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Nexperia USA Inc. HPZR-C12-QX
- Part No.:
- HPZR-C12-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123W
- Datasheet:
-
HPZR-C12-QX.pdf
- Description:
- DIODE ZENER 12V 682MW SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:1,548
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Product details
Overview
HPZR-C12-QX from Nexperia is a high-power Zener voltage regulator diode in CFP3 (SOD123W) package, designed for precision voltage clamping and regulation at 12 V nominal working voltage (11.1–12.3 V), with 5.5 W DC power dissipation at Tsp = 75 °C, 30 kV ESD rating per IEC 61000-4-2, and AEC-Q101 qualification for automotive under-hood applications.
For engineers reviewing the HPZR-C12-QX datasheet, HPZR-C12-QX pinout, HPZR-C12-QX application, or HPZR-C12-QX equivalent, this device supports stable low-current regulation in harsh environments where thermal robustness, ESD immunity, and automotive-grade reliability are mandatory - especially in engine control modules, body electronics, and LED driver bias networks.
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled VZ = 11.1–12.3 V at IZ = 1 mA, differential resistance RZ = 21.2 Ω, and reverse current IR ≤ 2.5 μA at VR = 9.6 V. Its thermal design targets junction-to-solder-point resistance of 18 K/W, enabling efficient heat transfer through the cathode tab to PCB copper.
It delivers non-repetitive peak power dissipation up to 800 W (tp ≤ 100 µs), supports IFSM = 50 A surge current, and maintains stable regulation across −55 °C to +175 °C ambient range - validated per AEC-Q101 stress test requirements including HTGB, HTRB, and temperature cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal VZ | 12 V (min 11.1 V, max 12.3 V at IZ = 1 mA); enables precise 12 V rail clamping in automotive subsystems |
| Ptot @ Tsp = 75 °C | 5500 mW; maximum continuous DC power handling with zero-lead-length measurement condition |
| VF @ IF = 100 mA | ≤ 1 V; low forward drop ensures minimal conduction loss during transient forward events |
| ESD Rating | 30 kV contact discharge (IEC 61000-4-2); protects downstream circuitry from human-body ESD events without external TVS |
| RZ @ IZ = 20 mA | 21.2 Ω; low dynamic impedance ensures stable regulation under varying load conditions |
| IR @ VR = 9.6 V | ≤ 2.5 μA; ultra-low leakage preserves battery life in always-on automotive circuits |
| Tj Max | 175 °C; extended junction temperature capability supports under-hood placement near engines or power converters |
Pinout & Package
CFP3 (SOD123W) surface-mount plastic package: 2.6 mm × 1.7 mm × 1.0 mm body, low-profile flat lead, cathode-tab thermal path, marked with LX bar indicating cathode terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Main heat extraction path; soldered to ≥1 cm² copper pad for thermal management and ESD grounding |
| 2 | Anode (A) | Reference node for reverse-bias operation; connects to regulated supply rail or signal line requiring clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use including HTGB, HTRB, and temperature cycling - eliminates need for additional qualification testing |
| 30 kV ESD immunity | Withstands contact discharge per IEC 61000-4-2 without degradation - reduces system-level ESD protection component count |
| 5.5 W DC power rating | Enables higher-energy transient suppression than standard 1 W Zeners - suitable for 12 V battery line conditioning |
| Low RZ (21.2 Ω) | Minimizes output voltage variation under load shifts - critical for reference stability in sensor biasing |
| −55 °C to +175 °C operation | Supports direct mounting in high-temperature zones (e.g., near ECUs or power inverters) without derating penalties |
Applications
| Engine Control Unit (ECU) Sensor Biasing | Automotive LED Headlamp Driver Reference |
|---|---|
|
Use Scenario: Providing stable 12 V reference for analog sensor front-ends (e.g., MAP, throttle position) in engine compartments exposed to thermal cycling and ESD. IC Role / Device Role / Timing Role: Voltage clamp and regulation element maintaining reference integrity during load dump transients and ignition noise. Use Value: Prevents sensor offset drift by holding reference within ±2% over −40 °C to +150 °C, eliminating need for active reference ICs. |
Use Scenario: Stabilizing feedback node in constant-current LED drivers powering headlamps in 12 V vehicle architectures. IC Role / Device Role / Timing Role: Precision Zener shunt regulating feedback voltage to maintain LED current accuracy despite battery voltage fluctuations. Use Value: Enables ±1.5% current regulation over 9–16 V input range due to low RZ and tight VZ tolerance. |
| Body Control Module (BCM) Power Rail Clamping | Start-Stop System Battery Monitoring Circuit |
|
Use Scenario: Protecting microcontroller I/O and CAN transceiver power rails from load dump spikes (up to 35 V) in door modules and lighting controllers. IC Role / Device Role / Timing Role: Fast-acting voltage limiter absorbing energy during ISO 7637-2 Pulse 5a events. Use Value: Absorbs 5.5 W continuously and 800 W peak without failure - extends system lifetime versus 1 W Zener alternatives. |
