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

Nexperia USA Inc. BZX84-B2V7/DG/B3,2

Name: BZX84-B2V7/DG/B3,2
Brand: Nexperia USA Inc.
SKU: BZX84-B2V7/DG/B3,2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX84-B2V7/DG/B3,2

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: BZX84-B2V7/DG/B3,2.pdf

Description:: DIODE ZENER 2.7V 250MW TO236AB

Quantity:: RFQ Add To RFQ list

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Inventory:3,681

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Product details

Overview

BZX84-B2V7/DG/B3,2 from Nexperia is a 2.7 V, 250 mW silicon planar Zener diode in SOT23 package, with ±5% tolerance, 90 Ω dynamic impedance at 5 mA, and 100 nA reverse leakage at 1 V, used for voltage regulation and reference in low-power analog circuits.

For engineers reviewing the BZX84-B2V7/DG/B3,2 datasheet, BZX84-B2V7/DG/B3,2 pinout, BZX84-B2V7/DG/B3,2 application, or BZX84-B2V7/DG/B3,2 equivalent, key selection criteria include Zener voltage accuracy, power dissipation limit, dynamic impedance at operating current, reverse leakage under bias, and SOT23 thermal performance in space-constrained PCB layouts.

Technical Context

This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals when biased above its nominal Zener voltage. It is designed for low-current regulation (≤20 mA) and precision reference use where tight voltage tolerance and low dynamic impedance are required.

The device uses planar epitaxial process technology for consistent breakdown characteristics and long-term stability. Its SOT23 package supports surface-mount reflow assembly and provides adequate thermal dissipation for ≤250 mW continuous operation at ambient temperatures up to 60 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	2.7 V ±5% - defines regulated output voltage at test current of 5 mA
Power Dissipation (P_tot)	250 mW - maximum continuous power handling in SOT23 at T_amb ≤ 60 °C
Dynamic Impedance (Z_Z)	90 Ω at I_Z = 5 mA - determines voltage regulation sensitivity to load current changes
Reverse Leakage (I_R)	100 nA at V_R = 1 V - ensures minimal parasitic current draw in standby or high-impedance bias networks
Test Current (I_ZT)	5 mA - standardized condition for specifying V_Z and Z_Z, used in design validation
Package	SOT23 - 3-pin surface-mount package with standard footprint and thermal pad layout

Pinout & Package

SOT23 package with cathode-marked lead configuration: Pin 1 = Anode, Pin 2 = Cathode, Pin 3 = Not connected (NC). The cathode stripe identifies the polarity for correct orientation during PCB placement.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1	Anode	Connected to lower potential node; reverse-biased relative to cathode during regulation
Pin 2	Cathode	Connected to higher potential node; carries regulated output voltage referenced to anode
Pin 3	NC	No internal connection; electrically isolated and must remain unconnected in circuit

Key Features

Feature	Design Value
Tight Zener voltage tolerance	±5% at 5 mA enables accurate low-voltage reference without post-calibration
Low dynamic impedance	90 Ω improves load regulation error to <15 mV per 1 mA load step
Low reverse leakage	100 nA at 1 V minimizes quiescent current in battery-powered sensor bias networks
SOT23 package compatibility	Standard footprint allows drop-in replacement in existing 3-pin Zener layouts

Applications

Portable Sensor Biasing

USB Interface Voltage Clamp

Use Scenario: Providing stable 2.7 V reference for analog front-end of MEMS temperature/humidity sensors in wearables.

IC Role / Device Role / Timing Role: Zener voltage reference establishing precise bias point for op-amp input stages and ADC reference dividers.

Use Value: Enables sub-1% measurement accuracy over 0–60 °C by minimizing reference drift and noise coupling.

Use Scenario: Clamping USB D+ line to prevent overvoltage during hot-plug transients in embedded host controllers.

IC Role / Device Role / Timing Role: Low-capacitance shunt clamp limiting signal swing to safe logic levels while preserving signal integrity.

Use Value: Prevents ESD-induced latch-up in USB PHY without adding series resistance that degrades rise/fall times.

Low-Power MCU Reset Circuit

Industrial IO Module Reference

Use Scenario: Generating clean 2.7 V threshold for reset supervisor ICs in battery-backed microcontrollers.

IC Role / Device Role / Timing Role: Precision voltage threshold element triggering reset assertion when supply drops below brown-out level.

Use Value: Ensures deterministic reset behavior down to 2.55 V supply, avoiding spurious resets during battery discharge.

Use Scenario: Supplying stable 2.7 V reference for 12-bit DACs in 4–20 mA loop-powered field transmitters.

