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Nexperia USA Inc. PZU3.0B1A,115
- Part No.:
- PZU3.0B1A,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PZU3.0B1A,115.pdf
- Description:
- DIODE ZENER 3V 320MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:7,953
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Product details
Overview
PZU3.0B1A,115 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 3.0 V nominal working voltage at 5 mA, with 95 Ω maximum differential resistance, 10 nA reverse current at 0.5 mA, and −2.1 mV/K temperature coefficient. It delivers stable reference voltage in low-power analog circuits, power supply feedback loops, and overvoltage protection stages.
For engineers reviewing the PZU3.0B1A,115 datasheet, PZU3.0B1A,115 pinout, PZU3.0B1A,115 application, or PZU3.0B1A,115 equivalent, this device supports precision voltage clamping in space-constrained SMT designs where tight regulation tolerance, low leakage, and hard breakdown knee are required.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain a stable 3.0 V reference across its terminals under defined current conditions (IZ = 5 mA). Its −2.1 mV/K temperature coefficient ensures predictable drift over ambient range, and its 95 Ω differential resistance enables low-voltage-error regulation at low currents.
The device uses silicon planar technology with optimized junction design for sharp knee characteristics and minimal leakage-critical for battery-powered sensor nodes and low-quiescent-current LDO feedback paths. It is not intended for high-current shunt regulation but excels in signal-level voltage referencing and transient suppression below 200 mA forward/peak reverse limits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 3.0 V at IZ = 5 mA - defines precise clamping threshold for 3.3 V rail monitoring or 3.0 V reference generation |
| Zener Tolerance | ±2 % (B1 series) - guarantees voltage accuracy within ±60 mV, enabling tighter system-level tolerance budgets |
| Differential Resistance | ≤95 Ω at IZ = 5 mA - minimizes output voltage shift under load variation in feedback networks |
| Reverse Current | ≤10 nA at VR = 0.5 mA - ensures negligible standby power loss in always-on voltage monitor circuits |
| Temperature Coefficient | −2.1 mV/K - provides predictable negative drift, simplifying compensation in wide-temperature industrial sensors |
| Total Power Dissipation | 320 mW at Tamb ≤ 25 °C - supports continuous operation in compact PCB layouts with standard FR4 copper |
| Package | SOD323 (SC-76), 1.7 mm × 1.25 mm × 0.95 mm - enables high-density placement in portable and IoT endpoint designs |
Pinout & Package
SOD323 (SC-76) surface-mount plastic package with 2 leads, 1.3 mm pitch, and 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 orientation during placement |
| 2 | Anode | Connected to ground or lower-potential rail; forms reverse-biased junction when clamping above reference voltage |
Key Features
| Feature | Design Value |
|---|---|
| Hard breakdown knee | Enables clean, repeatable clamping onset without soft turn-on ambiguity-critical for accurate overvoltage detection |
| Very low leakage current | ≤10 nA at 0.5 mA reverse bias reduces error in high-impedance reference dividers and extends battery life |
| ±2 % voltage tolerance (B1) | Eliminates need for post-production trimming in cost-sensitive consumer and industrial control applications |
| Low dynamic impedance at low currents | 95 Ω at 5 mA maintains regulation stability even in microampere-level biasing typical of op-amp reference inputs |
Applications
| Power Supply Feedback | Overvoltage Protection |
|---|---|
Use Scenario: Regulating output of isolated DC-DC converter via optocoupler feedback loop. IC Role / Device Role / Timing Role: Zener diode provides precise 3.0 V reference to TL431 shunt regulator input, setting output voltage threshold. Use Value: ±2 % tolerance ensures ±1.5 % output accuracy without external calibration, reducing BOM count and test time. |
Use Scenario: Protecting microcontroller I/O pin from ESD-induced voltage spikes on 3.3 V bus. IC Role / Device Role / Timing Role: Clamps transient voltage to ≤3.6 V before it reaches MCU input protection diodes. Use Value: Hard breakdown knee and 95 Ω impedance limit overshoot duration and amplitude, preventing latch-up. |
| Reference Voltage Source | Signal Level Shifting |
Use Scenario: Generating stable 3.0 V reference for ADC in battery-powered environmental sensor node. IC Role / Device Role / Timing Role: Supplies bias point for ratiometric sensor excitation and ADC reference divider. Use Value: 10 nA leakage avoids measurable voltage drop across high-value divider resistors, preserving measurement linearity. |
Use Scenario: Translating 5 V logic signal down to 3.0 V compatible level for low-voltage FPGA I/O bank. IC Role / Device Role / Timing Role: Acts as passive clamp to limit high-side swing while sinking minimal current. Use Value: Low capacitance (<425 pF) and fast response preserve signal edge integrity up to 10 MHz switching rates. |
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-B3V0,115 | Same SOD323 package, ±2 % tolerance, but higher 120 Ω rdif and 50 nA IR at 0.5 mA | Less suitable for ultra-low-leakage reference dividers; acceptable for general-purpose clamping | Select when cost priority outweighs leakage sensitivity and thermal drift performance |
| MMSZ4684T1G | SOD-123 package (larger footprint), ±5 % tolerance, 100 Ω rdif, 100 nA IR at 0.5 mA | Requires more PCB area; looser tolerance increases system calibration burden | Choose only if SOD-123 is already standardized in legacy layout and ±5 % is acceptable |
Compared with PZU3.0B1A,115, BZX384-B3V0,115 trades leakage and impedance for broader distributor availability, while MMSZ4684T1G sacrifices precision and size for higher surge robustness-neither matches the combination of ±2 %, sub-10 nA leakage, and SOD323 miniaturization.
