Nexperia USA Inc. PZU12B2A,115

Overview

PZU12B2A,115 from Nexperia is a precision Zener voltage regulator diode in SOD323 (SC-76) package, designed for stable 12 V reference and overvoltage protection in low-power analog circuits. It delivers ±2 % tolerance (B2 series), 80 Ω maximum differential resistance at I_Z = 5 mA, 10 nA reverse current at I_Z = 0.5 mA, and operates up to 150 °C junction temperature - used in power supply feedback loops and sensor biasing networks.

For engineers reviewing the PZU12B2A,115 datasheet, PZU12B2A,115 pinout, PZU12B2A,115 application, or PZU12B2A,115 equivalent, this page provides verified Zener parameters including V_Z = 12 V nominal, rdif ≤ 80 Ω, IR ≤ 10 nA, SZ = +3 mV/K, and thermal resistance R_th(j-sp) = 55 K/W - critical for low-drift voltage reference design and surge-tolerant clamping.

Technical Context

This Zener diode operates in reverse breakdown with hard knee characteristics optimized for fast switching and noise reduction per AN90031. Its B2 tolerance grade ensures tight 11.74–12.24 V regulation window at 5 mA test current, and its low 10 nA leakage at 0.5 mA supports high-impedance sensing nodes.

The device uses silicon planar technology in a 1.7 mm × 1.25 mm × 0.95 mm SOD323 package with cathode-marked terminal layout. Thermal resistance from junction to solder point is 55 K/W, enabling reliable operation under pulsed 40 W non-repetitive surges (tp = 100 µs) without derating on standard FR4 PCBs.

Key Specifications

Pinout & Package

Package: SOD323 (SC-76), surface-mount plastic case measuring 1.7 mm × 1.25 mm × 0.95 mm with 1.3 mm lead pitch. Cathode identified by marking bar.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PZU12B2A,115, the PZU12B3A,115 trades lower dynamic impedance for tighter initial tolerance, while the BZX84-C12,215 sacrifices both leakage and impedance performance for broader availability and lower unit cost - making PZU12B2A,115 optimal for mid-tier precision analog designs requiring balanced accuracy, stability, and noise.

Availability

PZU12B2A,115 is available at Aetrix Electronics and suitable for power supply feedback reference, sensor bias voltage source, overvoltage clamp protection, and temperature-compensated reference stack applications requiring stable component supply and traceable sourcing.

Supply support for PZU12B2A,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-qualified components.

The PZUxBA series belongs to Nexperia's general-purpose Zener regulator product line, engineered specifically for surface-mounted voltage reference and protection in space-constrained industrial and consumer electronics.

FAQ

What is the exact Zener voltage range for PZU12B2A,115 at 5 mA test current?

The guaranteed Zener voltage range is 11.74 V to 12.24 V at I_Z = 5 mA and T_j = 25 °C, per the B2 tolerance grade defined in Table 8 of the datasheet. This 0.5 V window reflects ±2 % of the nominal 12 V rating and is validated across production lots using automated parametric testing.

Can PZU12B2A,115 be used in place of PZU12B1A,115?

Yes - both share identical V_Z nominal (12 V), package (SOD323), and thermal specs, but PZU12B2A,115 has a wider tolerance band (±2 % vs. ±1 % for B1). The B2 variant offers lower cost and sufficient accuracy for most feedback and clamp applications where ±1 % is not required.

What is the maximum continuous power dissipation for PZU12B2A,115 on a standard FR4 PCB?

At T_amb ≤ 25 °C with single-sided copper, tin-plated, and standard footprint, P_tot is rated at 320 mW. Derating begins linearly above 25 °C at 2.55 mW/°C, reaching 0 mW at 150 °C ambient - consistent with R_th(j-a) = 390 K/W in free air per Table 6.

Does PZU12B2A,115 meet RoHS and REACH compliance requirements?

Yes - PZU12B2A,115 is manufactured per Nexperia's standard environmental compliance program, fully compliant with EU RoHS Directive 2011/65/EU (Pb-free, Cd-free, Hg-free, Cr⁶⁺-free, PBB/PBDE-free) and REACH SVHC thresholds, with full declaration available in the manufacturer's material compliance database.