Nexperia USA Inc. PZU11DB2,115

Overview

PZU11DB2,115 from Nexperia is a dual isolated general-purpose Zener diode in SOT353 (SC-88A) package, designed for precision voltage regulation and transient suppression in compact surface-mounted circuits. It features a nominal Zener voltage of 11 V (±2 % tolerance), non-repetitive peak reverse power dissipation of 40 W, total power dissipation up to 250 mW, and AEC-Q101 qualification for automotive use.

For engineers reviewing the PZU11DB2,115 datasheet, PZU11DB2,115 pinout, PZU11DB2,115 application, or PZU11DB2,115 equivalent, this device serves as a space-efficient dual-Zener solution for overvoltage clamping, reference voltage generation, and ESD protection in low-power analog and mixed-signal subsystems.

Technical Context

The PZU11DB2,115 integrates two electrically isolated Zener diodes in a single 5-pin SOT353 package, enabling independent regulation paths without shared cathode/anode nodes. Each diode supports 11 V nominal breakdown at I_Z = 5 mA with differential resistance ≤60 Ω and temperature coefficient of +7.4 mV/K.

It operates across −55 °C to +150 °C ambient range, with thermal resistance from junction to ambient of 500 K/W (free air) and junction-to-solder-point of 200 K/W. Reverse current is limited to 0.1 µA at V_R = 8.8 V, ensuring low leakage in standby modes.

Key Specifications

Pinout & Package

SOT353 (SC-88A) is a 5-lead, very small outline plastic surface-mount package measuring 2.2 mm × 1.35 mm × 0.95 mm, optimized for high-density PCB assembly and reflow/wave soldering compatibility.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C11LT1G, PZU11DB2,115 saves PCB area and improves matching; versus PZU11B2,115, it delivers twice the voltage accuracy at identical footprint and thermal performance.

Availability

PZU11DB2,115 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and wearable power management systems requiring stable component supply, AEC-Q101 compliance, and dual-Zener functionality in ultra-compact packaging.

Supply support for PZU11DB2,115 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 consumer markets.

The PZUxDB2 series was developed to deliver AEC-Q101–qualified dual-Zener regulation in sub-3 mm² packages for space-constrained automotive ECUs and portable electronics where board real estate and reliability are critical.

FAQ

What is the maximum continuous reverse current the PZU11DB2,115 can sustain?

The device is rated for a maximum continuous forward current of 200 mA per diode, but Zener operation relies on controlled reverse bias. At V_R = 8.8 V (80 % of nominal V_Z), reverse current is guaranteed ≤0.1 µA. Continuous reverse conduction above V_Z must be limited by external series resistance to maintain P_tot ≤250 mW and T_j ≤150 °C.

Can Pin 2 be used as a heatsink or grounded for thermal improvement?

No - Pin 2 is internally unconnected and must remain floating. Connecting it risks mechanical stress on the die bond wire or contamination-induced leakage. Thermal performance is defined with standard FR4 mounting per datasheet condition [2]; improved cooling requires optimizing copper pour on Pins 4 and 5, not Pin 2.

How does the +7.4 mV/K temperature coefficient impact circuit design?

This positive coefficient means V_Z increases ~7.4 mV per °C rise in junction temperature. In voltage reference designs, it can offset the negative TC of op-amp input stages or resistive dividers. For clamping, it raises the trip point at elevated temperatures - a beneficial safety margin in under-hood automotive environments.

Is the PZU11DB2,115 compatible with lead-free reflow profiles?

Yes - the SOT353 package is qualified for standard IPC/JEDEC J-STD-020D reflow profiles, including peak temperatures up to 260 °C. The dark-green halogen-free variant (PZU11DB2/DG) meets JEDEC MSL Level 1 requirements and requires no pre-bake prior to assembly.