Nexperia USA Inc. PZU7.5DB2,115

Overview

PZU7.5DB2,115 from Nexperia is a dual isolated general-purpose Zener diode pair in SOT353 (SC-88A) package, designed for precision voltage regulation and overvoltage protection in compact surface-mounted circuits. It delivers 7.5 V nominal Zener voltage with ±2 % tolerance, 60 Ω typical differential resistance at 5 mA, and 0.5 µA maximum reverse current at 6.0 V, supporting automotive-grade reliability per AEC-Q101.

For engineers reviewing the PZU7.5DB2,115 datasheet, PZU7.5DB2,115 pinout, PZU7.5DB2,115 application, or PZU7.5DB2,115 equivalent, this device serves as a space-efficient dual-Zener solution for rail clamping, reference stabilization, and transient suppression in low-power analog and mixed-signal subsystems where thermal performance and halogen-free compliance matter.

Technical Context

The PZU7.5DB2,115 integrates two electrically isolated Zener diodes in a single 5-pin SOT353 package - each diode operates independently with dedicated anode and cathode terminals. Its 7.5 V nominal breakdown voltage is specified at 5 mA test current, with temperature coefficient of +4.0 mV/K ensuring stable regulation across operating temperature ranges.

Thermal design is supported by R_th(j-a) = 500 K/W (free air), and surge capability includes non-repetitive peak reverse power dissipation of 40 W (100 µs square wave). The device meets AEC-Q101 stress qualification for automotive use and supports both standard and halogen-free (DG) variants.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C7V5 and PZU7.5D,115, the PZU7.5DB2,115 uniquely combines AEC-Q101 qualification, dual-isolated architecture, and ±2 % tolerance in one SOT353 device-enabling single-component solutions for automotive and industrial systems where reliability, space, and precision are co-constrained.

Availability

PZU7.5DB2,115 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog protection, consumer audio reference supplies, and medical portable device sequencing requiring stable component supply and long-term lifecycle support.

Supply support for PZU7.5DB2,115 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 was engineered specifically for space-constrained, high-stability voltage regulation in automotive ECUs and industrial control modules-prioritizing AEC-Q101 compliance, tight Zener tolerance, and dual-diode integration in ultra-small packages.

FAQ

What is the maximum continuous reverse current the PZU7.5DB2,115 can sustain at 7.5 V?

The device is rated for 200 mA maximum forward current, but its Zener operation is defined at test currents up to 5 mA for specification. Continuous reverse current depends on thermal design: at 25 °C ambient and 250 mW total dissipation limit, sustained Zener current must remain below ~33 mA to avoid exceeding junction temperature limits. Derating is required above 25 °C ambient per R_th(j-a) = 500 K/W.

Can Pin 2 be tied to ground or left floating in PCB layout?

Pin 2 is internally unconnected and must be left floating-no bond wire or silicon connection exists. Grounding it introduces risk of unintended parasitic capacitance or leakage paths that could degrade high-impedance reference performance. Layout guidelines recommend keeping Pin 2 unconnected and avoiding copper pour beneath it to minimize stray coupling.

How does the +4.0 mV/K temperature coefficient affect accuracy in a 0–85 °C operating range?

Over 0–85 °C, the Zener voltage shifts by +0.34 V (85 K × 4.0 mV/K), resulting in a 4.5 % deviation from nominal 7.5 V. For applications requiring tighter stability, this drift must be compensated via circuit-level techniques (e.g., complementary diode networks) or selected alongside other components whose temperature coefficients offset this behavior.

Is the PZU7.5DB2,115 suitable for bidirectional ESD protection on a data line?

No-it is a unidirectional Zener pair, not a symmetric TVS. Each diode conducts only in reverse breakdown or forward conduction; there is no inherent back-to-back configuration. For bidirectional ESD protection, a dedicated bidirectional TVS like PESD5V0S1BA is required. This device functions as a clamp to V_CC or ground-not line-to-line.