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Nexperia USA Inc. HPZR-C42-QX
- Part No.:
- HPZR-C42-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123W
- Datasheet:
-
HPZR-C42-QX.pdf
- Description:
- DIODE ZENER 42V 682MW SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:2,769
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Product details
Overview
HPZR-C42-QX from Nexperia is a high-power Zener voltage regulator diode in CFP3 (SOD123W) package, designed for precision DC voltage stabilization in automotive and industrial power rails. It delivers 42 V nominal working voltage (VZ = 40.0–44.2 V at IZ = 1 mA), 5.5 W total power dissipation at Tsp = 75 °C, and 30 kV ESD rating per IEC 61000-4-2 (contact discharge), supporting robust overvoltage protection in engine control units and battery management systems.
For engineers reviewing the HPZR-C42-QX datasheet, HPZR-C42-QX pinout, HPZR-C42-QX application, or HPZR-C42-QX equivalent, this device is selected for stable 42 V reference regulation under transient surge conditions, thermal-limited PCB layouts, AEC-Q101-compliant automotive subsystems, and low-leakage (<0.1 µA) reverse-bias operation at rated voltage.
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled VZ tolerance (~±5 %) and low differential resistance (RZ = 36 Ω at IZ = 20 mA), enabling minimal output voltage drift under load variation. Its thermal design targets junction-to-solder-point resistance of 18 K/W, optimized for direct cathode pad thermal coupling on FR4 PCBs.
The device supports non-repetitive peak power dissipation up to 800 W (tp ≤ 100 µs) and withstands 50 A non-repetitive forward surge current (tp = 8.3 ms), making it suitable for clamping transient overvoltages while maintaining long-term reliability in 175 °C maximum junction temperature environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ (Working Voltage) | 40.0 V to 44.2 V at IZ = 1 mA - defines precise DC regulation point for 42 V nominal rail stabilization |
| Ptot (Total Power Dissipation) | 5500 mW at Tsp = 75 °C - enables sustained 42 V/130 mA operation with zero-lead-length thermal measurement |
| RZ (Differential Resistance) | 36 Ω at IZ = 20 mA - ensures <0.72 V output shift per 20 mA load change, critical for stable reference accuracy |
| IR (Reverse Current) | ≤ 0.1 µA at VR = 33.6 V - guarantees ultra-low leakage below regulation threshold, minimizing standby power loss |
| ESD Rating | 30 kV per IEC 61000-4-2 contact discharge - provides immunity against human-body ESD events in assembly and field operation |
| Tj (Junction Temperature) | −55 °C to +175 °C - supports operation across full automotive ambient range including under-hood environments |
Pinout & Package
HPZR-C42-QX uses the CFP3 (SOD123W) surface-mount plastic package: 2.6 mm × 1.7 mm × 1.0 mm body, flat lead profile, cathode-marked with bar. Thermal performance relies on cathode pad soldering to ≥1 cm² copper area on FR4 PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; primary heat path via soldered pad; marking bar identifies this terminal |
| 2 | Anode (A) | Connected to ground or lower-potential rail; carries reverse bias current during regulation/clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use per stress test standard, enabling deployment in engine control, ADAS, and body electronics without additional qualification effort |
| 5.5 W DC power handling | Supports continuous regulation at 42 V/130 mA on standard FR4 PCBs, eliminating need for external heatsinking in space-constrained modules |
| Low RZ (36 Ω) | Minimizes dynamic voltage error during load transients, improving stability in feedback loops of DC-DC converters and LDO pre-regulators |
| 30 kV ESD robustness | Eliminates need for discrete ESD protection components in front-end power inputs, reducing BOM count and board area |
| CFP3 (SOD123W) footprint | Compatible with standard SOD123 reflow profiles and wave soldering footprints, ensuring drop-in manufacturability in high-volume automotive production |
Applications
| Engine Control Unit (ECU) Power Rail Protection | Automotive Battery Management System (BMS) Reference |
|---|---|
|
Use Scenario: Clamping 42 V auxiliary battery rail against load-dump transients in 12 V/48 V dual-battery architectures. IC Role / Device Role / Timing Role: Zener regulator acting as shunt overvoltage protector, conducting excess energy during ISO 16750-2 pulse 5a events. Use Value: Withstands 800 W non-repetitive surges (tp ≤ 100 µs) and maintains <0.1 µA leakage below 33.6 V, preventing false triggering during normal operation. |
Use Scenario: Providing stable 42 V reference for ADC monitoring of high-voltage battery cell stacks in 48 V mild-hybrid systems. IC Role / Device Role / Timing Role: Precision voltage reference source with ±5 % VZ tolerance and 36 Ω RZ, feeding analog front-end circuitry. Use Value: Enables 0.72 V max output shift under 20 mA load variation, ensuring <1 % measurement error in 12-bit battery voltage sensing. |
| Industrial PLC I/O Module Protection | On-Board Charger (OBC) Feedback Loop Clamp |
|
Use Scenario: Protecting 42 V isolated power supply outputs in programmable logic controller digital input modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Transient voltage suppressor placed across output capacitor, clamping fast-rising spikes before they reach downstream logic. Use Value: 30 kV ESD rating and 50 A IFSM capability ensure survival of repeated contact-discharge events and lightning-induced surges per IEC 61000-4-4. |
