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onsemi BZX84B8V2LT1G
- Part No.:
- BZX84B8V2LT1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84B8V2LT1G.pdf
- Description:
- DIODE ZENER 8.2V 250MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:26,659
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Product details
Overview
BZX84B8V2LT1G from onsemi is a tight-tolerance Zener diode in SOT-23 package, providing precise 8.2 V voltage regulation at 5 mA test current with ±1% nominal voltage tolerance (8.04–8.36 V), 15 Ω dynamic impedance, and 0.7 µA reverse leakage at 6.6 V. It delivers stable reference voltage for low-power analog circuits, power supply feedback paths, and overvoltage protection in portable electronics.
For engineers reviewing the BZX84B8V2LT1G datasheet, pinout, applications, or equivalent options, key selection considerations include its ±1% Zener voltage tolerance, 250 mW power rating on FR-4 board, −65 °C to +150 °C operating temperature range, and ESD robustness (>16 kV HBM), critical for space-constrained, high-reliability designs.
Technical Context
This device operates as a two-terminal voltage reference using controlled avalanche breakdown in silicon. Its Zener voltage is specified at 5 mA (IZT), with temperature coefficient of +3.2 mV/°C and capacitance of 135 pF at 0 V bias and 1 MHz - enabling predictable behavior in filtering and transient suppression roles.
The SOT-23 package features Pin 1 (Anode), Pin 2 (No Connection), and Pin 3 (Cathode), with polarity indicated by a band on the cathode side. Thermal resistance is 500 °C/W on FR-5 board, supporting operation up to 150 °C junction temperature under derated power conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.04–8.36 V @ IZT = 5 mA - ensures ±1% regulation accuracy for precision reference applications |
| Dynamic Impedance (ZZT) | 15 Ω @ IZT = 5 mA - maintains stable output under small-signal load variations |
| Reverse Leakage Current (IR) | 0.7 µA @ VR = 6.6 V - minimizes quiescent current in battery-powered circuits |
| Power Dissipation (PD) | 250 mW on FR-4 board @ TA = 25°C - defines maximum continuous DC power handling in standard PCB layouts |
| Temperature Coefficient | +3.2 mV/°C @ IZT = 5 mA - enables predictable voltage drift compensation in wide-temperature environments |
| Capacitance (C) | 135 pF @ VR = 0 V, f = 1 MHz - impacts high-frequency noise filtering and transient response in bypass applications |
| ESD Rating | Class 3 (>16 kV) per HBM - supports robust handling in automated assembly and end-use environments |
Pinout & Package
SOT-23 (TO-236) surface-mount plastic package, 2.90 × 1.30 × 1.00 mm, void-free thermosetting case with corrosion-resistant finish; cathode indicated by polarity band; Pb-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Connected to lower-potential node in reverse-biased configuration; must be held at voltage ≤ cathode minus VZ for regulation |
| 2 | No Connection | Internally unconnected; no electrical function - must remain floating in PCB layout |
| 3 | Cathode | Connected to higher-potential node; polarity band identifies this terminal for correct orientation during placement |
Key Features
| Feature | Design Value |
|---|---|
| Tight Zener voltage tolerance | ±1% (8.04–8.36 V) - reduces calibration overhead and improves system-level accuracy without trimming |
| Low dynamic impedance | 15 Ω at 5 mA - suppresses ripple and line/load regulation errors in feedback networks |
| High ESD robustness | >16 kV HBM - eliminates need for external ESD protection in handheld and portable interfaces |
| Pb-free and RoHS-compliant | Meets global environmental compliance requirements - supports unrestricted shipment and industrial use |
| Optimized for automated assembly | SOT-23 footprint with standardized tape-and-reel packaging (3,000 units/reel) - ensures reliable pick-and-place yield |
Applications
| Power Supply Feedback Reference | Overvoltage Clamp Protection |
|---|---|
|
Use Scenario: Stabilizing output voltage in low-current linear regulators or switching converter feedback loops. IC Role / Device Role / Timing Role: Provides precise 8.2 V reference point for error amplifier comparison. Use Value: ±1% VZ tolerance directly improves output voltage accuracy to within ±1.2% without external trimming. |
Use Scenario: Limiting transient voltage spikes on I/O lines or sensor inputs in battery-powered devices. IC Role / Device Role / Timing Role: Shunts excess energy above 8.2 V to ground when reverse-biased. Use Value: 15 Ω ZZT ensures clamping voltage stays within 0.15 V of nominal during 10 mA transients. |
| Portable Device Voltage Monitor | ADC Reference Stabilization |
|
Use Scenario: Monitoring battery voltage thresholds in wearables or Bluetooth peripherals. IC Role / Device Role / Timing Role: Acts as comparator input threshold via resistor divider against regulated 8.2 V node. Use Value: +3.2 mV/°C TC allows predictable offset correction across −20 °C to +70 °C operating range. |
Use Scenario: Providing stable reference voltage for 10-bit+ SAR ADCs in data loggers or sensor nodes. IC Role / Device Role / Timing Role: Supplies low-noise, low-drift reference to ADC VREF pin. Use Value: 135 pF capacitance and 15 Ω impedance minimize reference noise coupling and settling time degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84C8V2LT1G | Standard-tolerance version: 7.7–8.7 V (±6.1%) vs. BZX84B8V2LT1G's 8.04–8.36 V (±1%) | Acceptable where system calibration compensates for wider VZ spread; lower cost | Select BZX84C8V2LT1G only if ±6.1% VZ variation is acceptable in closed-loop feedback or clamping margin |
| MMSZ4689T1G | Same 8.2 V nominal but ±5% tolerance (7.8–8.6 V); 500 mW rating on FR-4; SOD-123 package (larger footprint) | Higher power handling suits higher-energy transients; incompatible SOD-123 footprint requires PCB redesign | Choose MMSZ4689T1G only when >250 mW dissipation is required and board area permits SOD-123 placement |
Compared with BZX84C8V2LT1G and MMSZ4689T1G, the BZX84B8V2LT1G uniquely balances ±1% precision, SOT-23 miniaturization, and 250 mW capability - making it optimal for high-density, calibration-sensitive applications where both accuracy and board space are constrained.
