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

Nexperia USA Inc. BZX84-B8V2,215

Name: BZX84-B8V2,215
Brand: Nexperia USA Inc.
SKU: BZX84-B8V2,215
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX84-B8V2,215

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: BZX84-B8V2,215.pdf

Description:: DIODE ZENER 8.2V 250MW TO236AB

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Product details

Overview

BZX84-B8V2,215 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, rated for 8.2 V nominal breakdown voltage at 5 mA, 250 mW total power dissipation, and 40 W non-repetitive peak reverse power. It serves as a precision reference or overvoltage clamp in low-power analog supply rails and sensor biasing circuits.

For engineers reviewing the BZX84-B8V2,215 datasheet, BZX84-B8V2,215 pinout, BZX84-B8V2,215 application, or BZX84-B8V2,215 equivalent, key selection criteria include its 8.2 V Zener voltage with ±2 % tolerance, 150 °C maximum junction temperature, 80 Ω typical differential resistance at 5 mA, 0.7 μA max reverse current at 6.6 V, and thermal resistance of 500 K/W (junction-to-ambient).

Technical Context

This Zener diode operates in reverse-biased avalanche mode to maintain stable voltage across its terminals under varying load or input conditions. Its 8.2 V nominal Zener voltage is specified at I_Z = 5 mA with a temperature coefficient of +3.2 mV/K, indicating positive drift with rising temperature.

The device uses silicon planar technology in a three-terminal SOT23 package with Pin 1 (anode), Pin 2 (not connected), and Pin 3 (cathode). Its 250 mW DC power rating applies only when mounted on FR4 PCB with standard footprint and single-sided 70 µm copper.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	8.04 V to 8.36 V at I_Z = 5 mA - defines regulation window for precision biasing
Differential Resistance (r_dif)	80 Ω max at I_Z = 5 mA - determines output impedance and load regulation error
Reverse Current (I_R)	0.7 μA max at V_R = 6.6 V - ensures low leakage in standby or high-impedance sensing nodes
Forward Voltage (V_F)	0.9 V max at I_F = 10 mA - relevant for polarity protection or series forward conduction use cases
Junction Temperature (T_j)	−55 °C to +150 °C - supports operation in industrial ambient environments without derating below 25 °C
Thermal Resistance (R_th(j-a))	500 K/W - requires careful PCB copper area planning for sustained 250 mW dissipation

Pinout & Package

SOT23 (TO-236AB) surface-mount plastic package with 3 leads, 1.9 mm × 1.1 mm body size, and 0.95 mm height; optimized for reflow soldering per IPC-7095 guidelines.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode (A)	Connected to lower-potential node in reverse-bias regulation configuration
2	Not Connected (n.c.)	No internal bond wire; must remain unconnected on PCB to avoid parasitic coupling
3	Cathode (K)	Connected to higher-potential node; carries full Zener current during regulation

Key Features

Feature	Design Value
±2 % Zener voltage tolerance	Enables tighter supply margin control than ±5 % variants in feedback networks
80 Ω max differential resistance	Minimizes output voltage shift under ±1 mA load variation in reference applications
Non-repetitive peak power: 40 W	Supports transient overvoltage clamping (e.g., ESD or inductive kick) with 100 μs pulse width
150 °C max junction temperature	Permits operation in sealed enclosures or near heat-generating components without forced cooling

Applications

Power Supply Reference

Sensor Biasing

Use Scenario: Providing stable 8.2 V reference for ADC voltage dividers in battery-powered IoT nodes.

IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to fix reference potential relative to ground.

Use Value: Delivers <1 % output variation over −40 °C to +85 °C ambient due to low tempco (+3.2 mV/K) and tight ±2 % tolerance.

Use Scenario: Biasing photodiode anodes in optical smoke detectors requiring low-noise, stable reverse voltage.

IC Role / Device Role / Timing Role: Precision voltage source establishing fixed reverse bias across photodiode junction.

Use Value: 0.7 μA max leakage at 6.6 V ensures minimal dark current interference in high-impedance signal paths.

Overvoltage Clamp

Microcontroller Reset Circuit

Use Scenario: Protecting 8-bit MCU I/O pins from 12 V rail transients in automotive body-control modules.

IC Role / Device Role / Timing Role: Shunt element diverting surge current above 8.2 V to ground during load-dump events.

Use Value: Withstands 40 W non-repetitive pulses (100 μs) without degradation, enabling robust transient suppression.

