Nexperia USA Inc. PDZ2.4B,115

Overview

PDZ2.4B,115 from Nexperia is a single low-power Zener diode in SOD323 (SC-76) package, designed for precision voltage regulation at 2.43–2.63 V nominal Zener voltage with ±2 % tolerance, 50 Ω max differential resistance at I_Z = 5 mA, and 1000 µA max reverse leakage at I_Z = 0.5 mA. It operates in general-purpose analog signal conditioning and low-current reference circuits.

For engineers reviewing the PDZ2.4B,115 datasheet, PDZ2.4B,115 pinout, PDZ2.4B,115 application, or PDZ2.4B,115 equivalent, key selection criteria include Zener voltage accuracy, low dynamic impedance at 5 mA, thermal resistance (R_th(j-a) = 340 K/W), cathode-marked SOD323 footprint compatibility, and FR4 PCB power derating behavior.

Technical Context

This Zener diode functions as a two-terminal shunt voltage regulator, maintaining stable output voltage across variable load currents by operating in reverse breakdown. Its hard breakdown knee and low leakage (<1000 µA at 0.5 mA) enable reliable clamping in low-power biasing and protection circuits.

Designed for surface-mount use on standard FR4 PCBs, it delivers 400 mW total power dissipation at T_amb ≤ 25 °C with junction temperature limited to +150 °C. Thermal resistance from junction to ambient is 340 K/W, requiring derating above 25 °C per the published curve.

Key Specifications

Pinout & Package

The PDZ2.4B,115 is housed in a compact SOD323 (SC-76) plastic surface-mount package measuring 1.8 × 1.35 × 0.95 mm. The cathode is marked by a visible bar on the device top surface.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX384-B2V4 and MMSZ4678T1G, PDZ2.4B,115 offers superior voltage accuracy (±2 % vs ±5 %), lower dynamic impedance (50 Ω vs ≥90 Ω), and optimized thermal performance on FR4-making it preferred for precision analog biasing where board space and regulation stability are constrained.

Availability

PDZ2.4B,115 is available at Aetrix Electronics and suitable for low-power voltage reference, I/O protection, signal translation, and current-sense bias applications requiring stable component supply and consistent parametric performance across production lots.

Supply support for PDZ2.4B,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 specializing in high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified and industrial-grade components.

The PDZ-B series targets general-purpose voltage regulation in consumer, industrial, and computing systems, emphasizing small-footprint reliability, tight Zener tolerance, and robust thermal behavior on standard PCBs.

FAQ

What is the maximum continuous reverse current the PDZ2.4B,115 can handle without degradation?

The PDZ2.4B,115 supports up to 200 mA continuous forward current (I_F), but its Zener operation relies on controlled reverse current. At 25 °C ambient, it sustains 5 mA Zener test current indefinitely; sustained reverse current must remain within 400 mW power limit-e.g., ≤165 mA at 2.43 V-while observing thermal derating above 25 °C per Figure 1.

How does the −1.6 mV/K temperature coefficient affect circuit accuracy over −40 °C to +85 °C?

Over a 125 °C range, the Zener voltage shifts by approximately −200 mV (−1.6 mV/K × 125 K), resulting in a relative error of ~8 % of nominal 2.4 V. For high-stability designs, this requires compensation via resistor networks or selection of higher-V_Z variants with positive tempcos to cancel drift.

Can PDZ2.4B,115 be used in series or parallel configurations for higher voltage or current handling?

Series connection is viable for higher reference voltages (e.g., two PDZ2.4B units yield ~4.8 V), but mismatched tempcos and tolerances degrade overall accuracy. Parallel use is strongly discouraged-minor V_Z differences cause current hogging and thermal runaway due to negative resistance characteristics in breakdown.

Is the SOD323 footprint compatible with reflow soldering per JEDEC J-STD-020?

Yes-the PDZ2.4B,115's SOD323 package meets JEDEC J-STD-020D moisture sensitivity level 1 and is qualified for standard lead-free reflow profiles. Figure 9 specifies 0.6 mm solder land width and 0.95 mm pad-to-pad spacing; peak temperature must not exceed 260 °C for ≤30 seconds to avoid package delamination.