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Nexperia USA Inc. HPZR-C75-QX
- Part No.:
- HPZR-C75-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123W
- Datasheet:
-
HPZR-C75-QX.pdf
- Description:
- DIODE ZENER 75V 682MW SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:2,940
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Product details
Overview
HPZR-C75-QX from Nexperia is a high-power Zener voltage regulator diode with nominal 75 V working voltage (VZ = 71.1–78.6 V at IZ = 1 mA), ±5 % tolerance, 5.5 W DC power dissipation at Tsp = 75 °C, and 30 kV ESD rating per IEC 61000-4-2 (contact discharge), designed for automotive-grade overvoltage clamping in power supply rails and sensor interface protection circuits.
For engineers reviewing the HPZR-C75-QX datasheet, HPZR-C75-QX pinout, HPZR-C75-QX application, or HPZR-C75-QX equivalent, this device serves as a robust, AEC-Q101-qualified discrete Zener for precision voltage regulation and transient suppression where thermal stability, low leakage (<0.1 µA at VR), and high surge capability (800 W non-repetitive peak) are critical.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable reference voltage across wide temperature (−55 °C to +175 °C) and current ranges. Its differential resistance of 77.38 Ω at IZ = 20 mA ensures tight regulation under dynamic load conditions.
The CFP3 (SOD123W) package delivers low thermal resistance-Rth(j-sp) = 18 K/W to solder point-and supports zero-lead-length power derating up to 5.5 W at 75 °C, enabling compact, high-density PCB layouts in space-constrained automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ (Working Voltage) | 71.1 V to 78.6 V at IZ = 1 mA - defines precise clamping threshold for 75 V nominal rail protection |
| IR (Reverse Current) | < 0.1 µA at VR - ensures minimal standby leakage in always-on automotive subsystems |
| Ptot (DC Power Dissipation) | 5500 mW @ Tsp = 75 °C - enables sustained regulation without heatsinking in ambient ≤75 °C |
| PZSM (Peak Surge Power) | 800 W for tp ≤ 100 µs - withstands ISO 7637-2 pulse 1/2/5a transients in 12 V/24 V systems |
| RZ (Differential Resistance) | 77.38 Ω at IZ = 20 mA - determines output impedance and regulation accuracy under varying load currents |
| ESD Rating | 30 kV contact discharge (IEC 61000-4-2) - protects against human-body ESD events during assembly and field operation |
| AEC-Q101 Qualified | Qualified for automotive applications - meets stress test requirements for temperature cycling, HTRB, and ESD |
Pinout & Package
HPZR-C75-QX uses the CFP3 (SOD123W) surface-mount plastic package: 2.6 mm × 1.7 mm × 1.0 mm body, low-profile flat lead design optimized for automated reflow assembly and thermal performance on FR4 PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Marked bar side) | Cathode (K) | Connected to regulated voltage node; carries reverse current during clamping; solder pad provides primary thermal path |
| 2 (Opposite end) | Anode (A) | Connected to ground or lower-potential reference; completes reverse-bias path for Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| High surge robustness | 800 W non-repetitive peak power (tp ≤ 100 µs) - handles automotive load-dump and inductive switching spikes |
| Low thermal resistance | Rth(j-sp) = 18 K/W - enables efficient heat transfer from junction to PCB solder point without external heatsink |
| Automotive qualification | AEC-Q101 compliant - validated for reliability in engine control units, body electronics, and ADAS sensors |
| Tight voltage tolerance | ±5 % nominal VZ - reduces binning requirements and simplifies BOM management across 75 V variants |
| Ultra-low leakage | < 0.1 µA at rated reverse voltage - preserves battery life in always-on vehicle networks (e.g., CAN wake-up circuits) |
Applications
| Engine Control Unit (ECU) Power Rail Protection | Automotive Camera Module Voltage Clamping |
|---|---|
|
Use Scenario: Protecting 75 V auxiliary supply rail in diesel ECU against ISO 7637-2 pulse 5a (load dump). IC Role / Device Role / Timing Role: Zener clamping diode placed between rail and ground to clamp transients above 75 V within nanoseconds. Use Value: Prevents damage to downstream 75 V-rated DC-DC controllers and microcontrollers during alternator disconnection events. |
Use Scenario: Stabilizing bias voltage for image sensor analog front-end in rear-view camera exposed to 12 V system noise. IC Role / Device Role / Timing Role: Precision voltage reference and overvoltage limiter for 75 V LDO input stage. Use Value: Maintains sensor signal integrity by limiting rail excursions to ≤78.6 V, avoiding ADC saturation or pixel clipping. |
| ADAS Radar Transceiver Bias Regulation | Electric Power Steering (EPS) Motor Driver Gate Protection |
|
Use Scenario: Providing stable 75 V reference for RF amplifier bias in 77 GHz radar modules operating under wide temperature range. IC Role / Device Role / Timing Role: Temperature-stable Zener shunt regulator maintaining constant bias despite −40 °C to +125 °C ambient swings. Use Value: Ensures consistent RF gain and phase linearity by holding bias voltage within ±0.5 V over full automotive temperature range. |
