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NXP Semiconductors PZU9.1B3,115
- Part No.:
- PZU9.1B3,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
PZU9.1B3,115.pdf
- Description:
- DIODE ZENER 9.1V 310MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:17,047
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Product details
Overview
PZU9.1B3,115 from NXP Semiconductors is a precision Zener diode optimized for voltage regulation and reference applications in space-constrained SMD designs. It delivers a nominal Zener voltage of 9.1 V at 5 mA with ±2 % tolerance (B3 grade), 60 Ω maximum differential resistance, and 120 nA reverse current at 7.3 V, housed in the ultra-compact SOD323F (SC-90) package.
For engineers reviewing the PZU9.1B3,115 datasheet, PZU9.1B3,115 pinout, PZU9.1B3,115 application, or PZU9.1B3,115 equivalent, this device serves as a stable, low-capacitance (6 pF) voltage reference in power supply feedback loops, overvoltage protection circuits, and analog sensor biasing where tight voltage accuracy and thermal stability (5.5 mV/K tempco) are required.
Technical Context
The PZU9.1B3,115 operates as a single-terminal voltage reference diode with cathode-anode polarity defined by a marking bar on the SOD323F package. Its Zener breakdown mechanism provides stable reverse conduction above 9.1 V, with temperature coefficient tightly controlled at 5.5 mV/K (typical) at IZ = 5 mA.
Thermal performance is characterized by Rth(j-a) = 230 K/W when mounted on FR4 PCB with standard footprint, enabling reliable operation up to 150 °C junction temperature. Non-repetitive peak reverse current capability is rated at 120 A under 100 μs surge conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.56 V to 9.55 V at IZ = 5 mA - defines precise regulation threshold for feedback or clamping |
| Tolerance Grade | B3 (±2 %) - enables tighter system-level voltage accuracy vs. B/B1/B2 variants |
| Differential Resistance (rdif) | ≤60 Ω - ensures minimal output voltage shift under load current variation |
| Reverse Current (IR) | ≤10 nA at VR = 7.3 V - supports ultra-low leakage in high-impedance reference nodes |
| Temperature Coefficient (SZ) | 5.5 mV/K (typical) at IZ = 5 mA - quantifies voltage drift per degree Celsius in thermal environments |
| Capacitance (Cd) | 6 pF at f = 1 MHz, VR = 0 V - minimizes high-frequency noise coupling in sensitive analog paths |
| Total Power Dissipation (Ptot) | 310 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 layout |
Pinout & Package
SOD323F (SC-90) plastic surface-mounted package: 2-pin, ultra-small outline (2.3 mm × 1.35 mm × 0.95 mm), flat lead, cathode marked by bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output or reference node; marking bar identifies this terminal |
| 2 | Anode | Connected to ground or lower-potential rail; reverse-biased during Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance (B3 grade) | Enables tighter closed-loop regulation without post-production trimming |
| 60 Ω max differential resistance | Maintains <±10 mV output shift across 1–10 mA load current changes |
| 6 pF capacitance at 1 MHz | Preserves signal integrity in high-speed comparator or ADC reference paths |
| 150 °C maximum junction temperature | Supports operation in automotive under-hood or industrial control environments |
| FR4-compatible thermal resistance (230 K/W) | Allows full 310 mW dissipation without heatsinking on standard PCB layout |
Applications
| Power Supply Feedback | Overvoltage Clamp |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or buck converter feedback networks using optocoupler-coupled error amplifiers. IC Role / Device Role / Timing Role: Zener reference element setting precise voltage threshold for TL431 or similar shunt regulator ICs. Use Value: ±2 % tolerance ensures <±1.5 % overall output regulation accuracy without calibration. |
Use Scenario: Protecting microcontroller I/O pins or analog front-end inputs from transient overvoltage events. IC Role / Device Role / Timing Role: Fast-acting shunt clamp limiting voltage to 9.1 V before damage thresholds are exceeded. Use Value: 120 A non-repetitive surge rating absorbs ESD or inductive kick energy without failure. |
| Sensor Bias Reference | ADC Voltage Reference |
Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) or bridge-based pressure sensors. IC Role / Device Role / Timing Role: Low-drift, low-noise DC reference source replacing higher-cost bandgap ICs in cost-sensitive systems. Use Value: 5.5 mV/K tempco and 6 pF capacitance minimize measurement drift and noise coupling into sensor signal chain. |
Use Scenario: Serving as external reference for 12-bit SAR ADCs in data acquisition modules requiring <0.5 % full-scale error. IC Role / Device Role / Timing Role: Precision voltage reference establishing ADC's full-scale input range. Use Value: ±2 % tolerance and 60 Ω rdif ensure reference stability under varying ADC reference current draw. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C9V1,115 | Same SOD323F package, ±5 % tolerance (C-grade), 90 Ω rdif, 100 nA IR at 7.3 V | Lower accuracy and higher dynamic impedance reduce regulation precision in feedback loops | Select when ±5 % tolerance suffices and cost is primary constraint; not suitable for <0.5 % system accuracy targets |
| MMSZ5240BT1G | SOD-123 package (larger footprint), ±5 % tolerance, 17 Ω rdif, 100 nA IR at 7.6 V | Higher power rating (500 mW) but incompatible pinout and board area; better for higher-current clamping | Choose only if PCB redesign accommodates larger SOD-123; superior rdif benefits high-current references but sacrifices miniaturization |
Compared with BZX84-C9V1,115 and MMSZ5240BT1G, the PZU9.1B3,115 uniquely combines ±2 % tolerance, 60 Ω rdif, and SOD323F miniaturization-enabling high-accuracy regulation in space-limited layouts where tighter voltage control and thermal stability are critical.
