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Nexperia USA Inc. PZU3.3B1A,115
- Part No.:
- PZU3.3B1A,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PZU3.3B1A,115.pdf
- Description:
- DIODE ZENER 3.3V 320MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:1,835
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Product details
Overview
PZU3.3B1A,115 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 3.3 V nominal working voltage at 5 mA, with 95 Ω maximum differential resistance, 5 µA reverse current at 0.5 mA test condition, and −2.4 mV/K temperature coefficient. It delivers stable reference voltage in low-power analog circuits and power supply feedback paths.
For engineers reviewing the PZU3.3B1A,115 datasheet, PZU3.3B1A,115 pinout, PZU3.3B1A,115 application, or PZU3.3B1A,115 equivalent, this device is selected for precision voltage clamping, overvoltage protection, and low-current biasing where tight tolerance, low leakage, and hard breakdown knee are required.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain a stable 3.3 V reference across its terminals under controlled current conditions. Its design emphasizes low dynamic impedance (≤95 Ω at IZ = 5 mA) and minimal temperature drift (−2.4 mV/K), enabling accurate regulation in ambient temperatures from −55 °C to +150 °C.
The device features a hard breakdown knee and very low leakage current-5 µA at 0.5 mA reverse bias-making it suitable for battery-powered and energy-sensitive applications. Its SOD323 package supports high-density surface-mount assembly while maintaining thermal resistance of 255 K/W (junction-to-solder point) on standard FR4 PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 3.3 V at IZ = 5 mA - defines precise regulation point for feedback and reference circuits |
| Tolerance | ±2 % (B1 series) - ensures voltage accuracy within ±0.066 V for critical biasing |
| Differential Resistance | ≤95 Ω at IZ = 5 mA - minimizes output voltage variation under load changes |
| Reverse Current | 5 µA at VR = 0.5 × VZ - enables ultra-low standby power in always-on monitoring circuits |
| Temperature Coefficient | −2.4 mV/K - provides predictable, linear VZ drift for compensated designs |
| Total Power Dissipation | 320 mW at Tamb ≤ 25 °C - supports continuous operation in compact PCB layouts |
| Non-repetitive Peak Power | 40 W (100 µs square wave) - handles transient surges without degradation |
Pinout & Package
SOD323 (SC-76) plastic surface-mount package: 1.7 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch, cathode marked by bar on top surface.
| 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 for Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Hard breakdown knee | Enables sharp, predictable turn-on for clean voltage clamping without soft saturation |
| Very low leakage current | 5 µA at 0.5 mA reverse bias reduces quiescent power loss in battery-backed systems |
| ±2 % voltage tolerance | Supports tighter closed-loop control in precision analog references and ADC bias networks |
| Low thermal resistance | 255 K/W junction-to-solder point allows reliable operation at 150 °C junction temperature |
| Small-footprint SOD323 | Enables high-density placement in space-constrained IoT sensor nodes and portable electronics |
Applications
| Power Supply Feedback Loop | Overvoltage Protection Clamp |
|---|---|
|
Use Scenario: Regulating output voltage in isolated DC-DC converters using optocoupler feedback. IC Role / Device Role / Timing Role: Provides stable 3.3 V reference to TL431-like shunt regulator IC input. Use Value: ±2 % tolerance ensures output accuracy within ±15 mV, meeting industrial 3.3 V rail requirements. |
Use Scenario: Protecting microcontroller GPIO pins from ESD-induced voltage spikes. IC Role / Device Role / Timing Role: Acts as fast-acting clamp between I/O line and ground during transients. Use Value: Hard breakdown knee and 40 W surge rating suppress >8 kV HBM events without latch-up. |
| Low-Power Sensor Biasing | Reference Voltage Generator |
|
Use Scenario: Supplying excitation voltage to resistive temperature detectors (RTDs) in wireless sensor nodes. IC Role / Device Role / Timing Role: Delivers stable 3.3 V bias with <5 µA leakage to minimize battery drain. Use Value: Low leakage extends 10-year battery life in LoRaWAN endpoint designs. |
Use Scenario: Generating precision reference for 12-bit SAR ADC in medical instrumentation. IC Role / Device Role / Timing Role: Serves as primary voltage reference source for ADC internal buffer. Use Value: −2.4 mV/K TC and 95 Ω rdif limit full-scale error to <0.5 LSB over 0–70 °C range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B3V3,115 | Same SOD323 package, ±2 % tolerance, but higher rdif (120 Ω) and higher IR (10 µA at 0.5 mA) | Less suitable for ultra-low-leakage biasing; acceptable for general-purpose clamping | Select when cost priority outweighs leakage and impedance requirements |
| MMSZ4685T1G | SO-23 package, ±5 % tolerance, 3.3 V nominal, rdif = 100 Ω, IR = 1 µA at 1 V | Larger footprint and looser tolerance reduce suitability for precision feedback loops | Choose only if board layout requires SO-23 compatibility or legacy BOM alignment |
Compared with PZU3.3B1A,115, BZX384-B3V3,115 trades leakage and impedance performance for broader availability, while MMSZ4685T1G sacrifices tolerance and package size for established supply chain support-neither matches the combination of ±2 %, 5 µA leakage, and 95 Ω rdif in SOD323.
