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Nexperia USA Inc. PZU3.3BA,115
- Part No.:
- PZU3.3BA,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PZU3.3BA,115.pdf
- Description:
- DIODE ZENER 3.3V 320MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:8,132
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Product details
Overview
PZU3.3BA,115 from Nexperia is a general-purpose Zener voltage regulator diode in SOD323 (SC-76) package, providing precise 3.3 V nominal regulation at 5 mA with ±5 % tolerance, 95 Ω max differential resistance, and 5 µA max reverse current at 0.5 mA test condition-used for low-power voltage reference and overvoltage protection in power supply feedback loops.
For engineers reviewing the PZU3.3BA,115 datasheet, PZU3.3BA,115 pinout, PZU3.3BA,115 application, or PZU3.3BA,115 equivalent, key selection criteria include Zener voltage accuracy, dynamic impedance at low bias current, thermal resistance to ambient (390 K/W), cathode/anode polarity marking, and compatibility with reflow-soldered SMD layouts on FR4 PCBs.
Technical Context
This Zener diode operates in reverse breakdown mode with a hard knee characteristic, optimized for stable regulation under low-current conditions (IZ = 0.5–5 mA). Its temperature coefficient is –2.4 mV/K at 25 °C, minimizing drift across operating temperature ranges.
The device supports non-repetitive surge handling up to 40 W for 100 µs pulses and delivers total power dissipation of 320 mW at Tamb ≤ 25 °C on standard FR4 PCB layout-enabling use in compact, thermally constrained consumer and industrial control circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.3 V nominal at IZ = 5 mA; ±5 % tolerance ensures predictable clamping in feedback networks |
| Differential Resistance (rdif) | ≤95 Ω at IZ = 5 mA; maintains tight regulation under varying load currents |
| Reverse Current (IR) | ≤5 µA at VR = 1 V; enables low-quiescent-power standby operation |
| Total Power Dissipation (Ptot) | 320 mW at Tamb ≤ 25 °C on FR4 PCB; defines continuous DC power handling limit |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 µs square wave; supports transient overvoltage suppression |
| Junction Temperature (Tj) | 150 °C maximum; sets upper thermal boundary for reliability in enclosed environments |
| Package | SOD323 (SC-76); 1.7 mm × 1.25 mm × 0.95 mm footprint compatible with high-density SMT assembly |
Pinout & Package
SOD323 (SC-76) plastic surface-mount package with 2 leads, 1.3 mm pitch, and cathode marked by a bar on the body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; marking bar identifies this terminal for correct PCB orientation |
| 2 | Anode | Connected to ground or lower-potential rail; completes reverse-bias path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low dynamic impedance at low current | 95 Ω max at 5 mA enables stable reference in low-power feedback paths |
| Hard breakdown knee | Sharp turn-on characteristic improves regulation accuracy near nominal VZ |
| Small outline package | SOD323 footprint saves board space in portable and space-constrained designs |
| Low leakage current | 5 µA max at 1 V reverse bias reduces standby power loss in battery-powered systems |
| Thermal robustness | 150 °C max junction temperature supports operation in industrial ambient environments |
Applications
| Power Supply Feedback Reference | Overvoltage Clamp Protection |
|---|---|
|
Use Scenario: Stabilizing output voltage in isolated flyback or buck converter feedback loop using optocoupler-coupled TL431 alternative. IC Role / Device Role / Timing Role: Zener diode provides fixed 3.3 V reference to bias optocoupler LED, enabling closed-loop regulation without dedicated voltage reference IC. Use Value: Eliminates need for precision shunt regulator in cost-sensitive AC/DC adapters while maintaining ±5 % output accuracy. |
Use Scenario: Protecting microcontroller I/O pins from ESD-induced voltage spikes on sensor interface lines. IC Role / Device Role / Timing Role: Acts as fast-acting clamp between signal line and ground, diverting transients exceeding 3.3 V before reaching sensitive input structures. Use Value: Limits peak voltage to 3.3 V + forward drop of series resistor, preventing latch-up in 3.3 V logic interfaces. |
| Low-Power Voltage Monitor | ADC Reference Stabilization |
|
Use Scenario: Detecting brown-out condition in battery-powered IoT node by comparing battery voltage against 3.3 V threshold via comparator input. IC Role / Device Role / Timing Role: Provides stable 3.3 V reference to one comparator input; battery voltage feeds the other, enabling accurate undervoltage detection. Use Value: Delivers consistent trip point across temperature due to –2.4 mV/K coefficient, reducing calibration overhead in firmware. |