Use Scenario: Limiting feedback voltage in secondary-side regulation circuits of 48 V on-board chargers to prevent overvoltage shutdown during fault conditions. IC Role / Device Role / Timing Role: Shunt clamp in optocoupler feedback path, holding TL431 reference input at safe level during primary-side MOSFET failure. Use Value: 175 °C max junction temperature and 5.5 W DC dissipation allow reliable operation in thermally dense OBC enclosures without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C43 | 43 V nominal VZ, 300 mW Ptot, SOT23 package, RZ = 90 Ω | Limited to low-power signal-level references; insufficient for >100 mA regulation or surge clamping | Select only for cost-sensitive, non-automotive signal conditioning where thermal and surge requirements are minimal |
| MMSZ5243B | 43 V nominal VZ, 500 mW Ptot, SOD123 package, RZ = 70 Ω | Rated for 1.5 W max at 25 °C but lacks AEC-Q101 qualification and 30 kV ESD rating | Acceptable for industrial non-automotive power rails requiring basic 43 V regulation but not for automotive safety-critical zones |
Compared with BZX84-C43 and MMSZ5243B, HPZR-C42-QX delivers 11× higher power handling, AEC-Q101 compliance, and 60× greater ESD immunity-making it the sole choice for automotive-grade 42 V regulation where thermal margin, surge resilience, and qualification traceability are mandatory.
Availability
HPZR-C42-QX is available at Aetrix Electronics and suitable for automotive engine control units, battery management systems, industrial PLC I/O modules, and on-board charger feedback protection requiring stable component supply with full AEC-Q101 documentation and lot traceability.
Supply support for HPZR-C42-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 delivering high-performance, reliable discrete, logic, and MOSFET solutions with focus on efficiency, miniaturization, and automotive-grade quality.
The HPZR-Q series belongs to Nexperia's high-power Zener regulator product line, engineered specifically for AEC-Q101-compliant automotive voltage stabilization and transient suppression in harsh thermal and ESD environments.
FAQ
What is the maximum continuous reverse current HPZR-C42-QX can regulate at 42 V?
At 42 V nominal working voltage and Tsp = 75 °C, HPZR-C42-QX supports up to 130 mA continuous reverse current (5500 mW ÷ 42 V ≈ 131 mA), verified by DC power dissipation testing with zero lead length and cathode pad thermal coupling on FR4 PCB.
Does HPZR-C42-QX require external heat sinking in automotive under-hood applications?
No external heat sink is required: its CFP3 package achieves 18 K/W junction-to-solder-point thermal resistance when mounted on a 1 cm² cathode pad, enabling full 5.5 W dissipation at Tsp = 75 °C-sufficient for most under-hood ambient profiles with proper PCB copper layout.
How does HPZR-C42-QX differ from standard Zener diodes in surge clamping performance?
HPZR-C42-QX sustains 800 W non-repetitive peak power (tp ≤ 100 µs) and 50 A IFSM, exceeding typical Zeners by 4–8× in surge capacity; its 30 kV ESD rating and AEC-Q101 qualification further differentiate it for automotive-grade transient immunity without external TVS supplementation.
Can HPZR-C42-QX be used in place of a 43 V Zener like BZX84-C43 in existing designs?
No direct substitution is recommended: HPZR-C42-QX has 40.0–44.2 V VZ range (centered at 42 V) versus BZX84-C43's 41.4–44.6 V, but its 5.5 W power rating, thermal design, and AEC-Q101 compliance demand PCB layout changes-including enlarged cathode pad and revised thermal relief-to avoid overheating or reliability risk.
HPZR-C42-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):
- 42 V
- Tolerance:
- ±5%
- Power - Max:
- 682 mW
- Impedance (Max) (Zzt):
- 53 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 36 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-C42-QX FAQ
1.How can I place an order for HPZR-C42-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for HPZR-C42-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-C42-QX reliable?
The price and inventory of HPZR-C42-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-C42-QX is usually 5 days.
3.What payment methods are accepted for HPZR-C42-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HPZR-C42-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HPZR-C42-QX?
HPZR-C42-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HPZR-C42-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-C42-QX?
For technical support, including HPZR-C42-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HPZR-C42-QX requirements.
6.How does Aetrix verify that HPZR-C42-QX is sourced from the original manufacturer or authorized distributors?
All HPZR-C42-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-C42-QX meets industry standards.
7.What is the process for return or replacement of HPZR-C42-QX?
All HPZR-C42-QX units undergo pre-shipment inspection (PSI). If there is an issue with HPZR-C42-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-C42-QX part is unused and in its original packaging.
Return procedure for HPZR-C42-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HPZR-C42-QX Tags
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