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Nexperia USA Inc. HPZR-C68-QX
- Part No.:
- HPZR-C68-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123W
- Datasheet:
-
HPZR-C68-QX.pdf
- Description:
- DIODE ZENER 68V 682MW SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:2,990
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Product details
Overview
HPZR-C68-QX from Nexperia is a high-power Zener voltage regulator diode in CFP3 (SOD123W) package, designed for precision voltage clamping and regulation in automotive-grade circuits. It delivers 68 V nominal Zener voltage at IZ = 1 mA, supports ≤5.5 W DC power dissipation at Tsp = 75 °C, and exhibits ≤0.1 μA reverse current at VR = 54.4 V - enabling stable overvoltage protection in engine control units and battery management systems.
For engineers reviewing the HPZR-C68-QX datasheet, HPZR-C68-QX pinout, HPZR-C68-QX application, or HPZR-C68-QX equivalent, this device is selected for its AEC-Q101 qualification, 30 kV ESD rating per IEC 61000-4-2 (contact), 18 K/W junction-to-solder-point thermal resistance, and tight ±5 % VZ tolerance - critical for robust voltage reference design in harsh-environment automotive electronics.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 64.4 V to 71.2 V at IZ = 1 mA, and maintains low differential resistance of 58 Ω at IZ = 20 mA. Its non-repetitive peak power dissipation reaches 800 W for tp ≤ 100 µs, supporting transient surge suppression in 12 V/24 V vehicle electrical systems.
The device uses a planar silicon junction structure optimized for thermal stability up to Tj = 175 °C and features a cathode-marked SMD package with zero-lead-length power derating. Mounting on FR4 PCB with 1 cm² cathode pad achieves 5.5 W total power dissipation, while ceramic substrate mounting extends capability to 2.143 W at Tamb ≤ 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ (Nominal) | 68 V - precise clamping voltage at IZ = 1 mA for stable reference in automotive power rails |
| VZ Range | 64.4 V to 71.2 V - guaranteed operating window ensuring design margin against tolerance drift |
| Ptot @ Tsp = 75 °C | 5500 mW - maximum continuous DC power handling with zero-lead-length measurement condition |
| RZ | 58 Ω @ IZ = 20 mA - low dynamic impedance for minimal voltage variation under load transients |
| IR | ≤ 0.1 μA @ VR = 54.4 V - ultra-low leakage enabling high-impedance bias networks without error accumulation |
| ESD Rating | 30 kV contact discharge per IEC 61000-4-2 - protects against human-body ESD events during assembly and field operation |
| Tj Max | 175 °C - extended junction temperature range supporting under-hood deployment without thermal shutdown |
Pinout & Package
HPZR-C68-QX is housed in a CFP3 (SOD123W) surface-mount plastic package measuring 2.6 mm × 1.7 mm × 1.0 mm, with flat leads and low-profile construction optimized for automated reflow soldering and space-constrained automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marked by bar on package top; carries reverse-biased current during clamping |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including powertrain and body electronics per stress test standard |
| 5.5 W DC power rating | Enables single-device overvoltage protection in 12 V/24 V systems without external heatsinking |
| ±5 % VZ tolerance | Reduces binning requirements and simplifies BOM management across vehicle platforms |
| 30 kV ESD immunity | Eliminates need for supplemental ESD protection circuitry in front-end power stages |
| CFP3 (SOD123W) package | Supports high-density layout and automated optical inspection due to standardized footprint and marking |
Applications
| Engine Control Unit (ECU) Power Rail Protection | Automotive Battery Management System (BMS) |
|---|---|
Use Scenario: Clamping transients on 12 V supply lines during load dump events in gasoline/diesel ECUs. IC Role / Device Role / Timing Role: Zener voltage regulator providing fast-response overvoltage clamp independent of system clock or controller timing. Use Value: Limits voltage spikes to ≤75 V using 68 V nominal breakdown, preventing damage to MCU power supplies and analog sensor interfaces. |
Use Scenario: Stabilizing reference voltage for cell monitoring ICs in 12–48 V automotive battery packs. IC Role / Device Role / Timing Role: Precision shunt regulator establishing stable bias point for ADC input scaling and comparator thresholds. Use Value: Delivers <0.1 μA leakage and 58 Ω dynamic impedance, minimizing reference error and improving SOC estimation accuracy. |
| LED Headlamp Driver Feedback Loop | Infotainment System Power Sequencing |
Use Scenario: Regulating feedback voltage in constant-current LED driver ICs powering adaptive front lighting systems. IC Role / Device Role / Timing Role: Voltage reference element setting current-sense threshold in high-side current mirror topology. Use Value: Maintains ±5 % VZ tolerance across –40 °C to +150 °C ambient, ensuring consistent LED brightness under thermal cycling. |
