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Nexperia USA Inc. HPZR-C47-QX
- Part No.:
- HPZR-C47-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123W
- Datasheet:
-
HPZR-C47-QX.pdf
- Description:
- DIODE ZENER 47V 682MW SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:2,819
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Product details
Overview
HPZR-C47-QX from Nexperia is a high-power Zener voltage regulator diode in CFP3 (SOD123W) package, rated for 5.5 W DC power dissipation at 75 °C solder point temperature, with nominal working voltage 47 V (±5 % tolerance), 40 Ω differential resistance at 20 mA, and 30 kV ESD rating 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-C47-QX datasheet, HPZR-C47-QX pinout, HPZR-C47-QX application, or HPZR-C47-QX equivalent, this device is selected for stable low-current regulation in harsh environments where AEC-Q101 qualification, thermal robustness up to 175 °C junction temperature, and high ESD immunity are required.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified nominal Zener voltage of 47 V at 20 mA test current, exhibiting 40 Ω dynamic impedance and ≤0.1 μA reverse leakage at 37.6 V (80 % of VZ). Its thermal design supports 18 K/W junction-to-solder-point resistance when mounted on the cathode tab, enabling efficient heat transfer in compact automotive PCB layouts.
The device complies with AEC-Q101 stress testing for discrete semiconductors and delivers non-repetitive peak power handling up to 800 W for pulses ≤100 µs, while maintaining DC power capability of 5.5 W under zero-lead-length measurement conditions at Tsp = 75 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 44.4 V to 49.1 V at IZ = 20 mA - defines clamping threshold with ±5 % tolerance for reliable overvoltage protection |
| Differential Resistance RZ | 40 Ω at IZ = 20 mA - ensures minimal output voltage shift under load variation in regulation circuits |
| Total Power Dissipation Ptot | 5500 mW at Tsp = 75 °C (zero lead length) - enables high-power transient suppression without heatsink in space-constrained designs |
| ESD Rating | 30 kV per IEC 61000-4-2 contact discharge - provides robust immunity against electrostatic events in assembly and field operation |
| Junction Temperature Tj | −55 °C to +175 °C - supports operation in under-hood automotive environments and industrial power supplies |
| Forward Voltage VF | ≤1 V at IF = 100 mA - limits conduction loss during forward-biased fault conditions |
| Non-repetitive Peak Power | 800 W for tp ≤ 100 µs - handles short-duration surge events such as load dump transients |
Pinout & Package
HPZR-C47-QX 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. Thermal performance optimized via exposed cathode pad for solder-point heat sinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; primary thermal path to PCB via soldered tab; polarity indicator for correct orientation |
| 2 (A) | Anode | Connected to ground or lower-potential rail; completes reverse-bias path for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics requiring reliability under thermal cycling and vibration |
| 5.5 W DC power rating | Enables sustained clamping in 12 V/24 V systems during prolonged overvoltage events without derating beyond Tsp = 75 °C |
| 30 kV ESD immunity | Eliminates need for external ESD protection in infotainment and sensor interface modules exposed to human contact |
| CFP3 (SOD123W) package | Reduces board area by 40 % vs. SMA while maintaining thermal performance via direct cathode-to-PCB thermal path |
| ±5 % VZ tolerance | Supports tight regulation windows in feedback loops for DC-DC converters and battery management references |
Applications
| Automotive Load Dump Protection | Engine Control Unit (ECU) Reference |
|---|---|
|
Use Scenario: Suppresses 120 V transients induced by alternator load dump in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Zener clamp placed across input rail to limit voltage seen by downstream regulators and microcontrollers. Use Value: Withstands 800 W peak surges for ≤100 µs and maintains 47 V clamping accuracy within ±5 %, preventing IC latch-up or damage. |
Use Scenario: Provides stable 47 V reference for analog sensing circuitry monitoring fuel injection timing or knock detection. IC Role / Device Role / Timing Role: Precision voltage reference source for ADC biasing and comparator thresholds in real-time engine control loops. Use Value: 40 Ω dynamic impedance ensures <100 mV deviation under 1 mA load variation, preserving signal integrity in closed-loop feedback. |
| Industrial Power Supply Clamp | On-Board Charger (OBC) Pre-Regulator |
|
Use Scenario: Clamps overvoltage spikes on 48 V intermediate bus in telecom rectifiers and server PSUs. IC Role / Device Role / Timing Role: Standalone Zener shunt regulator protecting gate drivers and isolated feedback optocouplers. Use Value: 175 °C max junction temperature and 5.5 W continuous dissipation allow operation without forced air cooling in sealed enclosures. |
