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

Nexperia USA Inc. PZU2.7B1A,115

Name: PZU2.7B1A,115
Brand: Nexperia USA Inc.
SKU: PZU2.7B1A,115
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PZU2.7B1A,115

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

Package:: SC-76, SOD-323

Datasheet:: PZU2.7B1A,115.pdf

Description:: DIODE ZENER 2.7V 320MW SOD323

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Inventory:9,570

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Product details

Overview

PZU2.7B1A,115 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, designed for precision low-voltage reference and overvoltage protection in space-constrained PCBs. It delivers 2.7 V nominal regulation at 5 mA, with 1000 Ω max differential resistance, 20 µA max reverse current at 0.5 mA, and −2.0 mV/K temperature coefficient - enabling stable biasing in sensor interfaces and power supply feedback loops.

For engineers reviewing the PZU2.7B1A,115 datasheet, PZU2.7B1A,115 pinout, PZU2.7B1A,115 application, or PZU2.7B1A,115 equivalent, this device supports critical low-voltage stabilization where tight tolerance, low leakage, and hard breakdown knee are required - especially in battery-powered instrumentation and analog front-end circuits.

Technical Context

This Zener diode operates in reverse-biased breakdown mode to maintain a stable 2.7 V reference across load and line variations. Its ±2 % tolerance (B1 series), −2.0 mV/K temperature coefficient, and 1000 Ω max dynamic impedance at I_Z = 5 mA ensure predictable regulation under thermal drift and current fluctuations.

Designed for surface-mount use in SOD323, it supports non-repetitive surge handling up to 40 W (100 µs square wave) and continuous dissipation of 320 mW on FR4 PCB. The cathode-anode polarity is marked by a bar, aligning with standard PCB layout conventions for unidirectional clamping.

Key Specifications

Parameter	Value and Actual Design Meaning
Nominal Zener Voltage	2.7 V at I_Z = 5 mA - defines precise regulation point for feedback networks and reference generation
Tolerance	±2 % (B1 series) - enables tighter output voltage control vs. ±5 % variants in precision analog designs
Differential Resistance	≤1000 Ω at I_Z = 5 mA - limits regulation error under varying load current
Reverse Current	≤20 µA at V_R = 1 V - ensures minimal quiescent power loss in always-on monitoring circuits
Temperature Coefficient	−2.0 mV/K - provides predictable, linear V_Z drift for thermal compensation planning
Total Power Dissipation	320 mW at T_amb ≤ 25 °C on FR4 - sets maximum steady-state bias current limit (≈118 mA at 2.7 V)
Package	SOD323 (SC-76), 1.7 × 1.25 × 0.95 mm - supports high-density routing and automated reflow 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; accepts reverse bias for Zener operation
2	Anode	Connected to ground or lower-potential rail; completes bias path for breakdown conduction

Key Features

Feature	Design Value
±2 % Zener voltage tolerance	Enables accurate 2.7 V reference without post-production trimming in low-power sensor signal chains
Hard breakdown knee	Ensures sharp, predictable turn-on at rated voltage - critical for reliable overvoltage clamping in ADC input protection
Low reverse leakage (20 µA @ 1 V)	Minimizes standby current in battery-backed real-time clocks and low-power microcontroller reset circuits
Non-repetitive surge rating: 40 W	Withstands transient ESD or inductive kick events (100 µs) without degradation in industrial I/O protection
SOD323 footprint compatibility	Matches JEDEC-standard land pattern for drop-in replacement and automated optical inspection (AOI) support

Applications

Industrial Sensor Signal Conditioning

Microcontroller Reset Circuitry

Use Scenario: Stabilizing reference voltage for bridge sensor amplifiers in 3.3 V systems.

IC Role / Device Role / Timing Role: Provides 2.7 V precision reference to op-amp bias network and ADC reference divider.

Use Value: ±2 % tolerance and −2.0 mV/K TC minimize offset drift across −40 °C to +85 °C operating range.

Use Scenario: Generating clean, noise-immune reset threshold for ARM Cortex-M0+ MCUs.

IC Role / Device Role / Timing Role: Acts as voltage-sensing element in RC-based reset generator with hysteresis.

Use Value: Hard breakdown knee prevents false resets during supply ramp-up; low leakage avoids capacitor discharge delay.

USB-C Port Overvoltage Protection

Low-Power IoT Node Voltage Monitoring

Use Scenario: Clamping VBUS transients during hot-plug events in portable accessories.

IC Role / Device Role / Timing Role: Shunts excess energy above 2.7 V to ground before downstream LDO or USB PHY.

Use Value: 40 W non-repetitive surge rating absorbs 100 µs ESD pulses per IEC 61000-4-2 Level 4 without failure.

