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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

NXP Semiconductors PZU3.0B,115

Name: PZU3.0B,115
Brand: NXP Semiconductors
SKU: PZU3.0B,115
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PZU3.0B,115

Manufacturer:: NXP Semiconductors

Category:: Single Zener Diodes

Package:: -

Datasheet:: PZU3.0B,115.pdf

Description:: DIODE ZENER 3V 310MW SOD323F

Quantity:: RFQ Add To RFQ list

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Inventory:22,114

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Product details

Overview

PZU3.0B,115 from NXP Semiconductors is a single Zener diode in SOD323F (SC-90) surface-mount package, designed for precision voltage regulation at 3.0 V nominal Zener voltage with ±5 % tolerance, 10 Ω maximum differential resistance at I_Z = 5 mA, and 310 mW total power dissipation at T_amb ≤ 25 °C. It serves as a stable reference or clamp in low-power analog signal conditioning circuits.

For engineers reviewing the PZU3.0B,115 datasheet, PZU3.0B,115 pinout, PZU3.0B,115 application, or PZU3.0B,115 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (R_th(j-a) = 400 K/W), reverse current (I_R ≤ 10 μA at V_R = 2.4 V), junction temperature limit (150 °C), and SOD323F footprint compatibility with high-density PCB layouts.

Technical Context

The PZU3.0B,115 operates as a two-terminal voltage reference device relying on controlled reverse breakdown. Its Zener voltage is specified at I_Z = 5 mA with a typical temperature coefficient of −2.1 mV/K, indicating negative drift over temperature - critical for biasing stability in temperature-sensitive analog stages.

It exhibits low dynamic impedance (r_dif ≤ 1000 Ω at I_Z = 0.5 mA; ≤ 95 Ω at I_Z = 5 mA) and low capacitance (C_d ≤ 1 pF at f = 1 MHz, V_R = 0 V), enabling effective noise suppression and fast transient response in feedback networks and overvoltage protection paths.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage V_Z	2.80 V to 3.20 V at I_Z = 5 mA - defines tight regulation window for 3.0 V reference designs
Tolerance	±5 % (B grade) - enables predictable voltage margining without post-calibration
Differential Resistance r_dif	≤95 Ω at I_Z = 5 mA - ensures minimal output voltage shift under load variation
Reverse Current I_R	≤10 μA at V_R = 2.4 V - guarantees low leakage in standby or high-impedance sensing nodes
Total Power Dissipation P_tot	310 mW at T_amb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 PCB
Junction Temperature T_j	150 °C maximum - constrains thermal design for reliability in enclosed or high-ambient environments
Thermal Resistance R_th(j-a)	400 K/W in free air - determines temperature rise per watt; requires derating above 25 °C ambient

Pinout & Package

SOD323F (SC-90) plastic surface-mounted package: 2-pin, ultra-small outline (2.7 mm × 1.6 mm × 0.95 mm), flat lead, cathode marked by bar.

Pin/Terminal	Circuit Role	Design Meaning
1	Cathode	Connected to regulated output node; polarity indicator via marking bar; carries reverse breakdown current
2	Anode	Connected to ground or lower-potential rail; completes Zener conduction path during regulation

Key Features

Feature	Design Value
Ultra-compact SMD package	SOD323F footprint (2.7 × 1.6 mm) enables placement in space-constrained consumer and portable electronics
Stable low-voltage reference	3.0 V nominal Zener with −2.1 mV/K tempco supports accurate biasing in op-amp input stages and ADC references
Low dynamic impedance	≤95 Ω at 5 mA ensures minimal regulation error under varying load currents in feedback loops
Low leakage performance	I_R ≤ 10 μA at 2.4 V allows use in battery-powered systems where quiescent current must be minimized
Robust thermal rating	150 °C max junction temperature supports operation in automotive under-hood or industrial control enclosures

