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Nexperia USA Inc. PZU84-C39-QR
- Part No.:
- PZU84-C39-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PZU84-C39-QR.pdf
- Description:
- DIODE ZENER 36V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,461
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Product details
Overview
PZU84-C39-QR from Nexperia is a ±5 % tolerance Zener voltage regulator diode with nominal 39 V breakdown voltage, 350 Ω differential resistance at IZ = 2 mA, and 0.05 μA reverse current at VR = 39 V, housed in an AEC-Q101-qualified SOT23 package for automotive power rail stabilization and overvoltage clamping.
For engineers reviewing the PZU84-C39-QR datasheet, PZU84-C39-QR pinout, PZU84-C39-QR application, or PZU84-C39-QR equivalent, this device supports precision voltage reference generation, ESD protection interface clamping, and low-leakage biasing in engine control units, ADAS sensor supply rails, and infotainment power management circuits.
Technical Context
This Zener diode operates in reverse-bias breakdown mode to maintain stable 39 V regulation across load and temperature variations, with a hard breakdown knee and intentional minor leakage rise optimized for fast switching and noise reduction per AN90031.
Its thermal resistance from junction to solder point is 330 K/W, enabling reliable operation up to 150 °C junction temperature, and it delivers non-repetitive peak reverse power dissipation of 40 W for 100 μs surges under defined test conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 37.0 V to 41.0 V at IZ = 2 mA - defines regulated output voltage range for clamp/reference function |
| Differential Resistance (rdif) | 350 Ω max at IZ = 2 mA - determines regulation stiffness and output impedance under dynamic load |
| Reverse Current (IR) | 0.05 μA max at VR = 39 V - ensures minimal standby power loss in high-impedance bias networks |
| Total Power Dissipation (Ptot) | 250 mW at Tamb = 25 °C on FR4 PCB - sets continuous DC power handling limit in standard layout |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 μs square wave - enables transient surge suppression without failure |
| Junction Temperature (Tj) | −55 °C to +150 °C - supports operation in under-hood automotive environments |
| AEC-Q101 Qualified | Stress-tested per Automotive Electronics Council standard - validated for automotive-grade reliability |
Pinout & Package
Package: SOT23 plastic surface-mounted package; 3-terminal, 1.9 mm pitch, 2.9 mm × 1.3 mm × 1 mm body; tin-plated copper footprint compatible with reflow and wave soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-biased terminal; connects to lower-potential node in Zener clamp configuration |
| 2 | Not Connected (n.c.) | Internally unconnected; must remain floating or grounded per layout guidelines to avoid parasitic coupling |
| 3 | Cathode (K) | Reverse-biased terminal; connects to higher-potential node and serves as primary regulation reference point |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % Zener voltage tolerance | Enables cost-optimized selection where tight regulation is secondary to robustness and availability |
| Hard breakdown knee | Ensures sharp, predictable turn-on behavior critical for overvoltage protection response time |
| Optimized leakage for noise reduction | Intentional minor leakage rise improves RF immunity and reduces switching-induced ripple in sensitive analog rails |
| AEC-Q101 qualification | Validates performance across temperature cycling, humidity, mechanical shock, and HTRB stress for automotive deployment |
| SOT23 footprint compatibility | Supports automated placement and reflow in high-volume PCB assembly without redesign or adapter |
Applications
| Engine Control Unit (ECU) Power Clamp | ADAS Camera Sensor Bias Reference |
|---|---|
Use Scenario: Clamps 12 V battery rail transients during load dump events in gasoline/diesel ECUs. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to shunt excess energy into ground path. Use Value: Limits voltage excursions to ≤41 V, protecting downstream MCU and CAN transceivers rated for 40 V absolute max. |
Use Scenario: Provides stable 39 V bias for CCD/CMOS image sensor analog front-end amplifiers. IC Role / Device Role / Timing Role: Precision voltage reference source with low temperature coefficient drift. Use Value: Maintains <±2.5 % output stability over −40 °C to +125 °C ambient, ensuring consistent sensor gain calibration. |
| Infotainment System ESD Protection | Electric Power Steering (EPS) Feedback Divider |
Use Scenario: Placed across LIN bus lines to absorb 8 kV contact ESD pulses per ISO 10605. IC Role / Device Role / Timing Role: Fast-response clamping diode absorbing transient energy before IC input pins. Use Value: Achieves <100 ns response time due to hard knee and low capacitance (45 pF), preventing latch-up in LIN transceivers. |
