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Nexperia USA Inc. PZU84-B9V1R
- Part No.:
- PZU84-B9V1R
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PZU84-B9V1R.pdf
- Description:
- DIODE ZENER 9.1V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,249
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Product details
Overview
PZU84-B9V1R from Nexperia is a general-purpose Zener voltage regulator diode in SOT23 package, providing precise 9.1 V nominal regulation at 5 mA with ±2 % tolerance, low dynamic impedance (60 Ω), and hard breakdown knee for stable reference applications in power supply feedback loops and voltage clamping circuits.
For engineers reviewing the PZU84-B9V1R datasheet, PZU84-B9V1R pinout, PZU84-B9V1R application, or PZU84-B9V1R equivalent, key selection criteria include Zener voltage accuracy, low leakage current (<0.5 μA at VR = 6 V), thermal resistance (Rth(j-a) = 500 K/W), and compatibility with standard FR4 PCB layouts using SOT23 footprint.
Technical Context
This Zener diode operates in reverse-bias breakdown mode to maintain a stable reference voltage under varying load and temperature conditions. Its design emphasizes low differential resistance (60 Ω at IZ = 5 mA) and tight voltage tolerance (±2 %), enabling high-precision regulation in low-power analog and digital supply monitoring circuits.
The device features a hard breakdown knee and very low leakage current, optimized for use in voltage references and overvoltage protection where minimal deviation from nominal VZ and predictable turn-on behavior are critical. It is not intended for high-current regulation but excels in signal-level clamping and biasing roles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 9.1 V nominal at IZ = 5 mA; ±2 % tolerance ensures stable reference within ±0.182 V across production lots |
| Differential Resistance rdif | 60 Ω max at IZ = 5 mA; enables low output impedance for effective voltage stabilization under small load variations |
| Reverse Leakage IR | <0.5 μA at VR = 6 V; minimizes quiescent current loss in battery-powered or ultra-low-power circuits |
| Forward Voltage VF | ≤0.9 V at IF = 10 mA; supports reliable anode-cathode conduction during forward-bias test or dual-role circuit use |
| Total Power Dissipation Ptot | 250 mW at Tamb = 25 °C on FR4 PCB; defines maximum continuous DC power handling in standard mounting |
| Junction Temperature Tj | −55 °C to +150 °C operating range; allows deployment in industrial environments with wide ambient swings |
| Thermal Resistance Rth(j-a) | 500 K/W in free air; determines junction-to-ambient temperature rise per watt, critical for thermal derating |
Pinout & Package
Package: SOT23 plastic surface-mounted package; 3-terminal, 1.9 mm pitch, 2.9 mm × 1.3 mm × 1.0 mm body; compatible with standard reflow and wave soldering footprints per Fig. 10 and Fig. 11.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | Anode connection | Forward-bias terminal; connects to lower-potential node when used as clamp or regulator |
| 2 (n.c.) | Not connected | Internally unconnected; must remain floating-no PCB trace or pad required |
| 3 (Cathode) | Cathode connection | Reverse-bias terminal; connects to higher-potential node and serves as voltage reference output point |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables precision voltage referencing without post-production trimming in 3.3 V/5 V/9 V supply monitor circuits |
| Hard breakdown knee | Ensures sharp, repeatable turn-on behavior for reliable overvoltage clamping in ESD-sensitive interfaces |
| Very low leakage current | <0.5 μA at 6 V reverse bias preserves battery life in always-on sensor nodes and portable instrumentation |
| Low differential impedance (60 Ω) | Maintains <±10 mV regulation shift across ±1 mA load variation, suitable for ADC reference buffering |
| SOT23 footprint compatibility | Supports automated placement and reflow on high-density PCBs without requiring custom land patterns |
Applications
| Power Supply Feedback Loop | Voltage Clamping Interface |
|---|---|
Use Scenario: Regulating output of isolated flyback or buck converter via optocoupler feedback network. IC Role / Device Role / Timing Role: Zener diode provides stable 9.1 V reference to TL431 cathode, setting precise output voltage threshold. Use Value: Tight ±2 % VZ tolerance directly translates to ≤±0.2 % output voltage error before compensation loop adjustment. |
Use Scenario: Protecting microcontroller GPIO pins from transient overvoltage on industrial I/O lines. IC Role / Device Role / Timing Role: Acts as bidirectional clamp between signal line and 9.1 V rail, limiting excursion to safe levels during ESD events. Use Value: Hard breakdown knee ensures clamping activates predictably at 9.1 V, avoiding false triggering below threshold. |
| Reference Voltage Source | Low-Power Bias Generator |
Use Scenario: Providing stable reference for analog front-end comparators in battery-operated environmental sensors. IC Role / Device Role / Timing Role: Supplies 9.1 V reference to comparator input, enabling accurate threshold detection independent of supply drift. Use Value: Leakage current <0.5 μA prevents measurable loading on high-impedance sensor outputs or RC timing networks. |
