Diodes Incorporated SMAZ6V2-13-F

Overview

SMAZ6V2-13-F from Diodes Incorporated is a 1.0W surface-mount Zener diode with a nominal zener voltage of 6.2 V (±5% tolerance), 2.0 mA test current, 200 Ω maximum zener impedance at IZT, and 3.0 µA maximum reverse leakage at 5.0 V. It uses an SMA package with cathode band polarity and is rated for operation from –65 °C to +150 °C, commonly used in voltage regulation and overvoltage protection circuits for power supplies and interface clamping.

For engineers reviewing the SMAZ6V2-13-F datasheet, SMAZ6V2-13-F pinout, SMAZ6V2-13-F application, or SMAZ6V2-13-F equivalent, key selection criteria include zener voltage accuracy, thermal resistance (RθJA = 100 °C/W), power derating above +50 °C, and compliance with RoHS, halogen-free, and antimony-free "Green" requirements.

Technical Context

This Zener diode operates in reverse breakdown to maintain stable reference voltage under varying load and temperature conditions. Its 6.2 V nominal regulation voltage is specified at 2.0 mA test current, with dynamic impedance of ≤200 Ω at that point and ≤150 Ω at higher currents (e.g., 10–100 mA), supporting precision clamping in low-power analog and digital interfaces.

The device features a molded plastic SMA package with UL 94V-0 flammability rating, matte tin lead finish, and moisture sensitivity level 1. Thermal performance is characterized by RθJT = 30 °C/W and RθJA = 100 °C/W on standard FR-4 PCB layout, enabling reliable operation up to 150 °C junction temperature.

Key Specifications

Pinout & Package

Package: SMA (Surface Mount Assembly), molded plastic case with UL 94V-0 rating; dimensions: 4.60 mm × 2.92 mm × 1.63 mm (L × W × H); cathode identified by band marking; weight ≈ 0.064 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C6V2-7-F and 1N4735A, SMAZ6V2-13-F uniquely balances 1.0 W SMT power handling, industry-standard SMA footprint, and low thermal resistance-making it optimal for production-grade voltage regulation and transient protection where reliability and manufacturability are prioritized.

Availability

SMAZ6V2-13-F is available at Aetrix Electronics and suitable for voltage reference, ESD protection, overvoltage detection, and signal-level translation applications requiring stable component supply and full RoHS/Green compliance.

Supply support for SMAZ6V2-13-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, compliant components for industrial, computing, and consumer markets.

The SMAZ series belongs to Diodes' surface-mount Zener diode product line, designed specifically for automated assembly in power management and protection circuits where consistent regulation, thermal robustness, and environmental compliance are essential.

FAQ

What is the maximum reverse voltage (V_R) at which leakage current is guaranteed?

The datasheet specifies maximum reverse leakage current of 3.0 µA at V_R = 5.0 V. This value is measured under standard conditions (T_A = +25 °C) and reflects the diode's blocking capability below its nominal zener voltage - critical for low-power bias networks where leakage must remain negligible.

Can SMAZ6V2-13-F be used in parallel for higher power dissipation?

No - Zener diodes exhibit negative temperature coefficient and mismatched V_Z tolerances, causing current hogging when paralleled. For >1.0 W applications, use a single higher-rated device or implement active regulation; parallel operation risks thermal runaway and premature failure.

Is the SMAZ6V2-13-F suitable for automotive applications?

Yes - its –65 °C to +150 °C operating temperature range, AEC-Q200-untested but process-aligned construction, and RoHS/halogen-free compliance meet baseline requirements for non-safety-critical automotive subsystems such as infotainment power rails and sensor interface protection.

How does the 100 °C/W R_θJA value translate to real-world PCB layout?

On a standard FR-4 board (1″ × 0.85″, 1 oz copper), R_θJA = 100 °C/W means a 1.0 W dissipation raises junction temperature by 100 °C above ambient. To stay within 150 °C max T_J, ambient must remain ≤50 °C - achievable with moderate airflow or localized copper pour for heat spreading.