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Diodes Incorporated BZX84B16-7-F
- Part No.:
- BZX84B16-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84B16-7-F.pdf
- Description:
- DIODE ZENER 16V 300MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,424
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Product details
Overview
BZX84B16-7-F from Diodes Incorporated is a precision 16 V ±2% tolerance Zener diode in SOT23 package, rated for 350 mW power dissipation at 25°C ambient, with 40 Ω dynamic impedance at 5 mA test current and 0.1 µA maximum reverse leakage at 11.2 V, used for voltage regulation and reference in low-power analog circuits.
For engineers reviewing the BZX84B16-7-F datasheet, BZX84B16-7-F pinout, BZX84B16-7-F application, or BZX84B16-7-F equivalent, key selection criteria include Zener voltage tolerance (±2%), thermal resistance (357 °C/W), junction temperature range (−65 to +150 °C), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load and supply conditions. Its 16 V nominal Zener voltage is specified at 5 mA test current (IZT), with 10.4 mV/°C temperature coefficient ensuring predictable drift over temperature.
The device exhibits 40 Ω Zener impedance at IZT and 200 Ω at knee current (IZK = 1.0 mA), supporting precise regulation in feedback loops and reference rails. Its SOT23 package enables high-density PCB layouts while meeting J-STD-020 Level 1 moisture sensitivity requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 16.0 V nominal, 15.7–16.3 V range at 5 mA - defines regulated output voltage with tight ±2% tolerance |
| Power Dissipation (PD) | 350 mW at TA = 25°C - sets maximum continuous power handling before thermal derating begins |
| Zener Impedance (ZZT) | 40 Ω at IZT = 5 mA - determines AC voltage variation under changing load current |
| Reverse Leakage (IR) | 0.1 µA max at VR = 11.2 V - ensures minimal quiescent current in standby or high-impedance bias networks |
| Temp Coefficient (TC) | +14.0 mV/°C - quantifies voltage drift per degree Celsius rise above 25°C |
| Junction Temp Range | −65 to +150 °C - supports operation in extended industrial and automotive environments |
| Package | SOT23 - surface-mount, 3-terminal plastic case enabling automated assembly and compact layout |
Pinout & Package
Package: SOT23 - three-terminal surface-mount plastic package with matte tin-plated alloy 42 leadframe, UL 94V-0 flammability rating, and 0.008 g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal / cathode reference ground | Connected to circuit ground or lower potential node when used in reverse-biased regulation |
| Cathode (Pin 2) | Zener breakdown terminal / regulated output node | Provides stable 16 V reference relative to anode; carries full Zener current during regulation |
| No-Connect (Pin 3) | Internal die attach flag / mechanical support | Not electrically connected; serves as heatsink path and mechanical anchor in SOT23 structure |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables accurate voltage references without post-manufacture trimming in precision analog designs |
| AEC-Q101 qualified | Validated for automotive applications including body control modules and sensor interfaces requiring high reliability |
| Lead-free & halogen-free "Green" construction | Meets RoHS 3 (2015/863/EU) and JEDEC J-STD-020 Level 1 standards for eco-compliant manufacturing |
| 350 mW power rating with 357 °C/W RθJA | Supports stable regulation up to ~85°C ambient without external heatsinking in standard FR-4 layouts |
Applications
| Automotive Sensor Reference | Industrial Power Supply Feedback |
|---|---|
Use Scenario: Providing stable 16 V reference for analog front-end of tire pressure monitoring system (TPMS) sensors. IC Role / Device Role / Timing Role: Zener diode acts as primary voltage reference for ADC biasing and op-amp gain-setting networks. Use Value: ±2% tolerance and −65 to +150 °C operation ensure consistent sensor calibration across vehicle lifetime and environmental extremes. |
Use Scenario: Regulating feedback voltage in isolated 24 V DC-DC converter for PLC I/O modules. IC Role / Device Role / Timing Role: Zener clamps optocoupler input voltage to maintain stable error amplifier reference under line transients. Use Value: 40 Ω impedance and 0.1 µA leakage minimize feedback loop error and improve load regulation accuracy. |
| Portable Medical Instrument Biasing | IoT Edge Node Voltage Clamp |
Use Scenario: Generating precise bias for low-noise instrumentation amplifier in handheld ECG front-end. IC Role / Device Role / Timing Role: Zener supplies clean 16 V rail to op-amp dual-supply stage, rejecting supply ripple. Use Value: 14.0 mV/°C tempco allows predictable offset compensation in firmware-based calibration routines. |