Use Scenario: Regulates auxiliary 47 V rail powering gate drivers and MCU in bidirectional EV on-board chargers. IC Role / Device Role / Timing Role: Low-current voltage reference for isolated DC-DC bias supply feeding SiC MOSFET gate drivers. Use Value: AEC-Q101 qualification and 30 kV ESD rating ensure reliability during repeated plug/unplug cycles and high-noise switching environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C47 | 300 mW rating, SOT23 package, 5 % tolerance, 60 Ω RZ | Limited to low-power signal-level clamping; unsuitable for >100 mA surge currents | Select only for cost-sensitive consumer PCBs where thermal margin and automotive qualification are not required |
| PZM4709A | 1 W rating, SOD123 package, 5 % tolerance, 45 Ω RZ, no AEC-Q101 | Lower power handling and unqualified for automotive use; lacks 30 kV ESD rating | Acceptable for industrial prototypes but requires requalification for production automotive programs |
Compared with BZX84-C47 and PZM4709A, HPZR-C47-QX delivers 18× higher DC power capability, certified automotive reliability, and superior ESD robustness-making it the sole choice for production-grade 47 V clamping in safety-critical vehicle subsystems.
Availability
HPZR-C47-QX is available at Aetrix Electronics and suitable for automotive power management, industrial DC-DC converter protection, and EV on-board charger auxiliary rail regulation requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for HPZR-C47-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, serving automotive, industrial, and computing markets with logic, discretes, and MOSFETs.
The HPZR-Q series targets automotive-grade Zener regulation, engineered specifically for AEC-Q101 compliance, high-power transient suppression, and thermal resilience in under-hood and battery-system applications.
FAQ
What is the maximum continuous reverse current the HPZR-C47-QX can sustain at 75 °C?
The HPZR-C47-QX sustains up to 117 mA continuous reverse current at Tsp = 75 °C, calculated from its 5.5 W DC power rating and nominal 47 V Zener voltage (5500 mW ÷ 47 V ≈ 117 mA). This value assumes zero-lead-length mounting and proper cathode pad thermal coupling to the PCB.
Does HPZR-C47-QX require a heatsink for 5.5 W operation?
No external heatsink is required. The CFP3 package achieves 5.5 W dissipation at Tsp = 75 °C using only the cathode solder pad as the thermal interface to a 1 cm² copper area on FR4 PCB. Rth(j-sp) is 18 K/W, enabling direct board-level heat spreading without added mechanical complexity.
How does the 30 kV ESD rating translate to system-level protection?
The 30 kV rating per IEC 61000-4-2 contact discharge means HPZR-C47-QX can absorb full ESD energy at the cathode solder point without degradation-eliminating secondary protection components in interfaces like USB-C power delivery ports or CAN transceiver bias rails where human touch exposure occurs.
Can HPZR-C47-QX replace older 1N4747A in automotive designs?
Yes, with critical improvements: HPZR-C47-QX offers AEC-Q101 qualification, 5.5 W vs. 1 W rating, 30 kV ESD vs. unspecified, and CFP3's superior thermal resistance (18 K/W vs. ~60 K/W for DO-41). Layout redesign is required due to SMD footprint, but reliability and power margins increase significantly.
HPZR-C47-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):
- 47 V
- Tolerance:
- ±5%
- Power - Max:
- 682 mW
- Impedance (Max) (Zzt):
- 56.18 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 40 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-C47-QX FAQ
1.How can I place an order for HPZR-C47-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for HPZR-C47-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-C47-QX reliable?
The price and inventory of HPZR-C47-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-C47-QX is usually 5 days.
3.What payment methods are accepted for HPZR-C47-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HPZR-C47-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HPZR-C47-QX?
HPZR-C47-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HPZR-C47-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-C47-QX?
For technical support, including HPZR-C47-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HPZR-C47-QX requirements.
6.How does Aetrix verify that HPZR-C47-QX is sourced from the original manufacturer or authorized distributors?
All HPZR-C47-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-C47-QX meets industry standards.
7.What is the process for return or replacement of HPZR-C47-QX?
All HPZR-C47-QX units undergo pre-shipment inspection (PSI). If there is an issue with HPZR-C47-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-C47-QX part is unused and in its original packaging.
Return procedure for HPZR-C47-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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