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Nexperia USA Inc. HPZR-C70X
- Part No.:
- HPZR-C70X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123W
- Datasheet:
-
HPZR-C70X.pdf
- Description:
- DIODE ZENER 70V 962MW SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:2,963
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Product details
Overview
HPZR-C70X from Nexperia is a high-power Zener voltage regulator diode in CFP3 (SOD123W) package, designed for precision DC voltage clamping and regulation at 70 V nominal working voltage (VZ = 66.7–73.7 V @ IZ = 1 mA), with 4.1 W total power dissipation at Tsp = 75 °C and 30 kV ESD rating per IEC 61000-4-2 (contact discharge), used in industrial power supply overvoltage protection circuits.
For engineers reviewing the HPZR-C70X datasheet, HPZR-C70X pinout, HPZR-C70X application, or HPZR-C70X equivalent, this page delivers verified thermal resistance (Rth(j-sp) = 18 K/W), differential impedance (RZ = 60 Ω @ IZ = 20 mA), non-repetitive peak power (800 W), forward voltage (≤1 V @ 100 mA), and cathode/anode terminal mapping - all critical for surge-tolerant, low-profile SMD voltage reference design.
Technical Context
This device operates as a two-terminal silicon Zener diode with sharp reverse breakdown characteristics, optimized for stable voltage regulation under transient overvoltage conditions. Its 70 V nominal Zener voltage targets mid-to-high-voltage rail clamping in DC-DC converter feedback paths and input-stage protection.
Thermal performance is defined by junction-to-solder-point resistance (18 K/W), enabling high pulsed power handling (800 W, tp ≤ 100 µs) while maintaining Tj ≤ 150 °C. The ±5 % VZ tolerance and low RZ ensure tight regulation accuracy across temperature and current variations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ (nominal) | 70 V - precise clamping threshold for 66.7–73.7 V range at 1 mA test current |
| Ptot | 4100 mW - maximum continuous DC power dissipation at solder point temperature of 75 °C |
| RZ | 60 Ω - low dynamic impedance ensures minimal voltage shift under load variation (measured at 20 mA) |
| VF | ≤1 V - forward voltage drop at 100 mA enables efficient anode-cathode conduction during fault recovery |
| ESD Rating | 30 kV - contact discharge immunity per IEC 61000-4-2, protecting against human-body ESD events at cathode solder point |
| Rth(j-sp) | 18 K/W - low junction-to-solder-point thermal resistance supports high pulsed power without thermal runaway |
| IR | 0.1 µA max - ultra-low reverse leakage at rated VR, minimizing standby current loss in high-impedance bias networks |
Pinout & Package
HPZR-C70X uses the CFP3 (SOD123W) surface-mount plastic package: 2.6 mm × 1.7 mm × 1.0 mm body, flat lead profile, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal; serves as primary heat path to PCB copper pad |
| 2 | Anode (A) | Connected to ground or lower-potential reference; completes Zener conduction path during reverse-bias regulation |
Key Features
| Feature | Design Value |
|---|---|
| High surge power capability | 800 W non-repetitive peak power (tp ≤ 100 µs) enables robust transient suppression in power rails |
| Tight voltage tolerance | ±5 % nominal VZ ensures predictable clamping without post-production trimming |
| Low thermal resistance | Rth(j-sp) = 18 K/W allows direct thermal coupling to PCB copper, reducing need for external heatsinking |
| ESD-hardened construction | 30 kV contact discharge rating protects against assembly-line and field ESD without external TVS |
| Miniature SMD footprint | SOD123W outline (2.6 × 1.7 mm) supports high-density layout in space-constrained industrial control modules |
Applications
| Industrial Power Supply Protection | DC-DC Converter Feedback Clamping |
|---|---|
|
Use Scenario: Overvoltage protection on 48 V DC input rail of programmable logic controller (PLC) power module. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to clamp transients above 70 V, preventing damage to downstream buck controller ICs. Use Value: 4.1 W continuous dissipation and 800 W pulse handling absorb energy from lightning-induced surges without failure. |
Use Scenario: Voltage reference stabilization in isolated flyback converter feedback loop using optocoupler-coupled error amplifier. IC Role / Device Role / Timing Role: Precision Zener providing stable 70 V reference to bias optocoupler LED, ensuring accurate secondary-side voltage regulation. Use Value: 60 Ω differential resistance minimizes regulation error caused by LED current variation across line/load conditions. |
| Automated Test Equipment (ATE) Bias Networks | Motor Drive Gate Driver Clamp |
|
Use Scenario: High-impedance bias voltage generation for analog front-end multiplexers in semiconductor ATE systems. IC Role / Device Role / Timing Role: Low-leakage (0.1 µA max) Zener regulating reference node for 16-bit DACs and precision ADCs. Use Value: Ultra-low IR preserves signal integrity in high-Z bias chains, avoiding gain drift and offset errors. |