Use Scenario: Generating bias voltage for JFET amplifier stages in audio preamplifier circuits. IC Role / Device Role / Timing Role: Delivers regulated 9.1 V gate bias to depletion-mode JFET, stabilizing operating point against temperature shifts. Use Value: Low dynamic impedance (60 Ω) suppresses noise coupling into sensitive analog signal paths. |
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-C9V1 | Same 9.1 V nominal, ±5 % tolerance, higher rdif (100 Ω), higher IR (≤10 μA at 6 V) | Less precise regulation; acceptable where cost sensitivity outweighs accuracy requirements | Select for cost-driven consumer designs where ±5 % VZ and relaxed stability are acceptable |
| MMSZ5240B | 9.1 V nominal, ±5 % tolerance, SOD-123 package, Ptot = 500 mW, rdif = 100 Ω | Larger footprint and higher power rating; less suitable for space-constrained SOT23 layouts | Choose only if board layout permits SOD-123 and higher dissipation (>250 mW) is needed |
Compared with PZU84-B9V1R, BZX84-C9V1 trades voltage accuracy and leakage performance for lower unit cost, while MMSZ5240B offers higher power handling at the expense of PCB area and thermal resistance-neither matches the combination of ±2 % tolerance, 60 Ω rdif, and SOT23 compactness in this part.
Availability
PZU84-B9V1R is available at Aetrix Electronics and suitable for power supply feedback loops, voltage clamping interfaces, reference voltage sources, and low-power bias generators requiring stable component supply with guaranteed long-term continuity.
Supply support for PZU84-B9V1R 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 delivering high-performance logic, discrete, and MOSFET solutions with focus on efficiency, reliability, and miniaturization for industrial, automotive, and consumer markets.
The PZU84 series belongs to Nexperia's general-purpose Zener diode product line, engineered specifically for precision voltage regulation and clamping in space-constrained, low-power applications demanding tight tolerance and low leakage.
FAQ
What is the Zener voltage tolerance and test condition for PZU84-B9V1R?
The PZU84-B9V1R has a nominal Zener voltage of 9.1 V with ±2 % tolerance, measured at IZ = 5 mA and Tj = 25 °C. This tolerance is guaranteed across the full operating temperature range (−55 °C to +150 °C) and reflects manufacturing consistency for precision reference use.
Can PZU84-B9V1R be used in place of a 9.1 V Zener with ±5 % tolerance?
Yes, it can replace ±5 % Zeners like BZX84-C9V1 in most applications, offering improved accuracy and lower dynamic impedance-but requires verification that system-level regulation margin accommodates tighter VZ distribution and that layout remains compatible with SOT23 footprint.
What is the maximum continuous reverse power dissipation for PZU84-B9V1R?
The maximum continuous reverse power dissipation is 250 mW at Tamb = 25 °C when mounted on a standard FR4 PCB with single-sided 70 μm copper and tin-plated finish. Derating is required above 25 °C per the Rth(j-a) = 500 K/W thermal resistance specification.
Is Pin 2 internally connected, and how should it be handled on the PCB?
No, Pin 2 is explicitly marked "n.c." (not connected) in the datasheet and has no internal bond wire or die connection. It must remain unconnected on the PCB-no trace, pad, or solder mask opening is required, and routing near it must avoid unintended coupling.
PZU84-B9V1R 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):
- 9.1 V
- Tolerance:
- ±2%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 500 mV
- 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-B9V1R FAQ
1.How can I place an order for PZU84-B9V1R through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU84-B9V1R 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-B9V1R reliable?
The price and inventory of PZU84-B9V1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU84-B9V1R is usually 5 days.
3.What payment methods are accepted for PZU84-B9V1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU84-B9V1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU84-B9V1R?
PZU84-B9V1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU84-B9V1R 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-B9V1R?
For technical support, including PZU84-B9V1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU84-B9V1R requirements.
6.How does Aetrix verify that PZU84-B9V1R is sourced from the original manufacturer or authorized distributors?
All PZU84-B9V1R 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-B9V1R meets industry standards.
7.What is the process for return or replacement of PZU84-B9V1R?
All PZU84-B9V1R units undergo pre-shipment inspection (PSI). If there is an issue with PZU84-B9V1R, 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-B9V1R part is unused and in its original packaging.
Return procedure for PZU84-B9V1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU84-B9V1R Tags
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