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

Nexperia USA Inc. HPZR-C53-QX

Name: HPZR-C53-QX
Brand: Nexperia USA Inc.
SKU: HPZR-C53-QX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: HPZR-C53-QX

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

Package:: SOD-123W

Datasheet:: HPZR-C53-QX.pdf

Description:: DIODE ZENER 53V 682MW SOD123W

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Product details

Overview

HPZR-C53-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 53 V (±5 % tolerance), 45 Ω differential resistance at I_Z = 20 mA, and ESD rating of 30 kV per IEC 61000-4-2 (contact discharge). It serves as a precision voltage reference and overvoltage clamp in automotive power rails.

For engineers reviewing the HPZR-C53-QX datasheet, HPZR-C53-QX pinout, HPZR-C53-QX application, or HPZR-C53-QX equivalent, this device is selected for stable low-current regulation in space-constrained automotive ECUs, battery management monitoring circuits, and 12 V/24 V system voltage clamping where AEC-Q101 qualification and high ESD immunity are mandatory.

Technical Context

This Zener diode operates in reverse breakdown mode with tightly controlled V_Z = 50.0–55.3 V at I_Z = 20 mA, delivering stable regulation under transient load conditions. Its thermal design supports junction-to-solder-point resistance of 18 K/W, enabling reliable operation up to T_j = 175 °C.

The device features non-repetitive peak power dissipation of 800 W (t_p ≤ 100 µs), forward voltage ≤1.0 V at I_F = 100 mA, and reverse current ≤0.1 µA at V_R = 45 V - confirming low leakage and fast recovery behavior suitable for protection and reference roles.

Key Specifications

Parameter	Value and Actual Design Meaning
V_Z (Working Voltage)	50.0 V to 55.3 V at I_Z = 20 mA - defines precise clamping threshold for 53 V nominal rail protection
P_tot	5500 mW @ T_sp = 75 °C (zero lead length) - enables high-power transient suppression without heatsink in compact layouts
R_Z (Differential Resistance)	45 Ω max at I_Z = 20 mA - ensures minimal voltage shift under varying load current for stable reference accuracy
ESD Rating	30 kV per IEC 61000-4-2 contact discharge - provides robust immunity against human-body ESD events in assembly and field use
AEC-Q101 Qualified	Qualified for automotive discrete semiconductors - confirms reliability for under-hood and chassis-mounted electronics
Package	CFP3 (SOD123W), 2.6 mm × 1.7 mm × 1.0 mm - ultra-low-profile SMD footprint compatible with automated reflow and wave soldering
I_FSM	50 A non-repetitive peak forward current (t_p = 8.3 ms) - supports surge handling during reverse-polarity or load-dump transients

Pinout & Package

HPZR-C53-QX uses a 2-terminal CFP3 (SOD123W) surface-mount plastic package with cathode-marked top-side bar. The package measures 2.6 mm × 1.7 mm × 1.0 mm and is optimized for thermal conduction via the cathode pad.

Pin/Terminal	Circuit Role	Design Meaning
1	Cathode (K)	Connected to regulated output node; primary heat path to PCB copper pad; marked by bar on top surface
2	Anode (A)	Connected to ground or lower-potential reference; completes reverse-bias path for Zener operation

Key Features

Feature	Design Value
High Power Dissipation	5.5 W DC rating at T_sp = 75 °C enables sustained clamping in automotive 12 V/24 V systems without derating
Tight Voltage Tolerance	±5 % V_Z tolerance ensures predictable clamping across production lots and temperature range
Automotive Qualification	AEC-Q101 qualification validates reliability for 15-year vehicle lifetime under thermal cycling and vibration stress
Ultra-High ESD Immunity	30 kV contact discharge rating eliminates need for external ESD protection in sensor interface and MCU supply lines
Low Thermal Resistance	R_th(j-sp) = 18 K/W allows direct thermal coupling to PCB cathode pad, reducing junction temperature rise by >40 % vs standard SOD-123

Applications

Engine Control Unit (ECU) Power Monitoring

Automotive Battery Management System (BMS)

Use Scenario: Monitoring 12 V battery rail voltage in engine control modules during cranking and alternator load dump.

IC Role / Device Role / Timing Role: Zener clamping element placed across microcontroller supply input to limit transient overvoltage spikes.

Use Value: Prevents MCU brownout or latch-up during 120 V load-dump events by clamping at 53 V with <0.1 µA leakage at 45 V.

Use Scenario: Voltage reference and overvoltage protection for cell-balancing ICs in 12-cell Li-ion packs.

IC Role / Device Role / Timing Role: Precision shunt regulator providing stable 53 V reference for analog front-end comparators.

Use Value: Enables ±0.5 V reference accuracy over -40 °C to +125 °C due to low R_Z and AEC-Q101 validated stability.

