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onsemi BZX84B6V8LT1G
- Part No.:
- BZX84B6V8LT1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84B6V8LT1G.pdf
- Description:
- DIODE ZENER 6.8V 250MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:10,905
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Product details
Overview
BZX84B6V8LT1G from onsemi is a tight-tolerance Zener diode in SOT-23 package, providing precise 6.8 V voltage regulation at 5 mA test current with ±1% nominal voltage tolerance (6.66 V to 6.94 V), 15 Ω dynamic impedance, and 250 mW power dissipation on FR-5 board - used for voltage reference and overvoltage protection in portable power rails.
For engineers reviewing the BZX84B6V8LT1G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage accuracy, low dynamic impedance at regulation current, thermal stability across −65°C to +150°C junction range, and ESD robustness (>16 kV HBM) in high-density PCB layouts.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown when cathode voltage exceeds anode by ≥6.8 V. Its tight 1% VZ tolerance and low 15 Ω Zener impedance at IZT = 5 mA enable stable regulation under varying load conditions.
Designed for surface-mount assembly on FR-5 or alumina substrates, it features a defined thermal resistance of 500°C/W (FR-5) and supports operation up to 150°C junction temperature. The SOT-23 package includes a cathode band marking and no internal connection on pin 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.66 V min / 6.8 V nom / 6.94 V max @ IZT = 5 mA - ensures ±1% regulation accuracy for precision reference designs |
| Zener Impedance (ZZT) | 15 Ω max @ IZT = 5 mA - minimizes output voltage variation under dynamic load changes |
| Power Dissipation (PD) | 250 mW on FR-5 board @ TA = 25°C - defines maximum continuous power handling in standard PCB environments |
| Reverse Leakage (IR) | 2 µA max @ VR = 5.44 V - guarantees low standby current in undervoltage detection circuits |
| Temperature Coefficient | +1.2 mV/°C @ IZT = 5 mA - enables predictable VZ drift compensation in wide-temperature applications |
| Capacitance (C) | 155 pF @ VR = 0 V, f = 1 MHz - impacts high-frequency noise filtering and transient response in bypass roles |
| ESD Rating | Class 3 (>16 kV) per HBM - ensures robustness against handling and system-level electrostatic discharge events |
Pinout & Package
SOT-23 (TO-236) plastic surface-mount package, 2.90 mm × 1.30 mm × 1.00 mm, void-free thermosetting case with corrosion-resistant finish; polarity indicated by cathode band; rated for 260°C soldering (10 s).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Forward-biased terminal; connects to lower-potential node in regulation path |
| 2 | No Connection | Internally unconnected; must remain floating - not tied to ground or signal |
| 3 | Cathode | Reverse-biased terminal; connects to regulated voltage rail or reference point |
Key Features
| Feature | Design Value |
|---|---|
| Tight Zener voltage tolerance | ±1% (6.66–6.94 V) at 5 mA - reduces calibration overhead in precision analog systems |
| Low dynamic impedance | 15 Ω max - maintains regulation stability under fast load transients in DC-DC feedback paths |
| High ESD immunity | Class 3 (>16 kV HBM) - eliminates need for external ESD protection in handheld interfaces |
| Pb-free and RoHS compliant | Meets global environmental compliance without derating or reliability trade-offs |
| Optimized for automated assembly | SOT-23 footprint with standardized tape-and-reel (3,000 pcs) - supports high-throughput pick-and-place |
Applications
| Portable Power Rail Protection | Microcontroller Voltage Reference |
|---|---|
Use Scenario: Clamping 5 V/3.3 V supply lines in battery-powered IoT sensors against surge or LDO dropout. IC Role / Device Role / Timing Role: Two-terminal shunt regulator absorbing excess current during overvoltage events. Use Value: Prevents MCU brownout or latch-up with 6.8 V clamping threshold and 250 mW dissipation capability. |
Use Scenario: Providing stable bias voltage for ADC reference inputs or op-amp comparators in wearables. IC Role / Device Role / Timing Role: Precision voltage reference source with <±1% tolerance and low tempco. Use Value: Enables 12-bit ADC accuracy without trimming, leveraging 15 Ω ZZT and +1.2 mV/°C TC. |
| USB Interface Overvoltage Clamp | Industrial Sensor Signal Conditioning |
Use Scenario: Protecting USB data line ESD protection diodes and transceivers from bus overvoltage. IC Role / Device Role / Timing Role: Secondary clamp after TVS, limiting residual voltage to safe levels. Use Value: Limits clamped voltage to ≤6.94 V with 2 µA leakage at 5.44 V - avoids false triggering of downstream logic. |
Use Scenario: Stabilizing excitation voltage for resistive bridge sensors in factory automation modules. IC Role / Device Role / Timing Role: Low-drift reference generator for ratiometric measurement circuits. Use Value: Maintains <0.02% full-scale error over −40°C to +85°C ambient via predictable +1.2 mV/°C TC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84C6V8LT1G | Standard-tolerance version: 6.4–7.2 V (±5%) vs. BZX84B6V8LT1G's 6.66–6.94 V (±1%) | Acceptable where ±5% regulation suffices; higher ZZT (80 Ω vs. 15 Ω) limits dynamic performance | Select BZX84C6V8LT1G for cost-sensitive, non-critical biasing where tighter tolerance isn't required. |
| MMSZ4689T1G | Same 6.8 V nominal, but ±5% tolerance (6.46–7.14 V); 300 mW rating; SOD-123 package (larger footprint) | Higher power handling suits higher-current clamping; SOD-123 requires layout change vs. SOT-23 | Choose MMSZ4689T1G only if >250 mW dissipation is needed and board space allows larger package. |
Compared with BZX84C6V8LT1G and MMSZ4689T1G, the BZX84B6V8LT1G delivers superior voltage accuracy and lower impedance in the smallest standard footprint - making it optimal for space-constrained, high-precision regulation where ±1% tolerance and minimal voltage drift are mandatory.
