. Its 200 mW power dissipation is derated linearly above 25 °C ambient per the published curve, with R_θJA = 625 °C/W on FR4 board using recommended pad layout.

Key Specifications

Pinout & Package

SOT-363 package: 6-pin, dual-anode configuration with common cathode connection. Molded plastic case (UL 94V-0), lead-free matte tin plating, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5235BS-7-F and BZX84C6V8LT1G, BZX84C6V8S-7-F delivers tighter voltage tolerance and lower dynamic impedance in the same compact dual-anode SOT-363 footprint, making it optimal for multi-rail reference designs requiring minimal layout change.

Availability

BZX84C6V8S-7-F is available at Aetrix Electronics and suitable for portable sensor biasing, industrial analog front-end design, and USB-C power negotiation requiring stable component supply across high-mix, low-volume production runs.

Supply support for BZX84C6V8S-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, industry-qualified components for automotive, industrial, and consumer markets.

The BZX84C series belongs to Diodes' precision Zener diode product line, engineered for stable voltage reference and clamping in space-constrained, thermally demanding applications.

FAQ

What is the maximum reverse current at 4.0 V for BZX84C6V8S-7-F?

The maximum reverse leakage current is 2.0 µA at V_R = 4.0 V and T_A = 25 °C, as specified in the Electrical Characteristics table. This value remains stable up to 85 °C ambient, with typical increase to 8 µA at 125 °C per characterization data.

Can BZX84C6V8S-7-F be used in parallel for higher power handling?

No - due to process variation in Zener voltage, paralleling units causes current hogging and thermal runaway. The device is rated for 200 mW total dissipation; higher power requires a single higher-rated Zener or active regulation.

Is the SOT-363 package compatible with standard reflow profiles?

Yes - the SOT-363 package is qualified for lead-free reflow per J-STD-020D Level 1, with peak temperature up to 260 °C. No pre-bake is required due to its moisture sensitivity level 1 rating.

How does temperature affect the 6.8 V Zener voltage?

The temperature coefficient ranges from +1.2 to +4.5 mV/°C at I_ZT = 5 mA. Over –40 °C to +85 °C, this results in a total shift of +0.15 V to +0.38 V, requiring compensation in metrology-grade references.