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Nexperia USA Inc. PZU84-C3V3-QR
- Part No.:
- PZU84-C3V3-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PZU84-C3V3-QR.pdf
- Description:
- DIODE ZENER 3.3V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,757
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Product details
Overview
PZU84-C3V3-QR from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT23 package, delivering 3.1 V to 3.5 V nominal breakdown voltage at 5 mA, with 95 Ω differential resistance and ≤5 μA reverse leakage at rated voltage. It operates across −55 °C to +150 °C ambient, qualified to AEC-Q101, and used for precision voltage reference and overvoltage protection in automotive power rails.
For engineers reviewing the PZU84-C3V3-QR datasheet, PZU84-C3V3-QR pinout, PZU84-C3V3-QR application, or PZU84-C3V3-QR equivalent, this page provides verified Zener parameters, automotive-grade thermal limits, SOT23 terminal mapping, and validated alternatives for 3.3 V regulation circuits requiring low dynamic impedance and hard breakdown knee.
Technical Context
This Zener diode belongs to the PZU84-C subseries optimized for stable low-current regulation: it exhibits a sharp, hard breakdown knee and very low leakage current (≤5 μA at VR = 3.3 V), enabling accurate clamping in bias networks and feedback paths. Its temperature coefficient is −3.5 mV/K at 5 mA, supporting predictable drift compensation in analog sensing circuits.
The device uses silicon planar technology with an anode–cathode–NC three-terminal configuration in SOT23. With Rth(j-a) = 500 K/W and Rth(j-sp) = 330 K/W, thermal performance is defined for FR4 PCB mounting-critical for sustained 250 mW dissipation in compact automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener voltage VZ | 3.1 V to 3.5 V at IZ = 5 mA - defines precise clamping threshold for 3.3 V rail stabilization |
| Differential resistance rdif | 95 Ω at IZ = 5 mA - ensures minimal voltage shift under load variation in reference circuits |
| Reverse leakage IR | ≤5 μA at VR = 3.3 V - enables low-power standby operation without excessive quiescent drain |
| Power dissipation Ptot | 250 mW at Tamb = 25 °C on FR4 - sets maximum continuous DC power handling in standard PCB layout |
| Junction temperature Tj | −55 °C to +150 °C - supports operation in under-hood automotive environments without derating |
| Thermal resistance Rth(j-a) | 500 K/W - determines steady-state temperature rise above ambient at full power |
| AEC-Q101 qualification | Qualified - confirms reliability for automotive electronics per stress-test standard for discrete semiconductors |
Pinout & Package
SOT23 plastic surface-mounted package: 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch, 3-terminal configuration with cathode tab solder point.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-biased input terminal; connects to lower-potential node in reverse-bias regulation mode |
| 2 | Not connected (n.c.) | Internally isolated; no electrical function-must remain unconnected in PCB layout |
| 3 | Cathode (K) | Regulated output terminal; ties to reference node or feedback path in shunt regulator topology |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables tight 3.3 V rail margin control without post-assembly trimming in automotive ECUs |
| Hard breakdown knee | Ensures rapid transition from blocking to conduction-critical for transient overvoltage suppression |
| Very low leakage (≤5 μA) | Minimizes error current in high-impedance feedback dividers of LDOs and op-amp references |
| AEC-Q101 qualification | Validates robustness against temperature cycling, humidity, and mechanical shock in automotive deployment |
| Low differential resistance (95 Ω) | Reduces output voltage deviation under dynamic load steps in sensor biasing and ADC reference applications |
Applications
| Automotive Body Control Module (BCM) Voltage Reference | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable 3.3 V reference for microcontroller ADC inputs and CAN transceiver bias in BCMs. IC Role / Device Role / Timing Role: Shunt Zener regulator maintaining reference node integrity during battery voltage fluctuations (9 V–16 V). Use Value: Hard breakdown knee and ≤5 μA leakage ensure <±10 mV reference drift across temperature and aging-meeting ASIL-B functional safety margins. |
Use Scenario: Biasing bridge sensors and setting gain in 4–20 mA transmitter front-ends. IC Role / Device Role / Timing Role: Precision voltage clamp defining common-mode level for instrumentation amplifiers. Use Value: 95 Ω differential resistance minimizes gain error induced by sensor current draw, improving measurement linearity to ±0.1 % FS. |
| Automotive Infotainment Power Sequencing | Medical Diagnostic Equipment Reference |