Availability
PZU3.3B1A,115 is available at Aetrix Electronics and suitable for power supply feedback loops, overvoltage protection clamps, low-power sensor biasing, and precision reference voltage generation requiring stable component supply across production volumes.
Supply support for PZU3.3B1A,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 global semiconductor manufacturer specializing in high-volume logic, discrete, and MOSFET devices, with core expertise in reliability, miniaturization, and automotive-grade qualification.
The PZUxBA series targets general-purpose voltage regulation in consumer, industrial, and communication equipment, emphasizing small size, tight tolerance, and robust surge handling in SMD packages.
FAQ
What is the maximum continuous reverse current for PZU3.3B1A,115 at 25 °C ambient?
The device supports up to 200 mA forward current, but as a Zener diode, its continuous reverse current is limited by power dissipation. At 25 °C ambient on standard FR4 PCB, maximum continuous reverse current is 97 mA (320 mW ÷ 3.3 V), assuming negligible forward drop. Derating applies above 25 °C per thermal resistance data.
Does PZU3.3B1A,115 meet AEC-Q200 for automotive use?
No. The PZU3.3B1A,115 is not automotive-qualified. Nexperia explicitly states in its legal disclaimers that non-automotive qualified products like this Zener series are unsuitable for safety-critical or life-support systems, and no AEC-Q200 stress testing or qualification is performed or claimed.
How does the −2.4 mV/K temperature coefficient affect regulation accuracy over temperature?
At 3.3 V nominal, −2.4 mV/K causes a −0.24 V shift over a 100 K rise (e.g., −40 °C to +60 °C). Combined with ±2 % initial tolerance, total deviation remains within ±3.2 % across that range-sufficient for non-precision industrial applications but requiring compensation in metrology-grade designs.
Can PZU3.3B1A,115 be used in parallel for higher power handling?
No. Zener diodes exhibit manufacturing variations in breakdown voltage, causing current hogging when paralleled. Even matched units risk thermal runaway due to negative temperature coefficient. For higher power, use a single higher-rated Zener or switch to an active shunt regulator topology.
PZU3.3B1A,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 3.3 V
- Tolerance:
- ±2%
- 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
PZU3.3B1A,115 FAQ
1.How can I place an order for PZU3.3B1A,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU3.3B1A,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 PZU3.3B1A,115 reliable?
The price and inventory of PZU3.3B1A,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU3.3B1A,115 is usually 5 days.
3.What payment methods are accepted for PZU3.3B1A,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU3.3B1A,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU3.3B1A,115?
PZU3.3B1A,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU3.3B1A,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 PZU3.3B1A,115?
For technical support, including PZU3.3B1A,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU3.3B1A,115 requirements.
6.How does Aetrix verify that PZU3.3B1A,115 is sourced from the original manufacturer or authorized distributors?
All PZU3.3B1A,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 PZU3.3B1A,115 meets industry standards.
7.What is the process for return or replacement of PZU3.3B1A,115?
All PZU3.3B1A,115 units undergo pre-shipment inspection (PSI). If there is an issue with PZU3.3B1A,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 PZU3.3B1A,115 part is unused and in its original packaging.
Return procedure for PZU3.3B1A,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU3.3B1A,115 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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BZT52C15-7-F
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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
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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BZT52C3V6LP-7
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SMAZ12-13-F
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