Use Scenario: Enabling controlled power-up sequencing of SoC, PMIC, and display controllers in digital cockpit modules. IC Role / Device Role / Timing Role: Reset supervisor reference source triggering delayed enable signals via comparator circuit. Use Value: Provides 68 V clamping with 175 °C max junction temperature, supporting reliable reset generation in thermally aggressive dashboard 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-C68 | 300 mW rating, SOT23 package, 5 % tolerance, 100 °C Tj max | Limited to low-power signal-level clamping; unsuitable for automotive power rail protection | Select only for cost-sensitive consumer PCBs where thermal and reliability demands are lower |
| MMSZ5259B | 500 mW rating, SOD-123 package, ±5 % tolerance, 150 °C Tj max | Lower power handling and reduced ESD rating (8 kV) restrict use to non-critical subsystems | Prefer for infotainment peripherals where AEC-Q101 compliance is not mandated |
Compared with BZX84-C68 and MMSZ5259B, HPZR-C68-QX provides 11× higher power dissipation, AEC-Q101 qualification, and 30 kV ESD immunity - making it the sole viable choice for under-hood voltage regulation where thermal robustness and automotive-grade reliability are mandatory.
Availability
HPZR-C68-QX is available at Aetrix Electronics and suitable for automotive power rail protection, battery management reference design, and LED driver feedback regulation requiring stable component supply across production lifecycles.
Supply support for HPZR-C68-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 specializing in high-performance, high-reliability discrete and logic devices, with leadership in automotive-qualified components and energy-efficient power solutions.
The HPZR-Q series belongs to Nexperia's high-power Zener regulator product line, engineered specifically for AEC-Q101-compliant voltage clamping and reference applications in automotive power systems where thermal resilience and ESD hardness are non-negotiable.
FAQ
What is the maximum continuous power dissipation for HPZR-C68-QX at 75 °C solder point temperature?
The maximum continuous DC power dissipation is 5500 mW when measured at zero lead length and Tsp = 75 °C, as confirmed in Table 5 Limiting Values and Figure 9 of the datasheet. This rating assumes direct thermal coupling to the PCB cathode pad and applies only under steady-state conditions with no transient surges.
Does HPZR-C68-QX meet automotive qualification standards?
Yes - HPZR-C68-QX is fully qualified to AEC-Q101 for discrete semiconductors, covering stress tests including high-temperature reverse bias, temperature cycling, and ESD per IEC 61000-4-2. The datasheet explicitly states qualification status in Section 11 and confirms suitability for automotive applications.
How is the 68 V Zener voltage verified, and what test current is used?
VZ is measured at IZ = 1 mA with Tj = 25 °C, as defined in Table 12. The device guarantees 64.4 V minimum and 71.2 V maximum at this condition, reflecting the ±5 % tolerance band. This test current ensures stable operation while avoiding self-heating effects that occur at higher currents.
Can HPZR-C68-QX replace older Zener diodes like 1N4744A in automotive designs?
No - 1N4744A is rated for 15 W but lacks AEC-Q101 qualification, has larger DO-41 through-hole packaging, and offers no ESD rating or thermal resistance specification. HPZR-C68-QX is not a drop-in replacement; it requires PCB redesign for CFP3 footprint and leverages superior thermal performance in SMD automotive layouts.
HPZR-C68-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):
- 68 V
- Tolerance:
- ±5%
- Power - Max:
- 682 mW
- Impedance (Max) (Zzt):
- 75.26 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 58 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-C68-QX FAQ
1.How can I place an order for HPZR-C68-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for HPZR-C68-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-C68-QX reliable?
The price and inventory of HPZR-C68-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-C68-QX is usually 5 days.
3.What payment methods are accepted for HPZR-C68-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HPZR-C68-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HPZR-C68-QX?
HPZR-C68-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HPZR-C68-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-C68-QX?
For technical support, including HPZR-C68-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HPZR-C68-QX requirements.
6.How does Aetrix verify that HPZR-C68-QX is sourced from the original manufacturer or authorized distributors?
All HPZR-C68-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-C68-QX meets industry standards.
7.What is the process for return or replacement of HPZR-C68-QX?
All HPZR-C68-QX units undergo pre-shipment inspection (PSI). If there is an issue with HPZR-C68-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-C68-QX part is unused and in its original packaging.
Return procedure for HPZR-C68-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HPZR-C68-QX Tags
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