Nexperia USA Inc. HPZR-C8V2-QX

Overview

HPZR-C8V2-QX from Nexperia is a high-power Zener voltage regulator diode in CFP3 (SOD123W) package, designed for precision voltage clamping and regulation in automotive power rails. It delivers 7.78 V to 8.60 V nominal Zener voltage at I_Z = 10 mA, with 7.0 Ω differential resistance, 100 µA max reverse current, and 5.5 W total DC power dissipation at T_sp = 75 °C - used in engine control unit (ECU) supply rail protection.

For engineers reviewing the HPZR-C8V2-QX datasheet, HPZR-C8V2-QX pinout, HPZR-C8V2-QX application, or HPZR-C8V2-QX equivalent, key selection criteria include Zener voltage tolerance (±5 %), ESD robustness (30 kV contact discharge per IEC 61000-4-2), AEC-Q101 qualification, thermal resistance (18 K/W junction-to-solder-point), and non-repetitive peak power capability (800 W).

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 design supports low-leakage operation (IR ≤ 100 µA at VR), tight V_Z tolerance (±5 %), and high surge immunity via 800 W non-repetitive peak power handling at t_p ≤ 100 µs.

Thermal performance is defined by R_th(j-sp) = 18 K/W (measured at cathode solder point), enabling reliable operation up to T_j = 175 °C. The CFP3 package's flat lead geometry ensures low-inductance mounting and efficient heat transfer to PCB copper pads.

Key Specifications

Pinout & Package

HPZR-C8V2-QX uses the CFP3 (SOD123W) surface-mount plastic package: 2.6 mm × 1.7 mm × 1.0 mm body, flat leads, cathode-marked with bar, optimized for thermal conduction via cathode pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C8V2 and MMSZ5236B, HPZR-C8V2-QX uniquely combines AEC-Q101 qualification, 5.5 W DC power handling, 800 W surge capability, and 18 K/W thermal resistance - making it the only option for high-reliability automotive clamping where both steady-state power and transient energy must be managed on a single device.

Availability

HPZR-C8V2-QX is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera power conditioning, and electric power steering systems requiring stable component supply with automotive-grade traceability and long-term lifecycle support.

Supply support for HPZR-C8V2-QX 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 components and advanced packaging technologies.

The HPZR-Q series belongs to Nexperia's automotive Zener regulator product line, engineered specifically for robust voltage clamping in harsh automotive environments - emphasizing surge resilience, thermal efficiency, and AEC-Q101 compliance over generic regulation.

FAQ

What is the maximum continuous power dissipation for HPZR-C8V2-QX at 75 °C solder point temperature?

The maximum continuous DC power dissipation is 5500 mW when measured at zero lead length and T_sp = 75 °C, as specified in Table 5 of the datasheet. This value assumes direct thermal coupling to a 1 cm² cathode pad on FR4 PCB and is derated linearly above 75 °C per Figure 9.

Does HPZR-C8V2-QX meet automotive qualification standards?

Yes - HPZR-C8V2-QX is fully qualified to AEC-Q101 Rev. G for discrete semiconductors, covering stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per IEC 61000-4-2. It is recommended for automotive applications including powertrain, chassis, and ADAS subsystems.

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

The CFP3 package features wider, flattened leads and an exposed cathode tab that increases copper contact area on PCBs. This yields R_th(j-sp) = 18 K/W - 3× better than typical SOD-123 (≈55–60 K/W) - enabling 5.5 W dissipation without heatsinks, critical for space-constrained automotive modules.

What is the Zener voltage test condition for HPZR-C8V2-QX, and why is it different from lower-voltage variants?

V_Z is specified at I_Z = 10 mA (Table 11), unlike 3–5 V types tested at 100 mA. This reflects optimal operating point for 8.2 V Zeners: lower test current avoids self-heating errors and aligns with typical bias currents in automotive reference circuits, ensuring stable, repeatable voltage regulation.