Renesas HZU5.6B3TRF-E

Overview

HZU5.6B3TRF-E from Renesas Electronics is a silicon planar Zener diode designed for precision voltage stabilization in low-power analog and power-supply reference circuits, with a nominal Zener voltage of 5.67–5.92 V at 5 mA test current, 80 Ω dynamic resistance, and 200 mW power dissipation in an ultra-small URP surface-mount package.

For engineers reviewing the HZU5.6B3TRF-E datasheet, HZU5.6B3TRF-E pinout, HZU5.6B3TRF-E application, or HZU5.6B3TRF-E equivalent, this device serves as a compact, tape-and-reel–ready voltage reference for space-constrained DC-DC feedback loops, sensor biasing, and overvoltage protection where tight tolerance (±2.5% typical), low dynamic impedance, and thermal stability are required.

Technical Context

The HZU5.6B3TRF-E operates as a two-terminal shunt regulator, maintaining stable reverse-biased conduction above its specified Zener breakdown threshold. Its planar junction construction ensures repeatable breakdown characteristics and low leakage under rated reverse current conditions.

It is characterized at 25°C with 5 mA Zener test current, exhibits a negative temperature coefficient near zero crossing (~0 mV/°C at ~5.6 V per Fig.2), and derates linearly to zero power dissipation at 150°C junction temperature per Fig.3's thermal curve.

Key Specifications

Pinout & Package

Ultra-small Resin Package (URP), also designated SC-76A or JEITA code PTSP0002ZA-A, measures 1.55 mm × 0.80 mm × 0.45 mm with gull-wing leads and cathode marking on top surface.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HZU5.6B3TRF-E, both alternatives offer similar nominal voltage but lack its Grade B3 tolerance (±2.5%), sub-80 Ω dynamic resistance, and URP's 1.55 mm length-making HZU5.6B3TRF-E optimal for miniaturized, high-accuracy voltage references where board space and regulation fidelity are critical.

Availability

HZU5.6B3TRF-E is available at Aetrix Electronics and suitable for DC-DC converter feedback, sensor bias reference, and overvoltage clamp applications requiring stable component supply, consistent parametric performance, and RoHS-compliant packaging.

Supply support for HZU5.6B3TRF-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 manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and consumer systems.

HZU5.6B3TRF-E belongs to the HZU Series of silicon planar Zener diodes engineered for compact, high-stability voltage regulation in surface-mount power management and signal conditioning circuits.

FAQ

What is the Zener voltage tolerance for HZU5.6B3TRF-E?

The HZU5.6B3TRF-E has a Zener voltage range of 5.67–5.92 V at 5 mA test current, corresponding to Grade B3 tolerance (±2.5% around nominal 5.6 V). This tighter spread than standard-grade Zeners enables higher accuracy in voltage reference and feedback applications without external trimming.

Does HZU5.6B3TRF-E support automated SMT assembly?

Yes, HZU5.6B3TRF-E is supplied in TRF taping format (3,000 pcs/reel) compatible with standard pick-and-place equipment. Its URP package features gull-wing leads and laser-marked cathode polarity, ensuring reliable orientation and placement yield in high-volume manufacturing.

What is the maximum power dissipation of HZU5.6B3TRF-E at 70°C ambient?

Per Fig.3 in the datasheet, HZU5.6B3TRF-E derates linearly from 200 mW at 25°C to 0 mW at 150°C. At 70°C ambient, its maximum allowable power dissipation is approximately 133 mW, calculated using the 2.5 mW/°C slope derived from the thermal curve.

How does the dynamic resistance of HZU5.6B3TRF-E affect regulation performance?

HZU5.6B3TRF-E's dynamic resistance of ≤80 Ω at 5 mA means that a 1 mA change in Zener current causes only ~80 mV shift in output voltage. This low r_d minimizes output variation under varying load or input conditions-critical for stable feedback in switching regulators and precision analog references.

Is HZU5.6B3TRF-E compliant with RoHS and REACH requirements?

Yes, HZU5.6B3TRF-E meets RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Renesas confirms lead-free terminations and halogen-free molding compound in the URP package, with full compliance documentation available upon request from Aetrix Electronics.