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

Nexperia USA Inc. BZX84-B16,215

Name: BZX84-B16,215
Brand: Nexperia USA Inc.
SKU: BZX84-B16,215
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX84-B16,215

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: BZX84-B16,215.pdf

Description:: DIODE ZENER 16V 250MW TO236AB

Quantity:: RFQ Add To RFQ list

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Inventory:100,804

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Product details

Overview

BZX84-B16,215 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, rated for 16 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, such as sensor biasing or microcontroller I/O protection circuits.

For engineers reviewing the BZX84-B16,215 datasheet, BZX84-B16,215 pinout, BZX84-B16,215 application, or BZX84-B16,215 equivalent, key selection criteria include its 16 V Zener voltage tolerance (±2 %), thermal resistance (330 K/W junction-to-solder point), differential resistance (≤200 Ω at 5 mA), reverse current (≤0.1 μA at 12.8 V), and SOT23 footprint compatibility with high-density PCB layouts.

Technical Context

This device operates in reverse-bias breakdown mode to maintain stable voltage across its cathode-anode terminals under varying load or input conditions. Its Zener mechanism provides predictable regulation with temperature coefficient of +11.2 mV/K at 5 mA, enabling compensation-aware designs.

Designed for surface-mount assembly on FR4 PCBs with single-sided 70 µm copper, it supports reflow and wave soldering per defined footprints. The not-connected (n.c.) terminal (Pin 2) isolates internal structure but requires no external connection-critical for layout routing integrity.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage V_Z	15.7 V to 16.3 V at I_Z = 5 mA - defines regulation setpoint with ±2 % tolerance for stable reference generation
Differential Resistance r_dif	≤200 Ω at I_Z = 5 mA - determines output impedance and load regulation error under current variation
Reverse Current I_R	≤0.1 μA at V_R = 12.8 V - ensures minimal leakage before breakdown, critical for low-power standby circuits
Total Power Dissipation P_tot	250 mW at T_amb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 PCB
Non-repetitive Peak Reverse Power	40 W for t_p = 100 μs - enables transient surge suppression without damage during ESD or inductive kick events
Junction-to-Solder-Point Thermal Resistance	330 K/W - quantifies heat transfer efficiency from die to PCB copper, guiding thermal pad design
Forward Voltage V_F	≤0.9 V at I_F = 10 mA - specifies conduction loss when used in forward-biased protection configurations

Pinout & Package

SOT23 (TO-236AB) plastic surface-mounted package with 3 leads; 1.3 mm × 2.9 mm × 1.1 mm body dimensions; gull-wing lead form; tin-plated terminations compatible with Pb-free reflow.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode (A)	Forward-current entry point; connected to lower-potential node in Zener regulation configuration
2	Not Connected (n.c.)	Internally unconnected terminal; must remain floating-no PCB trace or via allowed
3	Cathode (K)	Reverse-bias voltage reference node; tied to regulated output or clamping rail

Key Features

Feature	Design Value
±2 % Zener voltage tolerance	Enables tighter regulation than ±5 % variants, reducing need for post-regulation trimming in precision references
250 mW power rating on FR4 PCB	Supports continuous operation in space-constrained consumer and industrial control boards without heatsinking
Non-repetitive 40 W surge capability	Withstands short-duration transients (e.g., IEC 61000-4-4 bursts) without degradation or parametric shift
330 K/W junction-to-solder-point R_th	Allows direct thermal coupling to PCB copper pour, improving long-term reliability under thermal cycling
SOT23 footprint compatibility	Enables drop-in replacement with other industry-standard 3-pin SMD Zeners (e.g., MMBZ5245B, SMBJ16A)

Applications

Power Supply Reference

Sensor Biasing

Use Scenario: Providing stable 16 V reference for ADC voltage dividers in battery-powered environmental sensors.

IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to fix reference node potential independent of supply drift.

Use Value: Maintains <±0.32 V regulation window over temperature (−55 °C to +150 °C), ensuring consistent sensor full-scale accuracy.

Use Scenario: Biasing photodiode anodes in optical smoke detectors where low dark current is essential.

IC Role / Device Role / Timing Role: Reverse-biased voltage clamp limiting photodiode cathode voltage to prevent avalanche noise.

Use Value: Leakage <0.1 μA at 12.8 V ensures sub-nA dark current contribution, preserving signal-to-noise ratio.

