Renesas HZS6A2LTA-E

Overview

HZS6A2LTA-E from Renesas Electronics is a silicon planar Zener diode optimized for low-noise voltage regulation in precision analog and stabilized power supply circuits, featuring a nominal zener voltage of 5.45 V (min 5.3 V / max 5.6 V), 400 mW power dissipation, 150 Ω dynamic resistance at 0.5 mA, and ≤1 μA reverse leakage at 2.0 V. It is widely deployed in reference voltage generation for ADCs, sensor signal conditioning, and low-drift bias networks.

For engineers reviewing the HZS6A2LTA-E datasheet, HZS6A2LTA-E pinout, HZS6A2LTA-E application, or HZS6A2LTA-E equivalent, key selection criteria include zener voltage tolerance (±0.15 V), temperature coefficient (−0.02 %/°C typical), noise performance (1/3–1/10 that of HZ series), and MHD package compatibility with 5 mm-pitch automated insertion.

Technical Context

This device employs a silicon planar junction structure with controlled doping and geometry to minimize flicker (1/f) noise and achieve stable zener breakdown at low currents. Its low dynamic impedance (150 Ω @ 0.5 mA) ensures tight regulation under varying load conditions in feedback loops.

The HZS6A2LTA-E operates within a −55°C to +175°C storage range and supports junction temperatures up to 200°C, enabling use in industrial environments where thermal stability is critical. Its specified zener voltage temperature coefficient of −0.02 %/°C indicates slight negative drift over temperature-critical for high-accuracy references.

Key Specifications

Pinout & Package

The HZS6A2LTA-E is housed in the MHD package (JEITA code GRZZ0002ZC-A), a radial leaded, epoxy-molded, 2-pin through-hole device with 5 mm lead pitch, 2.0 mm body diameter, and 26 mm lead length. Cathode identified by black band.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C5V6 and 1N4734A, the HZS6A2LTA-E delivers superior initial accuracy, lower noise, and tighter temperature drift-making it the preferred choice for metrology-grade references despite its lower power rating and through-hole form factor.

Availability

HZS6A2LTA-E is available at Aetrix Electronics and suitable for high-accuracy ADC reference, low-power sensor biasing, and industrial PLC analog input applications requiring stable component supply and long-term parametric consistency.

Supply support for HZS6A2LTA-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 specializing in microcontrollers, analog, power, and connectivity solutions for industrial, automotive, and enterprise systems.

The HZS-L Series was developed specifically for low-noise, high-stability voltage reference applications in test equipment, medical diagnostics, and precision instrumentation-emphasizing zener voltage accuracy, thermal stability, and flicker noise reduction.

FAQ

What is the exact zener voltage range for HZS6A2LTA-E at 0.5 mA test current?

The HZS6A2LTA-E has a guaranteed zener voltage range of 5.3 V minimum to 5.6 V maximum when tested at I_Z = 0.5 mA, corresponding to a nominal value of 5.45 V with ±0.15 V tolerance. This tight spread supports high-accuracy voltage referencing without post-manufacturing sorting or trimming in production.

Does HZS6A2LTA-E meet RoHS compliance requirements?

Yes, the HZS6A2LTA-E complies with the EU RoHS Directive (2011/65/EU) as confirmed by Renesas Electronics' environmental documentation. It contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE) above threshold limits, and is rated for standard industrial applications per Renesas quality grading.

Can HZS6A2LTA-E be used in surface-mount designs?

No, the HZS6A2LTA-E uses the through-hole MHD package (JEITA GRZZ0002ZC-A) with radial leads and 5 mm pitch. It is not compatible with SMT reflow or wave soldering. For surface-mount equivalents, consider Renesas' HZS-L series variants in SOD-123 or similar packages-but note HZS6A2LTA-E itself is strictly through-hole.

What is the maximum allowable ambient temperature for continuous operation of HZS6A2LTA-E?

The HZS6A2LTA-E supports continuous operation up to +125°C ambient temperature when mounted on a standard FR-4 PCB (100 × 180 × 1.6 mm, paper phenol), based on Figure 3 in the official datasheet. Derating begins above this point, reaching zero power dissipation at +175°C ambient-consistent with its −55°C to +175°C storage rating.

How does the noise performance of HZS6A2LTA-E compare to standard Zener diodes like 1N4734A?

The HZS6A2LTA-E exhibits approximately 1/3 to 1/10 the noise level of legacy HZ-series Zeners-and significantly lower than general-purpose parts like 1N4734A, which lack low-noise process optimization. This is achieved via proprietary planar junction design and controlled defect density, making HZS6A2LTA-E suitable for sub-μV noise-critical applications such as ECG front-ends and high-resolution DAC references.