Applications

Power Supply Rail Clamping	ADC Reference Stabilization
Use Scenario: Protecting microcontroller I/O pins from transient overvoltage events on 3.3 V supply rails. IC Role / Device Role / Timing Role: Zener clamping diode placed between rail and ground to shunt excess energy above 3.0 V. Use Value: Limits voltage excursion to ≤3.2 V (max V_Z) with fast response, preventing latch-up or ESD damage without external active circuitry.	Use Scenario: Providing stable reference voltage for 10-bit SAR ADC in sensor interface circuit. IC Role / Device Role / Timing Role: Passive voltage reference source feeding ADC REF+ input, replacing higher-cost bandgap ICs. Use Value: Delivers 3.0 V ±5 % reference with <10 μA leakage, minimizing reference loading error and enabling <0.5 LSB offset contribution.
Op-Amp Bias Network	Low-Power Sensor Excitation
Use Scenario: Setting precise bias point for rail-to-rail op-amp input stage in battery-operated gas sensor amplifier. IC Role / Device Role / Timing Role: Zener-based voltage divider generating fixed common-mode voltage for differential input. Use Value: Maintains bias within ±15 mV over 0–70 °C due to known −2.1 mV/K tempco, enabling calibrated offset compensation.	Use Scenario: Supplying excitation voltage to resistive temperature detector (RTD) in wearable health monitor. IC Role / Device Role / Timing Role: Low-current Zener regulator powering RTD bridge with minimal self-heating. Use Value: Draws only ~100 μA at 3.0 V, limiting RTD self-heating to <0.01 °C - preserving measurement accuracy.

Power Supply Rail Clamping

ADC Reference Stabilization

Use Scenario: Protecting microcontroller I/O pins from transient overvoltage events on 3.3 V supply rails.

IC Role / Device Role / Timing Role: Zener clamping diode placed between rail and ground to shunt excess energy above 3.0 V.

Use Value: Limits voltage excursion to ≤3.2 V (max V_Z) with fast response, preventing latch-up or ESD damage without external active circuitry.

Use Scenario: Providing stable reference voltage for 10-bit SAR ADC in sensor interface circuit.

IC Role / Device Role / Timing Role: Passive voltage reference source feeding ADC REF+ input, replacing higher-cost bandgap ICs.

Use Value: Delivers 3.0 V ±5 % reference with <10 μA leakage, minimizing reference loading error and enabling <0.5 LSB offset contribution.

Op-Amp Bias Network

Low-Power Sensor Excitation

Use Scenario: Setting precise bias point for rail-to-rail op-amp input stage in battery-operated gas sensor amplifier.

IC Role / Device Role / Timing Role: Zener-based voltage divider generating fixed common-mode voltage for differential input.

Use Value: Maintains bias within ±15 mV over 0–70 °C due to known −2.1 mV/K tempco, enabling calibrated offset compensation.

Use Scenario: Supplying excitation voltage to resistive temperature detector (RTD) in wearable health monitor.

IC Role / Device Role / Timing Role: Low-current Zener regulator powering RTD bridge with minimal self-heating.

Use Value: Draws only ~100 μA at 3.0 V, limiting RTD self-heating to <0.01 °C - preserving measurement accuracy.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener diode applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX384-B3V0,115	Same SOD323F package, ±5 % tolerance, but higher r_dif (≤100 Ω vs. ≤95 Ω) and higher I_R (≤50 μA at 2.4 V)	Less suitable for ultra-low-leakage biasing; acceptable for general-purpose clamping	Choose BZX384-B3V0,115 only when cost sensitivity outweighs leakage or impedance requirements
MMSZ3V0T1G	SOD-123 package (larger: 3.7 × 1.6 mm), same 3.0 V/±5 % spec, but higher P_tot (500 mW) and lower R_th(j-a) (300 K/W)	Better thermal performance but incompatible footprint; requires PCB redesign	Select MMSZ3V0T1G only when higher power handling or improved thermal margin is mandatory and layout change is feasible

Compared with PZU3.0B,115, BZX384-B3V0,115 trades tighter leakage and impedance for broader availability, while MMSZ3V0T1G offers superior thermal capability at the cost of board space and rework - making PZU3.0B,115 optimal for miniaturized, low-leakage 3.0 V regulation where SOD323F fit is fixed.

