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Nexperia USA Inc. PZU84-C4V7R
- Part No.:
- PZU84-C4V7R
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PZU84-C4V7R.pdf
- Description:
- DIODE ZENER 4.7V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,640
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Product details
Overview
PZU84-C4V7R from Nexperia is a general-purpose Zener voltage regulator diode in SOT23 package, providing precise 4.7 V nominal regulation at 5 mA with ±5 % tolerance, 800 Ω typical differential resistance, and 0.2 mV/K temperature coefficient - used for low-power voltage reference and overvoltage protection in power supply feedback loops.
For engineers reviewing the PZU84-C4V7R datasheet, PZU84-C4V7R pinout, PZU84-C4V7R application, or PZU84-C4V7R equivalent, key selection criteria include Zener voltage accuracy at low test current (IZ = 5 mA), dynamic impedance under regulation, thermal resistance to ambient (500 K/W), and non-repetitive surge capability (40 W @ 100 μs).
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its cathode–anode terminals. Its hard breakdown knee and low leakage current (≤2 μA at VR = 4.7 V) support precision biasing in analog circuits and clean reference generation for ADCs or comparators.
The device belongs to the PZU84-C subseries optimized for low-current regulation (IZ = 5 mA), featuring intentionally lower dynamic impedance (800 Ω typ.) and minimal temperature drift (±0.2 mV/K) compared to the B-series variants designed for switching noise reduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.42 V to 4.90 V at IZ = 5 mA - defines tight regulation window for 4.7 V nominal reference |
| Differential Resistance (rdif) | 800 Ω typical at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Temperature Coefficient (SZ) | ±0.2 mV/K at IZ = 5 mA - ensures <±1.5 mV drift over 0–70 °C ambient range |
| Reverse Current (IR) | ≤2 μA at VR = 4.7 V - enables low-quiescent-power standby operation |
| Total Power Dissipation (Ptot) | 250 mW at Tamb = 25 °C on FR4 PCB - sets maximum continuous DC power handling |
| Non-repetitive Peak Power (PZSM) | 40 W at tp = 100 μs - supports transient overvoltage clamping without failure |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - allows use as polarity-sensitive clamp or series diode |
Pinout & Package
Package: SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch), rated for reflow and wave soldering per JEDEC standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | Anode terminal | Connected to lower-potential node in reverse-bias configuration; carries forward current during fault conditions |
| 2 (n.c.) | Not connected | Internally unconnected; must remain floating - no PCB trace or pad connection permitted |
| 3 (Cathode) | Cathode terminal | Connected to regulated output node; provides reference potential and carries reverse breakdown current |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % Zener voltage tolerance | Enables cost-effective precision regulation without trimming, suitable for consumer-grade power rails |
| Low dynamic impedance (800 Ω typ.) | Minimizes output voltage variation under load changes in feedback networks and sensor biasing |
| Hard breakdown knee | Ensures sharp, predictable turn-on behavior critical for accurate voltage limiting and reference stability |
| Very low leakage (≤2 μA) | Reduces error current in high-impedance reference paths and extends battery life in portable devices |
| SOT23 footprint compatibility | Supports automated placement and reflow assembly; matches industry-standard 0805-equivalent land pattern |
Applications
| Power Supply Feedback Reference | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Stabilizing output voltage of isolated DC-DC converters via optocoupler feedback loop. IC Role / Device Role: Provides fixed 4.7 V reference to TL431-like shunt regulator IC input. Use Value: Maintains ±1 % output regulation across line/load variations due to tight VZ tolerance and low rdif. |
Use Scenario: Protecting microcontroller I/O pins from ESD-induced voltage spikes on 5 V bus lines. IC Role / Device Role: Acts as passive clamping element between signal line and ground. Use Value: Limits transient voltage to ≤4.9 V before damage threshold, leveraging 40 W surge rating. |
| ADC Reference Biasing | Low-Power Sensor Excitation |
Use Scenario: Generating stable bias voltage for bridge-based pressure sensors feeding 12-bit SAR ADC. IC Role / Device Role: Supplies excitation reference to Wheatstone bridge and ADC reference input. Use Value: Delivers <±1.5 mV drift over operating temperature, preserving measurement accuracy. |
