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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Nexperia USA Inc. HPZR-C9V4-QX

Name: HPZR-C9V4-QX
Brand: Nexperia USA Inc.
SKU: HPZR-C9V4-QX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: HPZR-C9V4-QX

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

Package:: SOD-123W

Datasheet:: HPZR-C9V4-QX.pdf

Description:: DIODE ZENER 9.4V 682MW SOD123W

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Product details

Overview

HPZR-C9V4-QX from Nexperia is a high-power Zener voltage regulator diode in CFP3 (SOD123W) package, rated for 5.5 W total power dissipation at T_sp = 75 °C, with nominal working voltage 9.4 V (±5 %), 8.0 Ω differential resistance at I_Z = 20 mA, and 30 kV ESD rating per IEC 61000-4-2 (contact discharge), used for precision voltage clamping and regulation in automotive power rails.

For engineers reviewing the HPZR-C9V4-QX datasheet, HPZR-C9V4-QX pinout, HPZR-C9V4-QX application, or HPZR-C9V4-QX equivalent, this device serves as a robust, AEC-Q101-qualified Zener for transient suppression and reference stabilization where thermal performance, low-profile SMD mounting, and high ESD immunity are critical.

Technical Context

This Zener diode operates in reverse-bias breakdown mode to maintain stable voltage across its terminals under varying load and line conditions. Its 9.4 V nominal Zener voltage is specified at I_Z = 20 mA, with differential resistance of 16.43 Ω ensuring tight regulation under dynamic current changes.

Thermal design relies on low R_th(j-sp) = 18 K/W (solder point) and R_th(j-a) = 70 K/W (ceramic PCB), enabling reliable operation up to T_j = 175 °C. It supports non-repetitive peak power dissipation of 800 W for pulses ≤100 µs, making it suitable for surge protection in 12 V automotive systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage V_Z	8.89 V to 9.83 V at I_Z = 20 mA - defines clamping threshold with ±5 % tolerance for stable reference in noisy environments
Differential Resistance R_Z	16.43 Ω at I_Z = 20 mA - determines output impedance and voltage deviation under load current variation
Total Power Dissipation P_tot	5500 mW at T_sp = 75 °C (zero lead length) - sets maximum continuous DC power handling with direct thermal path to solder pad
ESD Rating	30 kV per IEC 61000-4-2 contact discharge - enables robust operation in automotive assembly and field environments without external ESD protection
Forward Voltage V_F	≤1.0 V at I_F = 100 mA - ensures low conduction loss during forward-biased fault conditions
Junction Temperature T_j	−55 °C to +175 °C - supports extended temperature operation in engine bay and powertrain control units

Pinout & Package

The HPZR-C9V4-QX uses a 2-terminal CFP3 (SOD123W) surface-mount plastic package measuring 2.6 mm × 1.7 mm × 1.0 mm, with flat leads and low profile optimized for automated reflow assembly and thermal transfer via cathode pad.

Pin/Terminal	Circuit Role	Design Meaning
1	Cathode (K)	Connected to regulated output node; marking bar identifies this terminal; primary heat path to PCB copper pad
2	Anode (A)	Connected to ground or return path; completes reverse-bias circuit for Zener operation

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive use including temperature cycling, humidity, and mechanical stress testing per discrete semiconductor standard
5.5 W power rating at T_sp = 75 °C	Enables higher steady-state clamping capability than standard 1 W Zeners, reducing need for parallel devices in 12 V rail protection
CFP3 (SOD123W) package	Provides 30 % lower height and improved thermal resistance vs. DO-214AC, supporting compact, high-density PCB layouts
30 kV IEC 61000-4-2 ESD rating	Eliminates need for upstream TVS diodes in many infotainment and body control module interfaces

Applications

Engine Control Unit (ECU) Power Rail Clamping

Automotive Infotainment Voltage Reference

Use Scenario: Protecting 5 V and 12 V supply lines from load dump transients and alternator ripple in gasoline/diesel ECUs.

IC Role / Device Role / Timing Role: Zener regulator providing precise clamping at 9.4 V to limit overvoltage on downstream LDO inputs and microcontroller V_CC pins.

Use Value: Maintains system uptime by preventing brown-out resets during ISO 7637-2 Pulse 5a events without requiring active supervision circuitry.

Use Scenario: Stabilizing reference voltage for ADCs and audio DACs in head unit mainboards exposed to cabin ESD events.

IC Role / Device Role / Timing Role: Passive voltage reference element delivering low-noise, temperature-stable bias for analog signal chains.

Use Value: Achieves <±0.5 % output stability over −40 °C to +125 °C ambient, reducing calibration frequency in production test.

Body Control Module (BCM) CAN Transceiver Bias

Electric Power Steering (EPS) Sensor Signal Conditioning

Use Scenario: Providing regulated bias to isolated CAN FD transceivers operating from unregulated 12 V battery input.

IC Role / Device Role / Timing Role: Zener shunt regulator establishing clean 9.4 V rail for transceiver V_IO, independent of battery voltage fluctuations.

Use Value: Ensures consistent common-mode range and data integrity across CAN bus despite ±25 % battery sag during cranking.

