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Nexperia USA Inc. PZU84-C3V0R
- Part No.:
- PZU84-C3V0R
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PZU84-C3V0R.pdf
- Description:
- DIODE ZENER 3V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,749
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Product details
Overview
PZU84-C3V0R from Nexperia is a general-purpose Zener voltage regulator diode in SOT23 package, designed for precision voltage reference and overvoltage protection in low-power analog and digital circuits. It delivers a nominal 3.0 V Zener voltage with ±2 % tolerance, 10 μA reverse leakage at VR = 1.0 V, and 95 Ω differential resistance at IZ = 5 mA - enabling stable regulation in battery-powered sensors and microcontroller reset circuits.
For engineers reviewing the PZU84-C3V0R datasheet, PZU84-C3V0R pinout, PZU84-C3V0R application, or PZU84-C3V0R equivalent, key selection criteria include its low dynamic impedance at low currents, hard breakdown knee, and compatibility with standard SOT23 reflow footprints on FR4 PCBs.
Technical Context
This Zener diode operates in reverse-bias breakdown mode to maintain a stable reference voltage across its cathode–anode terminals. Its design emphasizes low leakage (≤10 μA at VR = 1.0 V) and sharp knee characteristics, achieved via optimized doping profiles for predictable turn-on behavior under low-current bias conditions (IZ ≥ 0.5 mA).
The device exhibits a negative temperature coefficient of −3.5 mV/K at IZ = 5 mA and VZ = 3.0 V, supporting predictable thermal drift compensation in voltage references. Thermal resistance from junction to solder point is 330 K/W, confirming suitability for compact layouts with minimal copper area.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.80 V to 3.20 V at IZ = 5 mA - ensures tight 3.0 V regulation for MCU brown-out detection |
| Differential Resistance (rdif) | 95 Ω max at IZ = 5 mA - minimizes output voltage shift under load current variation |
| Reverse Leakage (IR) | 10 μA max at VR = 1.0 V - preserves battery life in always-on monitoring circuits |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - enables use as polarity-protected clamp in bidirectional signal lines |
| Total Power Dissipation (Ptot) | 250 mW at Tamb = 25 °C on standard FR4 - supports continuous operation in ambient temperatures up to +125 °C derated |
| Junction Temperature (Tj) | −55 °C to +150 °C - validated for industrial-grade reliability without external heatsinking |
| Capacitance (Cd) | 425 pF at f = 1 MHz, VR = 0 V - limits high-frequency noise coupling in analog front-ends |
Pinout & Package
Package: SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch), optimized for automated placement and reflow soldering per IPC-7351B footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | Anode terminal | Connected to lower-potential node; reverse-biased during regulation; must be routed with low-inductance trace for transient suppression |
| 2 (n.c.) | Not connected | Internally unconnected; no electrical function; must remain floating - not tied to ground or supply |
| 3 (Cathode) | Cathode terminal | Connected to regulated voltage node; serves as reference output; solder point defines thermal path to PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| Hard breakdown knee | Enables precise 3.0 V threshold triggering in reset and clamp circuits without soft saturation |
| Very low leakage at low VR | ≤10 μA at 1.0 V reverse bias - critical for multi-year battery operation in IoT endpoint nodes |
| ±2 % VZ tolerance | Guarantees 2.80–3.20 V regulation window without post-production trimming |
| Low dynamic impedance | 95 Ω max at 5 mA - maintains <15 mV output deviation across ±1 mA load current changes |
| SOT23 footprint compatibility | Matches JEDEC TO-236AB standard - allows drop-in replacement in existing designs using 0.6 mm pad width |
Applications
| Microcontroller Reset Circuit | Battery Voltage Monitor |
|---|---|
Use Scenario: Generating a clean, temperature-stable reset signal when supply drops below 3.0 V in an ARM Cortex-M0+ system. IC Role / Device Role / Timing Role: Zener diode acts as precision voltage threshold detector feeding comparator input; defines exact reset assertion level. Use Value: Hard knee and ±2 % tolerance ensure reset triggers within 15 mV of nominal 3.0 V, eliminating false resets during brown-out recovery. |
Use Scenario: Monitoring Li-ion cell voltage (2.5–4.2 V range) in portable medical devices to prevent deep discharge. IC Role / Device Role / Timing Role: Provides fixed 3.0 V reference for ADC input scaling and comparator hysteresis setting. Use Value: 10 μA leakage at 1.0 V reverse bias extends battery runtime by >12 months in sleep-mode operation. |
| ESD Protection Clamp | Reference Voltage Source |
Use Scenario: Protecting UART TX/RX pins against ±8 kV HBM ESD events in industrial gateways. IC Role / Device Role / Timing Role: Placed between signal line and ground to shunt transients while clamping voltage to ≤3.2 V peak. Use Value: 40 W non-repetitive peak power rating (tp = 100 μs) absorbs ESD energy without degradation. |
