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Nexperia USA Inc. HPZR-C3V9X
- Part No.:
- HPZR-C3V9X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HPZR-C3V9X.pdf
- Description:
- BIPOLAR DISCRETES
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
HPZR-C3V9X from Nexperia is a high-power Zener voltage regulator diode in CFP3 (SOD123W) surface-mount package, designed for precision low-current regulation at nominal 3.9 V (3.7–4.1 V tolerance), with 4.1 W DC power dissipation at Tsp = 75 °C, 800 W non-repetitive peak power, and 30 kV ESD rating per IEC 61000-4-2 (contact discharge). It serves as a stable reference or clamp in power supply feedback loops, overvoltage protection circuits, and biasing networks.
For engineers reviewing the HPZR-C3V9X datasheet, HPZR-C3V9X pinout, HPZR-C3V9X application, or HPZR-C3V9X equivalent, key selection criteria include its ±5 % VZ tolerance at IZ = 100 mA, 11 µA max reverse current at VR, 1.0 Ω typical differential resistance, and thermal resistance of 18 K/W (junction-to-solder point), critical for compact, thermally constrained PCB designs.
Technical Context
This device operates as a silicon planar Zener diode with controlled avalanche breakdown, optimized for stable DC regulation under low-current conditions (IZ = 100 mA). Its CFP3 package enables efficient heat transfer via the cathode tab to PCB copper, supporting up to 4.1 W dissipation when soldered to a 1 cm² cathode pad on FR4.
The diode exhibits low dynamic impedance (RZ ≤ 1.0 Ω at IZ = 100 mA) and tight voltage tolerance (±5 %), enabling accurate voltage referencing in analog control circuits. Its 30 kV ESD robustness and 150 °C maximum junction temperature support use in industrial environments with electrostatic-sensitive assembly processes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ (Nominal) | 3.9 V - Precise regulation setpoint at IZ = 100 mA, with 3.7–4.1 V min/max range. |
| Ptot (DC) | 4100 mW - Maximum continuous power dissipation at solder point temperature Tsp = 75 °C, measured at zero lead length. |
| RZ | ≤ 1.0 Ω - Low dynamic impedance ensures minimal output voltage variation under load transients. |
| IR @ VR | ≤ 11 µA - Very low leakage at rated reverse voltage, preserving efficiency in high-impedance bias networks. |
| ESD Rating | 30 kV - Withstands contact discharge per IEC 61000-4-2, reducing need for external ESD protection in board-level design. |
| Tj Max | 150 °C - Enables reliable operation in ambient temperatures up to +125 °C when properly heatsinked via PCB pad. |
| Rth(j-sp) | 18 K/W - Thermal resistance from junction to solder point confirms effective heat conduction through cathode tab to PCB copper. |
Pinout & Package
HPZR-C3V9X uses the CFP3 (SOD123W) plastic SMD package: 2.6 mm × 1.7 mm × 1.0 mm body, flat lead profile, cathode marked by a bar on the top surface. Thermal performance relies on direct cathode tab soldering to a 1 cm² copper pad on FR4 PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Primary heat path and voltage reference node; must be soldered to ≥1 cm² copper area for rated 4.1 W dissipation. |
| 2 (A) | Anode | Current return path; electrically and thermally isolated from cathode; no thermal sinking function. |
Key Features
| Feature | Design Value |
|---|---|
| High Power Density | 4.1 W DC dissipation in 2.6 mm × 1.7 mm footprint-enables compact, high-efficiency regulation without external heatsinks. |
| Tight Voltage Tolerance | ±5 % VZ at IZ = 100 mA-reduces calibration overhead in precision feedback and reference applications. |
| Ultra-Low Dynamic Impedance | ≤ 1.0 Ω differential resistance-minimizes output voltage drift during load or line transients. |
| ESD-Hardened Construction | 30 kV contact discharge rating-eliminates need for discrete TVS devices in many industrial I/O protection schemes. |
| Thermally Optimized Cathode Tab | 18 K/W Rth(j-sp)-enables predictable thermal design using standard FR4 PCB layout rules. |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Biasing |
|---|---|
|
Use Scenario: Providing stable 3.9 V reference for optocoupler-based feedback in isolated 12 V/5 V DC-DC converters. IC Role / Device Role / Timing Role: Zener clamping element setting precise error amplifier reference voltage in secondary-side regulation loop. Use Value: ±5 % VZ tolerance and ≤1.0 Ω RZ ensure <1 % output voltage drift across line/load/temperature, meeting EN 62368-1 stability requirements. |
Use Scenario: Biasing bridge-type pressure sensors in factory automation transmitters operating from 24 V rails. IC Role / Device Role / Timing Role: Low-leakage (≤11 µA) voltage reference generating stable excitation for Wheatstone bridge arms. Use Value: Ultra-low IR preserves sensor full-scale accuracy and enables >16-bit effective resolution in low-power 4–20 mA loop designs. |
| Overvoltage Clamp for MCU I/O | Programmable Current Source Reference |
|
