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

Nexperia USA Inc. BZX84-B16VL

Name: BZX84-B16VL
Brand: Nexperia USA Inc.
SKU: BZX84-B16VL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX84-B16VL

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: BZX84-B16VL.pdf

Description:: DIODE ZENER 16V 250MW TO236AB

Quantity:: RFQ Add To RFQ list

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Inventory:3,119

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Product details

Overview

BZX84-B16VL 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 test current, 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, sensor biasing circuits, and microcontroller I/O protection networks.

For engineers reviewing the BZX84-B16VL datasheet, BZX84-B16VL pinout, BZX84-B16VL application, or BZX84-B16VL equivalent, key selection considerations include its 16 V Zener voltage tolerance (±2 %), differential resistance of 200 Ω max at 5 mA, temperature coefficient of +11.2 mV/K, reverse current ≤0.05 μA at 12.8 V, and thermal resistance of 500 K/W junction-to-ambient.

Technical Context

This device operates in reverse-bias breakdown mode to maintain stable voltage across its terminals under varying load or input conditions. Its Zener mechanism provides predictable regulation with a positive temperature coefficient (+11.2 mV/K) above ~6 V, enabling predictable drift compensation in reference designs.

The SOT23 package supports surface-mount reflow assembly and delivers thermal performance characterized by R_th(j-a) = 500 K/W and R_th(j-sp) = 330 K/W, with maximum junction temperature limited to 150 °C and ambient operating range from −55 °C to +150 °C.

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 precise clamping threshold for 16 V rail stabilization
Differential Resistance (r_dif)	≤200 Ω at I_Z = 5 mA - determines output impedance and regulation sensitivity to current changes
Reverse Current (I_R)	≤0.05 μA at V_R = 12.8 V - ensures minimal leakage below breakdown, critical for low-power standby circuits
Temperature Coefficient (S_Z)	+11.2 mV/K at I_Z = 5 mA - quantifies voltage drift per degree Celsius, enabling thermal error budgeting
Total Power Dissipation (P_tot)	250 mW at T_amb ≤ 25 °C on FR4 PCB - sets maximum continuous DC power handling in standard layout
Non-repetitive Peak Power (P_ZSM)	40 W for t_p = 100 μs - supports transient surge suppression without failure
Junction Temperature (T_j)	−55 °C to +150 °C - defines full operational envelope for industrial and automotive-adjacent environments

Pinout & Package

Package: SOT23 (TO-236AB), 3-lead surface-mount plastic package with standard footprint per Figure 12 (reflow) and Figure 13 (wave soldering); dimensions per Figure 11.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode (A)	Connected to lower-potential node; reverse-biased during regulation; must be routed with adequate current-carrying capacity
2	Not Connected (n.c.)	Internally unconnected; electrically isolated; no PCB trace or solder mask required
3	Cathode (K)	Connected to higher-potential node; primary heat path to PCB via cathode tab; critical for thermal management

Key Features

Feature	Design Value
±2 % Zener voltage tolerance	Enables tighter regulation than ±5 % variants, reducing need for post-regulation trimming in mid-precision references
250 mW continuous power rating	Supports stable operation in space-constrained consumer and industrial PCBs without forced cooling
40 W non-repetitive surge capability	Withstands ESD and line transients up to 100 μs without degradation, eliminating need for external TVS in many cases
Positive temperature coefficient (+11.2 mV/K)	Allows predictable voltage drift modeling for temperature-compensated reference designs using complementary components
SOT23 footprint compatibility	Enables drop-in replacement with other industry-standard 3-pin SMD Zeners and simplifies PCB library reuse

Applications

Power Supply Reference

Sensor Biasing Network

Use Scenario: Providing stable 16 V reference for ADC voltage dividers and op-amp feedback networks in battery-powered data loggers.

IC Role / Device Role / Timing Role: Zener voltage reference source establishing accurate scaling factor for analog signal conditioning.

Use Value: ±2 % tolerance and +11.2 mV/K TC enable <1.5 % total error over −40 °C to +85 °C without calibration.

Use Scenario: Biasing thermistor or RTD bridges in HVAC control modules where excitation voltage stability directly impacts measurement resolution.

IC Role / Device Role / Timing Role: Precision voltage clamp ensuring constant bridge excitation despite input rail variation.

Use Value: 200 Ω differential resistance minimizes loading-induced offset, preserving <0.1 % bridge balance accuracy.