Use Scenario: Supplying stable 3.0 V reference to a 12-bit SAR ADC in a precision temperature sensor module. IC Role / Device Role / Timing Role: Functions as passive voltage reference with minimal series resistance impact on ADC accuracy. Use Value: 95 Ω differential resistance contributes <0.05 LSB error at full-scale 3.3 V input, preserving 12-bit linearity. |
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-C3V0 | ±5 % tolerance (2.85–3.15 V), 120 Ω rdif at 5 mA, 50 μA IR at VR = 1 V | Higher leakage and looser tolerance reduce accuracy in precision reset or ADC reference use | Select only where cost sensitivity outweighs regulation stability requirements |
| MMSZ4683 | ±5 % tolerance, 100 Ω rdif, 5 μA IR at VR = 1 V, but rated only to 350 mW Ptot | Lower leakage benefits ultra-low-power apps, but higher Ptot rating risks thermal mismatch on same PCB layout | Prefer for battery-critical designs if board layout accommodates revised thermal relief |
Compared with PZU84-C3V0R, BZX84-C3V0 trades regulation precision for lower unit cost, while MMSZ4683 improves leakage performance but requires validation of thermal dissipation on identical FR4 land patterns.
Availability
PZU84-C3V0R is available at Aetrix Electronics and suitable for microcontroller reset circuits, battery voltage monitors, ESD protection clamps, and precision reference voltage sources requiring stable component supply across industrial, medical, and consumer electronics programs.
Supply support for PZU84-C3V0R 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 PZU84 series belongs to Nexperia's general-purpose Zener regulator portfolio, engineered specifically for stable voltage reference and overvoltage protection in space-constrained, low-power applications where sharp knee behavior and low leakage are essential.
FAQ
What is the maximum reverse current the PZU84-C3V0R can sustain continuously?
The device is rated for continuous operation up to 200 mA forward current, but as a Zener regulator it is intended for reverse-bias operation. Its maximum continuous reverse current is limited by power dissipation: at 3.0 V, this equates to ~83 mA (250 mW ÷ 3.0 V) at Tamb = 25 °C with proper PCB copper area. Derating applies above 25 °C ambient.
Can PZU84-C3V0R replace a 3.3 V Zener diode in a circuit?
No - PZU84-C3V0R is specified for 3.0 V nominal regulation (2.80–3.20 V). Using it in place of a 3.3 V part will cause premature conduction and incorrect voltage thresholds. For 3.3 V, select PZU84-C3V3 (2.95–3.50 V range) instead.
Is Pin 2 internally connected, and what happens if it's grounded?
Pin 2 is explicitly marked "n.c." (not connected) in the official Nexperia datasheet and has no internal bond wire or silicon connection. Grounding it introduces no electrical effect but violates recommended layout practice; it should remain unconnected and un-soldered to avoid potential contamination or mechanical stress.
How does temperature affect the Zener voltage of PZU84-C3V0R?
It exhibits a negative temperature coefficient of −3.5 mV/K at IZ = 5 mA, meaning VZ decreases by approximately 3.5 mV per degree Celsius rise in junction temperature. Over −40 °C to +125 °C operating range, this results in ~0.58 V total drift, which must be accounted for in high-accuracy reference designs.
PZU84-C3V0R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- PZU84
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
PZU84-C3V0R FAQ
1.How can I place an order for PZU84-C3V0R through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU84-C3V0R 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-C3V0R reliable?
The price and inventory of PZU84-C3V0R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU84-C3V0R is usually 5 days.
3.What payment methods are accepted for PZU84-C3V0R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU84-C3V0R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU84-C3V0R?
PZU84-C3V0R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU84-C3V0R 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-C3V0R?
For technical support, including PZU84-C3V0R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU84-C3V0R requirements.
6.How does Aetrix verify that PZU84-C3V0R is sourced from the original manufacturer or authorized distributors?
All PZU84-C3V0R 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-C3V0R meets industry standards.
7.What is the process for return or replacement of PZU84-C3V0R?
All PZU84-C3V0R units undergo pre-shipment inspection (PSI). If there is an issue with PZU84-C3V0R, 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-C3V0R part is unused and in its original packaging.
Return procedure for PZU84-C3V0R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU84-C3V0R Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
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SMAZ12-13-F
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