Renesas HZU3.3B1TRF-E

Overview

HZU3.3B1TRF-E from Renesas Electronics is a silicon planar Zener diode designed for precision voltage stabilization in low-power analog and digital supply rails, featuring a nominal Zener voltage of 3.40 V to 3.65 V at 5 mA, 20 µA maximum reverse leakage at 1.0 V, and 130 Ω dynamic resistance - deployed in ultra-small surface-mount URP (SC-76A) packages for space-constrained power regulation.

For engineers reviewing the HZU3.3B1TRF-E datasheet, HZU3.3B1TRF-E pinout, HZU3.3B1TRF-E application, or HZU3.3B1TRF-E equivalent, key selection criteria include grade-specific Zener tolerance (±3.5% at 3.525 V nominal), thermal coefficient behavior near 0 mV/°C, taping format (3,000 pcs/reel), and compatibility with automated SMT assembly on 0.8 mm pitch PCB land patterns.

Technical Context

This Zener diode operates as a two-terminal shunt regulator, maintaining stable reference voltage under reverse-biased conditions with specified test current I_Z = 5 mA. Its silicon planar construction ensures repeatable breakdown characteristics and low noise performance suitable for feedback loops in LDOs and voltage monitors.

The device exhibits a near-zero temperature coefficient (γ_Z ≈ 0 mV/°C) around its 3.3 V nominal range, minimizing drift across –55°C to +150°C ambient operation. It is rated for 200 mW power dissipation at 25°C, derating linearly per Fig. 3 to ~100 mW at 85°C ambient.

Key Specifications

Pinout & Package

Ultra-small Resin Package (URP), JEITA code SC-76A, Renesas code PTSP0002ZA-A, dimensions 0.8 mm × 0.8 mm × 0.45 mm (max height), mass 0.004 g, tape-and-reel packaging (TRF = 3,000 pcs/reel).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMSZ3V3T1G and BZX384-C3V3, the HZU3.3B1TRF-E delivers tighter voltage tolerance (±3.5%) and smaller URP footprint (0.8 mm²), making it optimal for miniaturized, high-accuracy reference designs where thermal stability and layout density are prioritized over raw power handling.

Availability

HZU3.3B1TRF-E is available at Aetrix Electronics and suitable for industrial sensor conditioning, USB power monitoring, IoT battery supervision, and embedded microcontroller reset circuits requiring stable component supply, consistent Zener grading, and RoHS-compliant SMT packaging.

Supply support for HZU3.3B1TRF-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 enterprise systems with emphasis on functional safety and long-term supply assurance.

The HZU Series belongs to Renesas' precision discrete portfolio, engineered specifically for compact, stable voltage reference applications in space-constrained and thermally variable environments - targeting analog front-ends, power supervision, and sensor interface subsystems.

FAQ

What is the exact Zener voltage range for HZU3.3B1TRF-E at 5 mA test current?

The HZU3.3B1TRF-E has a guaranteed Zener voltage range of 3.40 V to 3.65 V when tested at I_Z = 5 mA and T_a = 25°C. This B1-grade specification reflects ±3.5% tolerance centered at 3.525 V, tighter than standard B-grade variants in the HZU3.3 family. The value is confirmed in Table on Page 2 of R07DS0423EJ1000 Rev.10.00.

Does HZU3.3B1TRF-E support reflow soldering, and what is its maximum peak temperature rating?

Yes, HZU3.3B1TRF-E is qualified for lead-free reflow soldering per J-STD-020. Its URP package withstands peak temperatures up to 260°C for ≤30 seconds. The device's glass epoxy molding compound and gold-bonded internal structure ensure mechanical integrity and intermetallic stability under standard Pb-free reflow profiles used in high-volume SMT lines.

How does the temperature coefficient of HZU3.3B1TRF-E compare to other 3.3 V Zener diodes?

HZU3.3B1TRF-E exhibits a near-zero temperature coefficient (γ_Z ≈ 0 mV/°C) in the 3.3 V range, as shown in Fig.2 on Page 5 of its datasheet. This is superior to many generic 3.3 V Zeners (e.g., 1N4728A: +2.5 mV/°C), enabling <±5 mV total drift from –40°C to +85°C - critical for precision analog references where thermal stability dominates error budget.

Is HZU3.3B1TRF-E RoHS compliant and halogen-free?

Yes, HZU3.3B1TRF-E meets RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21. Renesas confirms compliance in its environmental documentation and product change notices. The URP package uses bromine-free flame-retardant resin, and all metallization layers are lead-free and antimony-free, supporting green manufacturing requirements for consumer and industrial end equipment.

What is the meaning of "TRF" in the part number HZU3.3B1TRF-E?

In HZU3.3B1TRF-E, "TRF" designates tape-and-reel packaging per EIA-481 standard, with 3,000 units per reel. The "-E" suffix indicates lead-free (Pb-free) termination finish. This configuration ensures compatibility with automated SMT placement systems and satisfies IPC-A-610 Class 2/3 assembly requirements for commercial and industrial electronics production.