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Nexperia USA Inc. HPZR-C19-QX
- Part No.:
- HPZR-C19-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123W
- Datasheet:
-
HPZR-C19-QX.pdf
- Description:
- DIODE ZENER 19V 682MW SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:2,726
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Product details
Overview
HPZR-C19-QX from Nexperia is a high-power Zener voltage regulator diode in CFP3 (SOD123W) package, rated for 5.5 W total power dissipation at 75 °C solder point temperature, with nominal working voltage 19 V (±5 % tolerance), 16 Ω differential resistance at 20 mA, and 0.1 μA reverse current at 15.2 V. It serves as a precision voltage reference or overvoltage clamp in automotive power rails and sensor supply circuits.
For engineers reviewing the HPZR-C19-QX datasheet, HPZR-C19-QX pinout, HPZR-C19-QX application, or HPZR-C19-QX equivalent, key selection criteria include its AEC-Q101 qualification, 30 kV IEC 61000-4-2 ESD rating, thermal resistance of 18 K/W junction-to-solder-point, and 175 °C maximum junction temperature-critical for under-hood automotive designs requiring robust transient suppression and stable regulation.
Technical Context
This device operates as a two-terminal, silicon planar Zener diode optimized for stable DC voltage regulation under varying load and temperature conditions. Its design targets low dynamic impedance (16 Ω at IZ = 20 mA) and tight voltage tolerance (±5 %) across the full operating range.
It features a thermally enhanced CFP3 package with direct cathode tab soldering to PCB copper, enabling efficient heat transfer to the board. The 18 K/W Rth(j-sp) value reflects optimized thermal path from junction to solder point-measured at the cathode tab per IEC 60747-1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VZ) | 17.8 V to 19.7 V at IZ = 1 mA - defines stable regulation band for 12 V–24 V automotive systems |
| Differential Resistance (RZ) | 16 Ω at IZ = 20 mA - ensures minimal output voltage shift under load transients |
| Total Power Dissipation (Ptot) | 5500 mW at Tsp = 75 °C (zero lead length) - supports high ambient thermal environments without derating |
| ESD Rating | 30 kV per IEC 61000-4-2 contact discharge - protects against human-body ESD events during assembly and operation |
| Junction Temperature (Tj) | −55 °C to +175 °C - enables deployment in engine control units and transmission modules |
| Reverse Current (IR) | 0.1 μA max at VR = 15.2 V - guarantees low leakage in standby and sleep modes |
| Thermal Resistance (Rth(j-sp)) | 18 K/W - enables direct thermal coupling to PCB copper for passive cooling |
Pinout & Package
The HPZR-C19-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 a bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; large copper pad required for thermal conduction and ESD grounding |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased Zener junction with cathode |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress per discrete semiconductor standard |
| 5.5 W DC power handling | Enables use as primary clamp in 12 V/24 V battery-supplied circuits without external heatsinking |
| 30 kV IEC 61000-4-2 ESD rating | Eliminates need for additional TVS protection in front-end power inputs exposed to service personnel |
| CFP3 (SOD123W) package | Provides 30 % lower profile and 2× thermal performance vs. standard SOD123 for space-constrained ECUs |
| ±5 % voltage tolerance | Supports precise 19 V regulation without post-production trimming or binning |
Applications
| Engine Control Unit (ECU) Sensor Reference | Automotive Infotainment Power Clamp |
|---|---|
Use Scenario: Stabilizing 5 V or 3.3 V reference for analog sensors (e.g., MAP, O2, knock) in engine bay environments. IC Role / Device Role / Timing Role: Zener shunt regulator providing low-noise, temperature-stable bias voltage independent of main supply fluctuations. Use Value: Maintains ±1 % reference accuracy over −40 °C to +150 °C ambient, reducing sensor calibration drift and improving diagnostic resolution. | Use Scenario: Clamping 12 V supply rail against load-dump transients (ISO 7637-2 Pulse 5a) in head unit power input stage. IC Role / Device Role / Timing Role: Fast-reacting voltage clamp absorbing up to 800 W non-repetitive surge energy for <100 µs. Use Value: Prevents downstream DC/DC converter damage without adding bulk capacitance or complex active protection circuitry. |
| Body Control Module (BCM) Wake-Up Circuit | Electric Power Steering (EPS) Feedback Protection |
