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Nexperia USA Inc. PZU84-B3V6R
- Part No.:
- PZU84-B3V6R
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PZU84-B3V6R.pdf
- Description:
- DIODE ZENER 3.6V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,251
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Product details
Overview
PZU84-B3V6R from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT23 package, providing precise 3.6 V regulation at 5 mA with 90 Ω differential resistance and −3.5 mV/K temperature coefficient, used for low-power voltage reference and overvoltage protection in power supply feedback loops.
For engineers reviewing the PZU84-B3V6R datasheet, PZU84-B3V6R pinout, PZU84-B3V6R application, or PZU84-B3V6R equivalent, this page delivers verified Zener parameters, validated SOT23 terminal mapping, confirmed thermal and switching characteristics per AN90031, and direct alternative comparisons for precision biasing and clamping designs.
Technical Context
This Zener operates in reverse breakdown with hard knee characteristics optimized for stable reference generation at low currents (IZ = 0.5 mA to 5 mA), featuring very low leakage current (<5 μA at VR = 1.0 V) and minimal dynamic impedance drift across ambient temperatures (−55 °C to +150 °C).
Its design targets high-accuracy analog circuits requiring tight voltage stability: the −3.5 mV/K temperature coefficient and 90 Ω typical rdif at 5 mA enable predictable regulation under varying load and thermal conditions without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 3.40 V to 3.80 V at IZ = 5 mA - defines nominal regulation point with ±2 % tolerance for precision biasing |
| Differential Resistance rdif | 90 Ω typical at IZ = 5 mA - ensures minimal output voltage shift under small load variations |
| Temperature Coefficient SZ | −3.5 mV/K at IZ = 5 mA - enables predictable VZ drift compensation in temperature-sensitive references |
| Reverse Current IR | ≤5 μA at VR = 1.0 V - guarantees low quiescent power loss in always-on clamp applications |
| Total Power Dissipation Ptot | 250 mW at Tamb = 25 °C on FR4 PCB - sets maximum continuous DC power handling in standard layout |
| Non-repetitive Peak Power PZSM | 40 W at tp = 100 μs - supports transient surge suppression in ESD-critical signal lines |
| Junction Temperature Tj | 150 °C maximum - determines safe operating margin for high-ambient industrial environments |
Pinout & Package
SOT23 plastic surface-mounted package: 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch, single-sided 70 μm copper FR4 mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-biased terminal; connects to lower-potential node in reverse-bias regulation configuration |
| 2 | Not Connected (n.c.) | Internally unconnected; must remain floating-no PCB trace or solder mask required |
| 3 | Cathode (K) | Reverse-bias input terminal; ties to regulated voltage node and provides thermal path to solder point (Rth(j-sp) = 330 K/W) |
Key Features
| Feature | Design Value |
|---|---|
| Hard breakdown knee | Enables sharp, predictable turn-on at 3.6 V without soft saturation-critical for accurate threshold detection |
| Very low leakage current | ≤5 μA at VR = 1.0 V ensures minimal error current in high-impedance reference dividers |
| Optimized low-current regulation | Stable VZ maintained down to IZ = 0.5 mA-supports ultra-low-power sensor biasing |
| Thermal resistance control | Rth(j-sp) = 330 K/W to cathode solder point allows reliable derating up to 125 °C ambient |
Applications
| Power Supply Feedback Reference | ESD Protection Clamp |
|---|---|
Use Scenario: Stabilizing output voltage in isolated flyback or buck converter feedback networks using optocoupler-coupled TL431 alternatives. IC Role / Device Role / Timing Role: Zener diode acting as primary voltage reference for error amplifier input, setting regulation setpoint. Use Value: ±2 % VZ tolerance and −3.5 mV/K TC ensure <±1.5 % total output variation over −40 °C to +85 °C without trimming. |
Use Scenario: Protecting I²C bus lines (SDA/SCL) against fast transients in industrial PLC modules. IC Role / Device Role / Timing Role: Low-capacitance (390 pF) shunt clamp limiting line voltage to 3.6 V during ESD events. Use Value: 40 W non-repetitive peak power rating absorbs 8 kV HBM surges while maintaining sub-1 ns response due to hard knee behavior. |
| Low-Power Sensor Biasing | ADC Reference Stabilization |
Use Scenario: Providing excitation voltage to resistive temperature detectors (RTDs) in battery-powered environmental monitors. IC Role / Device Role / Timing Role: Precision Zener supplying stable 3.6 V bias to RTD bridge, minimizing self-heating error. Use Value: 90 Ω rdif and ≤5 μA IR prevent loading-induced offset in microamp-level bridge currents. |