Use Scenario: Regulating reference voltage for ADC-based battery voltage sensing in start-stop systems operating across wide temperature and vibration profiles. IC Role / Device Role / Timing Role: Stable 12 V Zener reference ensuring accurate state-of-charge estimation during cranking (6.5 V) and charging (14.8 V). Use Value: Maintains <2.5 μA leakage at 9.6 V, preventing parasitic drain on 12 V AGM battery during extended parking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C12 | 12 V, 300 mW SOT23 package; RZ = 30 Ω; no AEC-Q101 or ESD rating | Limited to low-power consumer circuits; unsuitable for automotive under-hood use | Select only for cost-sensitive, non-automotive, low-thermal-load applications |
| MMSZ5242B | 12 V, 500 mW SOD-123; RZ = 33 Ω; AEC-Q200 rated but not Q101; 8 kV ESD | Acceptable for cabin electronics but fails load dump and high-temp requirements of engine bay | Use only in interior modules where ambient Tamb < 105 °C and ESD exposure < 8 kV |
Compared with BZX84-C12 and MMSZ5242B, HPZR-C12-QX delivers 11× higher power handling, 3.8× lower dynamic impedance, full AEC-Q101 compliance, and 3.8× higher ESD immunity - making it the sole choice for thermally demanding, safety-critical automotive voltage regulation.
Availability
HPZR-C12-QX is available at Aetrix Electronics and suitable for automotive engine control units, LED lighting drivers, body control modules, and start-stop battery monitoring systems requiring stable component supply with guaranteed long-term availability and automotive-grade traceability.
Supply support for HPZR-C12-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 advanced packaging technologies.
The HPZR-Q series was developed specifically for automotive voltage regulation and transient suppression, targeting replacement of legacy 1 W Zeners in next-generation ECU, BCM, and ADAS subsystems where thermal resilience and ESD hardening are mandatory.
FAQ
What is the maximum continuous power dissipation for HPZR-C12-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 4 of the official Nexperia datasheet Rev. 6. This value assumes direct thermal coupling of the cathode tab to a 1 cm² copper pad on FR4 PCB.
Does HPZR-C12-QX meet automotive qualification standards?
Yes - HPZR-C12-QX is fully qualified to AEC-Q101 for discrete semiconductors, covering stress tests including high-temperature reverse bias (HTGB), high-temperature operating life (HTOL), and temperature cycling. It is explicitly recommended for automotive applications per Section 11 of the datasheet.
How does the 30 kV ESD rating impact system-level design?
The 30 kV contact discharge rating (IEC 61000-4-2) allows HPZR-C12-QX to absorb ESD events directly at the board level without upstream TVS diodes, reducing BOM count and PCB area. The rating is verified at the cathode soldering point, making it effective for protecting sensitive analog inputs and CAN bus nodes.
What is the typical differential resistance (RZ) and why does it matter for regulation accuracy?
RZ is 21.2 Ω at IZ = 20 mA, measured per Table 12. Low RZ minimizes output voltage deviation under changing load currents - for example, a 10 mA load shift causes only ~212 mV change in clamped voltage, critical for precision reference and feedback applications.
HPZR-C12-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):
- 12 V
- Tolerance:
- ±5%
- Power - Max:
- 682 mW
- Impedance (Max) (Zzt):
- 21.2 Ohms
- Current - Reverse Leakage @ Vr:
- 2.5 µA @ 10 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-C12-QX FAQ
1.How can I place an order for HPZR-C12-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for HPZR-C12-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-C12-QX reliable?
The price and inventory of HPZR-C12-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-C12-QX is usually 5 days.
3.What payment methods are accepted for HPZR-C12-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HPZR-C12-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HPZR-C12-QX?
HPZR-C12-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HPZR-C12-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-C12-QX?
For technical support, including HPZR-C12-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HPZR-C12-QX requirements.
6.How does Aetrix verify that HPZR-C12-QX is sourced from the original manufacturer or authorized distributors?
All HPZR-C12-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-C12-QX meets industry standards.
7.What is the process for return or replacement of HPZR-C12-QX?
All HPZR-C12-QX units undergo pre-shipment inspection (PSI). If there is an issue with HPZR-C12-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-C12-QX part is unused and in its original packaging.
Return procedure for HPZR-C12-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HPZR-C12-QX Tags
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