Availability
PZU3.0B1A,115 is available at Aetrix Electronics and suitable for power supply feedback, overvoltage protection, and reference voltage source applications requiring stable component supply, consistent parametric performance, and long-term SMT manufacturability.
Supply support for PZU3.0B1A,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 expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified and industrial-grade components.
The PZUxBA series targets general-purpose voltage regulation in space-constrained consumer, industrial, and computing applications-designed for precision, low leakage, and seamless SMT integration without thermal derating penalties.
FAQ
What is the maximum continuous reverse current for PZU3.0B1A,115?
The device has no specified maximum continuous reverse current rating; instead, it is limited by total power dissipation (320 mW at Tamb ≤ 25 °C) and junction temperature (150 °C). At 3.0 V Zener voltage, this corresponds to ~107 mA average reverse current under ideal thermal conditions-practical design must include derating per PCB copper area and ambient temperature.
Can PZU3.0B1A,115 be used in place of a 3.3 V Zener diode?
No-it is specifically rated for 3.0 V nominal Zener voltage at 5 mA, with guaranteed range of 2.95 V to 3.20 V (B2 tolerance). Substituting into a 3.3 V circuit would cause undershoot in regulation or clamping, potentially compromising system margin; use PZU3.3B1A,115 for 3.3 V applications.
How does the −2.1 mV/K temperature coefficient affect circuit performance?
This coefficient means the Zener voltage decreases by 2.1 mV per Kelvin rise in junction temperature. Over a 100 K range (−40 °C to +60 °C ambient, assuming ~30 K self-heating), voltage drift is ~210 mV-requiring compensation in high-accuracy references, but acceptable for non-critical clamping where absolute value is secondary to consistency.
Is PZU3.0B1A,115 suitable for automotive applications?
No-this part is not AEC-Q200 qualified or automotive grade. Nexperia explicitly states in its legal disclaimers that non-automotive qualified products like PZU3.0B1A,115 are unsuitable for safety-critical, life-support, or automotive systems; use only in commercial/industrial environments with appropriate risk mitigation.
PZU3.0B1A,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 V
- Tolerance:
- ±2%
- Power - Max:
- 320 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 10 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
PZU3.0B1A,115 FAQ
1.How can I place an order for PZU3.0B1A,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU3.0B1A,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 PZU3.0B1A,115 reliable?
The price and inventory of PZU3.0B1A,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU3.0B1A,115 is usually 5 days.
3.What payment methods are accepted for PZU3.0B1A,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU3.0B1A,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU3.0B1A,115?
PZU3.0B1A,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU3.0B1A,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 PZU3.0B1A,115?
For technical support, including PZU3.0B1A,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU3.0B1A,115 requirements.
6.How does Aetrix verify that PZU3.0B1A,115 is sourced from the original manufacturer or authorized distributors?
All PZU3.0B1A,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 PZU3.0B1A,115 meets industry standards.
7.What is the process for return or replacement of PZU3.0B1A,115?
All PZU3.0B1A,115 units undergo pre-shipment inspection (PSI). If there is an issue with PZU3.0B1A,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 PZU3.0B1A,115 part is unused and in its original packaging.
Return procedure for PZU3.0B1A,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU3.0B1A,115 Tags
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