Availability

PZU3.0B,115 is available at Aetrix Electronics and suitable for power rail clamping, analog reference stabilization, op-amp biasing, and low-power sensor excitation requiring stable component supply across high-mix production runs.

Supply support for PZU3.0B,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 IoT applications.

The PZUxB series was developed to deliver high-precision, low-profile Zener diodes for space-constrained voltage reference and protection functions in consumer, computing, and portable electronics.

FAQ

What is the nominal Zener voltage and tolerance of the PZU3.0B,115?

The PZU3.0B,115 has a nominal Zener voltage of 3.0 V, specified over the range 2.80 V to 3.20 V at test current I_Z = 5 mA. Its tolerance grade 'B' corresponds to approximately ±5 %, confirmed in Table 8 of the NXP datasheet. This tolerance directly defines the worst-case regulation window in precision reference applications using the PZU3.0B,115.

Does the PZU3.0B,115 support reflow soldering, and what is its maximum junction temperature?

Yes, the PZU3.0B,115 is qualified for reflow soldering only - wave or hand soldering is not recommended. Its absolute maximum junction temperature is 150 °C, as stated in Table 5 (Limiting Values). This rating must be respected during both soldering profile design and end-equipment thermal management to ensure long-term reliability of the PZU3.0B,115.

What is the reverse leakage current specification for the PZU3.0B,115 at 2.4 V?

At V_R = 2.4 V and T_j = 25 °C, the PZU3.0B,115 exhibits a maximum reverse current I_R of 10 μA, per Table 8 in the NXP datasheet. This low leakage is critical for battery-powered applications where standby current must be minimized - a key differentiator of the PZU3.0B,115 versus higher-leakage Zener alternatives.

How does the temperature coefficient of the PZU3.0B,115 affect its performance in bias circuits?

The PZU3.0B,115 has a typical temperature coefficient (S_Z) of −2.1 mV/K at I_Z = 5 mA, meaning its Zener voltage decreases by ~2.1 mV per degree Celsius rise. In op-amp bias networks or ADC references, this predictable negative drift allows for first-order compensation - making the PZU3.0B,115 suitable for applications where moderate thermal stability is sufficient without active correction.

Is the PZU3.0B,115 pin-compatible with other SOD323F Zener diodes from NXP?

Yes, all PZUxB series devices including the PZU3.0B,115 share identical SOD323F (SC-90) packaging and pinout: Pin 1 is cathode (marked), Pin 2 is anode. This uniformity allows direct substitution across the 2.4 V–36 V family without layout changes - provided voltage, tolerance, and power requirements align, as verified in the PZU3.0B,115 datasheet.

PZU3.0B,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:: -

PZU3.0B,115 FAQ

1.How can I place an order for PZU3.0B,115 through Aetrix?

Please submit a Request for Quotation (RFQ) for PZU3.0B,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 PZU3.0B,115 reliable?

The price and inventory of PZU3.0B,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU3.0B,115 is usually 5 days.

3.What payment methods are accepted for PZU3.0B,115?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU3.0B,115 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PZU3.0B,115?

PZU3.0B,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PZU3.0B,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 PZU3.0B,115?

For technical support, including PZU3.0B,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU3.0B,115 requirements.

6.How does Aetrix verify that PZU3.0B,115 is sourced from the original manufacturer or authorized distributors?

All PZU3.0B,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 PZU3.0B,115 meets industry standards.

7.What is the process for return or replacement of PZU3.0B,115?

All PZU3.0B,115 units undergo pre-shipment inspection (PSI). If there is an issue with PZU3.0B,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 PZU3.0B,115 part is unused and in its original packaging.

Return procedure for PZU3.0B,115:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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