Nexperia USA Inc. HPZR-C8V2X

Overview

HPZR-C8V2X from Nexperia is a high-power Zener voltage regulator diode in CFP3 (SOD123W) package, designed for precision DC voltage clamping and regulation at 8.2 V nominal working voltage with ±5 % tolerance. It delivers 4.1 W total power dissipation at T_sp = 75 °C, supports 100 µs non-repetitive peak power up to 800 W, and features 30 kV ESD rating per IEC 61000-4-2 (contact discharge), targeting overvoltage protection in industrial power supplies.

For engineers reviewing the HPZR-C8V2X datasheet, HPZR-C8V2X pinout, HPZR-C8V2X application, or HPZR-C8V2X equivalent, key selection criteria include its 7.78–8.60 V Zener voltage range at I_Z = 10 mA, 100 µA max reverse current, 7.0 Ω differential resistance at I_Z = 20 mA, thermal resistance of 18 K/W (junction-to-solder point), and compatibility with FR4 PCB mounting using standard SOD123W footprint.

Technical Context

This device operates as a two-terminal, silicon planar Zener diode optimized for stable voltage reference and transient suppression in low-current regulation circuits. Its design centers on tight V_Z tolerance (±5 %), low dynamic impedance (13.25 Ω typical), and robust thermal performance enabled by the CFP3 package's low-profile copper cathode tab.

The HPZR-C8V2X exhibits defined limiting values including 400 mA forward current, 50 A non-repetitive peak forward surge (8.3 ms half-sine), and 150 °C maximum junction temperature. Its thermal behavior is characterized by R_th(j-sp) = 18 K/W - measured at the cathode solder point - enabling reliable power handling under localized heatsinking conditions.

Key Specifications

Pinout & Package

HPZR-C8V2X uses the CFP3 (SOD123W) surface-mount plastic package: 2.6 mm × 1.7 mm × 1.0 mm body, flat lead profile, cathode-tab thermal interface, and marking bar indicating cathode polarity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C8V2 and 1N4736A, HPZR-C8V2X uniquely combines 4.1 W power handling, 13.25 Ω low dynamic impedance, and 30 kV ESD immunity in an SMD package - making it the sole option for high-reliability, high-power, production-ready Zener regulation in space-constrained industrial and automotive PCBs.

Availability

HPZR-C8V2X is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, medical sensor signal conditioning, and IoT edge node voltage regulation requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for HPZR-C8V2X 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 specializing in high-performance, energy-efficient logic, discrete, and MOSFET components, with manufacturing rooted in process technology leadership and automotive-grade reliability.

The HPZR series belongs to Nexperia's high-power Zener diode product line, engineered specifically for robust voltage regulation and transient suppression in industrial and automotive power systems where thermal performance and ESD resilience are critical.

FAQ

What is the maximum continuous power dissipation for HPZR-C8V2X at 25 °C ambient?

At T_amb ≤ 25 °C on an FR4 PCB with single-sided 1 cm² cathode copper pad, HPZR-C8V2X supports 962 mW total power dissipation. This value drops linearly with rising ambient or solder-point temperature, reaching 4100 mW only at T_sp = 75 °C under zero-lead-length test conditions.

Does HPZR-C8V2X require external current-limiting resistors in shunt regulator configurations?

Yes - like all Zener diodes, HPZR-C8V2X requires a series current-limiting resistor to set operating current within its specified I_Z range (10 mA typical). The resistor value must be calculated based on input voltage, desired V_Z, and worst-case load current to prevent exceeding 4.1 W dissipation or 400 mA forward current limits.

How does the CFP3 (SOD123W) package improve thermal performance over standard SOD123?

The CFP3 package features an extended cathode tab that serves as both electrical terminal and primary thermal conduction path. Its R_th(j-sp) = 18 K/W - measured directly at the solder point - is ~3× lower than standard SOD123 (typically >50 K/W), enabling significantly higher continuous power handling without additional heatsinking.

Can HPZR-C8V2X replace older 1N4736A Zener diodes in existing designs?

Direct replacement is possible only if the PCB layout accommodates the CFP3 (SOD123W) footprint and thermal management supports ≥4.1 W dissipation. Electrical parameters (V_Z, R_Z) are comparable, but HPZR-C8V2X offers superior ESD immunity (30 kV vs. unqualified), higher surge capability (800 W vs. ~500 W), and tighter tolerance - requiring validation of thermal margin and solder joint reliability.