Nexperia USA Inc. HPZR-C15X

Overview

HPZR-C15X from Nexperia is a high-power Zener voltage regulator diode in CFP3 (SOD123W) package, designed for precision DC voltage clamping and regulation at 15 V nominal working voltage (14.4–15.9 V), with 4.1 W total power dissipation at T_sp = 75 °C and 30 kV ESD rating per IEC 61000-4-2 (contact discharge), used in industrial power supply rail protection and overvoltage suppression circuits.

For engineers reviewing the HPZR-C15X datasheet, HPZR-C15X pinout, HPZR-C15X application, or HPZR-C15X equivalent, this page delivers verified electrical parameters, thermal behavior under PCB mounting conditions, cathode/anode terminal mapping, real-world regulation tolerance (±5 %), and validated alternatives for 15 V Zener stabilization in space-constrained SMD designs.

Technical Context

This device operates as a two-terminal reverse-biased Zener diode, delivering stable 15 V regulation at I_Z = 1 mA with differential resistance R_Z = 13 Ω and reverse current I_R ≤ 0.1 μA at V_R = 12 V. Its thermal design relies on low R_th(j-sp) = 18 K/W to solder point for efficient heat transfer from junction to PCB cathode pad.

It supports non-repetitive surge handling up to 800 W (t_p ≤ 100 µs) and continuous operation up to 4100 mW at T_sp = 75 °C with zero lead length measurement condition, enabling robust transient suppression in 24 V system interfaces without derating penalties typical of standard SOD-123 devices.

Key Specifications

Pinout & Package

HPZR-C15X uses the CFP3 (SOD123W) surface-mount plastic package: 2.6 mm × 1.7 mm × 1.0 mm body, flat lead profile, cathode marked by bar on top surface.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 15 V Zener regulation applications.

Compared with BZX84-C15 and 1N4744A, HPZR-C15X delivers 4.1× higher power handling in an SMD footprint, 30× lower dynamic impedance than BZX84-C15, and integrated ESD hardening absent in both alternatives-making it optimal for modern high-density, high-reliability 15 V regulation.

Availability

HPZR-C15X is available at Aetrix Electronics and suitable for industrial power supply protection, automotive sensor interface clamping, PLC input conditioning, and DC-DC converter feedback stabilization requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for HPZR-C15X 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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.

The HPZR series belongs to Nexperia's high-power Zener regulator portfolio, engineered specifically for space-constrained SMD applications demanding >3 W dissipation, ultra-low leakage, and certified ESD robustness in harsh environments.

FAQ

What is the maximum continuous reverse current HPZR-C15X can regulate at 15 V?

HPZR-C15X regulates continuously at up to 273 mA (4100 mW ÷ 15 V) when mounted on FR4 PCB with 1 cm² cathode pad at T_sp = 75 °C. At 25 °C ambient on standard FR4, maximum continuous current is 64 mA (962 mW ÷ 15 V). Derating curves in Figure 9 confirm linear reduction between these points.

Does HPZR-C15X meet automotive qualification standards?

No-HPZR-C15X is not AEC-Q200 qualified. It is specified for industrial and general-purpose applications only. While its 30 kV ESD rating and 150 °C junction temperature support some automotive subsystems, Nexperia explicitly states non-automotive qualification in Section 14 of the datasheet and advises against use in safety-critical vehicle systems.

How does the CFP3 (SOD123W) package improve thermal performance over standard SOD-123?

The CFP3 variant features an extended cathode tab that increases copper contact area and reduces R_th(j-sp) to 18 K/W-versus ~60 K/W for standard SOD-123. This enables 4.1 W dissipation at T_sp = 75 °C, whereas standard SOD-123 Zeners typically max out at ~1.5 W under identical conditions.

Can HPZR-C15X replace 1N4744A in existing designs without layout changes?

No-HPZR-C15X uses CFP3 (SOD123W) footprint (2.6 mm × 1.7 mm), while 1N4744A uses DO-41 (5.2 mm × 2.7 mm). Direct replacement requires PCB redesign. However, its 15 V regulation, ±5 % tolerance, and 13 Ω R_Z match 1N4744A's electrical behavior, making it a functional upgrade when re-layout is feasible.