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Nexperia USA Inc. PZU84-B16R
- Part No.:
- PZU84-B16R
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PZU84-B16R.pdf
- Description:
- DIODE ZENER 16V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,347
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Product details
Overview
PZU84-B16R from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT23 package, providing precise 16 V nominal regulation at 5 mA with 12 Ω typical differential resistance and −2.0 mV/K temperature coefficient. It delivers low leakage (≤0.05 μA at VR = 12.9 V), hard breakdown knee, and operates across −55 °C to +150 °C ambient for power rail stabilization in industrial sensor interfaces.
For engineers reviewing the PZU84-B16R datasheet, PZU84-B16R pinout, PZU84-B16R application, or PZU84-B16R equivalent, key selection criteria include Zener voltage tolerance, dynamic impedance at 5 mA, thermal resistance (Rth(j-a) = 500 K/W), junction temperature limit (150 °C), and SOT23 footprint compatibility with automated assembly.
Technical Context
This Zener diode operates in reverse-bias breakdown mode to clamp or regulate voltage with minimal deviation under varying load currents. Its design emphasizes stable reference performance at low test currents (IZ = 5 mA), supported by a hard breakdown knee and tightly controlled ±2 % VZ tolerance.
Thermal behavior is defined by Rth(j-a) = 500 K/W (free air) and Rth(j-sp) = 330 K/W (solder point), enabling reliable operation up to 150 °C junction temperature. The device exhibits negative temperature coefficient (−2.0 mV/K) optimized for compensation in precision analog circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 16 V nominal at IZ = 5 mA; actual range 15.37 V to 17.09 V per ±2 % tolerance - ensures tight regulation in feedback loops |
| Differential Resistance rdif | 80 Ω max at IZ = 5 mA - low impedance maintains stable voltage under small current variations |
| Temperature Coefficient SZ | −2.0 mV/K at IZ = 5 mA - predictable drift enables accurate thermal compensation in reference designs |
| Reverse Current IR | ≤0.05 μA at VR = 12.9 V - ultra-low leakage preserves accuracy in high-impedance bias networks |
| Total Power Dissipation Ptot | 250 mW at Tamb = 25 °C on FR4 PCB - defines maximum continuous DC power handling in standard layout |
| Non-repetitive Peak Power PZSM | 40 W at tp = 100 μs - supports transient overvoltage clamping without degradation |
| Forward Voltage VF | ≤0.9 V at IF = 10 mA - ensures low forward drop when used in dual-direction protection or OR-ing |
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 reflow and wave soldering per IPC-7351B standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connects to lower-potential node in reverse-bias regulation; must be routed with thermal relief for heat dissipation |
| 2 | Not Connected (n.c.) | Internally unconnected; no electrical function - must remain floating per datasheet to avoid parasitic coupling |
| 3 | Cathode (K) | Connects to higher-potential node; serves as primary heat path (Rth(j-sp) = 330 K/W to solder point) |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables direct use in precision 16 V reference circuits without trimming or calibration |
| Hard breakdown knee | Ensures sharp, repeatable turn-on at 16 V - critical for overvoltage protection and threshold detection |
| Ultra-low leakage (≤0.05 μA) | Maintains regulation accuracy in high-impedance divider networks and battery-powered systems |
| SOT23 footprint compatibility | Supports high-density PCB layouts and standard pick-and-place assembly with 0.6 mm solder land width |
| 150 °C junction temperature rating | Allows deployment in under-hood automotive modules and industrial motor control enclosures |
Applications
| Industrial Sensor Signal Conditioning | Microcontroller Voltage Reference |
|---|---|
Use Scenario: Stabilizing excitation voltage for 4–20 mA current-loop pressure sensors operating in factory-floor environments with wide ambient swings. IC Role / Device Role / Timing Role: Zener regulator providing fixed 16 V rail to op-amp driver stage, replacing bulkier three-terminal regulators. Use Value: Tight ±2 % tolerance and −2.0 mV/K TC minimize sensor output drift across −40 °C to +85 °C operating range. |
Use Scenario: Supplying clean, stable reference voltage to ADC input of an STM32H7-based data logger monitoring HVAC system parameters. IC Role / Device Role / Timing Role: Low-leakage (≤0.05 μA) shunt reference establishing 16 V reference node for external voltage divider scaling. Use Value: Hard breakdown knee prevents noise-induced false triggering during ESD events near measurement inputs. |
| DC-DC Converter Feedback Network | Overvoltage Protection Clamp |
Use Scenario: Setting regulated output voltage in isolated flyback converter for industrial PLC I/O module with 24 V input. IC Role / Device Role / Timing Role: Precision 16 V Zener in optocoupler feedback path, directly setting secondary-side regulation threshold. Use Value: 80 Ω max rdif ensures minimal load-induced error across 1–10 mA feedback current range. |