Use Scenario: Clamping gate-source voltage of high-side MOSFETs in EPS motor driver half-bridges during PWM switching transitions. IC Role / Device Role / Timing Role: Fast-response Zener placed across MOSFET gate and source to suppress dv/dt-induced spikes. Use Value: Prevents unintended turn-on and gate oxide stress by limiting VGS to ≤78.6 V during 100 ns-level voltage transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C75,115 (Nexperia) | Same 75 V nominal VZ, but SOT23 package; Ptot = 300 mW only; RZ = 100 Ω | Limited to low-power signal-level clamping; unsuitable for >100 mA continuous regulation | Select when board space is constrained and power < 0.3 W; avoid for power rail protection |
| SMBJ75A (Littelfuse) | TVS diode, not Zener; 75 V standoff, 100 W peak power, bidirectional; no DC regulation capability | Designed for fast transient suppression only; cannot regulate steady-state voltage | Select only for surge-only protection; requires separate Zener if DC reference needed |
Compared with BZX84-C75,115 and SMBJ75A, HPZR-C75-QX uniquely combines high DC power handling (5.5 W), precision Zener regulation (±5 %, low RZ), and automotive qualification-making it the sole choice for sustained 75 V rail stabilization in thermally demanding environments.
Availability
HPZR-C75-QX is available at Aetrix Electronics and suitable for automotive ECU power protection, ADAS sensor biasing, EPS motor driver gate clamping, and camera module voltage regulation requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for HPZR-C75-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 logic, discrete, and MOSFET solutions, with leadership in automotive-grade components and advanced packaging.
The HPZR-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for robust voltage regulation and transient suppression in automotive power systems where thermal resilience and long-term stability are mandatory.
FAQ
What is the maximum continuous reverse current (IZ) this diode can handle at 75 °C?
HPZR-C75-QX supports up to 400 mA forward current (IF), but its Zener operating current is defined by power limits. At Tsp = 75 °C, Ptot = 5.5 W and VZ ≈ 75 V yield a maximum sustainable IZ of ~73 mA. Exceeding this risks thermal runaway due to rising RZ and junction temperature.
Does the marking 'MS' on the device correspond to HPZR-C75-QX?
Yes. Per Table 4 in the datasheet, 'MS' is the official marking code for HPZR-C75-QX. The cathode is identified by a bar adjacent to pin 1, consistent with standard SOD123W polarity marking conventions used across Nexperia's CFP3 portfolio.
Can HPZR-C75-QX be used in parallel for higher power handling?
No. Zener diodes exhibit negative temperature coefficients and mismatched VZ tolerances; paralleling causes current hogging and thermal instability. For >5.5 W, use a single higher-rated device or an active regulator-not multiple HPZR-C75-QX units.
Is the 30 kV ESD rating applicable to both pins or only the cathode?
The 30 kV rating applies per diode, with testing performed at the cathode soldering point (Table 6 note [2]). The anode is not separately rated; ESD protection relies on the entire device structure, and layout must ensure low-inductance grounding of the cathode pad to realize full 30 kV capability.
HPZR-C75-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):
- 75 V
- Tolerance:
- ±5%
- Power - Max:
- 682 mW
- Impedance (Max) (Zzt):
- 77.38 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 64 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-C75-QX FAQ
1.How can I place an order for HPZR-C75-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for HPZR-C75-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-C75-QX reliable?
The price and inventory of HPZR-C75-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-C75-QX is usually 5 days.
3.What payment methods are accepted for HPZR-C75-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HPZR-C75-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HPZR-C75-QX?
HPZR-C75-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HPZR-C75-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-C75-QX?
For technical support, including HPZR-C75-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HPZR-C75-QX requirements.
6.How does Aetrix verify that HPZR-C75-QX is sourced from the original manufacturer or authorized distributors?
All HPZR-C75-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-C75-QX meets industry standards.
7.What is the process for return or replacement of HPZR-C75-QX?
All HPZR-C75-QX units undergo pre-shipment inspection (PSI). If there is an issue with HPZR-C75-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-C75-QX part is unused and in its original packaging.
Return procedure for HPZR-C75-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HPZR-C75-QX Tags
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