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Nexperia USA Inc. HPZR-C3V9-QX
- Part No.:
- HPZR-C3V9-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HPZR-C3V9-QX.pdf
- Description:
- BIPOLAR DISCRETES
- Quantity:
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Inventory:3,000
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Product details
Overview
HPZR-C3V9-QX from Nexperia is a high-power Zener voltage regulator diode in CFP3 (SOD123W) package, designed for precision low-current regulation at nominal 3.9 V with ±5 % tolerance, 11 µA max reverse current at rated voltage, and 5.5 W total power dissipation at Tsp = 75 °C - used in automotive ECU power rail clamping and sensor biasing circuits.
For engineers reviewing the HPZR-C3V9-QX datasheet, HPZR-C3V9-QX pinout, HPZR-C3V9-QX application, or HPZR-C3V9-QX equivalent, key selection criteria include Zener voltage accuracy, thermal resistance to solder point (18 K/W), AEC-Q101 qualification, 30 kV IEC 61000-4-2 ESD rating, and SOD123W footprint compatibility with high-density PCB layouts.
Technical Context
This device operates as a two-terminal shunt regulator, maintaining stable 3.7–4.1 V reverse breakdown across 100 mA test current with 1.0 Ω typical differential resistance. Its junction-to-solder-point thermal resistance of 18 K/W enables efficient heat transfer through the cathode tab under high-pulse conditions.
It supports non-repetitive peak reverse power up to 800 W (tp ≤ 100 µs) and withstands 50 A non-repetitive forward surge (8.3 ms half-sine), while meeting AEC-Q101 stress requirements for temperature cycling, humidity, and mechanical shock in automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.7 V min to 4.1 V max at IZ = 100 mA - defines precise regulation window for 3.3 V system rail protection |
| Reverse Current (IR) | ≤ 11 µA at VR = 3.0 V - ensures minimal leakage in standby-biased sensor interfaces |
| Differential Resistance (RZ) | ≤ 8.0 Ω at IZ = 100 mA - provides tight voltage regulation under dynamic load transients |
| Total Power Dissipation (Ptot) | 5500 mW at Tsp = 75 °C (zero lead length) - enables high-power transient suppression without heatsink |
| ESD Rating | 30 kV per IEC 61000-4-2 contact discharge - protects against human-body ESD events at board-level integration |
| Junction Temperature (Tj) | −55 °C to +175 °C operating range - supports under-hood automotive deployment with extended thermal margin |
| Package | CFP3 (SOD123W): 2.6 mm × 1.7 mm × 1.0 mm body, surface-mount, flat lead - optimized for automated reflow and space-constrained modules |
Pinout & Package
HPZR-C3V9-QX uses a 2-terminal CFP3 (SOD123W) plastic SMD package with cathode marked by a bar on the body. 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 thermal pad for rated 5.5 W dissipation |
| 2 (A) | Anode | Return path for reverse-bias current; connects to system ground or lower-potential rail |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HAST, and mechanical shock - suitable for engine control and ADAS modules |
| 30 kV ESD robustness | Withstands contact discharge per IEC 61000-4-2 without degradation - eliminates need for external ESD protection in CAN/LIN node interfaces |
| Low RZ (≤8 Ω) | Minimizes output voltage shift under load variation - critical for stable biasing of precision analog sensors |
| High PZSM (800 W) | Clamps fast transients (e.g., ISO 7637-2 pulse 1/2a) without failure - replaces bulkier TVS solutions in compact ECUs |
| SOD123W footprint | Compatible with standard 2.1 mm × 1.4 mm reflow stencil aperture - supports high-yield placement on 0.4 mm pitch routing layers |
Applications
| Automotive Engine Control Unit (ECU) Power Rail Clamping | Industrial Sensor Biasing Circuit |
|---|---|
Use Scenario: Suppressing load-dump transients on 3.3 V microcontroller supply rails in gasoline/diesel ECUs. IC Role / Device Role / Timing Role: Shunt regulator clamping voltage to protect downstream logic during ISO 7637-2 Pulse 5a events. Use Value: Maintains regulated 3.9 V output under 100 mA load with <8 Ω dynamic impedance, preventing brownout resets. |
Use Scenario: Providing stable bias voltage for MEMS pressure sensor bridges in HVAC controllers. IC Role / Device Role / Timing Role: Precision Zener reference replacing higher-cost voltage references in low-power analog front-ends. Use Value: Delivers ±5 % voltage accuracy over −40 °C to +125 °C with only 11 µA leakage at 3.0 V reverse bias. |
| Automotive Body Control Module (BCM) LIN Bus Protection | Medical Diagnostic Equipment Power Sequencing |
Use Scenario: ESD and overvoltage protection on LIN transceiver VCC pins exposed to harness coupling. IC Role / Device Role / Timing Role: Fast-response clamp absorbing 30 kV contact ESD pulses per IEC 61000-4-2 without latch-up. Use Value: Survives repeated 30 kV discharges while maintaining 3.9 V regulation - eliminates need for series resistors or RC filters. |