Use Scenario: Clamping transient surges on 12 V CAN bus power rail during load-dump events in vehicle ECUs. IC Role / Device Role / Timing Role: Fast-response shunt clamp absorbing 40 W non-repetitive peaks (tp = 100 μs) without failure. Use Value: 40 W PZSM rating and 150 °C Tj rating sustain reliability during repeated surge exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C16 | ±5 % tolerance, 100 Ω max rdif at 5 mA, −2.0 mV/K TC | Higher voltage variation and impedance reduce accuracy in precision references | Select when cost sensitivity outweighs regulation stability requirements |
| MMSZ4687 | ±5 % tolerance, 100 Ω max rdif, −2.5 mV/K TC, SOD-123 package | Larger SOD-123 footprint limits board density; higher TC increases thermal drift | Choose only if legacy SOD-123 layout reuse is mandatory and ±5 % tolerance is acceptable |
Compared with BZX84-C16 and MMSZ4687, PZU84-B16R offers tighter ±2 % tolerance, lower 80 Ω rdif, and identical −2.0 mV/K TC in compact SOT23 - making it optimal for space-constrained, high-accuracy regulation where leakage and thermal stability are critical.
Availability
PZU84-B16R is available at Aetrix Electronics and suitable for industrial sensor conditioning, microcontroller reference generation, and DC-DC feedback networks requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for PZU84-B16R 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 specifically for precision voltage reference and clamping in space-constrained, thermally demanding applications across industrial and consumer electronics.
FAQ
What is the maximum continuous reverse current the PZU84-B16R can handle without exceeding its 250 mW power limit?
At 16 V Zener voltage and 250 mW total power dissipation, the absolute maximum continuous reverse current is 15.6 mA (250 mW ÷ 16 V). However, derating is required above 25 °C ambient: at 85 °C, usable current drops to ~10.5 mA due to thermal resistance (Rth(j-a) = 500 K/W) limiting junction temperature to 150 °C.
Can PZU84-B16R be used in place of a 15 V Zener for improved noise immunity?
No - PZU84-B16R is specified at 16 V nominal (15.37–17.09 V range) and cannot substitute for a 15 V part without circuit redesign. Its lower leakage (≤0.05 μA vs. ~0.1 μA for 15 V variants) and tighter tolerance do not compensate for the 1 V offset, which would shift regulation thresholds and risk overvoltage in downstream circuitry.
How does the "n.c." pin (Pin 2) affect PCB layout and thermal performance?
Pin 2 is internally unconnected and must remain electrically floating - no trace should connect to it. Including copper pour or thermal relief under Pin 2 degrades thermal resistance from junction to ambient; the datasheet specifies Rth(j-a) = 500 K/W assumes no thermal coupling to Pin 2, so layout must isolate this pad from ground or power planes.
Is PZU84-B16R qualified for automotive applications per AEC-Q200?
No - the PZU84 series is not AEC-Q200 qualified. Nexperia explicitly states in Section 14 that "Unless this data sheet expressly states that this specific Nexperia product is automotive qualified, the product is not suitable for automotive use." For automotive use, engineers must select AEC-Q200-compliant alternatives such as the PZUxx-A series.
PZU84-B16R 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):
- 16 V
- Tolerance:
- ±2%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 12 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-B16R FAQ
1.How can I place an order for PZU84-B16R through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU84-B16R 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-B16R reliable?
The price and inventory of PZU84-B16R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU84-B16R is usually 5 days.
3.What payment methods are accepted for PZU84-B16R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU84-B16R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU84-B16R?
PZU84-B16R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU84-B16R 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-B16R?
For technical support, including PZU84-B16R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU84-B16R requirements.
6.How does Aetrix verify that PZU84-B16R is sourced from the original manufacturer or authorized distributors?
All PZU84-B16R 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-B16R meets industry standards.
7.What is the process for return or replacement of PZU84-B16R?
All PZU84-B16R units undergo pre-shipment inspection (PSI). If there is an issue with PZU84-B16R, 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-B16R part is unused and in its original packaging.
Return procedure for PZU84-B16R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU84-B16R Tags
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