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

Diodes Incorporated BZX84B15-7-F

Name: BZX84B15-7-F
Brand: Diodes Incorporated
SKU: BZX84B15-7-F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX84B15-7-F

Manufacturer:: Diodes Incorporated

Category:: Single Zener Diodes

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: BZX84B15-7-F.pdf

Description:: DIODE ZENER 15V 300MW SOT23

Quantity:: RFQ Add To RFQ list

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Inventory:20,826

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Product details

Overview

BZX84B15-7-F from Diodes Incorporated is a precision 15 V ±2% tolerance Zener diode in SOT23 package, rated for 350 mW power dissipation at ambient temperature, with 30 Ω maximum Zener impedance at 5 mA test current and 9.2 mV/°C temperature coefficient - used for voltage regulation and reference in low-power analog circuits.

For engineers reviewing the BZX84B15-7-F datasheet, BZX84B15-7-F pinout, BZX84B15-7-F application, or BZX84B15-7-F equivalent, key selection criteria include tight Zener voltage tolerance (±2%), low dynamic impedance (30 Ω @ 5 mA), AEC-Q101 qualification for automotive use, and SOT23 compatibility with high-speed pick-and-place assembly.

Technical Context

This Zener diode operates in reverse breakdown to maintain stable voltage across load variations and supply fluctuations. It delivers precise regulation at I_ZT = 5 mA with nominal V_Z = 15.0 V, minimum 14.7 V and maximum 15.3 V, and exhibits a positive temperature coefficient of +9.2 mV/°C above 6 V.

Thermal resistance is 357 °C/W when terminals are held at ambient temperature, enabling reliable operation up to +150 °C junction temperature. Reverse leakage remains ≤0.1 µA at 10.5 V, ensuring minimal quiescent current in standby mode.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	15.0 V nominal, 14.7–15.3 V range at 5 mA - ensures ±2% regulation accuracy under standard test conditions.
Power Dissipation	350 mW at ambient temperature - supports continuous operation without forced cooling on standard FR-4 PCBs.
Zener Impedance (Z_ZT)	30 Ω max @ 5 mA - enables low output impedance for stable reference in feedback loops and voltage monitors.
Temperature Coefficient	+9.2 mV/°C - provides predictable V_Z drift over temperature, critical for precision analog references.
Reverse Leakage (I_R)	≤0.1 µA @ 10.5 V - minimizes standby current in battery-powered voltage clamp and protection circuits.
Package	SOT23 - surface-mount footprint compatible with automated assembly and space-constrained PCB layouts.
AEC-Q101 Qualified	Yes - validated for automotive-grade reliability including temperature cycling, HAST, and mechanical stress testing.

Pinout & Package

Package: SOT23 - three-terminal plastic-molded case with matte tin-plated alloy 42 leadframe; polarity indicated by cathode band on top view; weight ≈ 0.008 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Pin 1)	Forward conduction terminal	Connected to lower potential side during normal Zener operation; forms cathode-anode junction for reverse-biased regulation.
Cathode (Pin 2)	Zener breakdown terminal	Connected to higher potential side; defines regulated output node in shunt regulator configurations.
No-Connect / Heat Sink (Pin 3)	Internal die attach pad	Electrically isolated but thermally coupled to junction; improves thermal dissipation when soldered to copper pour.

Key Features

Feature	Design Value
±2% Zener voltage tolerance	Reduces need for post-production trimming in voltage reference designs, improving yield and consistency.
AEC-Q101 qualification	Validates suitability for automotive body control modules, infotainment power rails, and sensor interface circuits.
350 mW power rating at ambient	Enables direct replacement of legacy 400 mW through-hole Zeners while maintaining board-level thermal margin.
Halogen- and antimony-free "Green" construction	Meets IPC-1752A material declaration requirements and supports RoHS 3 (2015/863/EU) compliance reporting.
SOT23 tape-and-reel packaging (3000 pcs)	Optimized for high-throughput SMT lines with JEDEC-standard carrier tape geometry and optical fiducial alignment.

Applications

Automotive Sensor Reference

Industrial Power Monitor

Use Scenario: Providing stable 15 V reference for analog-to-digital conversion of engine coolant temperature signals in ECU subsystems.

IC Role / Device Role / Timing Role: Shunt voltage reference for ADC input scaling and biasing of op-amp signal conditioning stages.

Use Value: ±2% V_Z tolerance and AEC-Q101 qualification ensure consistent measurement accuracy across -40°C to +125°C operating range.

Use Scenario: Clamping and regulating auxiliary 15 V rail in programmable logic controller (PLC) I/O module power stage.

IC Role / Device Role / Timing Role: Overvoltage protection element and precision voltage setpoint for linear regulator feedback network.

Use Value: 30 Ω Zener impedance maintains regulation stability under dynamic load transients up to 10 mA step change.