Use Scenario: Clamping microcontroller GPIO protection network against ESD and surge events in smart meter design. IC Role / Device Role / Timing Role: Zener absorbs transient energy by entering controlled breakdown above 16 V threshold. Use Value: 350 mW rating and fast response enable robust Class 3B IEC 61000-4-2 protection without crowbar circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5245B-7-F | 16 V nominal, ±5% tolerance, 350 mW, 17 Ω ZZT @ 10 mA - looser tolerance but lower impedance | Higher current capability (10 mA IZT) suits higher-power shunt regulators | Select when tighter dynamic regulation outweighs initial voltage accuracy |
| BZX84-C16 | 16 V nominal, ±5% tolerance, 300 mW, 40 Ω ZZT @ 5 mA - same impedance but lower power rating | Lacks AEC-Q101 qualification and RoHS 3 compliance | Acceptable for cost-sensitive consumer designs where automotive reliability is not required |
Compared with MMBZ5245B-7-F and BZX84-C16, BZX84B16-7-F delivers superior initial accuracy (±2% vs ±5%) and automotive-grade qualification, making it optimal for safety-critical or high-precision voltage reference roles despite identical SOT23 footprint.
Availability
BZX84B16-7-F is available at Aetrix Electronics and suitable for automotive sensor reference, industrial power supply feedback, and portable medical instrument biasing requiring stable component supply with guaranteed long-term availability.
Supply support for BZX84B16-7-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 manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
BZX84B16-7-F belongs to the BZX84B series of precision Zener diodes engineered for high-reliability voltage regulation in automotive and industrial systems, emphasizing tight tolerance, AEC-Q101 compliance, and green material specifications.
FAQ
What is the maximum reverse voltage (VR) this Zener can withstand before breakdown?
The BZX84B16-7-F has a nominal Zener voltage of 16.0 V, with breakdown occurring between 15.7 V and 16.3 V at 5 mA test current. It is not rated for reverse blocking above this range - sustained voltage >16.3 V will cause conduction and power dissipation governed by external current limiting.
Is this part suitable for use in a 125°C ambient environment?
No - while the junction temperature range extends to +150°C, the 350 mW power rating applies only at TA = 25°C. At 125°C ambient, derating reduces usable power to approximately 125 mW (per Figure 1), requiring strict current limiting to avoid thermal runaway.
Does the SOT23 package have a defined polarity marking, and how is it identified?
Yes - the SOT23 package uses a molded notch or beveled edge on the cathode side (Pin 2). The top-view marking "KY5" appears adjacent to Pin 1 (anode), and the cathode band is located opposite the notch, consistent with Diodes Incorporated's standard SOT23 polarity diagram.
How does the 14.0 mV/°C temperature coefficient affect regulation accuracy over −40°C to +85°C?
Over that 125°C span, the Zener voltage shifts by up to ±0.875 V (125 × 14.0 mV/°C ÷ 2), resulting in a total possible deviation of ~±5.5% around 16 V. This must be accounted for in precision references via calibration or compensation circuits.
BZX84B16-7-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):
- 16 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 100 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:
- SOT-23-3
BZX84B16-7-F FAQ
1.How can I place an order for BZX84B16-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84B16-7-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 BZX84B16-7-F reliable?
The price and inventory of BZX84B16-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84B16-7-F is usually 5 days.
3.What payment methods are accepted for BZX84B16-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84B16-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84B16-7-F?
BZX84B16-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84B16-7-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 BZX84B16-7-F?
For technical support, including BZX84B16-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84B16-7-F requirements.
6.How does Aetrix verify that BZX84B16-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84B16-7-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 BZX84B16-7-F meets industry standards.
7.What is the process for return or replacement of BZX84B16-7-F?
All BZX84B16-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84B16-7-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 BZX84B16-7-F part is unused and in its original packaging.
Return procedure for BZX84B16-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84B16-7-F Tags
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Diodes Incorporated
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