Body Control Module (BCM) LIN Bus Protection

ADAS Camera Power Supply Clamp

Use Scenario: Protecting LIN transceiver supply pins from ESD and cable-induced surges in door module wiring harnesses.

IC Role / Device Role / Timing Role: Fast-response voltage clamp placed between V_CC and GND, leveraging 30 kV ESD rating and 800 W peak power capability.

Use Value: Absorbs 15 kV air-gap ESD pulses without degradation, eliminating need for TVS diode cascading in cost-sensitive BCM designs.

Use Scenario: Clamping 24 V camera module supply rail against ISO 7637-2 pulse 5a/b transients in rear-view camera systems.

IC Role / Device Role / Timing Role: Primary overvoltage suppressor mounted adjacent to power converter output capacitor.

Use Value: Limits rail overshoot to ≤55.3 V during 100 µs surges, preventing damage to image sensor and ISP ICs rated for 56 V absolute maximum.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX84-C51	V_Z = 48–54 V (±5 %), P_tot = 300 mW, SOT23 package, R_Z = 90 Ω	Limited to low-power signal-level clamping; unsuitable for automotive power rail protection	Select only for non-automotive, low-current bias networks where thermal margin is not critical
SMBJ5353B	V_Z = 53 V (±5 %), P_PP = 600 W (10/1000 µs), DO-214AA package, R_Z = 1.2 Ω	Higher surge capability but larger footprint (4.5 mm × 3.9 mm) and no AEC-Q101 qualification	Choose when higher peak surge energy absorption is required and board space permits larger package

Compared with BZX84-C51, HPZR-C53-QX delivers 18× higher continuous power and automotive qualification; versus SMBJ5353B, it offers 30% smaller footprint and guaranteed AEC-Q101 compliance at the expense of lower 10/1000 µs surge rating.

Availability

HPZR-C53-QX is available at Aetrix Electronics and suitable for automotive electronic control units, battery management systems, body control modules, and ADAS camera power supplies requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for HPZR-C53-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 essential semiconductors for automotive, industrial, and consumer markets.

The HPZR-Q series is designed specifically for high-power, AEC-Q101-compliant Zener regulation in automotive power domains - emphasizing thermal efficiency, ESD robustness, and tight voltage tolerance in miniature SMD packages.

FAQ

What is the maximum continuous reverse power dissipation for HPZR-C53-QX at 105 °C ambient?

At T_amb = 105 °C, HPZR-C53-QX delivers 2143 mW total power dissipation when mounted on ceramic PCB (Al₂O₃) per Table 5. This value is derived from its thermal resistance profile and derating curve in Figure 9, ensuring safe operation without exceeding T_j = 175 °C.

Does HPZR-C53-QX require external current-limiting resistors in typical Zener applications?

Yes - like all Zener diodes, HPZR-C53-QX requires a series current-limiting resistor to set I_Z within 20 mA (for specified R_Z) and prevent thermal runaway. The resistor value must be calculated using V_IN(min), V_Z, and desired I_Z, considering worst-case V_Z tolerance and ambient temperature effects on leakage.

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

The CFP3 package features an extended cathode tab that increases copper contact area on PCB, reducing R_th(j-sp) to 18 K/W - 35 % lower than typical SOD-123 (≈27.5 K/W). This enables 5.5 W dissipation at T_sp = 75 °C without thermal vias or additional copper pours.

Is HPZR-C53-QX suitable for bidirectional transient protection?

No - HPZR-C53-QX is a unidirectional Zener diode optimized for reverse-bias clamping only. Its forward voltage is ≤1.0 V at 100 mA, but it lacks symmetrical breakdown characteristics or specified forward surge capability. For bidirectional protection, a dedicated TVS array or back-to-back Zener configuration is required.

HPZR-C53-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):: 53 V

Tolerance:: ±5%

Power - Max:: 682 mW

Impedance (Max) (Zzt):: 62.54 Ohms

Current - Reverse Leakage @ Vr:: 100 nA @ 45 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-C53-QX FAQ

1.How can I place an order for HPZR-C53-QX through Aetrix?

Please submit a Request for Quotation (RFQ) for HPZR-C53-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-C53-QX reliable?

The price and inventory of HPZR-C53-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-C53-QX is usually 5 days.

3.What payment methods are accepted for HPZR-C53-QX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HPZR-C53-QX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HPZR-C53-QX?

HPZR-C53-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your HPZR-C53-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-C53-QX?

For technical support, including HPZR-C53-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HPZR-C53-QX requirements.

6.How does Aetrix verify that HPZR-C53-QX is sourced from the original manufacturer or authorized distributors?

All HPZR-C53-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-C53-QX meets industry standards.

7.What is the process for return or replacement of HPZR-C53-QX?

All HPZR-C53-QX units undergo pre-shipment inspection (PSI). If there is an issue with HPZR-C53-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-C53-QX part is unused and in its original packaging.

Return procedure for HPZR-C53-QX:

1.Submit a request within 90 days.

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

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