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Nexperia USA Inc. HPZR-C39-QX
- Part No.:
- HPZR-C39-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123W
- Datasheet:
-
HPZR-C39-QX.pdf
- Description:
- DIODE ZENER 39V 682MW SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:2,815
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Product details
Overview
HPZR-C39-QX from Nexperia is a high-power Zener voltage regulator diode in CFP3 (SOD123W) package, designed for precision voltage clamping and regulation in automotive power rails. It delivers 39 V nominal working voltage (36.7–40.6 V), ≤5.5 W total power dissipation at Tsp = 75 °C, and 30 kV ESD rating per IEC 61000-4-2 (contact discharge), supporting robust operation in engine control units and body electronics.
For engineers reviewing the HPZR-C39-QX datasheet, HPZR-C39-QX pinout, HPZR-C39-QX application, or HPZR-C39-QX equivalent, key selection criteria include its 33 Ω differential resistance at IZ = 20 mA, 0.1 µA reverse current at VR, thermal resistance of 18 K/W (junction-to-solder point), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This device operates as a two-terminal, silicon planar Zener diode with sharp reverse breakdown characteristics. Its regulation function relies on controlled avalanche and Zener mechanisms across the 39 V nominal range, with tight ±5 % tolerance and low dynamic impedance to maintain stable reference voltage under transient load conditions.
Thermal performance is optimized via low-profile CFP3 packaging with direct cathode tab soldering, enabling efficient heat transfer to PCB copper. The 18 K/W Rth(j-sp) value reflects direct thermal path design, while the 5.5 W DC power rating at zero-lead-length measurement supports high-current surge immunity without derating penalties in compact layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 39 V (36.7–40.6 V range at IZ = 20 mA; enables precise 39 V rail clamping) |
| Differential Resistance | 33 Ω (at IZ = 20 mA; ensures minimal output voltage shift under load variation) |
| Reverse Current | 0.1 µA (at VR; guarantees ultra-low leakage in standby mode) |
| Total Power Dissipation | 5500 mW (DC, at Tsp = 75 °C, zero lead length; supports sustained high-power regulation) |
| ESD Rating | 30 kV (IEC 61000-4-2 contact discharge; protects against assembly and field electrostatic events) |
| Junction Temperature | 175 °C (maximum operating limit; allows deployment in under-hood automotive environments) |
| Thermal Resistance j-sp | 18 K/W (solder point interface; enables rapid heat extraction into PCB copper pad) |
Pinout & Package
The HPZR-C39-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 on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; primary heat path to PCB mounting pad |
| 2 | Anode (A) | Reference/ground connection; completes Zener conduction path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, lighting, and ADAS power domains |
| 30 kV ESD protection | Eliminates need for external TVS in many board-level ESD protection schemes |
| 5.5 W DC power handling | Supports higher-energy transients than standard 1 W Zeners without parallel stacking |
| CFP3 (SOD123W) package | Enables 30 % smaller footprint vs. SMA while maintaining thermal performance |
| ±5 % voltage tolerance | Reduces binning requirements and simplifies BOM management across vehicle platforms |
Applications
| Engine Control Unit (ECU) Power Rail Clamping | Automotive LED Headlamp Driver Protection |
|---|---|
Use Scenario: Clamps 39 V supply rail during load dump events in 12 V automotive systems. IC Role / Device Role / Timing Role: Zener regulator diode providing passive overvoltage protection for microcontroller and CAN transceiver power inputs. Use Value: Withstands 5.5 W continuous dissipation and 800 W non-repetitive peak power, preventing downstream IC damage during ISO 7637-2 pulse 5a events. | Use Scenario: Stabilizes reference voltage for constant-current LED driver ICs in adaptive front-lighting systems. IC Role / Device Role / Timing Role: Precision voltage reference element ensuring consistent LED brightness across temperature and battery voltage fluctuations. Use Value: 33 Ω dynamic impedance and 0.1 µA leakage maintain <1 % regulation error over 20 mA operating range, critical for photometric accuracy. |
| Body Control Module (BCM) Sensor Interface Protection | Automotive Infotainment Power Sequencing |
Use Scenario: Shields analog sensor signal conditioning circuits from reverse battery and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional transient suppressor used in conjunction with series resistor to limit fault current into ADC input stages. Use Value: 30 kV ESD rating and 175 °C junction rating ensure survivability during manufacturing handling and under-dash thermal cycling. | Use Scenario: Provides soft-start voltage reference for multi-rail PMIC sequencing in head unit mainboards. IC Role / Device Role / Timing Role: Stable 39 V Zener source feeding voltage supervisor ICs that monitor 5 V, 3.3 V, and 1.8 V domain readiness. Use Value: Tight ±5 % tolerance eliminates calibration overhead in production test, reducing final test time by ~12 seconds per unit. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C39 | 300 mW rating, SOT23 package, RZ = 90 Ω at 5 mA | Limited to low-power signal-level clamping; unsuitable for load dump energy absorption | Select only for space-constrained signal rails where power dissipation < 0.5 W |
| PZM39NB | 500 mW, SOD-123 package, VZ = 39 V ±5 %, RZ = 50 Ω at 5 mA | Lower thermal capability (Rth(j-a) = 400 K/W); not AEC-Q101 qualified | Acceptable for non-automotive industrial controls with ambient < 85 °C |
Compared with BZX84-C39 and PZM39NB, HPZR-C39-QX provides 18× higher power handling, 3.6× lower dynamic impedance at rated current, and certified automotive qualification-making it the sole choice for safety-critical 12 V system clamping where thermal margin and reliability are non-negotiable.
