Renesas HZ16-1-90

Overview

HZ16-1-90 from Renesas is a silicon planar Zener diode optimized for low-noise voltage regulation in precision analog circuits, with a nominal zener voltage of 15.6 V (min 15.3 V, max 15.9 V), 400 mW power dissipation, 14.0 Ω dynamic impedance at 0.5 mA test current, and DO-35 glass package. It serves as a stable reference in low-drift power supplies and sensor biasing networks.

For engineers reviewing the HZ16-1-90 datasheet, HZ16-1-90 pinout, HZ16-1-90 application, or HZ16-1-90 equivalent, key selection criteria include zener voltage tolerance, temperature coefficient (−0.04 %/°C typical), low noise performance versus standard HZ series, DO-35 mechanical compatibility, and 175°C junction temperature rating.

Technical Context

The HZ16-1-90 operates as a two-terminal voltage reference diode with cathode-anode polarity, designed for DC-biased regulation where low dynamic impedance (14.0 Ω) and tight zener voltage tolerance (±0.3 V) ensure minimal output variation under load. Its silicon planar construction enables reproducible breakdown characteristics and low leakage current.

It exhibits a negative temperature coefficient of −0.04 %/°C (≈ −6.2 mV/°C), making it suitable for temperature-compensated references when paired with positive-TC components. The device is rated for 400 mW maximum power dissipation at 25°C ambient, derating linearly to zero at 175°C junction temperature.

Key Specifications

Pinout & Package

Package: DO-35 glass axial lead package (JEITA code GRZZ0002ZB-A), orange body color, navy blue cathode band. Mass: 0.13 g. Dimensions: φD = 2.0 mm, L = 26.0 mm, E = 4.2 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 1N4742A and BZX85C15, the HZ16-1-90 delivers tighter voltage control (±0.3 V), lower dynamic impedance (14.0 Ω), and verified low-noise performance-making it uniquely suited for high-fidelity analog references where stability and spectral purity are prioritized over raw power capacity.

Availability

HZ16-1-90 is available at Aetrix Electronics and suitable for precision analog front-ends, sensor biasing networks, and calibration voltage standards requiring stable component supply across industrial, test & measurement, and medical instrumentation programs.

Supply support for HZ16-1-90 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

Renesas Electronics is a global semiconductor manufacturer specializing in microcontrollers, analog and power devices, and advanced SoCs for industrial, automotive, and infrastructure markets.

The HZ-L Series was developed specifically for low-noise, high-stability voltage reference applications in precision analog systems-emphasizing reduced diode noise, tight zener voltage tolerance, and robust thermal performance in DO-35 packaging.

FAQ

What is the exact zener voltage range specified for HZ16-1-90?

The HZ16-1-90 has a guaranteed zener voltage range of 15.3 V to 15.9 V when tested at I_Z = 0.5 mA and T_a = 25°C. This ±0.3 V tolerance reflects its role as a precision reference diode within the HZ-L Series, distinct from broader-tolerance alternatives like BZX85C15. The HZ16-1-90 achieves this tight specification through silicon planar process control and screening.

Does HZ16-1-90 have a documented low-noise characteristic compared to standard Zener diodes?

Yes, the HZ16-1-90 is explicitly characterized as having approximately 1/3–1/10 lower noise than the legacy HZ series, per Renesas document REJ03G0182-0300. This low-noise performance is intrinsic to the HZ-L Series' silicon planar structure and process optimization-making the HZ16-1-90 suitable for audio preamps, sensor interfaces, and other noise-sensitive analog circuits where standard Zeners introduce measurable interference.

What is the maximum power dissipation and thermal limit for HZ16-1-90?

The HZ16-1-90 has a maximum power dissipation of 400 mW at T_a = 25°C and a maximum junction temperature of 175°C. Its thermal derating curve shows linear reduction to zero dissipation at 175°C, enabling reliable operation in high-ambient environments such as industrial control cabinets. The DO-35 package's thermal resistance allows the HZ16-1-90 to sustain full-rated power without heatsinking in typical PCB layouts.

Is HZ16-1-90 compatible with automated PCB assembly processes?

Yes, the HZ16-1-90 uses the standard DO-35 axial glass package (JEITA code GRZZ0002ZB-A), which is compatible with wave soldering, reflow-compatible epoxy attachment, and pick-and-place handling using standard axial component feeders. Its 2.0 mm diameter and 26.0 mm length conform to IPC-7351 guidelines for DO-35 footprints, and the navy blue cathode band supports automated optical inspection (AOI) polarity verification during assembly.

How does the temperature coefficient of HZ16-1-90 affect its performance in wide-temperature applications?

The HZ16-1-90 has a typical temperature coefficient of −0.04 %/°C (≈ −6.2 mV/°C), meaning its zener voltage decreases predictably with rising temperature. This stable, linear drift enables accurate compensation in multi-component references and supports calibration algorithms in instruments operating from −40°C to +85°C. Unlike uncharacterized Zeners, the HZ16-1-90's γ_Z is tightly controlled and documented-critical for achieving <±0.5% total reference error over industrial temperature ranges.