Availability
PZU9.1B3,115 is available at Aetrix Electronics and suitable for power supply feedback networks, overvoltage protection circuits, sensor biasing, and ADC reference designs requiring stable component supply and consistent parametric performance across production batches.
Supply support for PZU9.1B3,115 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and consumer applications.
The PZUxB series was developed to deliver high-precision, miniature Zener diodes for voltage reference and regulation in compact, thermally demanding SMD systems-emphasizing tight tolerance, low dynamic impedance, and robust surge capability.
FAQ
What is the Zener voltage tolerance of PZU9.1B3,115?
The PZU9.1B3,115 has a B3 tolerance grade, meaning its Zener voltage is guaranteed between 8.56 V and 9.55 V at 5 mA test current-corresponding to ±2 % deviation from the nominal 9.1 V value. This tighter tolerance supports higher system-level accuracy than standard ±5 % Zeners like the B-grade PZU9.1B,115.
What is the maximum power dissipation for PZU9.1B3,115 under standard PCB conditions?
The PZU9.1B3,115 has a total power dissipation rating of 310 mW when mounted on an FR4 PCB with single-sided copper, tin-plated, and standard footprint-per IEC 60134 limiting values. Derating begins above 25 °C ambient, reaching zero dissipation at 150 °C junction temperature.
How does the temperature coefficient of PZU9.1B3,115 affect its performance in varying thermal environments?
The PZU9.1B3,115 exhibits a typical temperature coefficient of +5.5 mV/K at IZ = 5 mA, meaning its Zener voltage increases by approximately 5.5 mV per degree Celsius rise in junction temperature. This positive tempco must be accounted for in high-precision reference designs operating across −40 °C to +125 °C ambient ranges.
Can PZU9.1B3,115 be used in high-frequency applications?
Yes-the PZU9.1B3,115 has a diode capacitance of only 6 pF at 1 MHz and VR = 0 V, making it suitable for high-frequency voltage clamping and noise-sensitive reference applications. Its low capacitance minimizes signal distortion and loading effects in RF detector or fast comparator circuits.
What is the reverse leakage current specification for PZU9.1B3,115 at its rated working voltage?
At VR = 7.3 V (approximately 80 % of nominal VZ), the PZU9.1B3,115 guarantees a maximum reverse current of 10 nA. This ultra-low leakage supports high-impedance bias networks and battery-powered systems where standby current must remain below 100 nA.
PZU9.1B3,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- -
- Tolerance:
- -
- Power - Max:
- -
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
PZU9.1B3,115 FAQ
1.How can I place an order for PZU9.1B3,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU9.1B3,115 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 PZU9.1B3,115 reliable?
The price and inventory of PZU9.1B3,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU9.1B3,115 is usually 5 days.
3.What payment methods are accepted for PZU9.1B3,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU9.1B3,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU9.1B3,115?
PZU9.1B3,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU9.1B3,115 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 PZU9.1B3,115?
For technical support, including PZU9.1B3,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU9.1B3,115 requirements.
6.How does Aetrix verify that PZU9.1B3,115 is sourced from the original manufacturer or authorized distributors?
All PZU9.1B3,115 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 PZU9.1B3,115 meets industry standards.
7.What is the process for return or replacement of PZU9.1B3,115?
All PZU9.1B3,115 units undergo pre-shipment inspection (PSI). If there is an issue with PZU9.1B3,115, 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 PZU9.1B3,115 part is unused and in its original packaging.
Return procedure for PZU9.1B3,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU9.1B3,115 Tags
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
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