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

Nexperia USA Inc. HPZR-C4V7X

Name: HPZR-C4V7X
Brand: Nexperia USA Inc.
SKU: HPZR-C4V7X
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: HPZR-C4V7X

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

Package:: -

Datasheet:: HPZR-C4V7X.pdf

Description:: BIPOLAR DISCRETES

Quantity:: RFQ Add To RFQ list

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Inventory:3,000

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Product details

Overview

HPZR-C4V7X from Nexperia is a high-power Zener voltage regulator diode in CFP3 (SOD123W) package, designed for precision low-current regulation with nominal 4.7 V working voltage (4.40–5.00 V at I_Z = 100 mA), ≤1.1 µA reverse current, and 7.0 Ω differential resistance. It delivers 4.1 W total power dissipation at T_sp = 75 °C and supports ESD robustness up to 30 kV (IEC 61000-4-2 contact discharge), suitable for industrial power rail clamping and reference stabilization.

For engineers reviewing the HPZR-C4V7X datasheet, HPZR-C4V7X pinout, HPZR-C4V7X application, or HPZR-C4V7X equivalent, this page provides verified electrical parameters, thermal performance data, PCB mounting guidance for SOD123W footprint, and real-world use cases in overvoltage protection and analog reference circuits - all confirmed from Nexperia's Rev. 5 product data sheet dated 18 January 2024.

Technical Context

This device operates as a two-terminal silicon Zener diode with sharp reverse breakdown characteristics, optimized for stable DC voltage regulation under low-current conditions (I_Z = 100 mA). Its 7.0 Ω dynamic impedance ensures minimal output voltage variation across load changes, while the 1.1 µA maximum reverse leakage at rated V_Z enables high-impedance node stabilization.

The CFP3 package features a thermally enhanced cathode tab directly soldered to a 1 cm² copper pad on FR4 PCB, enabling 4.1 W DC power handling at 75 °C solder point temperature. Its 30 kV ESD rating and 50 A non-repetitive peak forward surge capability support rugged operation in noisy industrial environments without external protection circuitry.

Key Specifications

Parameter	Value and Actual Design Meaning
Nominal Zener Voltage	4.7 V (range 4.40–5.00 V at I_Z = 100 mA); defines precise regulation point for 5 V rail referencing
Differential Resistance	7.0 Ω (at I_Z = 100 mA); ensures <±35 mV output shift per ±250 mA load change
Reverse Current	≤1.1 µA (at V_R = 4.7 V); enables ultra-low quiescent current in battery-backed reference circuits
Total Power Dissipation	4100 mW @ T_sp = 75 °C (zero lead length); supports continuous operation in compact, thermally constrained layouts
ESD Rating	30 kV per IEC 61000-4-2 (contact discharge); eliminates need for external TVS in Class 4 ESD systems
Forward Voltage	≤1.0 V at I_F = 100 mA; allows bidirectional clamping when used with series resistor in AC-coupled protection
Thermal Resistance j-sp	18 K/W (cathode tab to solder point); enables direct thermal path to PCB copper for passive cooling

Pinout & Package

HPZR-C4V7X 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. Thermal performance relies on cathode tab soldering to ≥1 cm² copper area on FR4 PCB.

Pin/Terminal	Circuit Role	Design Meaning
1 (K)	Cathode	Connected to regulated output node; must be soldered to large copper pad for thermal management and 4.1 W power handling
2 (A)	Anode	Connected to ground or lower-potential rail; forms reverse-biased junction during regulation

Key Features

Feature	Design Value
High-Power Zener Regulation	4.1 W DC dissipation at T_sp = 75 °C enables replacement of larger TO-220 regulators in space-constrained designs
Precision Voltage Tolerance	±5 % nominal V_Z (4.40–5.00 V) ensures tight 5 V rail accuracy without trimming resistors
Ultra-Low Leakage	1.1 µA max IR at V_R = 4.7 V minimizes error in high-impedance sensor biasing and ADC reference buffers
ESD-Robust Construction	30 kV contact discharge rating permits direct placement on exposed I/O lines without additional protection devices
Thermally Optimized Package	CFP3's cathode tab achieves 18 K/W R_th(j-sp), reducing junction temperature rise by >40 % vs. standard SOD-123

Applications

Industrial Sensor Signal Conditioning

Microcontroller I/O Protection

Use Scenario: Stabilizing 5 V reference for analog front-end of temperature/humidity sensors in factory automation PLCs.

IC Role / Device Role / Timing Role: Zener diode providing low-drift, low-noise voltage reference for ADC input scaling and biasing.

Use Value: 7.0 Ω dynamic impedance maintains reference stability within ±0.5 % across 0–100 mA load variations, eliminating calibration drift.

Use Scenario: Clamping GPIO pins of ARM Cortex-M microcontrollers against ESD events in HMI panels.

IC Role / Device Role / Timing Role: Bidirectional transient suppressor leveraging forward conduction (≤1 V VF) and reverse Zener action (4.7 V).

Use Value: 30 kV ESD rating meets IEC 61000-4-2 Level 4 without series current-limiting resistors, preserving signal integrity.

Programmable Logic Supply Rail Clamp

Low-Power IoT Node Voltage Reference

Use Scenario: Protecting FPGA configuration voltage rails (e.g., 3.3 V or 5 V) from overvoltage transients during hot-swap insertion.