Microcontroller I/O Protection

Industrial Signal Conditioning

Use Scenario: Clamping 3.3 V GPIO lines against 24 V field wiring faults in PLC input modules.

IC Role / Device Role / Timing Role: Cathode-connected to I/O pin, anode to ground-shunts overvoltage to GND during fault events.

Use Value: 40 W non-repetitive surge rating absorbs 100 μs transients without failure, meeting IEC 61000-4-4 Level 3 immunity.

Use Scenario: Stabilizing op-amp feedback networks in 4–20 mA transmitter loop-powered circuits.

IC Role / Device Role / Timing Role: Low-dynamic-impedance voltage reference setting gain-setting resistor bias point.

Use Value: 200 Ω differential resistance minimizes gain error shift across 0–10 mA loop current range.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MMBZ5245B	±5 % tolerance (15.2–16.8 V), 350 mW rating, same SOT23 package	Higher power but looser tolerance; less suitable for precision references	Select when cost sensitivity outweighs voltage accuracy requirements
BZX84-C16	±5 % tolerance (15.2–16.8 V), identical thermal and surge specs	Same footprint and mounting, but wider V_Z spread increases calibration burden	Choose only if legacy BOM allows tolerance relaxation and testing budget is constrained

Compared with MMBZ5245B and BZX84-C16, BZX84-B16,215 delivers tighter voltage control (±2 % vs. ±5 %) without sacrificing surge robustness or thermal performance-making it optimal for reference-critical, space-limited designs where post-production calibration is impractical.

Availability

BZX84-B16,215 is available at Aetrix Electronics and suitable for power supply reference, sensor biasing, microcontroller I/O protection, and industrial signal conditioning requiring stable component supply across production lifecycles.

Supply support for BZX84-B16,215 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 manufacturability.

BZX84-B16,215 belongs to the BZX84 series of low-power Zener diodes designed for precision voltage regulation and transient clamping in compact, cost-sensitive consumer and industrial electronics.

FAQ

What is the maximum continuous reverse current this diode can handle at 16 V?

The BZX84-B16,215 is not rated for continuous reverse current at 16 V-it operates in Zener breakdown at that voltage. Its specified reverse current is ≤0.1 μA at 12.8 V (80 % of V_Z). At exactly 16 V, it conducts regulation current (typically 5 mA), limited externally by series resistance to stay within 250 mW dissipation.

Can Pin 2 be grounded or left unconnected on the PCB?

Pin 2 is internally not connected (n.c.) and must remain unconnected-no trace, pad, or via should contact it. Grounding or routing to any net risks mechanical stress, solder bridging, or unintended parasitic coupling; the datasheet explicitly prohibits connection.

How does temperature affect its Zener voltage stability?

At I_Z = 5 mA, the temperature coefficient is +11.2 mV/K. Over −55 °C to +150 °C, this yields ~2.3 V total drift-meaning V_Z shifts from ~15.4 V to ~17.7 V. For stable references, use with temperature-compensating circuits or limit ambient swing.

Is this part qualified for automotive applications?

No. Per Nexperia's Rev. 7 datasheet (January 2023), the BZX84-B16,215 is non-automotive qualified. It lacks AEC-Q101 stress testing and automotive-grade screening. For automotive use, select the -Q qualified variants (e.g., BZX84-B16,215-Q) with documented qualification reports.

BZX84-B16,215 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):: 16 V

Tolerance:: ±2%

Power - Max:: 250 mW

Impedance (Max) (Zzt):: 40 Ohms

Current - Reverse Leakage @ Vr:: 50 nA @ 11.2 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-B16,215 FAQ

1.How can I place an order for BZX84-B16,215 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX84-B16,215 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-B16,215 reliable?

The price and inventory of BZX84-B16,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-B16,215 is usually 5 days.

3.What payment methods are accepted for BZX84-B16,215?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-B16,215 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX84-B16,215?

BZX84-B16,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX84-B16,215 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-B16,215?

For technical support, including BZX84-B16,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-B16,215 requirements.

6.How does Aetrix verify that BZX84-B16,215 is sourced from the original manufacturer or authorized distributors?

All BZX84-B16,215 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-B16,215 meets industry standards.

7.What is the process for return or replacement of BZX84-B16,215?

All BZX84-B16,215 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-B16,215, 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-B16,215 part is unused and in its original packaging.

Return procedure for BZX84-B16,215:

1.Submit a request within 90 days.

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

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