onsemi MM5Z2V4T1

Overview

MM5Z2V4T1 from onsemi is a 2.4 V ±0.2 V, 100 mW SOD−523 surface-mount Zener diode designed for precision low-voltage regulation and ESD protection in space-constrained circuits. It delivers 5 mA test current, 100 Ω maximum Zener impedance at I_ZT, −3.5 mV/°C temperature coefficient, and 450 pF capacitance at 0 V/1 MHz - deployed in cellular phone power rails and portable device voltage clamping.

For engineers reviewing the MM5Z2V4T1 datasheet, pinout, applications, or equivalent options, key selection criteria include its 2.4 V nominal Zener voltage with tight 2.2–2.6 V tolerance, 100 mW power rating on FR-5 board, Class 3 (＞16 kV) HBM ESD rating, SOD−523 package footprint (1.20 mm × 0.80 mm × 0.70 mm), and cathode/anode terminal polarity confirmed by marking "00" and physical pin 1 identification.

Technical Context

The MM5Z2V4T1 operates as a two-terminal voltage reference device, conducting in reverse breakdown to clamp or regulate voltage at 2.4 V with minimal dynamic impedance. Its thermal design supports junction temperatures from −65°C to +150°C, and it meets MSL 1 reflow requirements up to 260°C.

Electrical behavior is defined at 25°C ambient: reverse leakage is ≤1.0 µA at 1.0 V, forward voltage is ≤0.9 V at 10 mA, and Zener impedance rises to 1000 Ω at I_ZK = 100 µA - indicating stable regulation only above threshold current.

Key Specifications

Pinout & Package

SOD−523 package: ultra-compact 1.20 mm × 0.80 mm body, 0.70 mm height, matte tin-plated leads, void-free thermoset epoxy (UL 94 V−0), MSL 1 compliant. Mounting position unrestricted.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX584C2V4 and MMSZ4678, the MM5Z2V4T1 uniquely combines ultra-small SOD−523 size, guaranteed 16 kV HBM ESD immunity, and 450 pF capacitance - making it optimal for miniaturized consumer electronics where board area, ESD resilience, and high-frequency performance are jointly constrained.

Availability

MM5Z2V4T1 is available at Aetrix Electronics and suitable for cellular phones, handheld portables, and high-density PC boards requiring stable component supply with consistent SOD−523 packaging and traceable lot-level compliance.

Supply support for MM5Z2V4T1 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 (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.

The MM5Z2V4T1 belongs to onsemi's MM5Z series of miniature Zener regulators, engineered specifically for voltage clamping and ESD protection in space-constrained portable electronics - emphasizing small outline, high reliability, and process-controlled parametric consistency.

FAQ

What is the exact Zener voltage tolerance of MM5Z2V4T1 at 5 mA test current?

The MM5Z2V4T1 has a guaranteed Zener voltage range of 2.2 V minimum to 2.6 V maximum at I_ZT = 5 mA and T_A = 25°C, with 2.4 V as the nominal value. This ±0.2 V tolerance (±8.3%) is specified in the Electrical Characteristics table on page 3 of the official MM5Z2V4T1/D datasheet and applies strictly to the MM5Z2V4T1 variant - not the broader MM5Z2V4T1 SERIES.

Does MM5Z2V4T1 support lead-free reflow soldering, and what is its MSL rating?

Yes, the MM5Z2V4T1 is qualified for lead-free reflow with a maximum peak temperature of 260°C and meets Moisture Sensitivity Level 1 (MSL 1) requirements per J-STD-020. Its SOD−523 package uses 100% matte tin lead finish and void-free thermoset epoxy rated UL 94 V−0 - ensuring compatibility with standard Pb-free assembly processes without baking or special handling.

How is the cathode identified on the MM5Z2V4T1 SOD−523 package?

The cathode of the MM5Z2V4T1 is marked on the top surface of the SOD−523 package as a visible band or dot adjacent to pin 1, which corresponds to the terminal labeled "1" in the marking diagram on page 2 of the datasheet. Physical orientation follows standard SOD−523 convention: pin 1 (cathode) is the leftmost terminal when the marking side faces up and the cathode band is oriented toward the viewer's left.

What is the maximum reverse leakage current for MM5Z2V4T1, and at what voltage is it measured?

The MM5Z2V4T1 exhibits a maximum reverse leakage current (I_R) of 1.0 µA at a reverse voltage (V_R) of 1.0 V, as specified in the Electrical Characteristics table. This parameter is measured at T_A = 25°C and confirms the device's ability to remain effectively non-conductive below its 2.2 V minimum Zener onset voltage - critical for low-quiescent-current bias networks.

Can MM5Z2V4T1 be used as a substitute for a 2.5 V logic-level shifter reference?

The MM5Z2V4T1 is not recommended as a direct 2.5 V logic-level shifter reference because its nominal Zener voltage is 2.4 V (2.2–2.6 V range), and its regulation requires ≥5 mA test current to achieve specified Z_ZT. For logic-level translation, a dedicated 2.5 V reference IC with tighter initial accuracy and lower output impedance is preferred; the MM5Z2V4T1 serves best as a clamping or protection element, not an active reference source.