Diodes Incorporated LZ52C6V2W

Overview

LZ52C6V2W from Diodes Incorporated is a surface-mount Zener diode with a nominal reverse breakdown voltage of 6.2 V, ±2% tolerance, 500 mW power dissipation in a 1206 package, and low leakage current (≤0.1 µA at 2.0 V reverse bias). It serves as a precision voltage reference or overvoltage clamp in power supply regulation, signal conditioning, and ESD protection circuits.

For engineers reviewing the LZ52C6V2W datasheet, LZ52C6V2W pinout, LZ52C6V2W application, or LZ52C6V2W equivalent, key selection criteria include Zener voltage accuracy (6.08–6.32 V), dynamic impedance (10 Ω at 5 mA), thermal resistance (300 °C/W), and RoHS-compliant "Green" construction-critical for compact, thermally constrained, and environmentally regulated designs.

Technical Context

This Zener diode operates in reverse-biased avalanche mode to maintain stable voltage across its terminals under varying load or line conditions. Its silicon epitaxial planar structure ensures tight V_Z tolerance and low temperature coefficient, while the 1206 SMD package supports automated assembly and moderate power handling.

The device is characterized at 25 °C with test current I_ZT = 5 mA, exhibits Zener impedance Z_ZT = 10 Ω, and maintains reverse leakage <0.1 µA up to VR = 2.0 V-enabling reliable clamping and reference stability in low-current bias networks.

Key Specifications

Pinout & Package

Package: 1206 surface-mount ceramic-body package with cathode indicated by color band; terminals are lead-free plated; weight ≈10 mg.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C6V2 and MMSZ5232B, LZ52C6V2W offers superior voltage accuracy (±2% vs. ±5%), lower leakage (0.1 µA vs. ≥1 µA), and optimized thermal performance (300 °C/W) in the 1206 footprint-making it preferred for precision, low-power, and high-reliability industrial designs.

Availability

LZ52C6V2W is available at Aetrix Electronics and suitable for power supply clamping, microcontroller I/O protection, precision voltage reference, and industrial sensor biasing requiring stable component supply and full RoHS 3 compliance.

Supply support for LZ52C6V2W 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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

LZ52C6V2W belongs to the LZ52C series of surface-mount Zener diodes designed specifically for high-accuracy, low-leakage voltage regulation and protection in compact, thermally demanding, and environmentally compliant applications.

FAQ

What is the maximum reverse voltage rating before breakdown for LZ52C6V2W?

The LZ52C6V2W has a nominal Zener voltage of 6.2 V, with guaranteed breakdown occurring between 6.08 V and 6.32 V at I_ZT = 5 mA. It is not rated for sustained reverse voltage above 6.32 V; operation beyond this range risks thermal runaway if power dissipation exceeds 500 mW.

Can LZ52C6V2W be used in place of a 5.1 V Zener diode?

No-LZ52C6V2W is specified for 6.2 V operation and is not interchangeable with 5.1 V Zeners like LZ52C5V1W. Substituting would raise the clamping or reference voltage by >1 V, potentially causing overvoltage stress on downstream components or incorrect comparator thresholds.

Is LZ52C6V2W suitable for automotive applications?

Yes-its operating temperature range (-65 °C to +175 °C), RoHS 3 and "Green" compliance, and stable Zener characteristics make it suitable for non-safety-critical automotive subsystems such as body control modules and infotainment power rails, provided thermal design accommodates its 300 °C/W R_θJA.

Does LZ52C6V2W require a series current-limiting resistor in all applications?

Yes-in shunt regulator or clamping configurations, a series resistor is mandatory to limit current through the diode and prevent exceeding its 500 mW power rating. The resistor value must be selected based on worst-case input voltage, load current, and desired Zener current (typically 1–10 mA).