Diodes Incorporated BZX84C6V8W-7

Overview

BZX84C6V8W-7 from Diodes Incorporated is a 6.8 V, 200 mW surface-mount Zener diode in SOT-323 package, with nominal zener voltage 6.8 V (min 6.4 V, max 7.2 V at I_ZT = 5 mA), zener impedance 15 Ω at 5 mA, and reverse current ≤2.0 µA at 4.0 V, used for precision voltage regulation and reference in low-power analog circuits.

For engineers reviewing the BZX84C6V8W-7 datasheet, BZX84C6V8W-7 pinout, BZX84C6V8W-7 application, or BZX84C6V8W-7 equivalent, key selection criteria include zener voltage tolerance, dynamic impedance at test current, power derating above 25°C, thermal resistance (625 K/W), and RoHS-compliant green molding compound compatibility with reflow profiles.

Technical Context

This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load or supply conditions. It features planar die construction for consistent breakdown characteristics and low leakage, with temperature coefficient of +1.2 mV/°C at 5 mA enabling predictable drift compensation in reference designs.

The device is rated for continuous power dissipation of 200 mW at 25°C ambient, derating linearly to zero at 150°C junction temperature, and exhibits typical total capacitance of ~30 pF at 1 V reverse bias - suitable for DC and low-frequency regulation, not RF bypassing.

Key Specifications

Pinout & Package

Package: SOT-323 - ultra-small surface-mount plastic case (2.0 × 1.25 × 0.9 mm), lead-free matte tin plating, moisture sensitivity level 1, UL 94V-0 rated.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5235BS-7-F and BZX84-C6V8LT1G, BZX84C6V8W-7 offers optimal balance of ultra-compact size, industry-standard tolerance, and verified green material compliance - ideal for high-volume consumer and industrial designs where footprint and RoHS adherence are primary drivers.

Availability

BZX84C6V8W-7 is available at Aetrix Electronics and suitable for portable power management, industrial sensor signal conditioning, and automotive body control modules requiring stable component supply, consistent parametric performance, and full traceability through J-STD-020D Level 1 moisture handling.

Supply support for BZX84C6V8W-7 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' standard Zener diode product line, engineered for precision voltage regulation in space-constrained, low-power applications with strict environmental compliance requirements.

FAQ

What is the maximum reverse voltage this diode can withstand before breakdown?

The BZX84C6V8W-7 is specified for zener breakdown at 6.8 V nominal, with guaranteed regulation between 6.4 V and 7.2 V at 5 mA. Its absolute maximum non-destructive reverse voltage is not defined separately - operation beyond 7.2 V at currents exceeding the 200 mW power limit risks thermal runaway and permanent degradation.

Can this Zener diode be used in AC signal clipping applications?

No - the BZX84C6V8W-7 is optimized for DC voltage regulation and reference use. Its relatively high zener impedance (15 Ω) and limited peak pulse current rating make it unsuitable for fast AC waveform clipping; dedicated low-capacitance, low-Z_Z clipping diodes like BAS16 or 1N4148 are preferred for such roles.

Is the SOT-323 package compatible with standard reflow soldering profiles?

Yes - the SOT-323 package uses lead-free matte tin plating and is rated for moisture sensitivity level 1 per J-STD-020D, meaning it can be stored indefinitely at ≤30°C/60% RH and processed using standard Pb-free reflow profiles (peak 260°C, 10–30 sec above 217°C) without baking or special handling.

How does the +1.2 mV/°C temperature coefficient affect long-term stability?

The +1.2 mV/°C coefficient means the zener voltage increases by approximately 0.018% per °C rise from 25°C. Over a 50°C ambient swing (−25°C to +25°C), this results in ~60 mV shift - acceptable for non-critical references but requires compensation (e.g., series thermistor) in metrology-grade applications demanding <0.01% drift.