Renesas HZ6C1RE-E

Overview

HZ6C1RE-E from Renesas is a silicon planar Zener diode engineered for low-noise voltage regulation in precision analog circuits, with a nominal zener voltage of 6.0 V (min 6.0 V, max 6.3 V), dynamic resistance of 60 Ω at 0.5 mA test current, maximum power dissipation of 400 mW, and junction temperature rating up to 175°C - deployed in reference voltage sources and stabilized power supplies.

For engineers reviewing the HZ6C1RE-E datasheet, HZ6C1RE-E pinout, HZ6C1RE-E application, or HZ6C1RE-E equivalent, key selection criteria include zener voltage tolerance (±0.3 V), low noise performance (1/3–1/10 lower than standard HZ series), DO-35 package compatibility, thermal stability across −55°C to +175°C, and suitability for low-current biasing in instrumentation amplifiers and ADC references.

Technical Context

This device operates as a two-terminal voltage reference using avalanche breakdown in a silicon planar junction, optimized for minimal broadband noise generation and stable DC regulation. Its low dynamic impedance (60 Ω) and tight zener voltage tolerance support high-accuracy feedback loops in linear regulators and sensor signal conditioning.

The HZ6C1RE-E exhibits a negative temperature coefficient near 6 V (≈−0.04 %/°C per Fig.2), enabling predictable drift compensation in mixed-signal systems. It is rated for continuous operation at 400 mW under 25°C ambient, derating linearly above 25°C per the published power vs. temperature curve (Fig.3).

Key Specifications

Pinout & Package

DO-35 glass axial package: hermetically sealed, 2.0 mm diameter body, 26.0 mm overall length, 0.5 mm lead diameter, 4.2 mm lead spacing (E), mass ≈ 0.13 g. Cathode identified by navy-blue band; anode is unmarked end.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 1N4734A and BZX55C6V2, the HZ6C1RE-E delivers tighter voltage tolerance (±0.3 V vs. ±5%), lower noise, and optimized 0.5 mA operating point - making it uniquely suitable for low-power, high-accuracy analog references where bias current is constrained and spectral purity is critical.

Availability

HZ6C1RE-E is available at Aetrix Electronics and suitable for precision instrumentation, low-noise audio electronics, industrial sensor interfaces, and embedded reference voltage generation requiring stable component supply and long-term obsolescence management.

Supply support for HZ6C1RE-E 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 Corporation is a global semiconductor leader delivering microcontrollers, analog power, and SoC solutions for automotive, industrial, and IoT applications.

The HZ-L Series Zener diodes were designed specifically for low-noise, high-stability voltage reference applications in precision analog systems - emphasizing reduced broadband noise, tight V_Z tolerance, and robust thermal performance in DO-35 packaging.

FAQ

What is the exact zener voltage range for HZ6C1RE-E?

The HZ6C1RE-E has a guaranteed zener voltage range of 6.0 V minimum to 6.3 V maximum when tested at I_Z = 0.5 mA and T_a = 25°C. This 0.3 V span reflects tight process control for precision reference use, distinct from broader-tolerance variants like HZ6C2L (6.0–6.3 V) or HZ6C3L (6.1–6.4 V) in the same family.

Does HZ6C1RE-E have a specified noise performance metric?

Yes - the HZ-L Series datasheet states that its diode noise level is approximately 1/3 to 1/10 lower than the standard HZ series. While no quantitative nV/√Hz value is given, this comparative specification confirms its qualification for low-noise analog circuits such as microphone preamps and high-resolution ADC references where spectral purity is critical.

What is the maximum reverse leakage current for HZ6C1RE-E?

The HZ6C1RE-E specifies a maximum reverse leakage current (I_R) of 1 μA at V_R = 2.0 V and T_a = 25°C. This low leakage supports high-impedance reference nodes and minimizes error in bias networks where input currents must remain below 100 nA, such as in electrometer-grade op-amp circuits.

Is HZ6C1RE-E compatible with automated PCB assembly processes?

Yes - the HZ6C1RE-E uses the standard DO-35 axial package (JEITA GRZZ0002ZB-A) with 0.5 mm diameter leads and 4.2 mm lead spacing, fully compatible with wave soldering, selective soldering, and hand-soldering. Its 0.13 g mass and glass body meet IPC-A-610 Class 2 mechanical robustness requirements for industrial assembly lines.

What is the temperature coefficient behavior of HZ6C1RE-E?

Per Figure 2 in the datasheet, the HZ6C1RE-E exhibits a negative temperature coefficient near −0.04 %/°C (≈−2.4 mV/°C) at 6.0 V, consistent with low-voltage Zener devices operating in the avalanche-Zener transition region. This predictable drift enables first-order compensation in temperature-critical reference designs without additional components.