Nexperia USA Inc. HPZR-C5V1X

Overview

HPZR-C5V1X from Nexperia is a high-power Zener voltage regulator diode in CFP3 (SOD123W) package, designed for precision low-current regulation at 5.1 V nominal working voltage (4.80–5.40 V), with 0.75 μA max reverse current at I_Z = 100 mA and 6.0 Ω typical differential resistance. It delivers 4.1 W total power dissipation at T_sp = 75 °C and supports ESD immunity up to 30 kV (IEC 61000-4-2 contact discharge), targeting overvoltage protection and reference stabilization in compact power rails.

For engineers reviewing the HPZR-C5V1X datasheet, HPZR-C5V1X pinout, HPZR-C5V1X application, or HPZR-C5V1X equivalent, key selection criteria include its ±5 % tolerance, 1 V max forward voltage at 100 mA, 800 W non-repetitive peak power capability, thermal resistance of 18 K/W (junction-to-solder point), and compatibility with FR4 PCB mounting using standardized 1 cm² cathode pad.

Technical Context

This device operates as a two-terminal silicon Zener diode optimized for stable DC voltage regulation under low-current conditions (IZ = 100 mA). Its design centers on tight V_Z control (4.80–5.40 V), ultra-low differential resistance (6.0 Ω), and robust thermal performance enabled by the CFP3 package's low-profile copper-cathode thermal path.

The HPZR-C5V1X meets IEC 61000-4-2 Level 4 ESD requirements (>30 kV contact), features a maximum forward voltage of 1 V at 100 mA, and sustains 50 A non-repetitive peak forward current (tp = 8.3 ms), making it suitable for transient-suppressed biasing and clamping in space-constrained industrial and consumer power circuits.

Key Specifications

Pinout & Package

HPZR-C5V1X 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. Thermal performance relies on direct cathode tab soldering to a 1 cm² copper pad on FR4 PCB.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C5V1 and MMSZ5231B, HPZR-C5V1X delivers 8× higher power handling, 2.8× lower dynamic impedance, and 4× greater ESD immunity-making it the sole option for thermally demanding, precision 5.1 V regulation in industrial and connected-device designs.

Availability

HPZR-C5V1X is available at Aetrix Electronics and suitable for industrial sensor biasing, USB port overvoltage clamp, and IoT node reference stabilization requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.

Supply support for HPZR-C5V1X 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 automotive-qualified and industrial-grade components.

The HPZR series targets high-power Zener regulation in space-constrained applications, addressing the need for robust, low-leakage, thermally efficient voltage references in industrial automation, consumer power management, and IoT infrastructure.

FAQ

What is the maximum continuous power dissipation for HPZR-C5V1X on a standard FR4 PCB?

HPZR-C5V1X delivers 4100 mW (4.1 W) total power dissipation when mounted on an FR4 PCB with a 1 cm² tin-plated copper pad on the cathode side and measured at solder point temperature T_sp = 75 °C. This rating assumes zero lead length and conforms to IEC 60134 absolute maximum limits.

Does HPZR-C5V1X require external heat sinking for 4.1 W operation?

No external heat sink is required. The CFP3 package's integrated cathode thermal tab transfers heat directly to the PCB copper pad. With a 1 cm² cathode pad on FR4, R_th(j-sp) is 18 K/W, enabling full 4.1 W dissipation at T_sp = 75 °C without additional thermal hardware.

How does the 30 kV ESD rating apply to real-world board layout?

The 30 kV rating applies to contact discharge per IEC 61000-4-2 at the cathode solder point. To maintain this performance, the cathode pad must be solid, unbroken, and ≥1 cm²; avoid narrow traces or thermal reliefs between the cathode and ground plane, and keep high-impedance nodes away from the diode terminals.

Can HPZR-C5V1X replace older 5.1 V Zeners like BZX55-C5V1 in existing designs?

Direct replacement is possible only if the PCB layout supports the CFP3 (SOD123W) footprint and thermal pad. Electrically, HPZR-C5V1X offers tighter V_Z tolerance (±5 % vs. ±6 %), lower R_Z (6.0 Ω vs. ~20 Ω), and higher power (4.1 W vs. 0.5 W), but requires verification of thermal relief and solder joint integrity due to its higher power density.