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Nexperia USA Inc. HPZR-C35-QX
- Part No.:
- HPZR-C35-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123W
- Datasheet:
-
HPZR-C35-QX.pdf
- Description:
- DIODE ZENER 35V 682MW SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:2,745
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Product details
Overview
HPZR-C35-QX from Nexperia is a high-power Zener voltage regulator diode in CFP3 (SOD123W) package, designed for precision voltage clamping and regulation in automotive-grade circuits. It delivers 35 V nominal working voltage at 1 mA test current, 5.5 W total power dissipation at Tsp = 75 °C, and 30 kV ESD rating per IEC 61000-4-2 (contact discharge), supporting robust operation in engine control units and body electronics.
For engineers reviewing the HPZR-C35-QX datasheet, HPZR-C35-QX pinout, HPZR-C35-QX application, or HPZR-C35-QX equivalent, key selection criteria include its ±5 % voltage tolerance, 30 Ω differential resistance at IZ = 20 mA, 1 cm² cathode pad thermal layout requirement, and AEC-Q101 qualification for under-hood automotive use.
Technical Context
This device operates as a two-terminal reverse-biased Zener diode with stable breakdown behavior across -55 °C to +175 °C ambient range. Its junction-to-solder-point thermal resistance is 18 K/W, enabling high surge handling up to 800 W for ≤100 µs pulses while maintaining 175 °C max junction temperature.
The HPZR-C35-QX exhibits 33.3 V minimum and 36.8 V maximum Zener voltage at IZ = 1 mA, with reverse current capped at 0.1 µA at rated VR and differential resistance of 30 Ω - confirming tight regulation performance suitable for reference and protection functions in low-current analog subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 33.3 V to 36.8 V at IZ = 1 mA - defines precise clamping threshold for 35 V nominal rail protection |
| Differential Resistance (RZ) | 30 Ω at IZ = 20 mA - ensures minimal voltage shift under dynamic load transients |
| Total Power Dissipation (Ptot) | 5500 mW at Tsp = 75 °C (zero lead length) - supports sustained regulation in thermally constrained PCB layouts |
| ESD Rating | 30 kV per IEC 61000-4-2 contact discharge - provides immunity against assembly and field electrostatic events |
| AEC-Q101 Qualified | Qualified for automotive applications - meets stress test requirements for discrete semiconductors in harsh environments |
| Forward Voltage (VF) | ≤1 V at IF = 100 mA - enables predictable forward conduction during fault conditions or bidirectional protection schemes |
| Thermal Resistance (Rth(j-sp)) | 18 K/W - allows efficient heat transfer from junction to solder point on standard FR4 with 1 cm² cathode pad |
Pinout & Package
HPZR-C35-QX uses the CFP3 (SOD123W) surface-mount plastic package: 2.6 mm × 1.7 mm × 1.0 mm body, flat lead profile, and cathode-marked with a bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; requires 1 cm² copper pad for thermal management and power dissipation |
| 2 | Anode (A) | Connected to ground or lower-potential reference; forms reverse-bias path during Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| High Surge Power Handling | 800 W non-repetitive peak power for ≤100 µs pulses - protects downstream circuitry from transient overvoltage events |
| Precision Voltage Regulation | ±5 % tolerance on 35 V nominal Zener voltage - reduces need for post-production calibration in reference designs |
| Automotive-Grade Reliability | AEC-Q101 qualified with -55 °C to +175 °C operating range - validated for under-hood ECU, lighting, and sensor interface modules |
| Low-Lead-Inductance Package | CFP3 (SOD123W) footprint with short internal leads - minimizes parasitic inductance during fast transient suppression |
| ESD-Robust Construction | 30 kV contact discharge rating - eliminates need for external ESD protection in many automotive sub-systems |
Applications
| Engine Control Unit (ECU) Sensor Reference | Automotive LED Headlamp Current Sense Protection |
|---|---|
Use Scenario: Provides stable 35 V reference for analog front-end circuits measuring throttle position or manifold pressure. IC Role / Device Role / Timing Role: Zener voltage regulator establishing precision bias point for op-amp input stages and ADC references. Use Value: Maintains <±0.5 V drift over temperature and life, ensuring consistent sensor signal conditioning without recalibration. |
Use Scenario: Clamps transient voltage spikes induced by inductive switching in high-brightness LED driver circuits. IC Role / Device Role / Timing Role: Reverse-biased protection diode absorbing 800 W surges for ≤100 µs to prevent LED driver IC damage. Use Value: Eliminates need for TVS diodes in cost-sensitive headlamp modules while meeting ISO 7637-2 pulse 5a requirements. |
| Body Control Module (BCM) LIN Bus Protection | Automotive HVAC Blower Motor Controller |