Availability
BZX84B8V2LT1G is available at Aetrix Electronics and suitable for power supply feedback references, overvoltage clamp protection, and portable device voltage monitoring requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for BZX84B8V2LT1G 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 semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The BZX84BxxxLT1G series belongs to onsemi's precision Zener regulator product line, engineered specifically for high-accuracy voltage reference and protection in space-constrained, high-reliability portable and embedded systems.
FAQ
What is the Zener voltage tolerance of BZX84B8V2LT1G?
The BZX84B8V2LT1G has a tight Zener voltage tolerance of ±1%, specified as 8.04 V minimum to 8.36 V maximum at 5 mA test current. This precision enables direct use in applications requiring minimal post-manufacturing calibration, such as feedback networks in DC-DC converters and voltage monitors in portable electronics. The BZX84B8V2LT1G achieves this tighter spec versus standard-tolerance variants like BZX84C8V2LT1G (±6.1%).
What is the maximum power dissipation for BZX84B8V2LT1G on a standard PCB?
The BZX84B8V2LT1G is rated for 250 mW total power dissipation on FR-4 or FR-5 board at 25°C ambient temperature, derating linearly by 2.0 mW/°C above that. This limit assumes standard JEDEC-defined board conditions and defines the safe continuous DC power handling without exceeding 150°C junction temperature. The BZX84B8V2LT1G must be operated within this envelope to ensure reliability and parametric stability.
How is the polarity marked on the BZX84B8V2LT1G SOT-23 package?
The BZX84B8V2LT1G uses a cathode band to indicate polarity: the banded end corresponds to Pin 3 (Cathode), while Pin 1 (Anode) is at the opposite end. Pin 2 is internally unconnected and must remain unattached in the PCB layout. This marking aligns with SOT-23 Style 8 mechanical outline and is verified in onsemi's package drawings and datasheet marking diagrams. Correct orientation is essential for proper reverse-bias operation of the BZX84B8V2LT1G.
What is the reverse leakage current specification for BZX84B8V2LT1G?
The BZX84B8V2LT1G specifies a maximum reverse leakage current (IR) of 0.7 µA at VR = 6.6 V and TA = 25°C. This low leakage supports ultra-low-quiescent-current designs, such as battery-backed voltage monitors and always-on sensor interfaces. The value is measured under standardized test conditions and remains valid across the full −65 °C to +150 °C operating temperature range, with typical increase below 0.1 µA/°C rise. The BZX84B8V2LT1G's leakage performance contributes directly to extended battery life in portable applications.
Is BZX84B8V2LT1G suitable for automotive applications?
The BZX84B8V2LT1G itself is not AEC-Q101 qualified; however, the SZBZX84B8V2LT1G variant - identical in electrical and thermal specs but with automotive-grade traceability and PPAP documentation - is certified for automotive use. For non-automotive industrial or consumer designs, the BZX84B8V2LT1G meets all functional requirements including −65 °C to +150 °C junction temperature range and >16 kV HBM ESD rating. Always verify qualification status via part marking and official onsemi documentation before deploying the BZX84B8V2LT1G in safety-critical systems.
BZX84B8V2LT1G 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):
- 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 (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3 (TO-236)
BZX84B8V2LT1G FAQ
1.How can I place an order for BZX84B8V2LT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84B8V2LT1G 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 BZX84B8V2LT1G reliable?
The price and inventory of BZX84B8V2LT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84B8V2LT1G is usually 5 days.
3.What payment methods are accepted for BZX84B8V2LT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84B8V2LT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84B8V2LT1G?
BZX84B8V2LT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84B8V2LT1G 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 BZX84B8V2LT1G?
For technical support, including BZX84B8V2LT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84B8V2LT1G requirements.
6.How does Aetrix verify that BZX84B8V2LT1G is sourced from the original manufacturer or authorized distributors?
All BZX84B8V2LT1G 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 BZX84B8V2LT1G meets industry standards.
7.What is the process for return or replacement of BZX84B8V2LT1G?
All BZX84B8V2LT1G units undergo pre-shipment inspection (PSI). If there is an issue with BZX84B8V2LT1G, 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 BZX84B8V2LT1G part is unused and in its original packaging.
Return procedure for BZX84B8V2LT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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