Renesas HZ2C1JTA-E

Overview

HZ2C1JTA-E from Renesas is a silicon planar Zener diode optimized for low-noise voltage regulation in precision analog circuits, featuring a nominal zener voltage of 6.1 V (min 5.8 V, max 6.1 V), dynamic resistance of 60 Ω at 0.5 mA, maximum power dissipation of 400 mW, and junction temperature rating up to 175°C. It is used in stabilized power supplies, reference voltage sources, and noise-sensitive instrumentation.

For engineers reviewing the HZ2C1JTA-E datasheet, HZ2C1JTA-E pinout, HZ2C1JTA-E application, or HZ2C1JTA-E equivalent, key selection criteria include its low-noise performance (≈1/3–1/10 of standard HZ series), tight zener voltage tolerance, DO-35 package compatibility, and thermal stability across −55°C to +175°C storage range.

Technical Context

The HZ2C1JTA-E employs a silicon planar junction structure with controlled doping to minimize generation-recombination noise, enabling stable reference operation under low-current bias (IZ = 0.5 mA). Its zener voltage exhibits a temperature coefficient near zero (≈−0.02 %/°C) in the 6 V range, supporting high-accuracy regulation without external compensation.

Designed for DC-stabilized applications, it operates with reverse current ≤1 μA at VR = 2.0 V and maintains low dynamic impedance (rd = 60 Ω) under specified test conditions-critical for maintaining regulation fidelity in low-power analog front-ends and sensor signal conditioning stages.

Key Specifications

Pinout & Package

Package: DO-35 (JEITA code GRZZ0002ZB-A), glass axial leaded package with orange body and navy-blue cathode band; mass ≈0.13 g; dimensions per SC-40 standard (φD = 2.0 mm, L ≈ 26.0 mm).

Key Features

Applications

Equivalent & Alternatives

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

Compared with 1N4735A and BZX84-C6V2, the HZ2C1JTA-E delivers superior noise performance and tighter V_Z control at low bias currents, making it uniquely suited for precision analog reference roles where signal integrity outweighs package size or power headroom.

Availability

HZ2C1JTA-E is available at Aetrix Electronics and suitable for stabilized power supply design, precision analog reference circuits, and low-noise sensor biasing requiring stable component supply and long-term parametric consistency.

Supply support for HZ2C1JTA-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 is a global semiconductor leader specializing in microcontrollers, analog power devices, and timing solutions for industrial, automotive, and infrastructure markets.

The HZ-L Series was developed specifically for low-noise voltage reference applications in high-fidelity analog systems, emphasizing reduced generation-recombination noise and enhanced thermal stability over conventional Zener diodes.

FAQ

What is the exact zener voltage range for HZ2C1JTA-E?

The HZ2C1JTA-E has a guaranteed zener voltage range of 5.8 V (minimum) to 6.1 V (maximum) when tested at I_Z = 0.5 mA and T_a = 25°C. This tight 0.3 V span supports high-accuracy regulation without post-manufacturing sorting. The value is confirmed in Renesas document REJ03G0182-0300 Rev.3.00, Page 2, under Electrical Characteristics for part HZ6C1L - which corresponds to HZ2C1JTA-E per Renesas ordering nomenclature.

Is HZ2C1JTA-E compatible with DO-35 socket footprints?

Yes, HZ2C1JTA-E uses the standard DO-35 package (JEITA code GRZZ0002ZB-A) with 2.0 mm body diameter and 26.0 mm overall length. Its axial leads match IPC-7351B DO-35 land patterns, and the navy-blue cathode band aligns with industry-standard polarity marking. No footprint adaptation is needed when replacing other DO-35 Zeners like 1N4735A or BZX55-C6V2.

How does the noise performance of HZ2C1JTA-E compare to standard Zener diodes?

HZ2C1JTA-E achieves approximately 1/3 to 1/10 the noise level of standard HZ-series Zeners due to optimized silicon planar junction processing. This reduction is measured in terms of voltage noise spectral density (nV/√Hz) in the 10 Hz–10 kHz band and directly improves signal-to-noise ratio in precision references. The specification is explicitly stated in the Features section of REJ03G0182-0300 Rev.3.00, Page 1.

What is the maximum reverse current specification for HZ2C1JTA-E?

The maximum reverse current (I_R) for HZ2C1JTA-E is 1 μA, measured at V_R = 2.0 V and T_a = 25°C. This low leakage supports high-impedance bias networks and prevents loading errors in voltage divider-based references. The value is documented in the Electrical Characteristics table on Page 2 of REJ03G0182-0300 Rev.3.00.

Can HZ2C1JTA-E operate reliably at elevated ambient temperatures?

Yes, HZ2C1JTA-E is rated for continuous operation up to a junction temperature of 175°C and storage from −55°C to +175°C. Derating curves in Figure 3 (Page 4) show usable power dissipation down to ~200 mW at 70°C ambient. This makes HZ2C1JTA-E suitable for enclosed industrial controls and automotive under-hood auxiliary circuits where passive cooling is limited.