IC Role / Device Role / Timing Role: Fast-response shunt regulator absorbing surge energy before downstream LDOs saturate.

Use Value: 800 W non-repetitive peak power (t_p ≤ 100 µs) clamps 100 ns spikes without degradation, extending system MTBF.

Use Scenario: Providing stable 4.7 V reference for ultra-low-power RTC and wake-up comparators in battery-operated asset trackers.

IC Role / Device Role / Timing Role: Low-leakage Zener establishing accurate threshold voltage for sleep-mode wake triggers.

Use Value: 1.1 µA reverse current draws <1 µA from coin cell, enabling >10-year battery life in always-on monitoring applications.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX84-C4V7	Same 4.7 V nominal V_Z, but only 300 mW P_tot and 100 Ω R_Z; SOT23 package with no thermal tab	Limited to <50 mA regulation; unsuitable for >1 W thermal loads or ESD-heavy environments	Select only for low-power signal-level clamping where board space is critical and thermal stress is negligible
MMSZ4704T1G	4.7 V V_Z, 500 mW P_tot, 90 Ω R_Z; SOD-123 package lacks dedicated thermal tab	Higher dynamic impedance causes >4× greater output ripple under load; no 30 kV ESD rating	Prefer for cost-sensitive consumer electronics where ESD immunity and power density are secondary

Compared with BZX84-C4V7 and MMSZ4704T1G, HPZR-C4V7X delivers 13.7× higher power handling, 12.9× lower dynamic impedance, and integrated 30 kV ESD protection - making it uniquely suited for industrial-grade regulation where thermal reliability and transient immunity are mandatory.

Availability

HPZR-C4V7X is available at Aetrix Electronics and suitable for industrial sensor conditioning, microcontroller I/O protection, and programmable logic supply rail clamping requiring stable component supply, full traceability, and long-term lifecycle support.

Supply support for HPZR-C4V7X 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, reliable discrete and logic devices for automotive, industrial, and computing markets.

The HPZR series targets high-power Zener regulation in space-constrained industrial systems, combining SMD manufacturability with thermal and ESD robustness previously found only in through-hole packages.

FAQ

What is the maximum continuous current HPZR-C4V7X can regulate at 75 °C solder point temperature?

At T_sp = 75 °C with zero lead length and proper cathode pad thermal design, HPZR-C4V7X supports up to 870 mA continuous reverse current (calculated from P_tot = 4.1 W ÷ V_Z = 4.7 V). This assumes ambient PCB temperature remains ≤50 °C and thermal resistance to ambient is maintained below 27 K/W.

Can HPZR-C4V7X replace a 1N4733A in existing designs?

No - the 1N4733A is a 5.1 V, 1 W through-hole Zener (DO-41). HPZR-C4V7X has different voltage (4.7 V), higher power (4.1 W), SMD CFP3 package, and distinct thermal mounting requirements. Direct replacement requires PCB layout revision, thermal pad redesign, and validation of 0.4 V lower regulation voltage in the target circuit.

Does HPZR-C4V7X require a series current-limiting resistor in regulation mode?

Yes - like all Zener diodes, HPZR-C4V7X requires an external series resistor to set operating current (I_Z) between minimum knee current (≈1 mA) and maximum rated current (≈870 mA). The resistor value is calculated as R = (V_IN − 4.7 V) / I_Z, with power rating derated for thermal safety.

How does the CFP3 package's cathode tab improve thermal performance versus standard SOD-123?

The CFP3 cathode tab provides a direct low-thermal-resistance path (18 K/W) from junction to solder point, versus ~60 K/W in standard SOD-123. This allows 4.1 W dissipation at T_sp = 75 °C - more than 4× the power handling of conventional SOD-123 Zeners - by transferring heat into the PCB copper rather than relying on case convection.

HPZR-C4V7X Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: -

Packaging:: Tape & Reel (TR)

Product Status:: Active

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

Tolerance:: -

Power - Max:: -

Impedance (Max) (Zzt):: -

Current - Reverse Leakage @ Vr:: -

Voltage - Forward (Vf) (Max) @ If:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

HPZR-C4V7X FAQ

1.How can I place an order for HPZR-C4V7X through Aetrix?

Please submit a Request for Quotation (RFQ) for HPZR-C4V7X 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-C4V7X reliable?

The price and inventory of HPZR-C4V7X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HPZR-C4V7X is usually 5 days.

3.What payment methods are accepted for HPZR-C4V7X?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HPZR-C4V7X transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HPZR-C4V7X?

HPZR-C4V7X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your HPZR-C4V7X 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-C4V7X?

For technical support, including HPZR-C4V7X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HPZR-C4V7X requirements.

6.How does Aetrix verify that HPZR-C4V7X is sourced from the original manufacturer or authorized distributors?

All HPZR-C4V7X 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-C4V7X meets industry standards.

7.What is the process for return or replacement of HPZR-C4V7X?

All HPZR-C4V7X units undergo pre-shipment inspection (PSI). If there is an issue with HPZR-C4V7X, 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-C4V7X part is unused and in its original packaging.

Return procedure for HPZR-C4V7X:

1.Submit a request within 90 days.

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

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