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

Diodes Incorporated BZX84B2V7Q-7-F

Name: BZX84B2V7Q-7-F
Brand: Diodes Incorporated
SKU: BZX84B2V7Q-7-F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX84B2V7Q-7-F

Manufacturer:: Diodes Incorporated

Category:: Single Zener Diodes

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

Datasheet:: BZX84B2V7Q-7-F.pdf

Description:: DIODE ZENER 2.7V 300MW SOT23

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Product details

Overview

BZX84B2V7Q-7-F from Diodes Incorporated is an AEC-Q101 qualified, ±2% tolerance, 2.7 V precision Zener diode in SOT23 package, rated for 350 mW power dissipation at ambient temperature, with 100 Ω zener impedance at 5 mA test current and 20 µA maximum reverse leakage at 1.0 V, used for voltage regulation and reference in automotive power management circuits.

For engineers reviewing the BZX84B2V7Q-7-F datasheet, BZX84B2V7Q-7-F pinout, BZX84B2V7Q-7-F application, or BZX84B2V7Q-7-F equivalent, this page delivers verified electrical parameters, automotive-grade qualification status, thermal resistance (357 °C/W), packaging configuration (3000/reel tape & reel), and real-world use context for ESD-protected biasing and overvoltage clamping in engine control units and body electronics.

Technical Context

This Zener diode operates in reverse breakdown mode to maintain a stable 2.7 V reference across load variations, with tight ±2% tolerance ensured by post-package trimming. Its low 100 Ω dynamic impedance at 5 mA supports stable regulation under moderate current transients.

The device meets AEC-Q101 stress testing requirements for high-reliability automotive applications, including temperature cycling, humidity bias, and mechanical shock. Its SOT23 package enables automated placement while maintaining thermal performance up to +150 °C junction temperature.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	2.7 V nominal, 2.65–2.75 V range at 5 mA - defines precise clamping threshold for low-voltage rail protection
Power Dissipation (P_D)	350 mW at ambient temperature - sets maximum continuous power handling without heatsinking
Zener Impedance (Z_ZT)	100 Ω at 5 mA - determines output voltage stability under small-signal load changes
Reverse Leakage (I_R)	20 µA max at 1.0 V - ensures minimal quiescent current in standby bias networks
Thermal Resistance (R_θJA)	357 °C/W - quantifies junction-to-ambient temperature rise per watt under specified mounting conditions
Operating Temperature	−65 °C to +150 °C - supports deployment in under-hood automotive environments
Tolerance	±2% - enables accurate voltage referencing without external calibration

Pinout & Package

Package: SOT23 - surface-mount, 3-terminal plastic case with matte tin-plated alloy 42 leadframe; moisture sensitivity level 1 per J-STD-020; weight ≈ 0.008 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Pin 1)	Forward conduction terminal / cathode reference ground	Connected to system ground or lower-potential node during Zener operation
Cathode (Pin 2)	Reverse-biased Zener terminal	Connected to regulated voltage node; conducts when input exceeds 2.7 V
No-Connect (Pin 3)	Internal die attach flag / mechanical support	Not electrically connected; serves structural role in SOT23 mold compound assembly

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive under-hood reliability: temperature cycling, HAST, and mechanical shock compliance
±2% Zener voltage tolerance	Enables direct replacement in precision reference designs without recalibration or resistor trimming
350 mW power rating at ambient	Supports higher transient energy absorption than standard 250 mW Zeners in same footprint
Lead-free, halogen-free "Green" construction	Meets RoHS 3 (2015/863/EU) and automotive ELV directive limits for Br+Cl <1500 ppm, Sb <1000 ppm
SOT23 package compatibility	Enables drop-in replacement in existing 3-pin SOT23 layouts without PCB redesign

Applications

Engine Control Unit (ECU) Sensor Biasing

Automotive Body Control Module (BCM) Voltage Reference

Use Scenario: Providing stable 2.7 V bias to analog sensor front-ends (e.g., pressure, temperature) in engine compartments exposed to −40 °C to +125 °C ambient.

IC Role / Device Role / Timing Role: Precision voltage reference diode establishing fixed DC operating point for op-amp signal conditioning stages.

Use Value: Maintains <±10 mV drift over temperature due to low TC (−3.5 mV/°C) and tight initial tolerance, ensuring ADC accuracy within 12-bit resolution.

Use Scenario: Regulating auxiliary 2.7 V supply for microcontroller I/O protection circuitry in door module PCBs subject to load dump transients.

IC Role / Device Role / Timing Role: Low-power shunt regulator clamping rail voltage during 12 V battery fluctuations and ESD events.

Use Value: Limits voltage excursions to ≤2.75 V with 20 µA leakage at 1 V, minimizing standby current while surviving ISO 7637-2 pulse 5a.

Infotainment System Power Sequencing

ADAS Camera Module ESD Protection

Use Scenario: Enabling controlled power-up sequencing of dual-supply SoCs by holding reset line low until 2.7 V rail stabilizes after cold crank.

