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Nexperia USA Inc. PZU84-B16-QR
- Part No.:
- PZU84-B16-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PZU84-B16-QR.pdf
- Description:
- DIODE ZENER 16.18V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,692
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Product details
Overview
PZU84-B16-QR from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT23 package, rated for 16 V nominal breakdown voltage (VZ = 15.37 V to 17.09 V), 250 mW total power dissipation, and qualified to AEC-Q101 for automotive use. It delivers low dynamic impedance (80 Ω at IZ = 5 mA) and hard breakdown knee, enabling stable reference generation in power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the PZU84-B16-QR datasheet, PZU84-B16-QR pinout, PZU84-B16-QR application, or PZU84-B16-QR equivalent, key selection criteria include its 16 V regulation accuracy, AEC-Q101 qualification, SOT23 footprint compatibility, and low leakage current performance in automotive body control modules and infotainment power rails.
Technical Context
This Zener diode operates in reverse-biased breakdown mode with a sharp knee characteristic, optimized for precision voltage reference and clamping. Its differential resistance of 80 Ω at 5 mA ensures minimal output voltage variation under load changes, while the temperature coefficient of +10.4 mV/K at 25 °C supports predictable thermal drift behavior in regulated supplies.
The device features a three-terminal SOT23 package with Pin 1 (anode), Pin 2 (not connected), and Pin 3 (cathode), enabling unidirectional voltage regulation without parasitic conduction paths. Its non-repetitive peak reverse power rating of 40 W (tp = 100 μs) provides transient surge resilience in automotive load-dump scenarios.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ nominal | 16 V - precise regulation point for 12 V system rail supervision and ECU reference voltage generation |
| VZ tolerance | ±2 % - tight 15.37 V to 17.09 V range ensures consistent trip thresholds in safety-critical circuits |
| rdif | 80 Ω at IZ = 5 mA - low dynamic impedance maintains stable output under varying load currents |
| Ptot | 250 mW - sufficient for low-power biasing and sensing applications on FR4 PCBs with standard copper |
| Tj max | 150 °C - supports operation in under-hood automotive environments without derating |
| AEC-Q101 | Qualified - validated for automotive discrete semiconductor stress testing including HTGB, HTRB, and TCT |
| Cd | 97 pF at f = 1 MHz - low capacitance minimizes high-frequency noise coupling in signal conditioning paths |
Pinout & Package
Package: SOT23 plastic surface-mounted package; 3-terminal, 1.9 mm pitch, 2.9 mm × 1.3 mm × 1 mm body; RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Reverse-bias input terminal; connects to lower-potential node in shunt regulation configuration |
| 2 | Not Connected (n.c.) | Internally isolated; no electrical function - must remain unconnected in PCB layout |
| 3 | Cathode (K) | Reference output terminal; ties to regulated voltage node and provides return path for Zener current |
Key Features
| Feature | Design Value |
|---|---|
| Hard breakdown knee | Enables clean, repeatable voltage clamping without soft turn-on ambiguity in overvoltage detection |
| Very low leakage current | ≤0.05 μA at VR = 12 V - reduces standby power loss in always-on automotive modules |
| AEC-Q101 qualification | Validated for automotive-grade reliability across temperature cycling, humidity, and high-temperature operating life |
| Low differential resistance | 80 Ω at 5 mA - improves regulation accuracy under dynamic load steps in DC-DC feedback networks |
| SOT23 footprint | Standardized 2.9 mm × 1.3 mm outline compatible with high-volume automated assembly and reflow processes |
Applications
| Automotive Body Control Module (BCM) | Infotainment Power Rail Supervisor |
|---|---|
Use Scenario: Monitoring 12 V battery rail for undervoltage/overvoltage events during cold cranking or load dump. IC Role / Device Role / Timing Role: Shunt voltage reference for comparator input in supervisory IC or microcontroller ADC channel. Use Value: ±2 % VZ tolerance ensures accurate fault detection thresholds; AEC-Q101 qualification guarantees operation across −40 °C to +125 °C ambient. |
Use Scenario: Providing stable 16 V reference for LDO enable circuitry in head unit power management. IC Role / Device Role / Timing Role: Precision Zener clamp regulating enable voltage for secondary DC-DC converter. Use Value: 80 Ω rdif minimizes voltage droop during enable pulse transients; low 97 pF capacitance avoids signal integrity issues. |
| Engine Control Unit (ECU) Sensor Bias | ADAS Camera Module Voltage Clamp |
Use Scenario: Generating calibrated bias voltage for analog sensor interfaces (e.g., pressure, temperature) in engine bay. IC Role / Device Role / Timing Role: Stable reference source for sensor excitation or ADC reference divider network. Use Value: +10.4 mV/K temperature coefficient enables predictable compensation; 150 °C Tj max supports under-hood placement. |