Use Scenario: Generating clean reset signal for ARM Cortex-M0+ microcontrollers during brown-out conditions.

IC Role / Device Role / Timing Role: Threshold detector that triggers reset when V_CC falls below 8.2 V × 0.9 = ~7.4 V.

Use Value: 80 Ω r_dif ensures predictable trip point hysteresis and immunity to supply noise-induced chatter.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor MMBZ5231BS-7-F	8.2 V nominal, ±5 % tolerance, 225 mW P_tot, SOT23 package	Higher voltage tolerance reduces accuracy in precision references but lowers cost	Select when ±5 % regulation window suffices and cost sensitivity outweighs stability requirements
Vishay BZX84-C8V2-TP	8.2 V nominal, ±5 % tolerance, 300 mW P_tot, same SOT23 footprint	Higher power rating allows greater surge handling but looser voltage spec	Prefer for clamping-only roles where 8.2 V ±5 % is acceptable and 300 mW margin improves reliability

Compared with BZX84-B8V2,215, MMBZ5231BS-7-F trades ±2 % accuracy for broader availability and lower unit cost, while BZX84-C8V2-TP sacrifices tolerance for +50 mW power headroom-making the original optimal for stable 8.2 V references demanding both precision and thermal predictability.

Availability

BZX84-B8V2,215 is available at Aetrix Electronics and suitable for power supply reference design, sensor biasing, overvoltage clamp implementation, and microcontroller reset circuitry requiring stable component supply and traceable sourcing.

Supply support for BZX84-B8V2,215 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 delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency, miniaturization, and sustainability.

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

FAQ

What is the maximum continuous Zener current for BZX84-B8V2,215 at 25 °C ambient?

The maximum continuous Zener current is derived from P_tot = 250 mW and V_Z ≈ 8.2 V, yielding I_Z(max) ≈ 30.5 mA. However, thermal limits require derating above 25 °C ambient; at 70 °C, usable current drops to ~18 mA due to R_th(j-a) = 500 K/W and T_j(max) = 150 °C.

Can Pin 2 be used as a heatsink or grounded for thermal improvement?

No - Pin 2 is internally not connected (n.c.) per datasheet Table 2. Routing it to ground or copper pour provides no thermal benefit and risks unintended coupling into adjacent traces. Thermal performance relies solely on cathode (Pin 3) solder joint and PCB copper area per Figure 12 footprint.

How does the +3.2 mV/K temperature coefficient affect long-term voltage stability?

A +3.2 mV/K coefficient means V_Z increases by ~0.27 V over a 85 K rise (−40 °C to +45 °C), or ~3.3 % of nominal 8.2 V. This drift is linear and predictable, making it compensatable in closed-loop systems but limiting open-loop reference accuracy in wide-temperature applications.

Is BZX84-B8V2,215 suitable for automotive applications?

No - this part is explicitly marked "non-automotive qualified" in Revision History Section 13. It lacks AEC-Q101 qualification, automotive-grade screening, and extended temperature validation. For automotive use, Nexperia offers separate -Q qualified variants (e.g., BZX84-Q series) with documented PPAP and stress test compliance.

BZX84-B8V2,215 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: BZX84

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 8.2 V

Tolerance:: ±2%

Power - Max:: 250 mW

Impedance (Max) (Zzt):: 15 Ohms

Current - Reverse Leakage @ Vr:: 700 nA @ 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:: TO-236AB

BZX84-B8V2,215 FAQ

1.How can I place an order for BZX84-B8V2,215 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX84-B8V2,215 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-B8V2,215 reliable?

The price and inventory of BZX84-B8V2,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-B8V2,215 is usually 5 days.

3.What payment methods are accepted for BZX84-B8V2,215?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-B8V2,215 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX84-B8V2,215?

BZX84-B8V2,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX84-B8V2,215 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-B8V2,215?

For technical support, including BZX84-B8V2,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-B8V2,215 requirements.

6.How does Aetrix verify that BZX84-B8V2,215 is sourced from the original manufacturer or authorized distributors?

All BZX84-B8V2,215 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-B8V2,215 meets industry standards.

7.What is the process for return or replacement of BZX84-B8V2,215?

All BZX84-B8V2,215 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-B8V2,215, 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-B8V2,215 part is unused and in its original packaging.

Return procedure for BZX84-B8V2,215:

1.Submit a request within 90 days.

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

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