Nexperia USA Inc. NZH15B,115

Overview

NZH15B,115 from Nexperia is a single Zener diode in SOD123F package, designed for precision voltage regulation at 14.25–15.75 V nominal Zener voltage (IZ = 10 mA), with ≤110 Ω differential resistance, ≤16 μA reverse current at VR = 11 V, and AEC-Q101 qualification for automotive power rail stabilization.

For engineers reviewing the NZH15B,115 datasheet, NZH15B,115 pinout, NZH15B,115 application, or NZH15B,115 equivalent, key selection criteria include Zener voltage tolerance (±5%), thermal resistance to solder point (125 K/W on ceramic PCB), low capacitance (75 pF @ 1 MHz), and surface-mount compatibility with reflow-only assembly.

Technical Context

This discrete Zener diode operates as a two-terminal shunt regulator, maintaining stable reference voltage under reverse-biased conditions with controlled breakdown characteristics. Its 15 V nominal working voltage is specified at 10 mA test current, with tight ±5% tolerance and low dynamic impedance enabling accurate clamping in feedback loops.

The device uses planar epitaxial construction for stable temperature coefficient and long-term reliability. It is qualified per AEC-Q101 for junction temperatures up to 150 °C and supports operation across –55 °C to +150 °C ambient, with thermal resistance from junction to solder point rated at 125 K/W on Al₂O₃ ceramic PCB.

Key Specifications

Pinout & Package

SOD123F is a 2-lead surface-mount plastic package measuring 3.6 mm × 1.7 mm × 1.0 mm (L × W × H), with cathode marked by a bar on the body and optimized for reflow soldering only.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C15,215 and MMSZ5245B-7-F, NZH15B,115 uniquely combines AEC-Q101 qualification, SOD123F's enhanced thermal performance on ceramic substrates, and tighter process control for automotive ECU voltage supervision.

Availability

NZH15B,115 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and medical diagnostic equipment requiring stable component supply with full traceability and long-lifecycle support.

Supply support for NZH15B,115 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

Nexperia is a global semiconductor expert focused on high-volume, high-reliability logic, discrete, and MOSFET devices, headquartered in Nijmegen, Netherlands.

The NZH series targets automotive and industrial Zener regulation needs, emphasizing AEC-Q101 compliance, thermal robustness in SMD packages, and tight parametric control for mission-critical voltage references.

FAQ

What is the maximum continuous reverse current the NZH15B,115 can handle before degradation?

The NZH15B,115 has an absolute maximum forward current of 250 mA, but its reverse operating limit is defined by power dissipation: at 25 °C ambient on FR4, it sustains ≤500 mW, corresponding to ≤33.3 mA at 15 V. Exceeding this causes junction temperature rise beyond 150 °C, risking permanent parameter shift.

Does the SOD123F package require special PCB layout considerations compared to standard SOD123?

Yes - SOD123F features a flatter profile (max height 1.0 mm vs. 1.3 mm for SOD123) and optimized thermal pad geometry. The recommended reflow footprint specifies 2.9 mm × 1.6 mm solder land with 1.1 mm × 1.1 mm paste deposits per pad to ensure void-free joints and optimal heat transfer to the cathode tab.

How does the 75 pF capacitance affect high-frequency noise filtering performance?

The 75 pF capacitance (measured at 1 MHz, 0 V) provides effective high-frequency bypass above ~2 MHz when used with series impedance ≥100 Ω. It suppresses RF coupling in switching power supply feedback paths but is insufficient alone for ESD protection - pairing with TVS diodes is required for ISO 10605 compliance.

Is the NZH15B,115 suitable for use in battery-powered IoT nodes with ultra-low quiescent current budgets?

Yes - at VR = 11 V, reverse current is ≤16 μA, and at VR = 5 V, it drops below 0.04 μA. Combined with its 1.0 mm profile and SOD123F's low thermal mass, it enables integration into coin-cell–powered sensor nodes where total system leakage must remain <100 nA in deep-sleep mode.