Renesas HZS30-3LTD-E

Overview

HZS30-3LTD-E from Renesas Electronics is a silicon planar Zener diode engineered for low-noise voltage regulation in precision analog and stabilized power supply circuits, with a nominal zener voltage of 30.2–31.6 V at 0.5 mA, 400 mW power dissipation, and dynamic resistance of 200 Ω at 1 mA - deployed in instrumentation, sensor signal conditioning, and reference voltage generation.

For engineers reviewing the HZS30-3LTD-E datasheet, HZS30-3LTD-E pinout, HZS30-3LTD-E application, or HZS30-3LTD-E equivalent, this part serves as a low-noise, high-stability voltage reference where zener impedance, temperature coefficient, and leakage current are critical selection criteria in analog front-end and calibration-critical designs.

Technical Context

This device operates as a two-terminal shunt voltage regulator using silicon planar junction technology optimized to minimize noise generation - achieving approximately 1/3–1/10 the noise level of legacy HZ-series Zeners. Its zener voltage is specified under DC test conditions at 0.5 mA, with dynamic resistance measured at 1 mA.

The HZS30-3LTD-E exhibits a negative temperature coefficient in the 30 V range (≈ −0.04 %/°C), requires thermal derating above 25°C per Fig.3, and is rated for junction temperatures up to 200°C - confirming suitability for industrial ambient environments with controlled PCB layout and heatsinking.

Key Specifications

Pinout & Package

Package: MHD (JEITA GRZZ0002ZC-A), axial lead, 5 mm pitch, 2.0 mm diameter body, 26 mm length - compatible with high-speed automatic insertion equipment and standard through-hole PCB assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 1N5257BRLG and BZX85C30, the HZS30-3LTD-E delivers verified low-noise performance and tighter voltage tolerance (±2.3%) at 400 mW - making it uniquely suited for metrology, sensor excitation, and high-resolution data acquisition where noise and drift dominate system error budgets.

Availability

HZS30-3LTD-E is available at Aetrix Electronics and suitable for precision instrumentation, industrial sensor interfaces, and stabilized power supply designs requiring stable component supply with traceable lot control and long-term lifecycle support.

Supply support for HZS30-3LTD-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 manufacturer specializing in microcontrollers, analog, power, and timing solutions for industrial, automotive, and infrastructure markets.

The HZS-L Series belongs to Renesas' discrete voltage reference product line, designed specifically for low-noise, high-stability zener regulation in precision analog systems where traditional Zeners introduce unacceptable noise or drift.

FAQ

What is the zener voltage tolerance of HZS30-3LTD-E?

The HZS30-3LTD-E has a zener voltage range of 30.2 V to 31.6 V at I_Z = 0.5 mA, corresponding to a ±2.3% tolerance about the nominal 30.9 V point. This tighter tolerance than standard Zeners supports higher accuracy in reference and calibration applications without external trimming. The HZS30-3LTD-E datasheet specifies this range under DC test conditions and confirms consistency across production lots.

Does HZS30-3LTD-E support high-frequency noise suppression?

No - the HZS30-3LTD-E is optimized for low-frequency (1/f) and broadband voltage noise reduction, not RF filtering. Its 200 Ω dynamic resistance and lack of integrated capacitance mean it does not suppress MHz-range switching noise. For such applications, pair the HZS30-3LTD-E with an external RC filter or ferrite bead. The HZS30-3LTD-E's primary noise advantage lies in analog signal chains below 10 kHz.

What is the maximum allowable ambient temperature for continuous operation of HZS30-3LTD-E?

The HZS30-3LTD-E can operate continuously up to +175°C ambient temperature when mounted on a standard 100 × 180 × 1.6 mm paper-phenol PCB (per Fig.3), provided power dissipation is derated linearly above 25°C. At 100°C ambient, its usable power drops to ~240 mW. The HZS30-3LTD-E junction temperature must remain ≤200°C - verify thermal design using actual board layout and airflow.

Is HZS30-3LTD-E RoHS compliant?

Yes - the HZS30-3LTD-E complies with the EU RoHS Directive (2011/65/EU) as confirmed by Renesas Electronics' environmental compliance documentation. Lead content is restricted to ≤0.1% by weight in homogeneous materials, and all six RoHS substances are within limits. The HZS30-3LTD-E carries no exemption codes and is suitable for consumer, industrial, and commercial end equipment.

Can HZS30-3LTD-E be used in life-support medical applications?

No - the HZS30-3LTD-E is classified as a "Standard" quality grade device per Renesas' quality grading system (REJ03G0166-0300 Rev.3.00), intended for office, industrial, and communications equipment - not for life-support, surgical, or implantable medical systems. Use in such applications requires prior written consent from Renesas and validation against IEC 60601-1. The HZS30-3LTD-E is not qualified for safety-critical healthcare intervention.