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Nexperia USA Inc. HPZR-C50-QX
- Part No.:
- HPZR-C50-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123W
- Datasheet:
-
HPZR-C50-QX.pdf
- Description:
- DIODE ZENER 50V 682MW SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:2,837
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Product details
Overview
HPZR-C50-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 50 V nominal working voltage at 1 mA test current, 43 Ω differential resistance at 20 mA, ≤0.1 µA reverse leakage at rated voltage, and 5.5 W DC power dissipation at 75 °C solder point temperature - enabling robust overvoltage protection in engine control units and ADAS power supplies.
For engineers reviewing the HPZR-C50-QX datasheet, HPZR-C50-QX pinout, HPZR-C50-QX application, or HPZR-C50-QX equivalent, this device supports AEC-Q101-qualified automotive designs requiring stable 50 V reference clamping, high ESD immunity (30 kV contact discharge), and thermal resilience up to 175 °C junction temperature in space-constrained SMD layouts.
Technical Context
This Zener diode operates in reverse-biased breakdown mode with tightly controlled VZ = 47.8–52.8 V at IZ = 1 mA, delivering low dynamic impedance (RZ = 43 Ω) for minimal voltage deviation under load transients. Its 30 kV IEC 61000-4-2 ESD rating is validated at the cathode soldering point, supporting direct placement on noisy automotive supply lines without external protection.
The device uses a planar silicon junction structure optimized for thermal stability, achieving Rth(j-sp) = 18 K/W to solder point and Tj(max) = 175 °C. Power derating follows a linear curve from 5.5 W at Tsp = 75 °C down to zero at 175 °C, matching automotive under-hood thermal profiles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VZ) | 47.8 V to 52.8 V at IZ = 1 mA - defines precise clamping threshold for 50 V rail protection |
| Differential Resistance (RZ) | 43 Ω at IZ = 20 mA - ensures <1.3 V output shift across ±10 mA load variation |
| Reverse Leakage (IR) | ≤0.1 µA at VR = 40 V - guarantees negligible standby current in always-on automotive modules |
| Total Power Dissipation (Ptot) | 5500 mW at Tsp = 75 °C (zero lead length) - enables high-energy transient absorption without heatsink |
| ESD Rating | 30 kV per IEC 61000-4-2 contact discharge - protects against human-body ESD events at cathode terminal |
| Junction Temperature (Tj) | −55 °C to +175 °C - supports operation in engine bay and transmission control environments |
| Package | CFP3 (SOD123W), 2.6 mm × 1.7 mm × 1.0 mm - ultra-low-profile SMD footprint compatible with automated reflow assembly |
Pinout & Package
HPZR-C50-QX uses a 2-terminal CFP3 (SOD123W) surface-mount plastic package with cathode marked by a bar on the body. Thermal performance relies on direct copper pad connection to the cathode tab.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; primary heat path to PCB copper pad; ESD stress point per IEC 61000-4-2 |
| 2 | Anode (A) | Connected to ground or lower-potential reference; electrically inactive during Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive power management systems including engine control, lighting, and infotainment |
| 5.5 W DC power handling | Enables single-device transient suppression of ISO 7637-2 Pulse 5a (load dump) without external series resistor |
| 18 K/W junction-to-solder-point thermal resistance | Allows >4.5 W sustained dissipation on standard 1 cm² FR4 copper pad without forced cooling |
| ±5 % VZ tolerance | Reduces BOM complexity by eliminating need for binning or post-assembly calibration in 50 V systems |
| Low 0.1 µA leakage at 40 V | Minimizes quiescent current drain in battery-backed modules such as telematics and gateway ECUs |
Applications
| Engine Control Unit (ECU) Power Rail Protection | ADAS Camera Module Voltage Clamping |
|---|---|
Use Scenario: Protects 50 V auxiliary supply in diesel ECU against load dump transients exceeding 60 V. IC Role / Device Role / Timing Role: Zener clamping diode placed directly across input capacitor to clamp surge energy before DC/DC converter input stage. Use Value: Absorbs 5.5 W continuously during 100 ms load dump event while maintaining <53 V peak, preventing MOSFET gate oxide failure. |
Use Scenario: Stabilizes 50 V imaging sensor bias rail in forward-facing camera exposed to ESD during vehicle service. IC Role / Device Role / Timing Role: Primary ESD protection element mounted at connector entry point, shunting contact discharge pulses to ground. Use Value: Withstands 30 kV contact ESD per IEC 61000-4-2 without parameter shift, preserving image sensor analog front-end accuracy. |
| Electric Power Steering (EPS) Motor Driver Supply | Automotive Infotainment System Backup Regulator |
Use Scenario: Regulates 50 V gate drive supply for EPS H-bridge MOSFETs during battery voltage fluctuations. IC Role / Device Role / Timing Role: Precision Zener reference providing stable bias for high-side driver ICs under PWM switching noise. Use Value: 43 Ω dynamic impedance limits VZ drift to <0.4 V across 20 mA gate charge current pulses, ensuring consistent MOSFET turn-on timing. |
