Nexperia USA Inc. HPZR-C14X

Overview

HPZR-C14X from Nexperia is a high-power Zener voltage regulator diode in CFP3 (SOD123W) package, designed for precision DC voltage clamping and regulation at 13.3 V to 14.7 V nominal working voltage with ±5 % tolerance. It delivers 4.1 W total power dissipation at Tsp = 75 °C (zero lead length), supports 800 W non-repetitive peak reverse power (tp ≤ 100 µs), and features 30 kV ESD rating per IEC 61000-4-2 (contact discharge), making it suitable for industrial power supply rail protection and overvoltage suppression in compact SMD designs.

For engineers reviewing the HPZR-C14X datasheet, HPZR-C14X pinout, HPZR-C14X application, or HPZR-C14X equivalent, key selection criteria include its 14 V nominal Zener voltage at IZ = 1 mA, 2.5 µA max reverse current, 12 Ω differential resistance at IZ = 20 mA, and thermal resistance of 18 K/W junction-to-solder-point - critical for thermal design in high-density PCB layouts with FR4 or ceramic substrates.

Technical Context

This device operates as a two-terminal, silicon planar Zener diode optimized for stable voltage reference and transient overvoltage clamping in low-current regulation circuits. Its electrical behavior is defined by sharp reverse breakdown at 13.3–14.7 V with tightly controlled dynamic impedance (12 Ω typical at 20 mA), enabling predictable clamping performance under varying load and temperature conditions.

The CFP3 package integrates a thermally enhanced cathode tab directly soldered to PCB copper, achieving Rth(j-sp) = 18 K/W - significantly lower than standard SOD-123 - supporting sustained 4.1 W DC dissipation when mounted on a 1 cm² cathode pad. Its 30 kV ESD robustness ensures reliability in handling-sensitive manufacturing and field-deployed equipment without additional protection circuitry.

Key Specifications

Pinout & Package

HPZR-C14X uses the CFP3 (SOD123W) surface-mount plastic package: 2.6 mm × 1.7 mm × 1.0 mm body, flat lead profile, cathode marked by a bar on the top surface. The package features an exposed cathode tab for enhanced thermal conduction to PCB copper.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C15 and MMSZ5241B, HPZR-C14X delivers 8× higher continuous power, 25× lower thermal resistance, and 8× greater ESD robustness - making it uniquely suited for industrial and automotive power rail protection where reliability under thermal and electrical stress is non-negotiable.

Availability

HPZR-C14X is available at Aetrix Electronics and suitable for industrial power supply protection, automotive body control module reference clamping, telecom DC-DC converter feedback stabilization, and medical diagnostic equipment overvoltage suppression requiring stable component supply across extended temperature ranges and high-reliability production cycles.

Supply support for HPZR-C14X 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-performance, reliable discrete, logic, and MOSFET devices, serving automotive, industrial, and consumer markets with scalable manufacturing and rigorous quality systems.

The HPZR series belongs to Nexperia's high-power Zener regulator portfolio, engineered specifically for thermally demanding SMD applications where traditional Zeners fail due to inadequate power density or ESD vulnerability.

FAQ

What is the maximum continuous current HPZR-C14X can regulate at 25 °C ambient?

At Tamb = 25 °C with device mounted on FR4 PCB (single-sided copper, 1 cm² cathode pad), HPZR-C14X supports up to 400 mA forward current per absolute maximum ratings. However, for stable Zener operation at 14 V, practical continuous regulation current is limited to ~290 mA to maintain junction temperature below 150 °C under worst-case thermal conditions.

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

The CFP3 (SOD123W) package features an enlarged, exposed cathode tab that bonds directly to PCB copper, reducing Rth(j-sp) to 18 K/W - versus ~220 K/W for standard SOD-123 in free air. This enables 4.1 W DC dissipation at Tsp = 75 °C, compared to <0.5 W for conventional equivalents under identical mounting conditions.

Can HPZR-C14X replace a 1N4742A in existing designs?

No - the 1N4742A is a through-hole DO-41 device rated for 1 W at 25 °C with Rth(j-a) ≈ 50 K/W. HPZR-C14X is SMD-only, offers 4.1 W at elevated temperature, and requires re-optimization of PCB thermal pads and layout. Direct replacement would cause thermal runaway unless the footprint and copper area are redesigned to match CFP3's thermal requirements.

Is HPZR-C14X qualified for automotive applications per AEC-Q200?

No - HPZR-C14X is not AEC-Q200 qualified. Nexperia explicitly states in the legal disclaimers that unless otherwise specified, HPZR series devices are non-automotive qualified. For automotive use, engineers must select AEC-Q200-compliant alternatives such as the PZUxxL3A series, which undergo extended temperature cycling and humidity testing.