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Nexperia USA Inc. HPZR-C56-QX
- Part No.:
- HPZR-C56-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123W
- Datasheet:
-
HPZR-C56-QX.pdf
- Description:
- DIODE ZENER 56V 682MW SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:4,075
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Product details
Overview
HPZR-C56-QX from Nexperia is a high-power Zener voltage regulator diode in CFP3 (SOD123W) package, rated for 5.5 W total power dissipation at Tsp = 75 °C, with nominal working voltage 56 V (±5 % tolerance), 0.1 µA reverse current at 1 mA test current, and 48 Ω differential resistance at 20 mA. It serves as a precision voltage reference and overvoltage clamp in automotive power rails.
For engineers reviewing the HPZR-C56-QX datasheet, HPZR-C56-QX pinout, HPZR-C56-QX application, or HPZR-C56-QX equivalent, this device is selected for stable low-current regulation in harsh-temperature automotive subsystems where ESD robustness (30 kV contact discharge per IEC 61000-4-2), AEC-Q101 qualification, and thermal performance under PCB-constrained conditions are critical.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable 56 V reference across its terminals under varying load and temperature conditions. Its design targets DC voltage stabilization and transient suppression in 12 V/24 V automotive systems, with junction-to-solder-point thermal resistance of 18 K/W enabling efficient heat transfer through the cathode tab.
It delivers non-repetitive peak reverse power dissipation up to 800 W for pulses ≤100 µs and supports forward conduction up to 400 mA. The device is characterized at Tj = 25 °C, with specified parameters including VZ = 53.3–58.9 V, RZ = 48 Ω, and IR = 0.1 µA at VR = 45.2 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VZ) | 53.3 V to 58.9 V at IZ = 1 mA - defines stable regulation range for 56 V nominal rail clamping |
| Total Power Dissipation | 5500 mW at Tsp = 75 °C (zero lead length) - enables high-power operation without heatsink in compact layouts |
| Differential Resistance (RZ) | 48 Ω at IZ = 20 mA - determines regulation accuracy under dynamic load changes |
| Reverse Current (IR) | 0.1 µA at VR = 45.2 V - ensures minimal leakage in standby or low-power modes |
| ESD Rating | 30 kV per IEC 61000-4-2 (contact discharge) - protects against electrostatic events during handling and system integration |
| Junction Temperature | −55 °C to +175 °C - supports operation in under-hood automotive environments |
| Thermal Resistance (Rth(j-sp)) | 18 K/W - quantifies thermal path efficiency from junction to solder point for thermal design validation |
Pinout & Package
HPZR-C56-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 via cathode tab to PCB copper |
| 2 | Anode (A) | Connected to ground or lower-potential reference; completes reverse-bias conduction path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use per stress-test standard - eliminates need for additional qualification effort in Tier-1 designs |
| 5.5 W DC power rating @ Tsp = 75 °C | Enables higher continuous clamping capability than standard 1 W Zeners - reduces component count in multi-rail protection schemes |
| CFP3 (SOD123W) package | Low-profile, thermally enhanced SMD footprint compatible with standard reflow processes - supports automated assembly and space-constrained layouts |
| 30 kV ESD immunity (IEC 61000-4-2) | Eliminates need for external ESD protection in many front-end circuits - simplifies BOM and layout |
| ±5 % VZ tolerance | Ensures predictable clamping threshold across production lots - improves yield in voltage-critical safety functions |
Applications
| Engine Control Unit (ECU) Power Monitoring | Automotive Infotainment Power Rail Clamp |
|---|---|
Use Scenario: Stabilizing 56 V auxiliary supply derived from boost converter in engine control module. IC Role / Device Role / Timing Role: Zener voltage reference and overvoltage clamp protecting downstream MCU and sensor interface ICs. Use Value: Maintains regulation within ±5 % over −40 °C to +150 °C ambient, preventing brownout or latch-up during cold cranking transients. |
Use Scenario: Clamping surge-induced spikes on 56 V backlight supply in LCD display module. IC Role / Device Role / Timing Role: Transient voltage suppressor absorbing 800 W non-repetitive surges ≤100 µs. Use Value: Prevents display driver IC damage during load-dump events without requiring TVS array or complex RC snubbers. |
| Body Control Module (BCM) Sensor Reference | ADAS Camera Power Conditioning |
Use Scenario: Providing stable 56 V bias for Hall-effect position sensors in door actuator assemblies. IC Role / Device Role / Timing Role: Precision voltage reference with 0.1 µA leakage ensuring sensor offset stability over lifetime. Use Value: Enables <1 % measurement error in position feedback despite wide ambient temperature swings and vibration exposure. |