Medical Wearable Battery Monitor

Consumer IoT Voltage Supervisor

Use Scenario: Monitoring lithium-polymer cell voltage via resistive divider into microcontroller ADC in compact health trackers.

IC Role / Device Role / Timing Role: Low-leakage (≤0.1 µA) Zener clamp protecting MCU input pins from overvoltage during charging cycles.

Use Value: Ultra-low IR enables >10-year battery life in always-on monitoring mode without compromising protection integrity.

Use Scenario: Enabling brown-out detection and reset assertion in Wi-Fi-enabled smart home sensors powered from 12–18 V wall adapters.

IC Role / Device Role / Timing Role: Precision threshold element in comparator-based supervisor circuit with 15 V trip point.

Use Value: +9.2 mV/°C tempco allows predictable trip-point shift across operating temperature, simplifying calibration.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MMSZ5245B-7-F	Same 15 V nominal, but ±5% tolerance and 500 mW rating; no AEC-Q101 qualification.	Acceptable for non-automotive industrial controls where tighter tolerance is not required.	Select when cost sensitivity outweighs precision and automotive reliability needs.
BZX84-C15	Same SOT23 package and 15 V rating, but ±5% tolerance and no AEC-Q101 qualification.	Suitable for consumer electronics where regulatory compliance is limited to RoHS only.	Choose for legacy design refreshes where footprint compatibility is prioritized over performance upgrades.

Compared with MMSZ5245B-7-F and BZX84-C15, BZX84B15-7-F delivers superior voltage accuracy (±2% vs. ±5%), guaranteed automotive qualification, and lower Zener impedance - making it optimal for safety-critical or high-precision reference roles.

Availability

BZX84B15-7-F is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial power monitors, medical wearable battery supervisors, and consumer IoT voltage supervisors requiring stable component supply and long-term lifecycle support.

Supply support for BZX84B15-7-F 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and distribution operations across Asia, Europe, and the Americas.

BZX84B series belongs to Diodes' precision Zener diode product line, engineered specifically for high-reliability voltage regulation and reference applications in automotive, industrial, and medical systems where tight tolerance and AEC-Q101 validation are mandatory.

FAQ

What is the maximum reverse leakage current for BZX84B15-7-F at 10.5 V?

The maximum reverse leakage current (I_R) is 0.1 µA at V_R = 10.5 V and T_A = +25°C, as specified in the Electrical Characteristics table. This ultra-low leakage supports energy-efficient operation in battery-powered applications where standby current must be minimized.

Is BZX84B15-7-F suitable for automotive applications?

Yes - BZX84B15-7-F is explicitly qualified to AEC-Q101 standards, covering stress tests including temperature cycling, high-accelerated temperature/humidity stress, and mechanical shock. Its SOT23 package and ±2% tolerance meet requirements for engine control units and ADAS sensor interfaces.

How does the temperature coefficient affect regulation accuracy over temperature?

With a +9.2 mV/°C temperature coefficient, V_Z increases by approximately 0.92 V over a 100°C rise (e.g., from 25°C to 125°C). This predictable drift allows system-level compensation in precision references and must be accounted for in wide-temperature-range designs.

What is the difference between BZX84B15-7-F and BZX84B15-13-F?

BZX84B15-7-F is supplied in 3000-piece tape-and-reel packaging, while BZX84B15-13-F uses 10,000-piece tape-and-reel. Both share identical electrical specifications, AEC-Q101 qualification, and SOT23 package - differing only in quantity per reel for procurement flexibility.

BZX84B15-7-F Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 15 V

Tolerance:: ±2%

Power - Max:: 300 mW

Impedance (Max) (Zzt):: 30 Ohms

Current - Reverse Leakage @ Vr:: 100 nA @ 10.5 V

Voltage - Forward (Vf) (Max) @ If:: 900 mV @ 10 mA

Operating Temperature:: -65°C ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

BZX84B15-7-F FAQ

1.How can I place an order for BZX84B15-7-F through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX84B15-7-F 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 BZX84B15-7-F reliable?

The price and inventory of BZX84B15-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84B15-7-F is usually 5 days.

3.What payment methods are accepted for BZX84B15-7-F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84B15-7-F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX84B15-7-F?

BZX84B15-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX84B15-7-F 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 BZX84B15-7-F?

For technical support, including BZX84B15-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84B15-7-F requirements.

6.How does Aetrix verify that BZX84B15-7-F is sourced from the original manufacturer or authorized distributors?

All BZX84B15-7-F 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 BZX84B15-7-F meets industry standards.

7.What is the process for return or replacement of BZX84B15-7-F?

All BZX84B15-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84B15-7-F, 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 BZX84B15-7-F part is unused and in its original packaging.

Return procedure for BZX84B15-7-F:

1.Submit a request within 90 days.

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

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