onsemi MM3Z6V2C

Overview

MM3Z6V2C from onsemi is a 6.2 V ±5% Zener diode in SOD−323FL package, rated for 200 mW power dissipation, with 9 Ω dynamic impedance at 5 mA test current and 2.7 µA reverse leakage at 4 V. It provides precision voltage regulation in low-power analog reference and overvoltage protection circuits.

For engineers reviewing the MM3Z6V2C datasheet, pinout, applications, or equivalent options, key selection criteria include zener voltage tolerance, thermal resistance (595 °C/W), junction temperature limit (150 °C), reverse leakage at VR, and SOD−323FL footprint compatibility with high-density PCB layouts.

Technical Context

The MM3Z6V2C operates as a two-terminal voltage reference device, conducting in reverse breakdown to maintain stable 6.2 V across its terminals within ±5% tolerance. Its low 9 Ω zener impedance at IZT = 5 mA ensures minimal voltage variation under load changes.

Designed for surface-mount use on standard FR-4 PCBs with minimum land pads, it features matte tin finish, Pb-free construction, and RoHS compliance. Thermal performance is specified with RJA = 595 °C/W, requiring careful layout consideration for sustained 200 mW operation.

Key Specifications

Pinout & Package

SOD−323FL is a miniature surface-mount plastic package with gull-wing leads, 1.7 mm × 1.25 mm body size, and 0.95 mm height. It supports automated placement and reflow soldering per J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX384-B6V2 and MMBZ5234BS, the MM3Z6V2C offers the lowest thermal resistance among SOD-323 Zeners (595 °C/W), tighter production consistency due to onsemi's process control, and optimized 5 mA test point matching typical low-power reference loads.

Availability

MM3Z6V2C is available at Aetrix Electronics and suitable for industrial sensor conditioning, USB port protection, and low-power IoT node voltage reference requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.

Supply support for MM3Z6V2C 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

onsemi (Semiconductor Components Industries, LLC) is a global supplier of energy-efficient semiconductor solutions, serving automotive, industrial, cloud, medical, and IoT markets with differentiated silicon and packaging technologies.

The MM3Z series targets high-volume, space-constrained applications needing precision low-power voltage regulation; it was engineered to replace through-hole Zeners in modern SMT manufacturing while maintaining tight tolerances and thermal robustness.

FAQ

What is the nominal Zener voltage and tolerance of the MM3Z6V2C?

The MM3Z6V2C has a nominal Zener voltage of 6.2 V with a tolerance of ±5%, meaning its actual breakdown voltage falls between 5.89 V and 6.51 V when tested at I_ZT = 5 mA and T_A = 25 °C. This tolerance is confirmed in the Electrical Characteristics table of the official onsemi datasheet Rev. 3 (August 2023). The MM3Z6V2C is designed for applications where predictable, repeatable regulation within this band is required.

What package type does the MM3Z6V2C use, and what are its key mechanical dimensions?

The MM3Z6V2C uses the SOD−323FL package (Case 477AB), a miniature surface-mount outline measuring 1.7 mm × 1.25 mm with a maximum height of 0.95 mm. It features gull-wing leads and matte tin (Sn) finish. This package is documented in the Mechanical Case Outline section of the onsemi datasheet and is optimized for high-density PCB layouts and automated assembly. The MM3Z6V2C's compact footprint directly supports miniaturized designs without sacrificing thermal or electrical performance.

What is the maximum power dissipation and thermal resistance of the MM3Z6V2C?

The MM3Z6V2C has a maximum power dissipation (P_D) of 200 mW at T_A = 25 °C and a junction-to-ambient thermal resistance (R_JA) of 595 °C/W when mounted on a PCB with minimum land pad. These values are specified in the Absolute Maximum Ratings and Thermal Characteristics tables of the onsemi datasheet. Exceeding 200 mW without derating risks exceeding the 150 °C maximum junction temperature, making thermal layout critical for sustained operation of the MM3Z6V2C.

How does the MM3Z6V2C perform in terms of reverse leakage current?

The MM3Z6V2C exhibits a maximum reverse leakage current (I_R) of 2.7 µA at V_R = 4 V, as specified in the Electrical Characteristics table. This low leakage ensures minimal parasitic loading in high-impedance reference or protection circuits-such as USB data line clamping or precision ADC bias networks-where even nanoamp-level currents could degrade accuracy. This parameter is measured and guaranteed for every MM3Z6V2C unit per onsemi's production test flow.

Is the MM3Z6V2C RoHS compliant and lead-free?

Yes, the MM3Z6V2C is Pb-free and RoHS compliant, as explicitly stated in the Features section and confirmed in the Ordering Information of the onsemi datasheet. Its matte tin (Sn) finish and halogen-free molding compound meet Directive 2011/65/EU requirements. This compliance is verified through onsemi's material declaration process and applies to all units shipped under standard ordering codes. Designers can confidently specify the MM3Z6V2C for global commercial and industrial products requiring environmental certification.