Use Scenario: Regulating 56 V camera module power input subjected to ISO 7637-2 pulse 5a/b transients. IC Role / Device Role / Timing Role: High-energy clamp limiting voltage excursion to ≤60 V during 100 ms load dump. Use Value: Sustains camera operation without reset during battery disconnection events, meeting ASIL-B functional safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C56 | 300 mW rating, SOT23 package, RZ = 90 Ω, IR = 0.1 µA at 45.2 V | Limited to low-power signal-level clamping; unsuitable for 5.5 W automotive power rail protection | Select only for cost-sensitive, non-automotive signal conditioning where thermal margin is not required. |
| 1N5385B | 5 W rating, DO-41 through-hole, VZ = 56 V ±5 %, RZ = 1.5 Ω, no AEC-Q101 qualification | Higher regulation accuracy but lacks automotive qualification and SMD compatibility | Choose only for legacy industrial designs where manual assembly and larger board area are acceptable. |
Compared with BZX84-C56 and 1N5385B, HPZR-C56-QX uniquely combines AEC-Q101 qualification, 5.5 W SMD power handling, and 30 kV ESD immunity - making it the sole option for next-generation compact, high-reliability automotive voltage regulation without trade-offs in qualification, form factor, or surge robustness.
Availability
HPZR-C56-QX is available at Aetrix Electronics and suitable for automotive power management, engine control unit (ECU) protection, and ADAS camera module voltage regulation requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for HPZR-C56-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 discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.
The HPZR-Q series belongs to Nexperia's high-power Zener regulator product line, engineered specifically for automotive voltage stabilization and transient suppression where AEC-Q101 compliance, thermal performance, and ESD resilience are mandatory.
FAQ
What is the maximum continuous power dissipation for HPZR-C56-QX at 125 °C ambient?
At Tamb = 125 °C, HPZR-C56-QX derates to approximately 1.5 W based on the thermal curve in Figure 9. This value assumes mounting on FR4 PCB with single-sided 1 cm² cathode pad. Derating must be calculated using Rth(j-a) = 70 K/W for ceramic substrates or Rth(j-sp) = 18 K/W when solder-point temperature is monitored directly.
Does HPZR-C56-QX support bidirectional transient suppression?
No. HPZR-C56-QX is a unidirectional Zener diode optimized for reverse-bias regulation and clamping. It conducts only when reverse voltage exceeds 53.3 V and provides no forward surge protection beyond its 400 mA IF rating. For bidirectional protection, a complementary pair or dedicated TVS diode is required.
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 PCB, reducing Rth(j-sp) to 18 K/W versus ~40 K/W for standard SOD-123. This allows 3× higher sustained power dissipation at the same solder-point temperature, verified by Nexperia's zero-lead-length test methodology.
Is HPZR-C56-QX compatible with lead-free reflow profiles?
Yes. HPZR-C56-QX is qualified for standard lead-free reflow per JEDEC J-STD-020, with peak temperature up to 260 °C. The recommended stencil thickness is 0.1 mm, and the footprint matches the SOD123W outline in Figure 11, supporting both reflow and wave soldering per Nexperia's published guidelines.
HPZR-C56-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):
- 56 V
- Tolerance:
- ±5%
- Power - Max:
- 682 mW
- Impedance (Max) (Zzt):
- 65.72 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 48 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-C56-QX FAQ
1.How can I place an order for HPZR-C56-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for HPZR-C56-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-C56-QX reliable?
The price and inventory of HPZR-C56-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-C56-QX is usually 5 days.
3.What payment methods are accepted for HPZR-C56-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HPZR-C56-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HPZR-C56-QX?
HPZR-C56-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HPZR-C56-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-C56-QX?
For technical support, including HPZR-C56-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HPZR-C56-QX requirements.
6.How does Aetrix verify that HPZR-C56-QX is sourced from the original manufacturer or authorized distributors?
All HPZR-C56-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-C56-QX meets industry standards.
7.What is the process for return or replacement of HPZR-C56-QX?
All HPZR-C56-QX units undergo pre-shipment inspection (PSI). If there is an issue with HPZR-C56-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-C56-QX part is unused and in its original packaging.
Return procedure for HPZR-C56-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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