Use Scenario: Providing regulated 4.7 V excitation to thermistor networks in battery-powered IoT nodes. IC Role / Device Role: Serves as low-quiescent-current voltage source for resistive sensing elements. Use Value: Draws only ≤2 μA leakage, extending coin-cell battery life beyond 5 years. |
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-C4V7 | Same 4.7 V nominal, ±5 % tolerance, but higher rdif (1000 Ω typ. at 5 mA) and higher IR (5 μA) | Less stable under varying load; unsuitable for high-precision references | Select when cost is primary constraint and regulation stability >1 % is acceptable |
| MMSZ4704T1G | 4.7 V, ±5 %, but rated for 500 mW Ptot and uses SOD-123 package (larger footprint) | Higher power handling enables use in higher-current clamp circuits | Select when surge energy exceeds 40 W or board space permits larger SOD-123 layout |
Compared with BZX84-C4V7 and MMSZ4704T1G, PZU84-C4V7R delivers superior low-current regulation stability (800 Ω rdif vs. 1000 Ω) and lower leakage (2 μA vs. 5 μA), while maintaining SOT23 compatibility - making it optimal for space-constrained, precision-biased analog subsystems.
Availability
PZU84-C4V7R is available at Aetrix Electronics and suitable for power supply feedback, overvoltage protection, and low-power sensor excitation requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for PZU84-C4V7R 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 product line, engineered for cost-sensitive yet performance-stable voltage reference and protection functions in consumer, industrial, and computing power systems.
FAQ
What is the maximum continuous reverse current the PZU84-C4V7R can sustain without exceeding its power rating?
At Tamb = 25 °C on standard FR4 PCB, PZU84-C4V7R has a 250 mW total power dissipation limit. With nominal VZ = 4.7 V, the maximum continuous reverse current is approximately 53 mA (250 mW ÷ 4.7 V). Derating applies above 25 °C per Rth(j-a) = 500 K/W.
Does the 'n.c.' pin (pin 2) require any PCB layout consideration?
Yes - pin 2 is internally not connected and must remain electrically floating. No copper trace, solder mask opening, or thermal pad should contact this terminal. Connecting it risks internal shorting or unpredictable leakage behavior, violating the device's specified isolation integrity.
How does the temperature coefficient of ±0.2 mV/K impact regulation accuracy over industrial temperature range?
Across −40 °C to +85 °C (ΔT = 125 K), the worst-case VZ shift is ±25 mV (125 K × 0.2 mV/K), representing ±0.53 % deviation from 4.7 V nominal. This remains within typical system-level tolerance budgets for non-automotive reference applications.
Can PZU84-C4V7R be used in series or parallel configurations for higher voltage or current handling?
No - Zener diodes exhibit manufacturing spread in VZ and rdif, causing uneven current sharing in parallel and unpredictable stacking in series. For higher voltage, use single higher-VZ Zeners (e.g., PZU84-C10); for higher current, add external series pass transistors or use dedicated shunt regulators.
PZU84-C4V7R 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):
- 4.7 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 2 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-C4V7R FAQ
1.How can I place an order for PZU84-C4V7R through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU84-C4V7R 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-C4V7R reliable?
The price and inventory of PZU84-C4V7R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU84-C4V7R is usually 5 days.
3.What payment methods are accepted for PZU84-C4V7R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU84-C4V7R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU84-C4V7R?
PZU84-C4V7R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU84-C4V7R 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-C4V7R?
For technical support, including PZU84-C4V7R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU84-C4V7R requirements.
6.How does Aetrix verify that PZU84-C4V7R is sourced from the original manufacturer or authorized distributors?
All PZU84-C4V7R 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-C4V7R meets industry standards.
7.What is the process for return or replacement of PZU84-C4V7R?
All PZU84-C4V7R units undergo pre-shipment inspection (PSI). If there is an issue with PZU84-C4V7R, 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-C4V7R part is unused and in its original packaging.
Return procedure for PZU84-C4V7R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU84-C4V7R Tags
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