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

Nexperia USA Inc. BZX384-C5V1,115

Name: BZX384-C5V1,115
Brand: Nexperia USA Inc.
SKU: BZX384-C5V1,115
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX384-C5V1,115

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

Package:: SC-76, SOD-323

Datasheet:: BZX384-C5V1,115.pdf

Description:: DIODE ZENER 5.1V 300MW SOD323

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Product details

Overview

BZX384-C5V1,115 from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 5.1 V nominal breakdown at 5 mA, with 480 Ω max differential resistance and 2 µA reverse current at 3.8 V. It delivers stable reference voltage in low-power analog circuits, power supply feedback loops, and overvoltage protection in consumer and industrial electronics.

For engineers reviewing the BZX384-C5V1,115 datasheet, BZX384-C5V1,115 pinout, BZX384-C5V1,115 application, or BZX384-C5V1,115 equivalent, key selection criteria include its ±5 % tolerance, 300 mW total power dissipation, 5.1 V Zener voltage with -2.7 to +1.2 mV/K temperature coefficient, and SOD323 thermal resistance of 110 K/W to solder point.

Technical Context

This Zener diode operates in reverse-biased breakdown mode to maintain a stable reference voltage across its terminals under varying load and temperature conditions. Its design targets precision regulation in space-constrained PCB layouts where low-profile surface-mount devices are required.

The device exhibits a non-repetitive peak reverse power dissipation of 40 W for 100 µs pulses and supports forward conduction up to 250 mA. Junction-to-solder-point thermal resistance is 110 K/W, enabling reliable operation on standard FR4 PCBs with single-sided copper.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	4.80 V to 5.40 V at I_Z = 5 mA - defines usable regulation band for 5.1 V nominal reference
Differential Resistance (r_dif)	≤480 Ω - determines output impedance and voltage deviation under load changes
Reverse Current (I_R)	≤2 µA at V_R = 3.8 V - ensures minimal leakage in standby or high-impedance sensing nodes
Total Power Dissipation (P_tot)	300 mW at T_amb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 PCB
Temperature Coefficient (S_Z)	-2.7 to +1.2 mV/K - quantifies voltage drift per degree Celsius over operating range
Forward Voltage (V_F)	0.9 V at I_F = 10 mA - specifies conduction loss when used in forward-biased clamp or ESD path
Non-repetitive Peak Reverse Power	40 W for t_p = 100 µs - enables transient surge suppression without permanent damage

Pinout & Package

SOD323 (SC-76) plastic surface-mounted package: 2-terminal, small-outline diode with cathode-marked end bar; dimensions 1.8 mm × 1.35 mm × 0.95 mm; optimized for reflow and wave soldering per IPC-7351B footprint.

Pin/Terminal	Circuit Role	Design Meaning
1	Cathode (K)	Connected to regulated output node; marking bar identifies this terminal for correct PCB orientation
2	Anode (A)	Connected to ground or lower-potential rail; forms reverse-bias path during regulation

Key Features

Feature	Design Value
±5 % Zener voltage tolerance	Enables cost-effective voltage referencing where tight regulation is not critical, such as signal-level clamping or coarse supply monitoring
300 mW power rating	Supports continuous operation in low-current bias networks and feedback dividers without heatsinking
SOD323 package footprint	Reduces board area by >50 % vs. DO-35; compatible with high-density automated assembly and reflow profiles
150 °C maximum junction temperature	Permits reliable operation in enclosed industrial enclosures or near heat-generating components
40 W non-repetitive surge capability	Provides transient overvoltage immunity in unregulated input stages without external TVS coordination

Applications

Power Supply Feedback

Signal-Level Clamping

Use Scenario: Used in the optocoupler feedback path of isolated AC/DC adapters to regulate 5 V output.

IC Role / Device Role / Timing Role: Zener reference establishes precise error amplifier threshold; replaces bulkier TL431-based solutions in cost-sensitive designs.

Use Value: Delivers ±5 % output accuracy while reducing component count and PCB footprint versus three-terminal shunt regulators.

Use Scenario: Placed across microcontroller GPIO pins to limit input voltage to safe levels during hot-plug events.

IC Role / Device Role / Timing Role: Acts as bidirectional clamp-forward conducts at ~0.9 V, reverse regulates at 5.1 V-to protect against ESD and overvoltage transients.

Use Value: Provides sub-100 ns response to fast transients without requiring external series resistance or dedicated TVS arrays.

Reference Voltage Source

Overvoltage Detection

Use Scenario: Supplies stable 5.1 V reference to ADC voltage divider in battery-powered sensor nodes.

IC Role / Device Role / Timing Role: Functions as passive voltage reference for ratiometric measurements; low 2 µA leakage preserves battery life.

Use Value: Enables <1 % measurement error over -40 °C to +85 °C due to predictable -2.7 to +1.2 mV/K temperature coefficient.

