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onsemi SZBZX84C8V2LT3G
- Part No.:
- SZBZX84C8V2LT3G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SZBZX84C8V2LT3G.pdf
- Description:
- DIODE ZENER 8.2V 250MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:33,147
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Product details
Overview
SZBZX84C8V2LT3G from onsemi is a 250 mW, 8.2 V nominal Zener voltage regulator diode in SOT-23 package, designed for precision voltage reference and overvoltage protection in space-constrained circuits. It delivers ±5% tolerance at 5 mA test current, 15 Ω dynamic impedance, and operates across −65°C to +150°C junction temperature range. Typical use includes biasing in portable power management and voltage clamping in USB interface protection.
For engineers reviewing the SZBZX84C8V2LT3G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage accuracy at 5 mA, thermal stability (3.2 mV/°C tempco), low leakage (<0.7 µA @ 6.6 V), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This device functions as a two-terminal shunt voltage regulator with cathode-anode polarity and no internal connection on pin 2. Its Zener breakdown is characterized at IZT = 5 mA, where VZ = 7.7–8.7 V, and exhibits tight regulation with ZZT ≤ 15 Ω under that condition.
It features Class 3 ESD robustness (>16 kV HBM), Pb-free RoHS compliance, and is rated for 250 mW dissipation on FR-5 board with 500 °C/W thermal resistance. The 8.2 V nominal voltage places it in the positive temperature coefficient region (+3.2 mV/°C), ensuring stable reference behavior over industrial temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.7 V min / 8.2 V nom / 8.7 V max @ IZT = 5 mA - defines regulated output voltage window under standard test conditions |
| Dynamic Impedance (ZZT) | ≤15 Ω @ IZT = 5 mA - ensures minimal voltage deviation during load transients |
| Power Dissipation (PD) | 250 mW on FR-5 board @ TA = 25°C - sets maximum continuous DC power handling in standard PCB layout |
| Reverse Leakage (IR) | <0.7 µA @ VR = 6.6 V - guarantees low standby current in voltage-sense or clamp applications |
| Temperature Coefficient | +3.2 mV/°C @ IZT = 5 mA - quantifies voltage drift per degree, critical for temperature-stable references |
| Capacitance (C) | 135 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 - enables direct integration into handheld and USB-connected systems without external protection |
Pinout & Package
SOT-23 (TO-236) surface-mount plastic package, 2.90 × 1.30 × 1.00 mm body size, void-free thermosetting case with corrosion-resistant finish. Cathode indicated by band; pin 2 is unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | DC current entry point during forward conduction; tied to lower-potential node in Zener regulation mode |
| 2 | No Connection | Internally isolated terminal - must remain floating; no PCB trace or pad required |
| 3 | Cathode | Regulated output node in shunt configuration; connected to voltage rail being stabilized or clamped |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics including infotainment power rails and sensor biasing under extended temperature and vibration stress |
| ±5% Zener voltage tolerance | Enables predictable clamping thresholds without post-production trimming in cost-sensitive consumer designs |
| 15 Ω dynamic impedance | Maintains <±0.075 V regulation error across ±1 mA load variation at 8.2 V, supporting stable analog reference generation |
| 16 kV HBM ESD rating | Eliminates need for discrete TVS in front-end USB or audio jack protection circuits |
| Pb-free and RoHS compliant | Meets global environmental compliance requirements for industrial and medical end equipment |
Applications
| USB Port Overvoltage Clamp | Automotive Sensor Bias Reference |
|---|---|
Use Scenario: Protects downstream USB 2.0 PHY from transient surges exceeding 5.5 V during hot-plug or ESD events. IC Role / Device Role / Timing Role: Shunt clamping element placed between VBUS and GND, conducting only above 8.2 V threshold. Use Value: Limits peak voltage to 8.7 V (max VZ) while sustaining <0.7 µA leakage below 6.6 V, preserving bus integrity during normal operation. |
Use Scenario: Provides stable 8.2 V bias to MEMS pressure sensor amplifier in engine control unit (ECU) ambient monitoring. IC Role / Device Role / Timing Role: Precision voltage reference source for op-amp excitation, operating continuously across −40°C to +125°C. Use Value: Maintains ±0.4% voltage stability over temperature due to +3.2 mV/°C tempco and AEC-Q101 validation, ensuring sensor linearity. |
| Portable Device Power Rail Clamp | Industrial PLC Input Protection |
Use Scenario: Clamps 9 V battery-derived supply rail in handheld medical thermometer to prevent MCU brownout during load switching. IC Role / Device Role / Timing Role: Passive overvoltage limiter in parallel with LDO input, absorbing surge energy without active control. Use Value: Handles 250 mW peak dissipation with 500 °C/W RJA, enabling reliable operation on compact FR-5 PCB without heatsinking. |
Use Scenario: Shields 24 V digital input channel of programmable logic controller from field-wiring induced transients. IC Role / Device Role / Timing Role: First-stage voltage clamp before optocoupler input, reducing stress on isolation barrier. Use Value: Leverages 135 pF capacitance and 15 Ω ZZT to suppress fast-rising spikes while maintaining <10 ns response time in series with 100 Ω current-limiting resistor. |
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 | Same electrical specs but supplied in 3,000-piece tape-and-reel vs. 10,000-piece for SZBZX84C8V2LT3G; no AEC-Q101 qualification | Targeted at commercial-grade consumer electronics, not automotive or mission-critical industrial use | Select when volume demand is lower and automotive qualification is unnecessary |
| SZBZX84B8V2LT1G | Tighter ±2% tolerance (vs. ±5%), same 8.2 V nominal, 15 Ω ZZT, and AEC-Q101 qualification | Used where reference accuracy dominates over cost - e.g., precision ADC reference buffers or calibration circuits | Choose when absolute voltage accuracy at 5 mA is prioritized over general-purpose clamping margin |
Compared with BZX84C8V2LT1G, SZBZX84C8V2LT3G adds automotive qualification and higher reel quantity; compared with SZBZX84B8V2LT1G, it trades tighter tolerance for broader voltage tolerance band and lower unit cost in high-volume production.
