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

Nexperia USA Inc. PZU14B2A,115

Name: PZU14B2A,115
Brand: Nexperia USA Inc.
SKU: PZU14B2A,115
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PZU14B2A,115

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

Package:: SC-76, SOD-323

Datasheet:: PZU14B2A,115.pdf

Description:: DIODE ZENER 14V 320MW SOD323

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Product details

Overview

PZU14B2A,115 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 14 V nominal working voltage, 320 mW total power dissipation at 25 °C ambient, and 11 A non-repetitive peak reverse current under 100 µs square-wave surge. It delivers low dynamic impedance (80 Ω max at I_Z = 5 mA), 10 nA reverse current at 0.5 mA test condition, and optimized leakage for fast switching and noise reduction per AN90031.

For engineers reviewing the PZU14B2A,115 datasheet, PZU14B2A,115 pinout, PZU14B2A,115 application, or PZU14B2A,115 equivalent, key selection criteria include Zener voltage tolerance (±2 %), thermal resistance to solder point (255 K/W), differential resistance at low bias, junction temperature limit (150 °C), and SC-76 footprint compatibility with automated SMT assembly.

Technical Context

This Zener diode operates in reverse-biased breakdown mode to maintain stable reference voltage across load variations and supply fluctuations. Its hard breakdown knee and intentional minor leakage rise support clean transient response in voltage-clamping and overvoltage protection circuits.

Designed for surface-mounted use on FR4 PCBs with single-sided copper, it exhibits R_th(j-sp) = 255 K/W to solder point and R_th(j-a) = 390 K/W in free air - critical for thermal design in space-constrained applications where heat sinking is limited.

Key Specifications

Parameter	Value and Actual Design Meaning
Nominal Zener Voltage	14 V - precise regulation target at I_Z = 5 mA, enabling accurate voltage reference in analog sensing and power monitoring.
Zener Tolerance	±2 % (B2 series) - tight voltage binning ensures consistent performance across production batches without post-assembly calibration.
Differential Resistance	≤80 Ω at I_Z = 5 mA - low impedance maintains stable output under varying load currents, minimizing regulation error.
Reverse Current	≤10 nA at I_Z = 0.5 mA - ultra-low leakage preserves battery life in always-on circuits and reduces standby power loss.
Non-repetitive Peak Reverse Current	11 A (tp = 100 µs) - supports robust ESD and surge immunity in I/O line protection without device failure.
Junction Temperature Limit	150 °C - defines maximum allowable die temperature during operation, constraining continuous power derating above 25 °C ambient.
Package	SOD323 (SC-76) - 1.7 mm × 1.25 mm × 0.95 mm footprint enables high-density PCB layouts and compatibility with standard 0805 reflow profiles.

Pinout & Package

SOD323 (SC-76) plastic surface-mount package with cathode-marked end (bar marking), 1.3 mm lead pitch, and tin-plated terminations compatible with lead-free reflow soldering.

Pin/Terminal	Circuit Role	Design Meaning
1	Cathode	Connected to regulated output node; marking bar identifies this terminal - essential for correct polarity in clamping and reference circuits.
2	Anode	Connected to ground or lower-potential rail; reverse-bias configuration requires anode at lower voltage than cathode to enable Zener conduction.

Key Features

Feature	Design Value
Optimized leakage for fast switching	Intentional minor IR rise improves transient response time and reduces high-frequency noise in voltage-reference paths (AN90031).
Hard breakdown knee	Sharp, well-defined Zener turn-on characteristic minimizes voltage hysteresis and enhances accuracy in precision regulation.
Low thermal resistance to solder point	R_th(j-sp) = 255 K/W enables effective heat transfer to PCB copper, supporting sustained operation near P_tot limit.
Small outline package	SOD323 footprint (1.7 × 1.25 mm) allows placement in tight spaces such as portable device power rails and sensor interface boards.
Wide voltage range coverage	Part of 105-type series spanning 2.4 V–51 V (E24), enabling standardized BOM management across diverse voltage rails.

Applications

Power Supply Voltage Clamping

Microcontroller I/O Protection

Use Scenario: Clamp transient overvoltage spikes on 12 V DC input rails feeding industrial PLC modules.

IC Role / Device Role / Timing Role: Zener diode acts as shunt regulator, conducting excess current when input exceeds 14 V to protect downstream LDOs and logic ICs.

Use Value: 11 A surge rating absorbs 100 µs transients per IEC 61000-4-5 Level 3, eliminating need for external TVS cascading.

Use Scenario: Protect 3.3 V GPIO pins of ARM Cortex-M4 microcontrollers against ESD events during board-level handling.

IC Role / Device Role / Timing Role: Functions as low-capacitance (101 pF) clamp between I/O line and ground, diverting ESD current before internal protection diodes activate.

Use Value: 10 nA reverse leakage avoids signal distortion in high-impedance analog inputs while maintaining fast response via optimized leakage profile.

Reference Voltage Source

Overvoltage Detection Threshold

Use Scenario: Provide stable 14 V reference for comparator-based battery charge termination in 12 V lead-acid systems.