Use Scenario: Integrated into comparator input stage to trigger shutdown when input exceeds 5.4 V in USB-C PD receivers.

IC Role / Device Role / Timing Role: Sets precise trip threshold via reverse breakdown; differential resistance <480 Ω ensures minimal hysteresis-induced error.

Use Value: Achieves ±0.3 V trip accuracy across production lots without trimming, reducing calibration steps in manufacturing.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MMBZ5222BS-7-F	Same 5.1 V nominal, ±5 % tolerance, but SOT-23 package; 500 mW P_tot; higher thermal resistance (200 K/W j-a)	Requires larger PCB footprint; better suited for higher-power bias networks where SOT-23 thermal margin is needed	Select when board layout allows SOT-23 and >300 mW dissipation is required
BZX384-B5V1,115	Same SOD323 package and 5.1 V nominal, but ±2 % tolerance; 400 Ω max r_dif; tighter -2.0 to +2.5 mV/K S_Z	Delivers improved regulation accuracy and lower tempco drift, at higher unit cost	Select when system-level voltage stability demands <±2 % tolerance and reduced thermal drift

Compared with BZX384-C5V1,115, MMBZ5222BS-7-F offers higher power headroom but sacrifices board-area efficiency, while BZX384-B5V1,115 improves regulation precision at the expense of tighter process control and cost-making the C-grade optimal for cost-sensitive, space-constrained general-purpose regulation.

Availability

BZX384-C5V1,115 is available at Aetrix Electronics and suitable for power supply feedback, signal-level clamping, reference voltage sourcing, and overvoltage detection requiring stable component supply across high-mix, low-volume production runs.

Supply support for BZX384-C5V1,115 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 essential semiconductors for automotive, industrial, mobile, and computing markets, delivering high-performance, reliable, and efficient components.

The BZX384 series belongs to Nexperia's precision Zener diode product line, engineered specifically for compact, low-power voltage regulation and reference applications in consumer, industrial, and communication equipment.

FAQ

What is the maximum continuous reverse current the BZX384-C5V1,115 can sustain at 25 °C ambient?

The device is rated for continuous Zener current up to 60 mA at 25 °C ambient, derived from its 300 mW power limit and 5.1 V nominal Zener voltage (P = V × I → I = 300 mW / 5.1 V ≈ 59 mA). Operation beyond this requires derating per the thermal resistance curve in the datasheet.

Does the BZX384-C5V1,115 meet automotive qualification standards?

No. This part is explicitly marked as non-automotive qualified in the revision history (Rev. 4, January 2023), and Nexperia states that automotive alternatives must be selected from the -Q qualified series. It is intended for industrial, consumer, and computing applications only.

How does the SOD323 package affect thermal performance compared to larger diode packages?

The SOD323 package has a junction-to-solder-point thermal resistance of 110 K/W, significantly lower than junction-to-ambient (415 K/W), meaning effective heat transfer relies on proper PCB copper pour under the cathode pad. Larger packages like DO-35 offer lower R_th(j-a) but require more board area and manual assembly compatibility.

Can the BZX384-C5V1,115 be used in forward conduction mode for ESD protection?

Yes. With a forward voltage of 0.9 V at 10 mA and 1.1 V at 100 mA, it functions as a low-threshold forward clamp. However, its 250 mA absolute maximum forward current limits use to low-energy ESD events (e.g., IEC 61000-4-2 Level 2); for robust system-level ESD, dedicated TVS diodes are recommended.

BZX384-C5V1,115 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: BZX384

Package/Case:: SC-76, SOD-323

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 5.1 V

Tolerance:: ±5%

Power - Max:: 300 mW

Impedance (Max) (Zzt):: 60 Ohms

Current - Reverse Leakage @ Vr:: 2 µA @ 2 V

Voltage - Forward (Vf) (Max) @ If:: 1.1 V @ 100 mA

Operating Temperature:: -65°C ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-323

BZX384-C5V1,115 FAQ

1.How can I place an order for BZX384-C5V1,115 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX384-C5V1,115 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 BZX384-C5V1,115 reliable?

The price and inventory of BZX384-C5V1,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-C5V1,115 is usually 5 days.

3.What payment methods are accepted for BZX384-C5V1,115?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-C5V1,115 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX384-C5V1,115?

BZX384-C5V1,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX384-C5V1,115 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 BZX384-C5V1,115?

For technical support, including BZX384-C5V1,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-C5V1,115 requirements.

6.How does Aetrix verify that BZX384-C5V1,115 is sourced from the original manufacturer or authorized distributors?

All BZX384-C5V1,115 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 BZX384-C5V1,115 meets industry standards.

7.What is the process for return or replacement of BZX384-C5V1,115?

All BZX384-C5V1,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-C5V1,115, 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 BZX384-C5V1,115 part is unused and in its original packaging.

Return procedure for BZX384-C5V1,115:

1.Submit a request within 90 days.

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

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