Nexperia USA Inc. HPZR-C23X

Overview

HPZR-C23X from Nexperia is a high-power Zener voltage regulator diode in CFP3 (SOD123W) package, designed for precision DC voltage clamping and regulation at 23 V nominal working voltage (V_Z = 22.2–24.5 V @ I_Z = 1 mA), 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-C23X datasheet, HPZR-C23X pinout, HPZR-C23X application, or HPZR-C23X equivalent, this page delivers verified thermal resistance (R_th(j-sp) = 18 K/W), differential impedance (R_Z = 35.51 Ω @ I_Z = 20 mA), reverse current (I_R ≤ 0.1 µA @ V_R = 18.9 V), non-repetitive peak power (P_ZSM = 800 W), and mounting-specific power derating curves - all critical for surge-tolerant, space-constrained SMD regulation designs.

Technical Context

This device operates as a two-terminal, silicon planar Zener diode optimized for stable reverse-bias voltage regulation under transient and steady-state conditions. Its CFP3 package enables low thermal resistance to solder point (18 K/W), supporting high pulse power handling without board-level heatsinking.

It exhibits tight ±5 % V_Z tolerance across the full 3.0–75 V range, with graded test currents (1 mA for ≥8.8 V types) ensuring predictable breakdown behavior in low-current regulation and reference applications where leakage and dynamic impedance directly impact stability.

Key Specifications

Pinout & Package

HPZR-C23X 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 Zener regulation applications.

Compared with BZX84-C24 and 1N5352B, HPZR-C23X uniquely combines SMD CFP3 footprint, 4.1 W DC power, 800 W pulse rating, and 30 kV ESD immunity - enabling compact, self-contained overvoltage protection without layout compromises or secondary components.

Availability

HPZR-C23X is available at Aetrix Electronics and suitable for industrial power supply protection, automotive body control module input clamping, IoT sensor node voltage reference, and medical diagnostic equipment overvoltage guard requiring stable component supply across extended temperature ranges (−55 °C to +150 °C).

Supply support for HPZR-C23X 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 leading Dutch semiconductor manufacturer specializing in high-performance, high-reliability discrete and logic devices, with global manufacturing and R&D centers.

The HPZR series belongs to Nexperia's high-power Zener regulator portfolio, engineered specifically for robust, low-profile SMD voltage clamping in automotive, industrial, and medical power systems where thermal efficiency and ESD resilience are critical.

FAQ

What is the maximum continuous power dissipation for HPZR-C23X at 75 °C solder point temperature?

The HPZR-C23X delivers 4100 mW of total power dissipation at T_sp = 75 °C under zero-lead-length measurement conditions, as confirmed in Table 4 of the official Nexperia datasheet Rev. 5. This value assumes direct thermal coupling from the cathode pad to a 1 cm² copper area on FR4 PCB.

How does the 1 mA Zener test current affect its use in low-current regulation circuits?

HPZR-C23X specifies V_Z at I_Z = 1 mA to align with ultra-low-quiescent-current applications such as battery-backed sensors or standby power rails. Its 0.1 µA reverse leakage at 18.9 V ensures minimal parasitic drain, and its 35.51 Ω dynamic impedance maintains regulation accuracy even below 100 µA operating current.

Can HPZR-C23X replace standard 1N4742A Zener diodes in existing designs?

No direct drop-in replacement: HPZR-C23X (CFP3/SOD123W) has different footprint, thermal path, and surge rating than 1N4742A (DO-41). While both regulate near 24 V, HPZR-C23X offers 4.1 W DC power vs. 1W, 800 W pulse vs. ~50 W, and 30 kV ESD vs. none. PCB layout and thermal design must be requalified.

What is the significance of R_th(j-sp) = 18 K/W in practical PCB layout?

R_th(j-sp) = 18 K/W means the junction-to-solder-point thermal resistance is exceptionally low, allowing >4 W power dissipation using only the cathode pad's 1 cm² copper area on standard FR4 - no internal layers or thermal vias required. This simplifies layout and reduces bill-of-materials versus alternatives needing external heatsinks or thermal pads.