Renesas HZC5.6TRF-E

Overview

HZC5.6TRF-E from Renesas Electronics is a silicon epitaxial planar Zener diode optimized for surge absorption in low-power signal and power rail protection circuits, with a nominal Zener voltage of 5.6 V, 5 mA test current, 2.5 V maximum reverse voltage at 5 µA, 80 Ω typical dynamic resistance, and rated for 150 mW power dissipation in ultra-small UFP (SC-79) surface-mount package.

For engineers reviewing the HZC5.6TRF-E datasheet, HZC5.6TRF-E pinout, HZC5.6TRF-E application, or HZC5.6TRF-E equivalent, this page delivers verified electrical specs, thermal derating behavior, ESD robustness (±30 kV per IEC 61000-4-2), terminal roles, and direct alternatives for overvoltage clamping in portable electronics, sensor interfaces, and microcontroller I/O protection.

Technical Context

The HZC5.6TRF-E operates as a precision voltage reference and transient suppressor in reverse-biased mode, leveraging epitaxial planar junction technology to achieve stable Zener breakdown with low temperature coefficient (≈+0.05 %/°C near 5.6 V). Its design targets low-leakage, fast-response clamping where tight voltage tolerance and minimal dynamic impedance are critical.

It is characterized at 25°C with 5 mA Zener test current and exhibits defined thermal derating above 25°C ambient - power dissipation linearly decreases to zero at 150°C junction temperature. The device meets JEITA standard SC-79 (UFP) mechanical form and is rated for storage between −55°C and +150°C.

Key Specifications

Pinout & Package

Package: Ultra Small Flat Lead (UFP), JEITA code SC-79, Renesas code PWSF0002ZA-A, mass 0.0016 g, dimensions 1.70 × 1.20 × 0.60 mm (L × W × H).

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX584-C5V6 and MMBZ5232BS, the HZC5.6TRF-E offers the smallest footprint (UFP/SC-79), lowest dynamic resistance among sub-2-mm packages, and guaranteed ≤5 µA leakage at 2.5 V - making it optimal for ultra-compact, low-leakage, high-speed clamping where board area is constrained.

Availability

HZC5.6TRF-E is available at Aetrix Electronics and suitable for USB interface protection, microcontroller I/O safeguarding, sensor signal conditioning, and low-voltage rail clamping requiring stable component supply across high-mix, low-volume production runs.

Supply support for HZC5.6TRF-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 delivering microcontrollers, analog, power, and connectivity solutions for automotive, industrial, and IoT applications.

The HZC Series belongs to Renesas' discrete protection portfolio, engineered specifically for compact, high-reliability surge suppression in consumer and industrial electronics using silicon epitaxial planar Zener technology.

FAQ

What is the Zener voltage tolerance of HZC5.6TRF-E?

The HZC5.6TRF-E has a specified Zener voltage range of 5.31 V to 5.92 V at 5 mA test current, representing a ±5.5% tolerance about the nominal 5.6 V value. This tolerance is guaranteed across manufacturing lots and validated per Renesas' production testing protocol. The HZC5.6TRF-E maintains this specification under standard operating conditions (Ta = 25°C) and is not subject to wider variation unless operated outside its absolute maximum ratings.

Does HZC5.6TRF-E support bidirectional ESD protection?

No - the HZC5.6TRF-E is a unidirectional Zener diode configured for cathode-to-anode breakdown only. It provides effective clamping when the cathode is biased positive relative to the anode (reverse bias), but does not conduct in forward direction for ESD suppression. For true bidirectional protection, two HZC5.6TRF-E devices must be used in series opposition, or a dedicated bidirectional TVS like the RCLAMP0524P should be selected instead of the HZC5.6TRF-E.

What is the maximum ambient temperature for continuous operation of HZC5.6TRF-E?

The HZC5.6TRF-E can operate continuously up to 125°C ambient temperature when power dissipation is reduced per its derating curve - full 150 mW is rated only at 25°C, decreasing linearly to zero at 150°C junction temperature. At 125°C ambient, the allowable power drops to approximately 50 mW. This thermal behavior is documented in Figure 2 of the HZC5.6TRF-E datasheet and must be accounted for in thermally dense layouts.

Is HZC5.6TRF-E RoHS compliant and lead-free?

Yes - the HZC5.6TRF-E conforms to the EU RoHS Directive and is manufactured as a lead-free device. Renesas confirms compliance in its environmental documentation, and the UFP package uses matte tin plating on terminals. No exemptions apply, and the device meets JEDEC J-STD-020 moisture sensitivity level (MSL) 1, allowing unlimited floor life at ≤30°C/60% RH.

Can HZC5.6TRF-E replace a 5.1 V Zener diode in an existing circuit?

Not without circuit review - the HZC5.6TRF-E has a higher nominal Zener voltage (5.6 V vs. 5.1 V) and tighter tolerance (±5.5% vs. typically ±5% for 5.1 V parts), which may raise clamping threshold by up to 0.8 V. If the original design relies on precise 5.1 V regulation or low-voltage cutoff, substituting HZC5.6TRF-E could cause functional failure. Verify voltage margins, leakage, and dynamic impedance impact before replacement in any circuit using HZC5.6TRF-E.