Use Scenario: Clamping of bootstrap capacitor voltage in 3-phase IGBT gate driver stage of HVAC inverter. IC Role / Device Role / Timing Role: Fast-response Zener limiting bootstrap voltage to safe level during high-dV/dt switching transitions. Use Value: 30 kV ESD rating prevents latch-up or degradation during automated PCB handling and field operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C70 | Lower Ptot (300 mW), higher RZ (100 Ω), SOT23 package | Not suitable for >500 mW continuous dissipation or high-energy transients | Select only for low-power signal-level clamping where board space permits larger footprint |
| 1N4744A | Through-hole DO-41, Ptot = 1 W, VZ = 14 V (not 70 V), no ESD rating | Cannot replace HPZR-C70X due to mismatched voltage rating and packaging | Not functionally equivalent; avoid for 70 V SMD applications requiring ESD hardening |
Compared with BZX84-C70 and 1N4744A, HPZR-C70X uniquely combines 70 V regulation, 4.1 W thermal capability, 30 kV ESD immunity, and SOD123W footprint - making it the only viable option for compact, high-reliability industrial power rail protection.
Availability
HPZR-C70X is available at Aetrix Electronics and suitable for industrial power supply protection, DC-DC converter feedback clamping, automated test equipment bias networks, and motor drive gate driver clamp applications requiring stable component supply and high surge resilience.
Supply support for HPZR-C70X 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 and industrial-grade components.
The HPZR series belongs to Nexperia's high-power Zener regulator portfolio, engineered specifically for ruggedized SMD voltage clamping in industrial power conversion, motor control, and instrumentation systems where thermal robustness and ESD immunity are mandatory.
FAQ
What is the maximum continuous power dissipation for HPZR-C70X at 75 °C solder point temperature?
HPZR-C70X delivers 4100 mW (4.1 W) maximum continuous DC power dissipation when measured at zero lead length with solder point temperature held at 75 °C, as specified in Table 4 and confirmed in Limiting Values Table 5. This rating assumes proper PCB copper pad thermal design per the 1 cm² cathode mounting recommendation.
How does the 30 kV ESD rating apply to HPZR-C70X in system-level design?
The 30 kV ESD rating applies specifically to contact discharge per IEC 61000-4-2, measured at the cathode solder point. It reflects the device's ability to withstand ten non-repetitive ESD pulses without parametric shift or failure, eliminating need for additional ESD protection in front-end power interfaces where human contact is possible.
Can HPZR-C70X be used in place of standard 1N47xx series Zeners in SMD layouts?
No - HPZR-C70X is not a drop-in replacement for through-hole 1N47xx devices due to its SOD123W footprint, different thermal path (solder-point referenced), and higher power/ESD specifications. It requires dedicated PCB land pattern per Figure 11 and thermal pad design per datasheet Section 12.
What is the differential resistance (RZ) of HPZR-C70X and why does it matter in regulation accuracy?
HPZR-C70X has RZ = 60 Ω measured at IZ = 20 mA. This low dynamic impedance means output voltage varies only ~1.2 V per 20 mA change in Zener current, directly improving regulation stability in variable-load applications such as feedback networks and precision biasing.
HPZR-C70X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- HPZR
- Package/Case:
- SOD-123W
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 70 V
- Tolerance:
- ±5%
- Power - Max:
- 962 mW
- Impedance (Max) (Zzt):
- 76.32 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 60 V
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 100 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123W
HPZR-C70X FAQ
1.How can I place an order for HPZR-C70X through Aetrix?
Please submit a Request for Quotation (RFQ) for HPZR-C70X 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-C70X reliable?
The price and inventory of HPZR-C70X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HPZR-C70X is usually 5 days.
3.What payment methods are accepted for HPZR-C70X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HPZR-C70X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HPZR-C70X?
HPZR-C70X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HPZR-C70X 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-C70X?
For technical support, including HPZR-C70X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HPZR-C70X requirements.
6.How does Aetrix verify that HPZR-C70X is sourced from the original manufacturer or authorized distributors?
All HPZR-C70X 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-C70X meets industry standards.
7.What is the process for return or replacement of HPZR-C70X?
All HPZR-C70X units undergo pre-shipment inspection (PSI). If there is an issue with HPZR-C70X, 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-C70X part is unused and in its original packaging.
Return procedure for HPZR-C70X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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