Microcontroller I/O Protection

Low-Power Voltage Clamp

Use Scenario: Protecting 3.3 V or 5 V MCU GPIO pins against 12–24 V field wiring faults in industrial PLC I/O modules.

IC Role / Device Role / Timing Role: Reverse-biased shunt clamp diverting fault current away from sensitive CMOS inputs.

Use Value: 40 W surge rating absorbs 100 μs transients per IEC 61000-4-4, meeting Level 3 immunity without series resistance penalty.

Use Scenario: Clamping auxiliary 16 V supply rail in IoT edge node to prevent overvoltage damage to RF transceivers and PMICs.

IC Role / Device Role / Timing Role: Standby-mode voltage limiter activated only during overvoltage events.

Use Value: 0.05 μA reverse leakage at 12.8 V ensures <1 nA standby current draw, extending battery life in always-on applications.

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 MMBZ5245B	16 V nominal, ±5 % tolerance, 225 mW P_tot, r_dif ≤ 25 Ω at 20 mA	Higher test current shifts regulation point; wider tolerance increases calibration burden	Select when lower dynamic impedance at higher current is prioritized over tight tolerance
Vishay BZX84-C16	16 V nominal, ±5 % tolerance, identical SOT23 package and 250 mW rating	Looser tolerance reduces cost but requires design margin for worst-case voltage drift	Select for cost-sensitive applications where ±5 % regulation is acceptable and thermal profile matches

Compared with BZX84-B16VL, MMBZ5245B offers lower dynamic impedance but sacrifices tolerance and thermal robustness, while BZX84-C16 trades precision for cost-making the BZX84-B16VL optimal for designs requiring ±2 % accuracy without compromising surge resilience or thermal derating.

Availability

BZX84-B16VL is available at Aetrix Electronics and suitable for power supply reference design, sensor biasing networks, microcontroller I/O protection, and low-power voltage clamp applications requiring stable component supply across industrial, instrumentation, and embedded systems programs.

Supply support for BZX84-B16VL 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 optimized for efficiency, miniaturization, and manufacturability in high-volume applications.

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

FAQ

What is the maximum continuous forward current for BZX84-B16VL?

The BZX84-B16VL is not intended for forward conduction; its absolute maximum forward current is 200 mA per limiting values table, but typical forward voltage is ≤0.9 V at 10 mA. In normal Zener operation, forward bias is avoided-designs must ensure reverse polarity connection to maintain regulation integrity and avoid thermal runaway.

Can BZX84-B16VL replace BZX84-A16 in existing designs?

No-BZX84-A16 has ±1 % tolerance (15.84–16.16 V), while BZX84-B16VL has ±2 % (15.7–16.3 V). The wider tolerance increases worst-case voltage deviation by 0.26 V, potentially violating tight reference or protection thresholds. Replacement requires validation of system-level margin for both regulation accuracy and temperature drift.

How does the 2nd pin (n.c.) affect PCB layout?

Pin 2 is internally unconnected and electrically isolated. No copper trace, solder mask opening, or thermal pad is required. Standard SOT23 footprints accommodate it, but designers must verify that automated assembly tools do not misinterpret the n.c. pad as a solder joint-no solder paste or reflow profile adjustment is needed.

Is BZX84-B16VL qualified for automotive applications?

No-this variant is non-automotive qualified per Nexperia's revision history (Rev. 7, January 2023). Automotive-grade alternatives (e.g., BZX84-Q series) undergo AEC-Q101 stress testing and have extended temperature qualification. Use BZX84-B16VL only in industrial, consumer, or commercial applications where automotive reliability standards are not mandated.

BZX84-B16VL 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:: ±1.88%

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 (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

BZX84-B16VL FAQ

1.How can I place an order for BZX84-B16VL through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX84-B16VL 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-B16VL reliable?

The price and inventory of BZX84-B16VL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-B16VL is usually 5 days.

3.What payment methods are accepted for BZX84-B16VL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-B16VL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX84-B16VL?

BZX84-B16VL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX84-B16VL 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-B16VL?

For technical support, including BZX84-B16VL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-B16VL requirements.

6.How does Aetrix verify that BZX84-B16VL is sourced from the original manufacturer or authorized distributors?

All BZX84-B16VL 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-B16VL meets industry standards.

7.What is the process for return or replacement of BZX84-B16VL?

All BZX84-B16VL units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-B16VL, 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-B16VL part is unused and in its original packaging.

Return procedure for BZX84-B16VL:

1.Submit a request within 90 days.

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

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