Use Scenario: Monitoring coin-cell voltage in BLE beacon firmware to trigger low-battery alerts.

IC Role / Device Role / Timing Role: Serves as comparator input reference in ultra-low-quiescent-current voltage detector.

Use Value: 20 µA max IR at 1 V ensures >10-year battery life in sleep-mode monitoring applications.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX384-B2V7,115	Same SOD323 package and 2.7 V ±2 % rating, but higher typical differential resistance (1200 Ω vs. 1000 Ω max)	Less stable regulation under dynamic load steps; suitable only where <1 % regulation error is acceptable	Select when cost sensitivity outweighs need for lowest possible rdif in precision references
MMSZ4675T1G	2.7 V ±5 % (B series), SOD-123 package (larger: 2.7 × 1.6 mm), 1500 Ω max rdif	Lower density placement; higher thermal resistance (R_th(j-a) ≈ 500 K/W vs. 390 K/W) limits power handling	Choose only if legacy SOD-123 footprint reuse is mandatory and ±5 % tolerance is sufficient

Compared with BZX384-B2V7,115 and MMSZ4675T1G, PZU2.7B1A,115 offers the tightest tolerance, lowest specified dynamic impedance, and smallest footprint - making it optimal for new designs prioritizing accuracy, size, and thermal performance in 2.7 V reference roles.

Availability

PZU2.7B1A,115 is available at Aetrix Electronics and suitable for industrial sensor interfaces, microcontroller reset circuits, USB-C port protection, and low-power IoT voltage monitoring requiring stable component supply and long-term obsolescence management.

Supply support for PZU2.7B1A,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, serving automotive, industrial, and consumer markets with scalable manufacturing and rigorous quality systems.

The PZUxBA series belongs to Nexperia's general-purpose Zener regulator portfolio, engineered specifically for compact, cost-effective voltage reference and clamping in space-constrained, surface-mounted applications - emphasizing tight tolerance, low leakage, and robust surge capability.

FAQ

What is the maximum continuous Zener current for PZU2.7B1A,115 at 25 °C ambient?

At T_amb = 25 °C on a standard FR4 PCB, the total power dissipation limit is 320 mW. With a nominal Zener voltage of 2.7 V, the maximum continuous Zener current is approximately 118 mA (320 mW ÷ 2.7 V). This assumes no additional thermal derating and full compliance with the defined mounting conditions.

Does PZU2.7B1A,115 have automotive qualification?

No. PZU2.7B1A,115 is not AEC-Q200 qualified and is designated for industrial and consumer applications only. Nexperia explicitly states that non-automotive qualified products are unsuitable for safety-critical or life-support systems, and no automotive-grade testing or reliability data is provided for this part.

How is polarity identified on the PZU2.7B1A,115 package?

Polarity is marked by a bar on the cathode end of the SOD323 body. Pin 1 (cathode) is adjacent to the marking bar; Pin 2 (anode) is the opposite terminal. This matches the simplified outline in Figure 9 of the datasheet and standard SOD323 orientation used in PCB footprints.

Can PZU2.7B1A,115 replace PZU2.7BA,115 in existing designs?

Yes - PZU2.7B1A,115 is a direct upgrade from the ±5 % PZU2.7BA,115 variant, sharing identical package, pinout, thermal characteristics, and surge ratings. The only change is improved voltage tolerance (±2 %), which enhances regulation accuracy without requiring layout or schematic modifications.

PZU2.7B1A,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):: 2.7 V

Tolerance:: ±2%

Power - Max:: 320 mW

Impedance (Max) (Zzt):: 100 Ohms

Current - Reverse Leakage @ Vr:: 20 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

PZU2.7B1A,115 FAQ

1.How can I place an order for PZU2.7B1A,115 through Aetrix?

Please submit a Request for Quotation (RFQ) for PZU2.7B1A,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 PZU2.7B1A,115 reliable?

The price and inventory of PZU2.7B1A,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU2.7B1A,115 is usually 5 days.

3.What payment methods are accepted for PZU2.7B1A,115?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU2.7B1A,115 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PZU2.7B1A,115?

PZU2.7B1A,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PZU2.7B1A,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 PZU2.7B1A,115?

For technical support, including PZU2.7B1A,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU2.7B1A,115 requirements.

6.How does Aetrix verify that PZU2.7B1A,115 is sourced from the original manufacturer or authorized distributors?

All PZU2.7B1A,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 PZU2.7B1A,115 meets industry standards.

7.What is the process for return or replacement of PZU2.7B1A,115?

All PZU2.7B1A,115 units undergo pre-shipment inspection (PSI). If there is an issue with PZU2.7B1A,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 PZU2.7B1A,115 part is unused and in its original packaging.

Return procedure for PZU2.7B1A,115:

1.Submit a request within 90 days.

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

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