Availability
SZBZX84C8V2LT3G is available at Aetrix Electronics and suitable for USB port protection, automotive sensor biasing, and industrial PLC input conditioning requiring stable component supply across multi-year production cycles.
Supply support for SZBZX84C8V2LT3G 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 is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
SZBZX84C8V2LT3G belongs to the SZBZX84CxxxLTxG automotive-qualified Zener regulator family, engineered for robust voltage reference and transient suppression in harsh-environment electronics.
FAQ
What is the Zener voltage tolerance of SZBZX84C8V2LT3G?
The SZBZX84C8V2LT3G has a nominal Zener voltage of 8.2 V with a tolerance of ±5%, specified as 7.7 V minimum and 8.7 V maximum at IZT = 5 mA. This tolerance reflects the standard-grade variant within the SZBZX84C series and is validated per onsemi's BZX84CxxxLT1G datasheet revision 23.
Is SZBZX84C8V2LT3G suitable for automotive applications?
Yes, SZBZX84C8V2LT3G is AEC-Q101 qualified and PPAP capable, making it suitable for automotive applications such as sensor biasing, infotainment power rail clamping, and ECU voltage reference. The "SZ" prefix explicitly denotes compliance with automotive site and change control requirements.
What is the thermal resistance of SZBZX84C8V2LT3G on FR-5 board?
SZBZX84C8V2LT3G has a thermal resistance of 500 °C/W (junction-to-ambient) when mounted on FR-5 board, based on its 250 mW power rating derated at 2.0 mW/°C above 25°C. This value assumes standard JEDEC-defined board layout conditions per onsemi's maximum ratings table.
Does SZBZX84C8V2LT3G have an ESD rating?
Yes, SZBZX84C8V2LT3G is rated Class 3 for Human Body Model (HBM) ESD with >16 kV withstand capability. This allows direct integration into electrostatic-prone interfaces like USB ports and handheld device connectors without additional ESD protection components.
What is the pin configuration of SZBZX84C8V2LT3G?
SZBZX84C8V2LT3G uses the SOT-23 package with pin 1 as anode, pin 2 as no connection (NC), and pin 3 as cathode - confirmed in the mechanical outline (Style 8) and electrical characteristics tables of the official onsemi datasheet. The cathode is marked by a polarity band on the package body.
SZBZX84C8V2LT3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- SZBZX84CxxxLT1G
- 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:
- ±5%
- 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3 (TO-236)
SZBZX84C8V2LT3G FAQ
1.How can I place an order for SZBZX84C8V2LT3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZBZX84C8V2LT3G 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 SZBZX84C8V2LT3G reliable?
The price and inventory of SZBZX84C8V2LT3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZBZX84C8V2LT3G is usually 5 days.
3.What payment methods are accepted for SZBZX84C8V2LT3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZBZX84C8V2LT3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZBZX84C8V2LT3G?
SZBZX84C8V2LT3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZBZX84C8V2LT3G 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 SZBZX84C8V2LT3G?
For technical support, including SZBZX84C8V2LT3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZBZX84C8V2LT3G requirements.
6.How does Aetrix verify that SZBZX84C8V2LT3G is sourced from the original manufacturer or authorized distributors?
All SZBZX84C8V2LT3G 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 SZBZX84C8V2LT3G meets industry standards.
7.What is the process for return or replacement of SZBZX84C8V2LT3G?
All SZBZX84C8V2LT3G units undergo pre-shipment inspection (PSI). If there is an issue with SZBZX84C8V2LT3G, 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 SZBZX84C8V2LT3G part is unused and in its original packaging.
Return procedure for SZBZX84C8V2LT3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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