IC Role / Device Role / Timing Role: Low-drift voltage reference source for current-loop output scaling and calibration offset trimming.

Use Value: Maintains ≤0.5 LSB INL error over 10-year field life due to low long-term Zener voltage drift.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MMSZ4675-7-F	2.7 V ±5%, 500 mW rating, 100 Ω Z_Z at 20 mA	Higher power handling supports >10 mA regulation current; larger SOD-123 package	Preferred when sustained current exceeds 15 mA or board layout allows larger footprint
BZX84-C2V7,215	2.7 V ±5%, 350 mW rating, 100 Ω Z_Z at 5 mA, same SOT23 package	Higher P_tot enables greater thermal margin in compact enclosures	Drop-in upgrade for improved reliability in thermally constrained designs

Compared with BZX84-B2V7/DG/B3,2, MMSZ4675-7-F offers higher power but requires SOD-123 layout change, while BZX84-C2V7,215 delivers identical electrical performance with enhanced thermal headroom in the same SOT23 footprint.

Availability

BZX84-B2V7/DG/B3,2 is available at Aetrix Electronics and suitable for portable sensor biasing, USB interface clamping, and low-power MCU reset circuits requiring stable component supply and consistent Zener voltage performance across production lots.

Supply support for BZX84-B2V7/DG/B3,2 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 for automotive, industrial, and consumer applications.

The BZX84 series belongs to Nexperia's precision Zener diode product line, engineered for stable voltage reference and regulation in space-constrained, low-power analog systems.

FAQ

What is the maximum continuous reverse current this Zener diode can handle?

The BZX84-B2V7/DG/B3,2 is rated for 250 mW total power dissipation. At its 2.7 V Zener voltage, this corresponds to a maximum continuous reverse current of approximately 93 mA (250 mW ÷ 2.7 V), assuming no ambient temperature derating. Actual usable current is limited to ≤20 mA in typical PCB layouts to maintain stability and avoid thermal runaway.

Can this part be used in place of a 3.3 V Zener diode?

No - the BZX84-B2V7/DG/B3,2 has a nominal Zener voltage of 2.7 V ±5%, not 3.3 V. Substituting it for a 3.3 V device would result in incorrect regulation, potentially causing system malfunction or undervoltage lockout. A dedicated 3.3 V Zener such as BZX84-B3V3/DG/B3,2 must be selected instead.

Is the SOT23 package lead-free and RoHS compliant?

Yes - the BZX84-B2V7/DG/B3,2 is manufactured using lead-free solderable terminations and complies with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Full compliance documentation is available in Nexperia's official product declaration files.

How does dynamic impedance affect regulation accuracy in real circuits?

Dynamic impedance (90 Ω at 5 mA) directly determines how much the Zener voltage shifts with load current changes. For example, a 1 mA variation in cathode current causes ~90 mV output shift - critical in precision references. Designers must limit current excursions or add buffering to maintain regulation accuracy within required tolerances.

BZX84-B2V7/DG/B3,2 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Voltage - Zener (Nom) (Vz):: 2.7 V

Tolerance:: ±2%

Power - Max:: 250 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:: TO-236AB

BZX84-B2V7/DG/B3,2 FAQ

1.How can I place an order for BZX84-B2V7/DG/B3,2 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX84-B2V7/DG/B3,2 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 BZX84-B2V7/DG/B3,2 reliable?

The price and inventory of BZX84-B2V7/DG/B3,2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-B2V7/DG/B3,2 is usually 5 days.

3.What payment methods are accepted for BZX84-B2V7/DG/B3,2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-B2V7/DG/B3,2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX84-B2V7/DG/B3,2?

BZX84-B2V7/DG/B3,2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX84-B2V7/DG/B3,2 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 BZX84-B2V7/DG/B3,2?

For technical support, including BZX84-B2V7/DG/B3,2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-B2V7/DG/B3,2 requirements.

6.How does Aetrix verify that BZX84-B2V7/DG/B3,2 is sourced from the original manufacturer or authorized distributors?

All BZX84-B2V7/DG/B3,2 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 BZX84-B2V7/DG/B3,2 meets industry standards.

7.What is the process for return or replacement of BZX84-B2V7/DG/B3,2?

All BZX84-B2V7/DG/B3,2 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-B2V7/DG/B3,2, 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 BZX84-B2V7/DG/B3,2 part is unused and in its original packaging.

Return procedure for BZX84-B2V7/DG/B3,2:

1.Submit a request within 90 days.

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

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