Use Scenario: Enabling controlled power-up sequencing of SoC cores and peripherals via voltage-dependent enable signals. IC Role / Device Role / Timing Role: Zener-triggered reset generator ensuring 3.3 V rail reaches regulation before releasing processor reset. Use Value: −3.5 mV/K temperature coefficient allows predictable timing window across −40 °C to +85 °C operating range. |
Use Scenario: Stabilizing excitation voltage for precision thermistor and RTD measurement bridges. IC Role / Device Role / Timing Role: Low-noise shunt reference replacing higher-cost bandgap ICs in portable diagnostic devices. Use Value: 250 mW power rating and 500 K/W thermal resistance support continuous operation in sealed enclosures without forced cooling. |
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-C3V3,115 | Same SOT23 package, ±5 % tolerance, 100 Ω rdif, 10 μA IR at 3.3 V | Higher leakage and looser tolerance reduce accuracy in precision reference use cases | Select when cost sensitivity outweighs 3.3 V rail stability requirements in non-safety-critical consumer modules |
| MMSZ5226B-7-F | SOD-123 package, ±5 % tolerance, 17 Ω rdif, 5 μA IR, but not AEC-Q101 qualified | Larger footprint and lack of automotive qualification limit use to industrial/commercial designs only | Choose for space-constrained boards where lower dynamic impedance is prioritized over automotive compliance |
Compared with BZX84-C3V3,115, PZU84-C3V3-QR delivers tighter tolerance and lower leakage for improved reference accuracy; versus MMSZ5226B-7-F, it trades slightly higher rdif for guaranteed AEC-Q101 reliability and smaller SOT23 footprint in automotive ECU layouts.
Availability
PZU84-C3V3-QR is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioning, and medical diagnostic equipment requiring stable component supply with AEC-Q101 assurance.
Supply support for PZU84-C3V3-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.
PZU84-Q series belongs to Nexperia's AEC-Q101-qualified Zener regulator portfolio, engineered specifically for stable voltage reference and overvoltage protection in harsh automotive environments.
FAQ
What is the maximum continuous reverse power dissipation for PZU84-C3V3-QR?
The maximum continuous reverse power dissipation is 250 mW at 25 °C ambient on a standard FR4 PCB with single-sided 70 μm copper. Derating is required above 25 °C at 2.5 mW/°C based on Rth(j-a) = 500 K/W, limiting usable power to 125 mW at 75 °C ambient.
Does PZU84-C3V3-QR have a connected third pin?
No. Pin 2 is explicitly marked "n.c." (not connected) in the official pinning diagram and must remain unconnected in PCB layout. Only pins 1 (anode) and 3 (cathode) carry functional current; connecting pin 2 risks internal damage or undefined behavior.
How does the temperature coefficient affect regulation accuracy over automotive temperature ranges?
With a specified SZ of −3.5 mV/K at 5 mA, the Zener voltage shifts −0.35 V from −40 °C to +125 °C ambient-approximately −10.5 % of nominal 3.3 V. This drift is predictable and compensated in closed-loop systems, but requires margining in open-loop reference designs.
Can PZU84-C3V3-QR be used in place of a 3.3 V LDO for local regulation?
No-it is a shunt regulator, not a series regulator. It sinks excess current to maintain voltage, requiring a series resistor and generating heat proportional to load variation. It replaces LDOs only in ultra-low-quiescent-current, low-precision applications like reset generation or biasing-not for powering active loads directly.
PZU84-C3V3-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):
- 3.3 V
- Tolerance:
- ±6.06%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1 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-C3V3-QR FAQ
1.How can I place an order for PZU84-C3V3-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU84-C3V3-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-C3V3-QR reliable?
The price and inventory of PZU84-C3V3-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-C3V3-QR is usually 5 days.
3.What payment methods are accepted for PZU84-C3V3-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU84-C3V3-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU84-C3V3-QR?
PZU84-C3V3-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU84-C3V3-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-C3V3-QR?
For technical support, including PZU84-C3V3-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU84-C3V3-QR requirements.
6.How does Aetrix verify that PZU84-C3V3-QR is sourced from the original manufacturer or authorized distributors?
All PZU84-C3V3-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-C3V3-QR meets industry standards.
7.What is the process for return or replacement of PZU84-C3V3-QR?
All PZU84-C3V3-QR units undergo pre-shipment inspection (PSI). If there is an issue with PZU84-C3V3-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-C3V3-QR part is unused and in its original packaging.
Return procedure for PZU84-C3V3-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU84-C3V3-QR Tags
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