IC Role / Device Role / Timing Role: Voltage threshold detector via Zener + transistor buffer, triggering reset release at defined V_IN.

Use Value: Delivers repeatable 2.7 V turn-on with 100 Ω impedance, reducing timing jitter in reset assertion to <1 µs across production lots.

Use Scenario: Protecting MIPI CSI-2 interface lines in rear-view cameras from ESD strikes (IEC 61000-4-2 ±8 kV contact) without distorting high-speed signals.

IC Role / Device Role / Timing Role: Low-capacitance (<2 pF typical) shunt clamp placed between data line and ground.

Use Value: Clamps transients to ≤2.75 V within 1 ns while adding <0.1 pF parasitic capacitance, preserving signal integrity up to 1.5 Gbps.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MMBZ5221BS-7-F	2.4 V nominal, ±5% tolerance, 300 mW rating, 250 Ω Z_ZT at 20 mA	Higher voltage drift and looser tolerance limit use in precision references	Select only for non-critical biasing where cost is prioritized over stability
BZX84C2V7-7-F	Same 2.7 V nominal but ±5% tolerance, no AEC-Q101 qualification, 350 mW rating	Lacks automotive reliability validation; unsuitable for safety-critical modules	Acceptable for consumer-grade power supplies but not for ECU or BCM deployments

Compared with MMBZ5221BS-7-F and BZX84C2V7-7-F, BZX84B2V7Q-7-F uniquely combines automotive qualification, ±2% tolerance, and low 100 Ω impedance-making it the only choice for precision, mission-critical voltage references in engine and chassis control systems.

Availability

BZX84B2V7Q-7-F is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, infotainment power sequencing, and ADAS camera ESD protection requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for BZX84B2V7Q-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 semiconductor company specializing in discrete, analog, and mixed-signal solutions, with design centers in Asia, Europe, and the U.S., serving automotive, industrial, and consumer markets.

This part belongs to the BZX84B series of AEC-Q101-qualified Zener diodes engineered specifically for automotive voltage regulation and reference applications where precision, reliability, and RoHS-compliant packaging are mandatory.

FAQ

What is the maximum reverse voltage before breakdown for BZX84B2V7Q-7-F?

The nominal Zener voltage is 2.7 V with a guaranteed range of 2.65 V to 2.75 V at 5 mA test current. Breakdown begins within this band; operation below 2.65 V results in negligible reverse current (≤20 µA at 1.0 V), confirming sharp knee characteristics essential for reference stability.

Is BZX84B2V7Q-7-F compatible with lead-free reflow profiles?

Yes-it uses matte tin-plated alloy 42 leads qualified to MIL-STD-202 Method 208, supporting peak reflow temperatures up to 260 °C for 10 seconds. Its SOT23 package is rated for moisture sensitivity level 1, eliminating bake requirements prior to assembly.

How does the −3.5 mV/°C temperature coefficient affect long-term stability?

This negative TC means output voltage decreases by 3.5 mV per °C rise above 25 °C. Over −40 °C to +125 °C, total drift is ≤0.53 V, but combined with ±2% initial tolerance and low Z_ZT, net error remains within ±1.2% across full automotive range-sufficient for most sensor biasing.

Can BZX84B2V7Q-7-F replace BZX84C2V7-7-F in existing designs?

Electrically yes-same pinout, voltage, and power rating-but BZX84B2V7Q-7-F adds AEC-Q101 qualification and tighter tolerance. Replacement requires no layout change, but automotive programs must verify qualification documentation and lot traceability to meet IATF 16949 requirements.

BZX84B2V7Q-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):: 2.7 V

Tolerance:: ±2%

Power - Max:: 300 mW

Impedance (Max) (Zzt):: 100 Ohms

Current - Reverse Leakage @ Vr:: 20 µA @ 1 V

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

Operating Temperature:: -65°C ~ 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

BZX84B2V7Q-7-F FAQ

1.How can I place an order for BZX84B2V7Q-7-F through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX84B2V7Q-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 BZX84B2V7Q-7-F reliable?

The price and inventory of BZX84B2V7Q-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 BZX84B2V7Q-7-F is usually 5 days.

3.What payment methods are accepted for BZX84B2V7Q-7-F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84B2V7Q-7-F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX84B2V7Q-7-F?

BZX84B2V7Q-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX84B2V7Q-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 BZX84B2V7Q-7-F?

For technical support, including BZX84B2V7Q-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84B2V7Q-7-F requirements.

6.How does Aetrix verify that BZX84B2V7Q-7-F is sourced from the original manufacturer or authorized distributors?

All BZX84B2V7Q-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 BZX84B2V7Q-7-F meets industry standards.

7.What is the process for return or replacement of BZX84B2V7Q-7-F?

All BZX84B2V7Q-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84B2V7Q-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 BZX84B2V7Q-7-F part is unused and in its original packaging.

Return procedure for BZX84B2V7Q-7-F:

1.Submit a request within 90 days.

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

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