Renesas HZU16B2TRF-E

Overview

HZU16B2TRF-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 16.35 V to 17.09 V at 5 mA test current, 12.0 Ω dynamic resistance, and 200 mW power dissipation in an ultra-small URP surface-mount package.

For engineers reviewing the HZU16B2TRF-E datasheet, HZU16B2TRF-E pinout, HZU16B2TRF-E application, or HZU16B2TRF-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 ±3.5% initial tolerance and low temperature coefficient are critical.

Technical Context

The HZU16B2TRF-E operates as a two-terminal shunt regulator, maintaining stable output voltage across varying load currents by conducting reverse-biased Zener breakdown. Its design targets operation at I_Z = 5 mA with guaranteed V_Z tolerance and low rd (12.0 Ω) to minimize output impedance variation under dynamic load conditions.

It features a junction temperature limit of 150°C and storage range from –55°C to +150°C, enabling use in industrial ambient environments. The URP package's thermal resistance and 0.8 mm profile support high-density PCB layouts without compromising thermal derating per Fig.3.

Key Specifications

Pinout & Package

Ultra-small Resin Package (URP), JEITA code SC-76A, Renesas code PTSP0002ZA-A, dimensions: 1.55 × 0.80 × 0.45 mm (L × W × H), weight 0.004 g, cathode-marked top-side marking "16•".

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C16LT1G and MMSZ5245B-TP, the HZU16B2TRF-E delivers tighter V_Z tolerance (±3.5% vs. ±5%), lower dynamic resistance (12.0 Ω vs. ≥20 Ω), and a 60% smaller footprint - making it optimal for next-generation miniaturized power management where regulation stability and board area are jointly constrained.

Availability

HZU16B2TRF-E is available at Aetrix Electronics and suitable for industrial power supply feedback, automotive sensor biasing, overvoltage protection clamps, and portable device battery monitoring requiring stable component supply with no long lead times.

Supply support for HZU16B2TRF-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 delivering microcontrollers, analog, power, and timing solutions for industrial, automotive, and consumer systems, with emphasis on reliability and integration.

The HZU Series belongs to Renesas' discrete Zener diode product line, engineered specifically for compact, high-stability voltage reference and clamping in surface-mount power management circuits where thermal efficiency and precision outweigh cost sensitivity.

FAQ

What is the Zener voltage range for HZU16B2TRF-E?

The HZU16B2TRF-E has a specified Zener voltage range of 16.35 V to 17.09 V at a test current of 5 mA, corresponding to its Grade B2 tolerance band. This range is measured under pulsed conditions (PW = 40 ms) per the Renesas preliminary datasheet R07DS0423EJ1000 Rev.10.00. The HZU16B2TRF-E maintains this performance across its rated junction temperature range and is validated for use in production-grade industrial designs.

Is HZU16B2TRF-E RoHS compliant?

Yes, the HZU16B2TRF-E meets EU RoHS Directive requirements as confirmed by Renesas Electronics' environmental compliance documentation. It contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE), and is suitable for use in consumer, industrial, and automotive electronics where RoHS conformance is mandatory. The HZU16B2TRF-E carries full material declaration and substance compliance reporting through Renesas' official channels.

What is the maximum power dissipation of HZU16B2TRF-E at 75°C ambient?

Per Fig.3 in the HZU16B2TRF-E datasheet, power dissipation derates linearly from 200 mW at 25°C to approximately 120 mW at 75°C ambient temperature. This derating follows the curve defined by the URP package's thermal characteristics and must be applied when calculating safe operating area in thermally constrained enclosures. The HZU16B2TRF-E remains functional up to 150°C junction temperature, but sustained operation above 75°C ambient requires careful PCB copper pour and airflow analysis.

Does HZU16B2TRF-E have a specified temperature coefficient?

Yes - the HZU16B2TRF-E exhibits a Zener voltage temperature coefficient (γ_Z) of approximately +0.04 %/°C near 16 V, as shown in Fig.2 of the datasheet. This positive coefficient means V_Z increases slightly with rising temperature, supporting stable regulation in moderate-temperature gradients. The HZU16B2TRF-E's coefficient is consistent across Grade B2 units and is verified across the full operating junction temperature range.

Can HZU16B2TRF-E replace HZU16B3TRF-E in a design?

No - the HZU16B2TRF-E and HZU16B3TRF-E differ in Zener voltage range: B2 is 16.35–17.09 V, while B3 is 16.35–17.09 V for HZU16 only in earlier revisions but later B3 grades extend to higher bands; however, per R07DS0423EJ1000 Rev.10.00, HZU16B3 is not listed - only B1/B2 grades exist for HZU16. Therefore, HZU16B2TRF-E is the highest-tolerance grade available for this voltage point, and substitution with non-existent or out-of-spec variants is not supported. Always verify grade code against the marked device ("16•") and datasheet table.