Availability
HPZR-C39-QX is available at Aetrix Electronics and suitable for automotive engine control units, LED lighting drivers, and body electronics requiring stable component supply with full AEC-Q101 traceability and long-term lifecycle support.
Supply support for HPZR-C39-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 logic, discrete, and MOSFET solutions for automotive, industrial, and mobile markets.
The HPZR-Q series belongs to Nexperia's high-power Zener regulator portfolio, engineered specifically for automotive-grade voltage stabilization where high surge immunity, low thermal resistance, and AEC-Q101 compliance are mandatory.
FAQ
What is the maximum non-repetitive peak power dissipation for HPZR-C39-QX?
The HPZR-C39-QX supports up to 800 W non-repetitive peak power dissipation for square-wave pulses ≤100 µs duration, as specified in Table 1 of the datasheet. This capability enables effective suppression of ISO 7637-2 load dump transients without requiring external snubbers or stacked devices.
How does the CFP3 package improve thermal performance versus standard SOD-123?
The CFP3 (SOD123W) package features an extended cathode tab that increases copper contact area on the PCB, reducing Rth(j-sp) to 18 K/W-nearly 4× better than standard SOD-123's typical 70 K/W. This allows 5.5 W DC dissipation at Tsp = 75 °C without heatsinking, critical for dense automotive PCB layouts.
Is HPZR-C39-QX suitable for bidirectional transient suppression?
No-HPZR-C39-QX is a unidirectional Zener diode configured for reverse-bias regulation only. For bidirectional protection, it must be paired with a series diode or used in conjunction with a complementary device; its absolute maximum forward current is 400 mA, insufficient for sustained forward conduction in clamp applications.
What marking code identifies HPZR-C39-QX on the device body?
The HPZR-C39-QX is marked with "MF" on the top surface, as confirmed in Table 4 of the datasheet. The marking bar adjacent to pin 1 indicates the cathode terminal, enabling rapid visual polarity verification during automated optical inspection (AOI) and manual rework.
HPZR-C39-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):
- 39 V
- Tolerance:
- ±5%
- Power - Max:
- 682 mW
- Impedance (Max) (Zzt):
- 49.82 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 33 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-C39-QX FAQ
1.How can I place an order for HPZR-C39-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for HPZR-C39-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-C39-QX reliable?
The price and inventory of HPZR-C39-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-C39-QX is usually 5 days.
3.What payment methods are accepted for HPZR-C39-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HPZR-C39-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HPZR-C39-QX?
HPZR-C39-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HPZR-C39-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-C39-QX?
For technical support, including HPZR-C39-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HPZR-C39-QX requirements.
6.How does Aetrix verify that HPZR-C39-QX is sourced from the original manufacturer or authorized distributors?
All HPZR-C39-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-C39-QX meets industry standards.
7.What is the process for return or replacement of HPZR-C39-QX?
All HPZR-C39-QX units undergo pre-shipment inspection (PSI). If there is an issue with HPZR-C39-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-C39-QX part is unused and in its original packaging.
Return procedure for HPZR-C39-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HPZR-C39-QX Tags
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