onsemi NZ8F2V7SMX2WT5G

Overview

NZ8F2V7SMX2WT5G from onsemi is a tight-tolerance Zener diode with nominal breakdown voltage of 2.7 V (2.54 V min / 2.86 V max at I_ZT = 5 mA), 250 mW power dissipation on FR-4 board, and X2DFNW2 wettable flank package (0402 size, 0.40 mm height). It provides precision voltage regulation in space-constrained portable electronics and automotive control units.

For engineers reviewing the NZ8F2V7SMX2WT5G datasheet, pinout, applications, or equivalent options, key selection criteria include ±2.1% Zener voltage tolerance, 100 Ω dynamic impedance at 5 mA, 20 nA leakage at 1 V reverse bias, 210 pF capacitance at 0 V, and AEC-Q101 qualification for automotive use.

Technical Context

This device operates as a unidirectional voltage reference diode, conducting in reverse bias above its specified Zener voltage threshold. Its low-profile X2DFNW2 package enables AOI-compatible automated assembly while maintaining thermal resistance of 415 °C/W (FR-4 minimum pad) and junction temperature range from −65 °C to +150 °C.

The NZ8F2V7SMX2WT5G belongs to the tight-tolerance NZ8FxxxSMX2W series, offering tighter V_Z limits than standard-tolerance variants (e.g., NZ8F2V7MX2WT5G). It exhibits a typical temperature coefficient near 0 mV/°C for 2.7 V devices and supports stable regulation under transient loads up to 40 W non-repetitive peak reverse power.

Key Specifications

Pinout & Package

The NZ8F2V7SMX2WT5G uses a 2-terminal X2DFNW2 surface-mount package with cathode and anode terminals exposed on opposing sides. The low body height (0.40 mm) and wettable flank geometry support high-yield reflow and AOI verification.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NZ8F2V7MX2WT5G and BZX84-C2V7LT1G, the NZ8F2V7SMX2WT5G delivers superior voltage accuracy and AOI-ready packaging for next-generation portable and automotive electronics, though at a premium over standard-tolerance or legacy-package alternatives.

Availability

NZ8F2V7SMX2WT5G is available at Aetrix Electronics and suitable for smartphone power rail protection, automotive cabin controller ESD clamping, and wearable medical sensor reference applications requiring stable component supply and AEC-Q101-compliant sourcing.

Supply support for NZ8F2V7SMX2WT5G 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 is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications, with emphasis on reliability, performance, and sustainability.

The NZ8F Series is part of onsemi's precision discrete portfolio, designed specifically for space-constrained voltage regulation and transient suppression in portable, automotive, and industrial electronics where wettable flank inspection and AEC-Q101 qualification are mandatory.

FAQ

What is the Zener voltage tolerance of NZ8F2V7SMX2WT5G?

The NZ8F2V7SMX2WT5G has a tight Zener voltage tolerance of ±2.1%, specified as 2.54 V minimum and 2.86 V maximum at test current I_ZT = 5 mA. This tighter tolerance distinguishes it from the standard NZ8F2V7MX2WT5G variant and makes NZ8F2V7SMX2WT5G appropriate for precision voltage reference and clamping applications where regulation accuracy is critical.

Is NZ8F2V7SMX2WT5G qualified for automotive use?

Yes, NZ8F2V7SMX2WT5G is AEC-Q101 qualified and PPAP capable. It meets the stress-test requirements for automotive electronics, including temperature cycling, mechanical shock, and humidity exposure. The "SZ" prefix version (SZNZ8F2V7SMX2WT5G) is explicitly designated for automotive applications requiring unique site and control change documentation - confirming that NZ8F2V7SMX2WT5G itself satisfies the core AEC-Q101 reliability standard.

What package type does NZ8F2V7SMX2WT5G use, and why does it matter?

NZ8F2V7SMX2WT5G uses the X2DFNW2 package (Case 711BG), a 0402-inch wettable flank leadless package with 0.40 mm max height. This package enables automated optical inspection of solder joints - a critical advantage for high-volume manufacturing of compact consumer and automotive electronics. Its low profile also allows placement in ultra-thin devices where height clearance is constrained, making NZ8F2V7SMX2WT5G ideal for modern portable and embedded designs.

How does the leakage current of NZ8F2V7SMX2WT5G affect battery-powered designs?

NZ8F2V7SMX2WT5G specifies a maximum reverse leakage current of 20 nA at V_R = 1 V, which is exceptionally low for a 2.7 V Zener. In always-on battery-powered systems - such as wearables or remote IoT sensors - this low leakage directly extends operational lifetime. For example, in a system drawing 10 μA average current, NZ8F2V7SMX2WT5G contributes less than 0.2% of total quiescent load, preserving battery capacity far longer than higher-leakage alternatives.

Can NZ8F2V7SMX2WT5G replace NZ8F2V7MX2WT5G in existing designs?

NZ8F2V7SMX2WT5G is a direct form-fit-function replacement for NZ8F2V7MX2WT5G, sharing identical X2DFNW2 package dimensions, pinout, and thermal characteristics. However, due to its tighter 2.54–2.86 V Zener voltage range (vs. 2.43–2.97 V for NZ8F2V7MX2WT5G), it may improve regulation accuracy without layout changes - provided the target circuit benefits from reduced V_Z spread. NZ8F2V7SMX2WT5G should be verified for worst-case clamping behavior in safety-critical paths.