Use Scenario: Protecting 3.3 V GPIO pins of industrial microcontrollers against 12 V field-wiring faults. IC Role / Device Role / Timing Role: Fast-acting shunt clamp limiting transient voltage to ≤4.1 V before internal ESD structures activate. Use Value: 30 kV ESD rating and 800 W PZSM allow direct placement at connector entry points without series resistance degradation. |
Use Scenario: Setting reference voltage for LM334-based 100 µA precision current sources in calibration equipment. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage source establishing ISET for two-terminal current regulators. Use Value: 1.0 Ω RZ and 150 °C Tj max enable stable current output across –40 °C to +85 °C ambient without thermal derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C3V9 | 300 mW Ptot, SOT23 package, RZ = 90 Ω, IR = 50 µA @ VR | Limited to low-power signal-level clamping; unsuitable for >100 mA regulation or thermal cycling. | Select only for space-constrained, sub-100 mW biasing where thermal performance is non-critical. |
| MMSZ4685 | 500 mW Ptot, SOD123 package, RZ = 15 Ω, IR = 10 µA @ VR, no specified ESD rating | Adequate for general-purpose regulation but lacks 30 kV ESD hardening and 4.1 W thermal capability. | Choose when cost sensitivity outweighs ESD robustness and power density requirements. |
Compared with BZX84-C3V9 and MMSZ4685, HPZR-C3V9X delivers 8× higher power handling, 15× lower dynamic impedance, and certified 30 kV ESD immunity-making it uniquely suitable for industrial-grade regulation where reliability, thermal margin, and transient resilience are mandatory.
Availability
HPZR-C3V9X is available at Aetrix Electronics and suitable for industrial power supplies, sensor signal conditioning, programmable current sources, and overvoltage protection circuits requiring stable component supply with guaranteed long-term manufacturability.
Supply support for HPZR-C3V9X 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, with leadership in logic, discretes, and MOSFETs.
The HPZR series belongs to Nexperia's high-power Zener diode product line, engineered specifically for thermally demanding, low-current regulation tasks where traditional Zeners fail due to power or ESD limitations.
FAQ
What is the maximum continuous forward current for HPZR-C3V9X?
HPZR-C3V9X is a Zener diode intended for reverse-biased operation; its absolute maximum forward current is 400 mA per limiting values table, but forward conduction is not a functional mode. In normal regulation use, forward current remains negligible (<1 µA) below 0.7 V.
Can HPZR-C3V9X replace standard 1N4730A in existing designs?
No-HPZR-C3V9X is not a drop-in replacement for 1N4730A. It has different package (CFP3 vs DO-41), thermal mounting requirements (cathode-tab soldering), and higher power rating (4.1 W vs 1 W). Redesign of PCB pad layout and thermal relief is required to realize its full specification.
How does the 30 kV ESD rating impact board-level protection strategy?
The 30 kV rating applies to contact discharge per IEC 61000-4-2 at the cathode solder point, meaning HPZR-C3V9X can absorb full ESD events without external components when placed directly at I/O entry points. This eliminates series resistors or RC filters that degrade signal integrity in analog sensing paths.
What PCB layout practices maximize thermal performance?
To achieve rated 4.1 W dissipation, the cathode (Pin 1) must be soldered to a minimum 1 cm² copper area on the component side of an FR4 board, tin-plated, with no thermal reliefs. The anode (Pin 2) should remain isolated from large copper pours to avoid unintended thermal coupling.
HPZR-C3V9X 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-C3V9X FAQ
1.How can I place an order for HPZR-C3V9X through Aetrix?
Please submit a Request for Quotation (RFQ) for HPZR-C3V9X 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-C3V9X reliable?
The price and inventory of HPZR-C3V9X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HPZR-C3V9X is usually 5 days.
3.What payment methods are accepted for HPZR-C3V9X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HPZR-C3V9X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HPZR-C3V9X?
HPZR-C3V9X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HPZR-C3V9X 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-C3V9X?
For technical support, including HPZR-C3V9X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HPZR-C3V9X requirements.
6.How does Aetrix verify that HPZR-C3V9X is sourced from the original manufacturer or authorized distributors?
All HPZR-C3V9X 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-C3V9X meets industry standards.
7.What is the process for return or replacement of HPZR-C3V9X?
All HPZR-C3V9X units undergo pre-shipment inspection (PSI). If there is an issue with HPZR-C3V9X, 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-C3V9X part is unused and in its original packaging.
Return procedure for HPZR-C3V9X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HPZR-C3V9X Tags
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