Use Scenario: Clamping transient surges on 12 V camera power line caused by ESD or switching noise. IC Role / Device Role / Timing Role: Fast-response shunt protector absorbing short-duration spikes before they reach image sensor IC. Use Value: 40 W non-repetitive peak power rating handles 100 μs load-dump pulses; hard knee ensures immediate clamping onset. |
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 (15.2 V–16.8 V), higher rdif (100 Ω), not AEC-Q101 qualified | Limited to industrial/non-automotive use; less precise threshold setting | Select when cost sensitivity outweighs automotive qualification and regulation accuracy requirements |
| MMSZ5245B | ±5 % tolerance (15.2 V–16.8 V), 1000 mW Ptot, TO-236AB package (SOT-23 variant) | Higher power handling but larger footprint; no automotive qualification | Choose only if >250 mW dissipation is required and board space allows TO-236AB layout |
Compared with BZX84-C16 and MMSZ5245B, PZU84-B16-QR offers tighter 16 V regulation, lower dynamic impedance, and mandatory AEC-Q101 compliance-making it the sole choice for production automotive systems requiring traceable reliability and precise voltage supervision.
Availability
PZU84-B16-QR is available at Aetrix Electronics and suitable for automotive body control modules, infotainment power supervisors, and engine control unit sensor bias circuits requiring stable component supply with full AEC-Q101 traceability and long-term lifecycle support.
Supply support for PZU84-B16-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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.
PZU84-B16-QR belongs to the PZU84-Q series of AEC-Q101-qualified Zener diodes engineered specifically for automotive voltage regulation, reference, and transient suppression where precision, reliability, and space-constrained packaging are critical.
FAQ
What is the exact Zener voltage range for PZU84-B16-QR at 25 °C?
The PZU84-B16-QR has a guaranteed Zener voltage range of 15.37 V to 17.09 V at IZ = 5 mA and Tj = 25 °C, per Table 8 of the Rev. 4 datasheet. This ±2 % tolerance is measured under specified test conditions and applies across the full operating junction temperature range.
Is Pin 2 electrically functional or a dummy pad?
Pin 2 is explicitly designated "n.c." (not connected) in Table 2 of the datasheet and carries no internal connection. It must remain unconnected on the PCB - routing traces or soldering to this terminal will compromise device reliability and violate the qualified SOT23 footprint.
How does the temperature coefficient affect regulation stability in automotive environments?
With a typical temperature coefficient of +10.4 mV/K at 25 °C, the PZU84-B16-QR's VZ increases ~104 mV over a 10 K rise. This predictable positive drift is factored into design margins for under-hood applications, and the device remains within specification up to 150 °C junction temperature.
Can PZU84-B16-QR replace older PZU84-B16-Q parts in existing designs?
Yes - PZU84-B16-QR is a direct replacement for PZU84-B16-Q with identical electrical specifications, package, pinout, and AEC-Q101 qualification. The "-QR" suffix denotes enhanced traceability and updated manufacturing controls per Nexperia's 2024 quality revision, with no functional or mechanical differences.
PZU84-B16-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):
- 16.18 V
- Tolerance:
- ±2.04%
- 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
PZU84-B16-QR FAQ
1.How can I place an order for PZU84-B16-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU84-B16-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-B16-QR reliable?
The price and inventory of PZU84-B16-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-B16-QR is usually 5 days.
3.What payment methods are accepted for PZU84-B16-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU84-B16-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU84-B16-QR?
PZU84-B16-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU84-B16-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-B16-QR?
For technical support, including PZU84-B16-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU84-B16-QR requirements.
6.How does Aetrix verify that PZU84-B16-QR is sourced from the original manufacturer or authorized distributors?
All PZU84-B16-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-B16-QR meets industry standards.
7.What is the process for return or replacement of PZU84-B16-QR?
All PZU84-B16-QR units undergo pre-shipment inspection (PSI). If there is an issue with PZU84-B16-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-B16-QR part is unused and in its original packaging.
Return procedure for PZU84-B16-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU84-B16-QR Tags
-
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
-
MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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