Use Scenario: Enabling ultra-low-current wake-up detection (<10 µA) while maintaining regulated 3.3 V for microcontroller RTC and interrupt logic. IC Role / Device Role / Timing Role: Low-leakage Zener (0.1 µA @ 15.2 V) acting as voltage threshold detector and regulator in always-on domain. Use Value: Extends battery life in parked vehicle mode by minimizing quiescent current while preserving reliable wake-up sensitivity. | Use Scenario: Protecting torque sensor signal conditioning circuitry from induced transients during motor commutation in EPS motor drivers. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential analog feedback lines (e.g., 0–5 V ratiometric signals). Use Value: Limits common-mode voltage excursions to ±20 V without distorting small-signal integrity, ensuring ASIL-B functional safety compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C18 | 18 V nominal, 250 mW Ptot, SOT23 package, RZ = 40 Ω | Limited to low-power signal-level regulation; not AEC-Q101 qualified | Select only for non-automotive, low-current (<10 mA) reference needs where thermal margin is abundant |
| MMSZ5242B | 18 V nominal, 500 mW Ptot, SOD123 package, RZ = 23 Ω, no AEC-Q101 | Lower power rating and higher thermal resistance (125 K/W j-a) limits use in hot zones | Acceptable for cabin-mounted modules with ambient <85 °C and no load-dump exposure |
Compared with BZX84-C18 and MMSZ5242B, HPZR-C19-QX delivers 11× higher power handling, 7× lower junction-to-solder-point thermal resistance, and certified automotive qualification-making it the sole choice for under-hood, high-reliability, high-energy clamping applications.
Availability
HPZR-C19-QX is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, and electric power steering systems requiring stable component supply with guaranteed long-term continuity.
Supply support for HPZR-C19-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 belongs to Nexperia's high-power Zener regulator product line, engineered specifically for automotive power rail stabilization and transient suppression where AEC-Q101 compliance, low thermal resistance, and high surge capability are mandatory.
FAQ
What is the maximum non-repetitive peak power the HPZR-C19-QX can handle?
The HPZR-C19-QX supports up to 800 W non-repetitive peak power dissipation for pulse durations ≤100 µs, as defined in the square-wave surge test condition. This capability allows it to absorb ISO 7637-2 load-dump transients without failure when properly mounted on a 1 cm² cathode copper pad.
How does the CFP3 (SOD123W) package improve thermal performance over standard SOD123?
The CFP3 package features an extended cathode tab that provides direct thermal conduction to the PCB, achieving Rth(j-sp) = 18 K/W-versus ~125 K/W for standard SOD123. This 85 % reduction in thermal resistance enables 5.5 W continuous dissipation at 75 °C solder point, making it viable for under-hood applications without heatsinks.
Is HPZR-C19-QX suitable for bidirectional transient protection?
No-HPZR-C19-QX is a unidirectional Zener diode configured for reverse-bias regulation only. For bidirectional protection, a pair of back-to-back HPZR-C19-QX devices or a dedicated bidirectional TVS (e.g., P6SMB19A) must be used. Its schematic symbol and pinning confirm single-anode/cathode polarity.
What is the recommended PCB footprint for optimal thermal and mechanical reliability?
Nexperia specifies a reflow footprint with 1.1 mm × 1.1 mm solder lands, 1.2 mm × 1.4 mm solder resist opening, and 0.1 mm stencil thickness. The cathode land must be a minimum 1 cm² copper area, tin-plated, to achieve rated 5.5 W dissipation and meet AEC-Q101 thermal cycling requirements.
HPZR-C19-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):
- 19 V
- Tolerance:
- ±5%
- Power - Max:
- 682 mW
- Impedance (Max) (Zzt):
- 30.74 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 16 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-C19-QX FAQ
1.How can I place an order for HPZR-C19-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for HPZR-C19-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-C19-QX reliable?
The price and inventory of HPZR-C19-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-C19-QX is usually 5 days.
3.What payment methods are accepted for HPZR-C19-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HPZR-C19-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HPZR-C19-QX?
HPZR-C19-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HPZR-C19-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-C19-QX?
For technical support, including HPZR-C19-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HPZR-C19-QX requirements.
6.How does Aetrix verify that HPZR-C19-QX is sourced from the original manufacturer or authorized distributors?
All HPZR-C19-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-C19-QX meets industry standards.
7.What is the process for return or replacement of HPZR-C19-QX?
All HPZR-C19-QX units undergo pre-shipment inspection (PSI). If there is an issue with HPZR-C19-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-C19-QX part is unused and in its original packaging.
Return procedure for HPZR-C19-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HPZR-C19-QX Tags
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