IC Role / Device Role / Timing Role: Supplies fixed Zener voltage to comparator non-inverting input, triggering cutoff when battery reaches float voltage.

Use Value: ±2 % tolerance ensures detection threshold remains within ±0.28 V, meeting automotive-grade charge control accuracy requirements.

Use Scenario: Set trip point for overvoltage lockout in USB-C PD sink controller monitoring VBUS up to 20 V.

IC Role / Device Role / Timing Role: Connected in series with resistor divider to generate precise 14 V threshold signal for OVP comparator input.

Use Value: Low dynamic impedance (80 Ω) prevents loading-induced voltage droop, preserving threshold accuracy across temperature (-55 °C to +150 °C).

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX384-B14,115	Same 14 V nominal, ±2 % tolerance, but SOD323 package with higher typical rdif (100 Ω vs. 80 Ω) and higher IR (20 nA vs. 10 nA).	Less suitable for low-leakage analog references; acceptable for general-purpose clamping where tighter impedance isn't required.	Select when cost sensitivity outweighs need for lowest dynamic impedance and leakage in precision circuits.
MMSZ4687T1G	14 V, ±5 % tolerance (B grade), SOD-123 package (larger: 2.7 × 1.4 mm), P_tot = 500 mW, rdif = 30 Ω typical.	Better power handling but looser tolerance and larger footprint; lacks intentional leakage optimization for noise-sensitive designs.	Prefer for higher-power clamping where ±5 % tolerance is acceptable and board space permits SOD-123.

Compared with BZX384-B14,115 and MMSZ4687T1G, PZU14B2A,115 offers superior voltage accuracy (±2 %), lower leakage (10 nA), and application-tuned leakage behavior for noise-critical references - making it optimal for compact, precision-regulated systems where SOD323 size and thermal performance are constraints.

Availability

PZU14B2A,115 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, IoT sensor nodes, and medical instrumentation requiring stable component supply and long-term manufacturability.

Supply support for PZU14B2A,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 components and energy-efficient solutions.

PZUxBA series belongs to Nexperia's general-purpose Zener regulator portfolio, designed specifically for surface-mounted voltage reference, clamping, and overvoltage protection in space-constrained consumer, industrial, and computing applications.

FAQ

What is the maximum continuous power dissipation for PZU14B2A,115 at 70 °C ambient?

At 70 °C ambient, PZU14B2A,115 must be derated linearly from its 320 mW rating at 25 °C using the thermal resistance R_th(j-a) = 390 K/W. The maximum allowable power is approximately 175 mW, calculated as P_tot = (150 °C − 70 °C) / 390 K/W ≈ 0.205 W, rounded conservatively to ensure junction temperature stays ≤150 °C.

Does PZU14B2A,115 meet JEDEC J-STD-020 moisture sensitivity level (MSL) requirements?

Yes - PZU14B2A,115 is qualified to MSL Level 1 per JEDEC J-STD-020, meaning it has unlimited floor life at ≤30 °C/85 % RH and may be assembled without baking, simplifying SMT manufacturing flow for high-mix production environments.

How does the "B2" suffix affect Zener voltage specification?

The "B2" suffix denotes ±2 % tolerance at I_Z = 5 mA, corresponding to a guaranteed V_Z range of 13.70 V to 14.30 V. This tighter binning supports applications requiring higher voltage accuracy than standard ±5 % (B-series) parts, reducing calibration overhead in production test.

Can PZU14B2A,115 be used in place of a 1N4742A in existing designs?

No - although both regulate at ~14 V, PZU14B2A,115 is a 2-pin SOD323 surface-mount device with 320 mW rating, while 1N4742A is a through-hole DO-41 device rated at 1 W. Direct substitution requires PCB redesign, thermal validation, and verification of surge capability (11 A vs. ~30 A for 1N4742A), making it unsuitable for drop-in replacement.

PZU14B2A,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):: 14 V

Tolerance:: ±2%

Power - Max:: 320 mW

Impedance (Max) (Zzt):: 10 Ohms

Current - Reverse Leakage @ Vr:: 100 nA @ 11 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

PZU14B2A,115 FAQ

1.How can I place an order for PZU14B2A,115 through Aetrix?

Please submit a Request for Quotation (RFQ) for PZU14B2A,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 PZU14B2A,115 reliable?

The price and inventory of PZU14B2A,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU14B2A,115 is usually 5 days.

3.What payment methods are accepted for PZU14B2A,115?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU14B2A,115 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PZU14B2A,115?

PZU14B2A,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PZU14B2A,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 PZU14B2A,115?

For technical support, including PZU14B2A,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU14B2A,115 requirements.

6.How does Aetrix verify that PZU14B2A,115 is sourced from the original manufacturer or authorized distributors?

All PZU14B2A,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 PZU14B2A,115 meets industry standards.

7.What is the process for return or replacement of PZU14B2A,115?

All PZU14B2A,115 units undergo pre-shipment inspection (PSI). If there is an issue with PZU14B2A,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 PZU14B2A,115 part is unused and in its original packaging.

Return procedure for PZU14B2A,115:

1.Submit a request within 90 days.

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

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