onsemi NZD5V1MUT5G

Overview

NZD5V1MUT5G from onsemi is a 5.1 V, 300 mW surface-mount Zener diode in X3DFN (0201) package, designed for precision voltage regulation and ESD protection in space-constrained mobile and portable electronics. It delivers ±5% Zener voltage tolerance (4.85–5.36 V), 80 Ω maximum impedance at 5 mA test current, and 1.5 μA leakage at 1.5 V reverse bias.

For engineers reviewing the NZD5V1MUT5G datasheet, pinout, applications, or equivalent options, key selection criteria include its 130 pF capacitance at 0 V, −2.7 mV/°C temperature coefficient, Class 3 HBM ESD rating (>16 kV), low 0.30 mm profile, and Pb-free X3DFN2 footprint compatibility with high-density PCB layouts.

Technical Context

The NZD5V1MUT5G operates as a two-terminal voltage reference device, clamping reverse voltage to stabilize supply rails or protect I/O lines. Its Zener breakdown mechanism provides predictable regulation at 5.1 V nominal with tight 5 mA test current specification and low dynamic impedance (≤80 Ω).

Thermal design is constrained by a 400 °C/W junction-to-ambient thermal resistance and 300 mW steady-state power dissipation on FR-5 board. It meets MSL 1 reflow requirements (260 °C peak, 10 s) and supports any mounting orientation without derating.

Key Specifications

Pinout & Package

Package: X3DFN2 (Case 152AF), 0.62 mm × 0.32 mm × 0.355 mm body, 0201 metric footprint, Pb-free, MSL 1 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX584C5V1LT1G and MMBZ5221B-7-F, the NZD5V1MUT5G offers the smallest footprint and lowest capacitance among 5.1 V Zeners, making it optimal for ultra-compact, high-speed I/O protection-though its 80 Ω impedance requires verification in low-noise reference designs.

Availability

NZD5V1MUT5G is available at Aetrix Electronics and suitable for smartphone power rail clamping, USB data line protection, wearable sensor biasing, and Bluetooth LE module I/O protection requiring stable component supply across high-volume production cycles.

Supply support for NZD5V1MUT5G 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The NZD5V1MUT5G belongs to the NZD5V1MU Series of micro-packaged Zener regulators, engineered specifically for space-constrained mobile and portable electronics needing reliable voltage clamping and integrated ESD protection.

FAQ

What is the nominal Zener voltage of the NZD5V1MUT5G?

The NZD5V1MUT5G has a nominal Zener voltage of 5.1 V, with a guaranteed range of 4.85 V to 5.36 V at a test current of 5 mA. This tolerance band ensures consistent clamping behavior across production lots and supports robust overvoltage protection design in 5 V systems without requiring post-production calibration.

Does the NZD5V1MUT5G support lead-free reflow soldering?

Yes, the NZD5V1MUT5G is Pb-free and qualified for lead-free reflow soldering with a maximum peak temperature of 260°C for 10 seconds. It meets MSL 1 moisture sensitivity requirements and is compatible with standard industry reflow profiles, eliminating bake-out steps prior to assembly.

What is the maximum capacitance of the NZD5V1MUT5G and why does it matter?

The NZD5V1MUT5G exhibits 130 pF capacitance at 0 V reverse bias and 1 MHz frequency. This low value is critical for preserving signal integrity on high-speed data lines such as USB 2.0 or I²C, where excessive capacitance would attenuate edge rates or cause timing jitter-making it suitable for direct placement on differential pairs without equalization.

How does the temperature coefficient affect NZD5V1MUT5G performance in automotive environments?

The NZD5V1MUT5G has a temperature coefficient of −2.7 mV/°C, meaning its Zener voltage decreases linearly with rising temperature. Over the full −55°C to +150°C junction range, this results in ~540 mV total drift-acceptable for non-precision clamping but requiring compensation in reference applications where stability below ±10 mV is required.

Can the NZD5V1MUT5G replace a standard 1N4733A in a legacy design?

No, the NZD5V1MUT5G cannot serve as a drop-in replacement for the through-hole 1N4733A due to fundamental differences: it uses a 0201 X3DFN2 package (vs. DO-41), has lower power rating (300 mW vs. 1 W), and different thermal characteristics. Redesign of PCB layout, thermal relief, and current-limiting network is required to integrate the NZD5V1MUT5G into such a system.