Use Scenario: Shields LIN transceiver pins from load-dump-induced overvoltage during battery disconnect/reconnect events. IC Role / Device Role / Timing Role: Standby Zener clamp limiting bus voltage to 35 V during 12 V system transients. Use Value: Prevents latch-up in LIN PHY ICs with 36 V absolute maximum ratings, extending functional safety margin. |
Use Scenario: Regulates auxiliary 35 V supply rail powering motor gate drivers and Hall-effect feedback sensors. IC Role / Device Role / Timing Role: Primary voltage regulator maintaining stable bias for half-bridge gate drivers and microcontroller peripherals. Use Value: Delivers 5.5 W continuous dissipation at 75 °C solder point temperature, enabling compact heatsink-free design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C36 | 36 V nominal, ±5 %, SOT23 package, Ptot = 300 mW at Tamb = 25 °C | Limited to low-power signal-level clamping; not AEC-Q101 qualified | Select only for non-automotive, low-current (<10 mA) reference use where thermal performance is secondary |
| MMSZ5241B | 36 V nominal, ±5 %, SOD123 package, Ptot = 500 mW at Tamb = 25 °C | Lacks AEC-Q101 qualification and 30 kV ESD rating; RZ = 50 Ω at IZ = 20 mA | Acceptable for industrial control boards requiring basic 36 V regulation but not for automotive deployment |
Compared with BZX84-C36 and MMSZ5241B, HPZR-C35-QX offers 11× higher power dissipation, automotive qualification, and superior ESD immunity - making it the sole choice for thermally demanding, safety-critical 35 V regulation in vehicle electronics.
Availability
HPZR-C35-QX is available at Aetrix Electronics and suitable for automotive engine control units, LED lighting systems, and body electronics requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for HPZR-C35-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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.
The HPZR-Q series belongs to Nexperia's high-power Zener regulator product line, engineered specifically for automotive-grade voltage reference and transient protection in space-constrained, thermally aggressive environments.
FAQ
What is the Zener test current for HPZR-C35-QX?
The HPZR-C35-QX is characterized at IZ = 1 mA, as specified in Table 12 of the datasheet. This low test current enables accurate voltage measurement in high-impedance reference circuits and ensures stable regulation even when bias current is limited by upstream resistors.
Can HPZR-C35-QX be used in parallel for higher power handling?
No - HPZR-C35-QX is not designed for parallel operation due to mismatch in Zener voltage and dynamic impedance. Parallel connection risks current hogging and thermal runaway; instead, use a single unit with proper PCB thermal design or select a higher-rated device like HPZR-C35-QY (if available) for increased dissipation.
Is the cathode pad required to be 1 cm² for all operating conditions?
Yes - the 1 cm² cathode pad is mandatory to achieve the rated 5.5 W power dissipation at Tsp = 75 °C. Smaller pads increase thermal resistance, reducing safe operating power and risking premature thermal failure; layout must follow Figure 11 footprint guidelines for reflow soldering.
Does HPZR-C35-QX support bidirectional transient suppression?
No - HPZR-C35-QX is a unidirectional Zener diode optimized for reverse-bias clamping. For bidirectional protection, pair it with a series-connected standard diode or use a dedicated bidirectional TVS like PESD5V0S1BA; forward conduction is limited to ≤1 V at 100 mA and not rated for surge absorption.
HPZR-C35-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):
- 35 V
- Tolerance:
- ±5%
- Power - Max:
- 682 mW
- Impedance (Max) (Zzt):
- 46.64 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 30 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-C35-QX FAQ
1.How can I place an order for HPZR-C35-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for HPZR-C35-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-C35-QX reliable?
The price and inventory of HPZR-C35-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-C35-QX is usually 5 days.
3.What payment methods are accepted for HPZR-C35-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HPZR-C35-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HPZR-C35-QX?
HPZR-C35-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HPZR-C35-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-C35-QX?
For technical support, including HPZR-C35-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HPZR-C35-QX requirements.
6.How does Aetrix verify that HPZR-C35-QX is sourced from the original manufacturer or authorized distributors?
All HPZR-C35-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-C35-QX meets industry standards.
7.What is the process for return or replacement of HPZR-C35-QX?
All HPZR-C35-QX units undergo pre-shipment inspection (PSI). If there is an issue with HPZR-C35-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-C35-QX part is unused and in its original packaging.
Return procedure for HPZR-C35-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HPZR-C35-QX Tags
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