Use Scenario: Maintains 50 V backup voltage for RAM retention in head unit during ignition-off battery brownouts. IC Role / Device Role / Timing Role: Low-leakage shunt regulator holding voltage above 47.8 V while drawing only 0.1 µA from backup capacitor. Use Value: Enables >72-hour data retention on 100 µF hold-up capacitor with <1 % voltage sag, meeting OEM memory retention specs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C51 | VZ = 48–54 V at IZ = 5 mA; Ptot = 300 mW; SOT23 package | Limited to low-power signal-level clamping; insufficient for automotive load dump energy | Select only for non-automotive 50 V logic reference where power <0.3 W and AEC-Q101 not required |
| 1N5379B | VZ = 47.5–52.5 V at IZ = 140 mA; Ptot = 5 W; DO-41 through-hole | Requires manual insertion and wave soldering; no AEC-Q101 qualification; higher RZ (50 Ω) | Use only in legacy industrial designs where SMD footprint and automotive qualification are not mandatory |
Compared with BZX84-C51 and 1N5379B, HPZR-C50-QX uniquely combines AEC-Q101 compliance, 5.5 W SMD power handling, 30 kV ESD rating, and 43 Ω dynamic impedance - making it the sole option for new automotive 50 V rail protection requiring zero-lead thermal performance and production scalability.
Availability
HPZR-C50-QX is available at Aetrix Electronics and suitable for automotive engine control units, ADAS camera modules, electric power steering systems, and infotainment backup regulators requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for HPZR-C50-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-performance, reliable discrete, logic, and MOSFET devices, with leadership in automotive-grade components and advanced packaging.
The HPZR-Q series targets automotive power rail protection, delivering high-power Zener regulation in ultra-compact CFP3 packages to replace larger, less reliable alternatives in ECU, ADAS, and EPS subsystems.
FAQ
What is the maximum non-repetitive peak power the HPZR-C50-QX can handle?
The HPZR-C50-QX sustains 800 W non-repetitive peak power for pulse durations ≤100 µs, as verified per square-wave testing in the datasheet. This capability enables suppression of ISO 7637-2 Pulse 1 (inductive switch-off) transients without degradation when properly mounted on a 1 cm² cathode pad.
Does HPZR-C50-QX require a series current-limiting resistor in 50 V regulation circuits?
No series resistor is required for clamping applications where the source impedance naturally limits surge current, such as across bulk capacitors in DC/DC inputs. For continuous regulation, a resistor must be sized to keep average power below 5.5 W at worst-case ambient and solder point temperatures per the derating curve in Figure 9.
How does the CFP3 (SOD123W) package improve thermal performance versus standard SOD-123?
The CFP3 variant features an extended cathode tab that increases copper contact area and reduces Rth(j-sp) to 18 K/W - 35 % lower than standard SOD-123. This allows 5.5 W dissipation at Tsp = 75 °C versus ~3.5 W for legacy equivalents, confirmed by thermal measurements in Table 8 and Figure 9.
Is HPZR-C50-QX suitable for bidirectional TVS applications?
No - HPZR-C50-QX is a unidirectional Zener diode optimized for reverse-bias clamping only. It lacks symmetrical breakdown characteristics and has no specified forward surge rating. For bidirectional transient suppression, use dedicated automotive TVS arrays like PUSB3FR4 or ESD5V3U1U.
HPZR-C50-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):
- 50 V
- Tolerance:
- ±5%
- Power - Max:
- 682 mW
- Impedance (Max) (Zzt):
- 59.36 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 43 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-C50-QX FAQ
1.How can I place an order for HPZR-C50-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for HPZR-C50-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-C50-QX reliable?
The price and inventory of HPZR-C50-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-C50-QX is usually 5 days.
3.What payment methods are accepted for HPZR-C50-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HPZR-C50-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HPZR-C50-QX?
HPZR-C50-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HPZR-C50-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-C50-QX?
For technical support, including HPZR-C50-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HPZR-C50-QX requirements.
6.How does Aetrix verify that HPZR-C50-QX is sourced from the original manufacturer or authorized distributors?
All HPZR-C50-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-C50-QX meets industry standards.
7.What is the process for return or replacement of HPZR-C50-QX?
All HPZR-C50-QX units undergo pre-shipment inspection (PSI). If there is an issue with HPZR-C50-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-C50-QX part is unused and in its original packaging.
Return procedure for HPZR-C50-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HPZR-C50-QX Tags
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