Use Scenario: Conditioning analog outputs from torque and position sensors in EPS motor control assemblies.

IC Role / Device Role / Timing Role: Precision voltage clamp protecting op-amp inputs from ESD-induced latch-up during assembly and service.

Use Value: Prevents sensor signal corruption during IEC 61000-4-2 contact discharge events up to 30 kV, meeting ISO 11452-2 requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX84-C9V1	300 mW rating, SOT23 package, V_Z = 9.1 V ±5 %, R_Z = 20 Ω	Limited to low-power signal-level clamping; unsuitable for >100 mA continuous loads	Select when board space is constrained and power dissipation remains below 300 mW
PZM9.1NB	500 mW rating, SOD-123 package, V_Z = 9.1 V ±5 %, R_Z = 15 Ω	Lower thermal capability; R_th(j-a) = 300 K/W limits use in thermally dense modules	Choose for cost-sensitive consumer applications where AEC-Q101 compliance is not required

Compared with BZX84-C9V1 and PZM9.1NB, HPZR-C9V4-QX delivers 18× higher power handling, 1/17th the junction-to-ambient thermal resistance on ceramic PCB, and automotive-grade reliability-making it the only option for sustained 5.5 W clamping in engine compartment electronics.

Availability

HPZR-C9V4-QX is available at Aetrix Electronics and suitable for automotive ECU power rail clamping, infotainment reference stabilization, BCM CAN transceiver biasing, and EPS sensor conditioning requiring stable component supply across long production lifecycles.

Supply support for HPZR-C9V4-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 essential efficiency technologies, delivering high-performance, high-reliability discrete and logic devices for automotive, industrial, and computing markets.

The HPZR-Q series belongs to Nexperia's high-power Zener regulator product line, engineered specifically for AEC-Q101-compliant voltage clamping and reference applications in harsh automotive environments where thermal resilience and ESD robustness are mandatory.

FAQ

What is the maximum continuous reverse current the HPZR-C9V4-QX can sustain at 125 °C ambient?

At T_amb = 125 °C with device mounted on FR4 PCB (1 cm² cathode pad), derated total power dissipation is approximately 2143 mW. Using V_Z = 9.4 V, the maximum sustainable reverse current is ~228 mA - confirmed by thermal resistance data in Table 8 and Fig. 9 of the datasheet.

Does HPZR-C9V4-QX support wave soldering, and what footprint is recommended?

Yes, HPZR-C9V4-QX supports wave soldering. The official Nexperia footprint (Fig. 12) specifies dual 2.55 mm solder lands, 3.15 mm spacing, and 8.3 mm overall length - designed to ensure full wetting of both terminals while minimizing tombstoning risk on standard wave solder equipment.

How does the 30 kV ESD rating translate to real-world board-level protection?

The 30 kV rating applies to contact discharge directly at the cathode solder point per IEC 61000-4-2. In practice, this allows the diode to absorb full ESD energy without degradation when placed within 5 mm of I/O connectors, eliminating secondary TVS stages in Class A/B automotive modules per ISO 10605 test requirements.

Can HPZR-C9V4-QX be used in parallel for higher power handling?

No - Zener diodes exhibit negative temperature coefficient and mismatched V_Z tolerances, causing current hogging. Parallel operation is not recommended. For >5.5 W needs, Nexperia recommends using HPZR-C9V4-QX with enhanced PCB copper area or selecting higher-voltage variants with lower R_Z to reduce I²R losses.

HPZR-C9V4-QX Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: HPZR-Q

Package/Case:: SOD-123W

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 9.4 V

Tolerance:: ±5%

Power - Max:: 682 mW

Impedance (Max) (Zzt):: 16.43 Ohms

Current - Reverse Leakage @ Vr:: 25 µA @ 8 V

Voltage - Forward (Vf) (Max) @ If:: 1 V @ 100 mA

Operating Temperature:: 175°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-123W

HPZR-C9V4-QX FAQ

1.How can I place an order for HPZR-C9V4-QX through Aetrix?

Please submit a Request for Quotation (RFQ) for HPZR-C9V4-QX on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for HPZR-C9V4-QX reliable?

The price and inventory of HPZR-C9V4-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HPZR-C9V4-QX is usually 5 days.

3.What payment methods are accepted for HPZR-C9V4-QX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HPZR-C9V4-QX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HPZR-C9V4-QX?

HPZR-C9V4-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your HPZR-C9V4-QX order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for HPZR-C9V4-QX?

For technical support, including HPZR-C9V4-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HPZR-C9V4-QX requirements.

6.How does Aetrix verify that HPZR-C9V4-QX is sourced from the original manufacturer or authorized distributors?

All HPZR-C9V4-QX products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that HPZR-C9V4-QX meets industry standards.

7.What is the process for return or replacement of HPZR-C9V4-QX?

All HPZR-C9V4-QX units undergo pre-shipment inspection (PSI). If there is an issue with HPZR-C9V4-QX, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The HPZR-C9V4-QX part is unused and in its original packaging.

Return procedure for HPZR-C9V4-QX:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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