Use Scenario: Ensuring clean power-up sequencing for ADC reference buffers in portable ultrasound units. IC Role / Device Role / Timing Role: Low-noise Zener stabilizing 3.3 V LDO input during cold-start battery ramp-up. Use Value: Limits voltage deviation to <±20 mV during 100 mA step loads due to 1.0 Ω RZ, preserving ADC linearity. |
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 | 325 mW Ptot, SOT23 package, ±5 % tolerance, 10 µA IR at 3.0 V | Limited to low-power signal conditioning; not AEC-Q101 qualified or ESD-hardened | Select when cost and board space outweigh automotive reliability and transient robustness requirements |
| MMSZ4685 | 500 mW Ptot, SOD123 package, ±5 % tolerance, 1 µA IR at 3.0 V | Lower leakage but insufficient for >1 W clamping; lacks 30 kV ESD rating and AEC-Q101 validation | Prefer for battery-powered IoT sensors where ultra-low leakage dominates over surge handling |
Compared with BZX84-C3V9 and MMSZ4685, HPZR-C3V9-QX delivers 11× higher power dissipation, automotive qualification, and industry-leading 30 kV ESD immunity - making it the sole choice for safety-critical 3.3 V rail stabilization in harsh-environment electronics.
Availability
HPZR-C3V9-QX is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor modules, medical diagnostic equipment, and LIN bus interface protection requiring stable component supply across extended temperature and lifecycle demands.
Supply support for HPZR-C3V9-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, reliable discrete and logic devices for automotive, industrial, and consumer markets.
HPZR-C3V9-QX belongs to the HPZR-Q series of high-power Zener regulators engineered specifically for AEC-Q101-compliant automotive power rail stabilization and transient suppression in space-constrained modules.
FAQ
What is the maximum continuous reverse power this diode can handle at 100 °C ambient?
At 100 °C ambient, HPZR-C3V9-QX derates to approximately 3.3 W continuous reverse power based on its thermal resistance curve (Fig. 9). This assumes mounting on FR4 PCB with 1 cm² cathode pad and zero lead length - exceeding this requires forced convection or ceramic substrate.
Does the 30 kV ESD rating apply to both anode and cathode terminals?
No - the 30 kV IEC 61000-4-2 contact discharge rating applies specifically to the cathode terminal (pin 1), as confirmed in Table 6 footnote [2]. The anode is rated per standard diode ESD limits (≥8 kV air/contact), but cathode-targeted testing validates its role as primary ESD entry point in clamp configurations.
Can HPZR-C3V9-QX replace a 3.9 V TVS diode in ISO 7637-2 pulse suppression?
Yes - its 800 W non-repetitive peak power (tp ≤ 100 µs) and 50 A IFSM rating meet ISO 7637-2 Pulse 1 (inductive load dump) and Pulse 2a (alternator field decay) requirements when mounted with thermal pad. Unlike TVS diodes, it provides tighter voltage clamping (3.7–4.1 V) with lower dynamic impedance.
Is the marking code 'MV' on the device body sufficient for full traceability to HPZR-C3V9-QX?
Yes - Table 4 explicitly lists 'MV' as the marking code for HPZR-C3V9-QX. Combined with the CFP3 package outline and cathode bar orientation (Fig. 10), this enables unambiguous visual identification and automated optical inspection during SMT assembly without requiring additional lot coding.
HPZR-C3V9-QX 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-C3V9-QX FAQ
1.How can I place an order for HPZR-C3V9-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for HPZR-C3V9-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-C3V9-QX reliable?
The price and inventory of HPZR-C3V9-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-C3V9-QX is usually 5 days.
3.What payment methods are accepted for HPZR-C3V9-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HPZR-C3V9-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HPZR-C3V9-QX?
HPZR-C3V9-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HPZR-C3V9-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-C3V9-QX?
For technical support, including HPZR-C3V9-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HPZR-C3V9-QX requirements.
6.How does Aetrix verify that HPZR-C3V9-QX is sourced from the original manufacturer or authorized distributors?
All HPZR-C3V9-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-C3V9-QX meets industry standards.
7.What is the process for return or replacement of HPZR-C3V9-QX?
All HPZR-C3V9-QX units undergo pre-shipment inspection (PSI). If there is an issue with HPZR-C3V9-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-C3V9-QX part is unused and in its original packaging.
Return procedure for HPZR-C3V9-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HPZR-C3V9-QX Tags
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