Use Scenario: Forms upper leg of resistor divider feeding motor phase current feedback to EPS controller ADC. IC Role / Device Role / Timing Role: Zener-stabilized reference node defining divider ratio accuracy. Use Value: Enables ±0.5 % current measurement accuracy by holding reference voltage stable despite 12 V rail fluctuations. |
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-C39,115 | Same 39 V nominal, ±5 % tolerance, but SOT23-3L package with no n.c. pin; rdif = 400 Ω max at IZ = 5 mA | Lacks AEC-Q101 qualification; not recommended for automotive production | Select only for non-automotive prototypes or cost-sensitive industrial designs where qualification is waived |
| MMSZ5241B-TP | 39 V nominal, ±5 %, but higher leakage (1.0 μA at VR = 39 V); rdif = 500 Ω max at IZ = 20 mA | Designed for general-purpose use; lacks optimized noise/switching characteristics per AN90031 | Acceptable for non-critical power rails where low-noise biasing is not required |
Compared with BZX84-C39,115 and MMSZ5241B-TP, PZU84-C39-QR provides automotive-qualified reliability, lower leakage, and application-specific noise optimization-making it the sole choice for safety-critical 39 V reference and clamp functions in production vehicles.
Availability
PZU84-C39-QR is available at Aetrix Electronics and suitable for engine control units, ADAS camera modules, and electric power steering systems requiring stable component supply with full automotive traceability and long-term lifecycle support.
Supply support for PZU84-C39-QR 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.
PZU84-C39-QR belongs to the PZU84-Q series of AEC-Q101 Zener regulators, engineered specifically for automotive power rail stabilization, ESD protection, and precision biasing in harsh-environment electronic control modules.
FAQ
What is the maximum continuous forward current rating for PZU84-C39-QR?
The device has no specified continuous forward current rating because it is designed exclusively for reverse-bias Zener operation. Forward conduction is limited to brief pulses (≤300 μs) with VF ≤ 0.9 V at IF = 10 mA; sustained forward bias risks thermal runaway and permanent damage.
Can PZU84-C39-QR be used in parallel for higher power dissipation?
No-Zener diodes exhibit negative temperature coefficients below ~5 V and positive above, causing current hogging and thermal instability when paralleled. For >250 mW requirements, use external series resistors or active regulation instead of parallel Zeners.
How does the "C" suffix in PZU84-C39-QR affect its electrical behavior?
The "C" denotes the ±5 % tolerance variant within the PZU84-Q series and corresponds to the higher-voltage group (≥39 V) with intentionally elevated leakage current to improve switching speed and reduce high-frequency noise-distinct from the "B" series' ultra-low-leakage profile.
Is the n.c. pin (Pin 2) required to be left floating in PCB layout?
Yes-Pin 2 is internally unconnected and must remain electrically isolated. Grounding or routing traces to it introduces parasitic capacitance and may degrade high-frequency noise performance; Nexperia's SOT23 footprint guidelines explicitly require Pin 2 to be unconnected in both layout and solder mask.
PZU84-C39-QR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- PZU84-Q
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 36 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 130 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 29.6 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
PZU84-C39-QR FAQ
1.How can I place an order for PZU84-C39-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU84-C39-QR 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 PZU84-C39-QR reliable?
The price and inventory of PZU84-C39-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU84-C39-QR is usually 5 days.
3.What payment methods are accepted for PZU84-C39-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU84-C39-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU84-C39-QR?
PZU84-C39-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU84-C39-QR 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 PZU84-C39-QR?
For technical support, including PZU84-C39-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU84-C39-QR requirements.
6.How does Aetrix verify that PZU84-C39-QR is sourced from the original manufacturer or authorized distributors?
All PZU84-C39-QR 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 PZU84-C39-QR meets industry standards.
7.What is the process for return or replacement of PZU84-C39-QR?
All PZU84-C39-QR units undergo pre-shipment inspection (PSI). If there is an issue with PZU84-C39-QR, 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 PZU84-C39-QR part is unused and in its original packaging.
Return procedure for PZU84-C39-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU84-C39-QR Tags
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