Availability
BZX84B6V8LT1G is available at Aetrix Electronics and suitable for portable electronics, industrial sensor nodes, and USB interface protection requiring stable component supply with full traceability and lifecycle management.
Supply support for BZX84B6V8LT1G 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
onsemi (Semiconductor Components Industries, LLC) is a global supplier of energy-efficient semiconductor solutions, specializing in automotive, industrial, cloud, and IoT applications.
The BZX84BxxxLT1G series belongs to onsemi's precision Zener voltage regulator product line, engineered for high-density, low-power applications demanding tight voltage tolerance and robust ESD performance in miniature packages.
FAQ
What is the Zener voltage tolerance of BZX84B6V8LT1G?
The BZX84B6V8LT1G has a tight Zener voltage tolerance of ±1%, specified as 6.66 V minimum to 6.94 V maximum at IZT = 5 mA. This is confirmed in the "BZX84BxxxL (Tight Tolerance Series)" table on page 4 of the official onsemi datasheet. The nominal 6.8 V value reflects the center of this range and is used for design calculations where worst-case bounds are not required.
Does BZX84B6V8LT1G have a connection on pin 2?
No, pin 2 of the BZX84B6V8LT1G is internally unconnected (NC), as explicitly stated in the datasheet's pinout diagrams on pages 2 and 4 under "Pinout: 1-Anode, 2-No Connection, 3-Cathode". This applies to all BZX84BxxxLT1G devices in the SOT-23 package and must be left floating in PCB layout - no grounding or routing is permitted.
What is the maximum power dissipation of BZX84B6V8LT1G on FR-5 board?
The BZX84B6V8LT1G is rated for 250 mW total power dissipation on FR-5 board at TA = 25°C, with thermal derating of 2.0 mW/°C above that temperature. This value is listed in the "MAXIMUM RATINGS" table on page 2 and is critical for calculating safe operating area in continuous-clamp applications.
How does the temperature coefficient affect BZX84B6V8LT1G's regulation voltage?
The BZX84B6V8LT1G has a positive temperature coefficient of +1.2 mV/°C at IZT = 5 mA, meaning its Zener voltage increases by approximately 1.2 mV for every 1°C rise in junction temperature. This behavior is documented in the "ELECTRICAL CHARACTERISTICS" table on page 4 and enables predictable drift compensation in temperature-stable reference designs.
Is BZX84B6V8LT1G RoHS compliant and lead-free?
Yes, BZX84B6V8LT1G is Pb-free and RoHS compliant, as confirmed in the "Features" section (page 1) and "ORDERING INFORMATION" table (page 2) of the onsemi datasheet. The "G" suffix in the part number explicitly denotes Pb-free packaging, and the device meets EU RoHS Directive 2011/65/EU requirements without exemptions.
BZX84B6V8LT1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- BZX84BxxxLT1G
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.8 V
- Tolerance:
- ±2%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 4 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:
- SOT-23-3 (TO-236)
BZX84B6V8LT1G FAQ
1.How can I place an order for BZX84B6V8LT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84B6V8LT1G 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 BZX84B6V8LT1G reliable?
The price and inventory of BZX84B6V8LT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84B6V8LT1G is usually 5 days.
3.What payment methods are accepted for BZX84B6V8LT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84B6V8LT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84B6V8LT1G?
BZX84B6V8LT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84B6V8LT1G 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 BZX84B6V8LT1G?
For technical support, including BZX84B6V8LT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84B6V8LT1G requirements.
6.How does Aetrix verify that BZX84B6V8LT1G is sourced from the original manufacturer or authorized distributors?
All BZX84B6V8LT1G 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 BZX84B6V8LT1G meets industry standards.
7.What is the process for return or replacement of BZX84B6V8LT1G?
All BZX84B6V8LT1G units undergo pre-shipment inspection (PSI). If there is an issue with BZX84B6V8LT1G, 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 BZX84B6V8LT1G part is unused and in its original packaging.
Return procedure for BZX84B6V8LT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84B6V8LT1G Tags
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