Use Scenario: Improving measurement accuracy of 12-bit SAR ADC in industrial sensor module powered from unregulated 5 V rail. IC Role / Device Role / Timing Role: Supplies clean, low-noise 3.3 V reference to ADC VREF pin, replacing noisy LDO output or resistive divider. Use Value: Reduces reference noise contribution to <1 LSB error by lowering dynamic impedance versus passive dividers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B3V3,115 | Same SOD323 package, ±2 % tolerance, 90 Ω rdif, but higher 10 µA IR at 1 V | Better voltage accuracy suits precision references; higher leakage limits ultra-low-power sleep modes | Select when tighter VZ tolerance is required and leakage budget allows ≥10 µA |
| MMSZ5226B-7-F | SOD123 package (larger), ±5 % tolerance, 17 Ω rdif, 100 nA IR at 1 V | Lower dynamic impedance improves regulation under variable loads; smaller leakage benefits battery life | Choose for higher current regulation stability or extended battery runtime where board space permits SOD123 |
Compared with PZU3.3BA,115, BZX384-B3V3,115 offers tighter voltage tolerance at the cost of higher leakage, while MMSZ5226B-7-F delivers lower impedance and leakage in a larger package-making PZU3.3BA,115 optimal for cost-sensitive, space-constrained 3.3 V reference applications requiring balanced performance.
Availability
PZU3.3BA,115 is available at Aetrix Electronics and suitable for power supply feedback reference, overvoltage clamp protection, and low-power voltage monitor applications requiring stable component supply and consistent SOD323 packaging.
Supply support for PZU3.3BA,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
Nexperia is a leading semiconductor manufacturer specializing in high-volume, high-reliability discrete and logic devices, with global manufacturing and logistics infrastructure.
The PZUxBA series belongs to Nexperia's general-purpose Zener diode product line, designed specifically for cost-effective, space-efficient voltage regulation and protection in consumer, industrial, and computing power systems.
FAQ
What is the maximum continuous reverse current the PZU3.3BA,115 can sustain?
The PZU3.3BA,115 has no specified maximum continuous reverse current rating; its safe operating limit is defined by power dissipation. At 3.3 V Zener voltage and 320 mW total power, the maximum continuous Zener current is approximately 97 mA (320 mW ÷ 3.3 V), assuming full power is allocated to reverse conduction.
How does the –2.4 mV/K temperature coefficient affect regulation accuracy over temperature?
A –2.4 mV/K coefficient means the Zener voltage decreases by 2.4 mV per Kelvin rise in junction temperature. Over a 100 °C range (25 °C to 125 °C), VZ shifts by –240 mV, resulting in ~7.3 % deviation from 3.3 V nominal-requiring system-level compensation if regulation stability beyond ±5 % is needed.
Can PZU3.3BA,115 be used in place of a 3.3 V LDO for powering logic circuits?
No-PZU3.3BA,115 is a two-terminal shunt regulator and cannot source current like an LDO. It regulates by sinking excess current to maintain voltage; it lacks current-limiting, dropout control, or load regulation capability required for powering digital ICs directly.
Is the SOD323 package suitable for automated optical inspection (AOI) after reflow?
Yes-the SOD323 package features clear cathode marking (bar), consistent lead geometry, and standardized 1.3 mm pitch, making it fully compatible with standard AOI systems configured for SC-76 footprints and polarity verification.
PZU3.3BA,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3.3 V
- Tolerance:
- ±5%
- Power - Max:
- 320 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
PZU3.3BA,115 FAQ
1.How can I place an order for PZU3.3BA,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU3.3BA,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 PZU3.3BA,115 reliable?
The price and inventory of PZU3.3BA,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU3.3BA,115 is usually 5 days.
3.What payment methods are accepted for PZU3.3BA,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU3.3BA,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU3.3BA,115?
PZU3.3BA,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU3.3BA,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 PZU3.3BA,115?
For technical support, including PZU3.3BA,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU3.3BA,115 requirements.
6.How does Aetrix verify that PZU3.3BA,115 is sourced from the original manufacturer or authorized distributors?
All PZU3.3BA,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 PZU3.3BA,115 meets industry standards.
7.What is the process for return or replacement of PZU3.3BA,115?
All PZU3.3BA,115 units undergo pre-shipment inspection (PSI). If there is an issue with PZU3.3BA,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 PZU3.3BA,115 part is unused and in its original packaging.
Return procedure for PZU3.3BA,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU3.3BA,115 Tags
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