NXP Semiconductors PZU5.6DB2,115

Overview

PZU5.6DB2,115 from Nexperia is a dual isolated Zener diode pair in SOT353 (SC-88A) package, designed for precision voltage regulation and clamping in compact DC power rails. It delivers 5.6 V nominal Zener voltage (±2 % tolerance), 100 Ω typical differential resistance at I_Z = 5 mA, 1 µA max reverse current at V_R = 4.5 V, and AEC-Q101 qualification for automotive use.

For engineers reviewing the PZU5.6DB2,115 datasheet, PZU5.6DB2,115 pinout, PZU5.6DB2,115 application, or PZU5.6DB2,115 equivalent, this device supports dual-rail voltage reference, overvoltage protection in sensor interfaces, and low-power biasing in space-constrained industrial controllers where tight voltage tolerance and halogen-free packaging are required.

Technical Context

The PZU5.6DB2,115 integrates two electrically isolated Zener diodes in a single 5-pin SOT353 package, enabling independent regulation or bidirectional clamping without shared cathode/anode nodes. Each diode operates with a specified 5.6 V working voltage and exhibits a +1.9 mV/K temperature coefficient near I_Z = 5 mA.

It supports non-repetitive surge handling up to 40 W (t_p = 100 µs), maintains ≤250 mW total power dissipation at T_amb ≤25 °C, and achieves 275 mW derated dissipation with enhanced thermal pad layout-critical for sustained operation in automotive cabin modules and industrial PLC I/O stages.

Key Specifications

Pinout & Package

SOT353 (SC-88A) is a 5-lead surface-mount plastic package with 0.65 mm pitch, 1.35 mm body width, and halogen-free construction. Pin 2 is internally unconnected; pins 1/5 and 3/4 form two independent anode–cathode pairs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C5V6 and PZU5.6BD,115, the PZU5.6DB2,115 uniquely combines dual isolation, ±2 % tolerance, and AEC-Q101 qualification-making it the only option for space-constrained, safety-aware dual-rail regulation in Tier-1 automotive subsystems.

Availability

PZU5.6DB2,115 is available at Aetrix Electronics and suitable for automotive cabin electronics, industrial PLC analog inputs, and wearable health monitors requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for PZU5.6DB2,115 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

Nexperia is a global leader in discrete, logic, and PowerMOS semiconductors, spun off from NXP in 2017 and focused on high-volume, high-reliability components for automotive, industrial, and computing markets.

The PZUxDB2 series targets compact, high-precision voltage regulation in automotive and industrial systems where dual Zener functionality, AEC-Q101 compliance, and halogen-free packaging are mandatory design requirements.

FAQ

What is the maximum continuous forward current for each diode in the PZU5.6DB2,115?

Each diode supports a maximum continuous forward current of 200 mA, as defined in the Absolute Maximum Ratings table. This rating applies under ambient conditions ≤25 °C with standard FR4 PCB mounting and ensures safe operation in constant-current bias applications such as LED drivers or active pull-up networks.

Can Pin 2 be grounded or left floating in PCB layout?

Pin 2 is internally not connected and must remain unconnected-neither grounded nor tied to any net. The datasheet explicitly states "not connected" in Table 2, and routing a trace to it risks mechanical stress or solder bridging in reflow, potentially compromising isolation integrity between the two diodes.

How does the +1.9 mV/K temperature coefficient affect regulation accuracy over −40 °C to +125 °C?

At I_Z = 5 mA, the coefficient causes approximately ±0.17 V total drift across −40 °C to +125 °C (165 K × 1.9 mV/K). This is factored into the full V_Z min/max spec (5.49 V to 5.73 V), meaning the device remains within its guaranteed 5.6 V ±2 % band across the full automotive temperature range.

Is the PZU5.6DB2,115 compatible with lead-free reflow profiles?

Yes-the SOT353 package is qualified for standard IPC/JEDEC J-STD-020D lead-free reflow, with peak temperature up to 260 °C for 30 seconds. Figure 8 in the datasheet provides the recommended reflow footprint, and the dark-green halogen-free plastic meets JEDEC MSL Level 1 requirements with unlimited floor life at ≤30 °C/60 % RH.