Nexperia USA Inc. PDZ24B,115

Overview

PDZ24B,115 from Nexperia is a single silicon Zener diode designed for low-power voltage regulation in space-constrained SMD applications, with a nominal Zener voltage of 24.3 V to 24.78 V at I_Z = 5 mA, ±2 % tolerance, 120 Ω maximum differential resistance, and 0.05 μA maximum reverse leakage at V_R = 19 V - deployed in power supply reference rails and overvoltage protection circuits.

For engineers reviewing the PDZ24B,115 datasheet, PDZ24B,115 pinout, PDZ24B,115 application, or PDZ24B,115 equivalent, key selection criteria include Zener voltage accuracy at low test current (5 mA), thermal stability (SZ = +20.4 mV/K), junction-to-solder-point thermal resistance (130 K/W), and SOD323 package compatibility with high-density PCB layouts.

Technical Context

This Zener diode operates in reverse breakdown mode to maintain stable DC voltage under varying load or input conditions. Its hard breakdown knee and low dynamic impedance (120 Ω max at 5 mA) ensure tight regulation even with modest bias currents, while its negative temperature coefficient below 5 V transitions to positive above ~5 V - PDZ24B,115 exhibits +20.4 mV/K drift, enabling predictable compensation in temperature-sensitive references.

Designed for surface-mount assembly on FR4 PCBs with standard footprint, it supports continuous forward current up to 200 mA and non-repetitive peak reverse surge current of 1.3 A (100 µs pulse). Junction temperature is rated to +150 °C, with thermal resistance from junction to ambient at 340 K/W under defined board conditions.

Key Specifications

Pinout & Package

PDZ24B,115 is housed in a SOD323 (SC-76) plastic surface-mount package measuring 1.8 mm × 1.35 mm × 0.95 mm, with cathode indicated by a marking bar on the device body.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX384-B24,115, PDZ24B,115 trades ±1 % accuracy and lower r_dif for +200 mW power headroom and broader thermal design latitude; versus MMBZ5242BS-7-F, it delivers tighter tolerance, lower leakage, and superior thermal performance in identical board area.

Availability

PDZ24B,115 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and IoT sensor nodes requiring stable component supply with consistent Zener voltage performance across temperature and lifetime.

Supply support for PDZ24B,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 logic, discrete, and MOSFET devices, with manufacturing rooted in process efficiency and automotive-grade quality systems.

PDZ24B,115 belongs to the PDZ-B series of low-power Zener diodes engineered for general-purpose voltage regulation in cost-sensitive, space-constrained consumer and industrial electronics - emphasizing manufacturability, consistency, and SMD assembly readiness.

FAQ

What is the maximum continuous reverse current the PDZ24B,115 can sustain without degradation?

The PDZ24B,115 does not specify a maximum continuous reverse (Zener) current; instead, operation is limited by total power dissipation. At 24.5 V nominal V_Z, the absolute maximum continuous Zener current is approximately 16.3 mA (400 mW ÷ 24.5 V), assuming no ambient temperature derating and ideal heat sinking per the FR4 PCB condition.

Can PDZ24B,115 be used in series or parallel configurations for higher voltage or current capability?

Series connection is feasible for higher clamping voltage but requires matched units to avoid uneven voltage sharing; parallel use is strongly discouraged due to negative thermal feedback and current hogging - each diode must be individually biased to ensure stable operation within its 400 mW limit.

How does the +20.4 mV/K temperature coefficient impact long-term stability in a 24 V reference circuit?

A +20.4 mV/K coefficient means V_Z increases by ~20.4 mV per °C rise in junction temperature. Over a 100 °C range (−40 °C to +60 °C ambient, assuming ~30 °C self-heating), this yields ~2.04 V drift - requiring either thermal compensation or system-level calibration if sub-1 % accuracy is mandated across temperature.

Is PDZ24B,115 compliant with AEC-Q200 or automotive qualification standards?

No - PDZ24B,115 is not AEC-Q200 qualified. Nexperia explicitly states in the legal disclaimers that unless designated "automotive qualified" in the data sheet, products are unsuitable for automotive safety-critical or life-critical systems, and no automotive stress testing or qualification has been performed.