Nexperia USA Inc. PDZ11B,115

Overview

PDZ11B,115 from Nexperia is a single low-power Zener diode in SOD323 (SC-76) package, designed for precision voltage regulation at 11 V nominal working voltage with ±2 % tolerance, 60 Ω max differential resistance at I_Z = 5 mA, and 0.1 μA max reverse leakage at V_R = 8.0 V. It operates in general-purpose analog signal conditioning and power rail stabilization circuits requiring compact, surface-mount voltage reference.

For engineers reviewing the PDZ11B,115 datasheet, PDZ11B,115 pinout, PDZ11B,115 application, or PDZ11B,115 equivalent, this device is selected for stable 11 V clamping in low-current bias networks, ESD-protected sensor interfaces, and microcontroller reset circuitry where thermal resistance (R_th(j-a) = 340 K/W) and hard breakdown knee behavior are critical.

Technical Context

This Zener diode functions as a two-terminal shunt voltage regulator, maintaining a stable reverse-biased breakdown voltage across its cathode-anode terminals under controlled current conditions (I_Z = 5 mA). Its hard breakdown knee and low dynamic impedance ensure minimal voltage variation during transient load shifts.

Designed for operation up to +150 °C junction temperature, it leverages silicon planar technology with tin-plated FR4 PCB mounting to achieve R_th(j-sp) = 130 K/W and P_tot = 400 mW at T_amb ≤ 25 °C - derating linearly above that ambient per Figure 1.

Key Specifications

Pinout & Package

PDZ11B,115 uses the SOD323 (SC-76) surface-mount plastic package: 1.7 mm × 1.35 mm body, 0.4 mm nominal lead pitch, cathode marked by a bar on the top surface. Mounting requires reflow footprint per Figure 9 (0.6 mm solder land width, 0.95–1.65 mm length).

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX55C11-TR and MMSZ5240B-TP, PDZ11B,115 delivers superior combination of tight tolerance, low dynamic impedance, SMD scalability, and surge resilience - making it optimal for modern high-density, low-power embedded regulation where board space and reliability are constrained.

Availability

PDZ11B,115 is available at Aetrix Electronics and suitable for microcontroller reset circuits, sensor bias references, ESD-protected analog inputs, and low-power power rail clamps requiring stable component supply with guaranteed long-term continuity.

Supply support for PDZ11B,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 semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in advanced packaging and automotive-grade qualification.

PDZ11B,115 belongs to the PDZ-B series of low-power Zener diodes engineered specifically for precision voltage regulation in space-constrained consumer, industrial, and computing applications - emphasizing small footprint, tight tolerance, and hard breakdown characteristics.

FAQ

What is the maximum continuous reverse current for stable 11 V regulation?

The PDZ11B,115 achieves stable regulation at I_Z = 5 mA, with maximum recommended continuous reverse current limited to 100 mA per absolute maximum ratings. At 100 mA, forward voltage rises to 1.1 V, and power dissipation reaches 110 mW - well within the 400 mW total limit at 25 °C ambient, provided thermal derating is applied above that temperature.

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

The positive temperature coefficient means V_Z increases by 7.4 mV per degree Celsius rise in junction temperature. In precision references, this drift must be compensated using complementary negative-coefficient components or calibrated software offsets. For non-critical clamping, it provides inherent overvoltage margin at elevated temperatures.

Can PDZ11B,115 replace PDZ10B in existing designs?

Yes, with verification of system-level voltage margin: PDZ11B,115 has V_Z = 10.78–11.22 V versus PDZ10B's 9.77–10.21 V - a ~1 V upward shift. This may raise clamping thresholds or reset voltages; confirm downstream IC tolerances and recalculate series current-limiting resistors to maintain target I_Z.

Is the SOD323 package compatible with standard reflow profiles?

Yes - the SOD323 package is qualified for lead-free reflow per J-STD-020. Recommended profile uses peak temperature ≤ 260 °C for ≤ 30 seconds, with ramp rates ≤ 3 °C/s pre- and post-peak. Figure 9 specifies 0.6 mm solder land width and 1.65 mm length for optimal wetting and mechanical reliability.