Use Scenario: Decoupling reference input of 12-bit SAR ADCs in data acquisition systems where internal VREF lacks stability. IC Role / Device Role / Timing Role: External shunt reference establishing fixed 3.6 V reference for ADC conversion accuracy. Use Value: −3.5 mV/K TC aligns closely with typical ADC offset drift, reducing system-level calibration burden. |
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-C3V6 | ±5 % tolerance, 110 Ω rdif at 5 mA, −3.5 mV/K TC, same SOT23 package | Higher VZ tolerance and impedance reduce accuracy in precision feedback loops but improve cost-effectiveness in non-critical clamping | Select when ±5 % regulation is acceptable and BOM cost sensitivity outweighs reference stability requirements |
| MMSZ4685T1G | ±5 % tolerance, 100 Ω rdif at 5 mA, −2.5 mV/K TC, SOD-123 package (larger footprint) | Larger thermal resistance (Rth(j-a) ≈ 600 K/W) limits power handling; different package requires layout change | Choose only if existing SOD-123 footprint exists and thermal derating to 150 mW is acceptable |
Compared with PZU84-B3V6R, BZX84-C3V6 trades regulation accuracy for cost in non-critical roles, while MMSZ4685T1G introduces package incompatibility and higher thermal resistance-neither matches the combination of ±2 % tolerance, 90 Ω rdif, and SOT23 size for high-density precision designs.
Availability
PZU84-B3V6R is available at Aetrix Electronics and suitable for power supply feedback reference, ESD protection clamp, and low-power sensor biasing requiring stable component supply with guaranteed long-term continuity.
Supply support for PZU84-B3V6R 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 logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.
The PZU84 series belongs to Nexperia's general-purpose Zener regulator product line, engineered specifically for stable voltage reference and clamping in space-constrained SMT applications demanding tight tolerance and low leakage.
FAQ
What is the maximum continuous forward current for PZU84-B3V6R?
The absolute maximum forward current is 200 mA per IEC 60134 limiting values. However, forward conduction is not its intended operating mode; it is designed for reverse-bias Zener regulation. Sustained forward current above 10 mA risks thermal overstress due to VF ≈ 0.9 V and limited 250 mW dissipation capability.
Can PZU84-B3V6R replace a 3.3 V Zener in an existing design?
No-PZU84-B3V6R is specified for 3.6 V nominal regulation (3.40–3.80 V). Substituting it for a 3.3 V Zener shifts the regulation point by +0.3 V, potentially causing overvoltage in feedback loops or exceeding downstream IC absolute maximum ratings. Use PZU84-B3V3R for 3.3 V equivalents.
How does the "n.c." pin affect PCB layout?
Pin 2 is internally not connected and must remain unconnected on the PCB-no trace, pad, or solder mask opening is required. Routing traces to or near this pin may induce parasitic capacitance or contamination risk; maintain ≥0.2 mm clearance per Nexperia's SOT23 reflow footprint guidelines.
Is PZU84-B3V6R suitable for automotive applications?
No-this device is not AEC-Q200 qualified. The datasheet explicitly states non-automotive qualification, and no automotive stress testing or extended temperature validation (e.g., −40 °C to +125 °C operation with lifetime reliability data) is provided. Use Nexperia's automotive-grade PZUx series variants for such applications.
PZU84-B3V6R 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):
- 3.6 V
- Tolerance:
- ±2%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 5 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-B3V6R FAQ
1.How can I place an order for PZU84-B3V6R through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU84-B3V6R 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-B3V6R reliable?
The price and inventory of PZU84-B3V6R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU84-B3V6R is usually 5 days.
3.What payment methods are accepted for PZU84-B3V6R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU84-B3V6R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU84-B3V6R?
PZU84-B3V6R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU84-B3V6R 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-B3V6R?
For technical support, including PZU84-B3V6R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU84-B3V6R requirements.
6.How does Aetrix verify that PZU84-B3V6R is sourced from the original manufacturer or authorized distributors?
All PZU84-B3V6R 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-B3V6R meets industry standards.
7.What is the process for return or replacement of PZU84-B3V6R?
All PZU84-B3V6R units undergo pre-shipment inspection (PSI). If there is an issue with PZU84-B3V6R, 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-B3V6R part is unused and in its original packaging.
Return procedure for PZU84-B3V6R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU84-B3V6R Tags
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MM5Z5V1ST1G
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