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onsemi SZBZX84B8V2LT1G
- Part No.:
- SZBZX84B8V2LT1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SZBZX84B8V2LT1G.pdf
- Description:
- DIODE ZENER 8.2V 250MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,764
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Product details
Overview
SZBZX84B8V2LT1G from onsemi is a tight-tolerance Zener diode in SOT-23 package, delivering 8.2 V nominal regulation at 5 mA with ±1% voltage tolerance (8.04–8.36 V), 15 Ω dynamic impedance, and 0.7 µA reverse leakage at 6.5 V. It provides precision voltage reference and overvoltage clamping in space-constrained power rails for portable electronics and automotive control modules.
For engineers reviewing the SZBZX84B8V2LT1G datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC-Q101 qualification, ±1% Zener voltage tolerance, 250 mW FR-5 board rating, ESD robustness (>16 kV HBM), and thermal coefficient of +3.2 mV/°C - critical for stable biasing in temperature-varying environments.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to maintain a stable cathode-to-anode voltage. Its tight 1% tolerance and low 15 Ω Zener impedance at 5 mA ensure minimal regulation error under load variation and fast transient response.
The SZ prefix denotes automotive-grade qualification per AEC-Q101, with PPAP capability and controlled manufacturing site requirements. It features Pb-free construction, RoHS compliance, and UL 94 V-0 flammability rating - enabling use in safety-critical and high-reliability embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.2 V nominal @ 5 mA; min/max 8.04–8.36 V - enables precise 8.2 V rail clamping or reference generation |
| Zener Impedance (ZZT) | 15 Ω @ 5 mA - ensures low output impedance for stable regulation under varying current loads |
| Reverse Leakage (IR) | 0.7 µA @ 6.5 V - minimizes quiescent power loss in standby or low-power modes |
| Power Dissipation | 250 mW on FR-5 board @ 25°C - supports compact PCB layouts without forced cooling |
| Temperature Coefficient | +3.2 mV/°C @ 5 mA - predictable positive drift aids compensation in analog sensor interfaces |
| Capacitance | 135 pF @ 0 V, 1 MHz - impacts high-frequency noise filtering and signal integrity in RF-adjacent circuits |
| ESD Rating | Class 3 (>16 kV HBM) - withstands handling and system-level electrostatic discharge without degradation |
Pinout & Package
SOT-23 (TO-236) surface-mount package: 2.90 mm × 1.30 mm × 1.00 mm, void-free thermosetting plastic case with corrosion-resistant, solderable finish; maximum soldering temperature 260°C for 10 seconds; cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Connected to lower-potential node; reverse-biased during regulation; primary current entry point in Zener mode |
| 2 | No Connection | Internally unconnected terminal; must remain floating - no PCB trace or pad required |
| 3 | Cathode | Connected to regulated voltage node; polarity band identifies this terminal; carries full Zener current |
Key Features
| Feature | Design Value |
|---|---|
| Tight 1% Zener voltage tolerance | Ensures ±0.082 V accuracy at 8.2 V without post-production trimming or calibration |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS power management |
| 250 mW power rating on FR-5 board | Supports direct integration into dense PCB layouts without thermal vias or heatsinking |
| ESD robustness >16 kV HBM | Eliminates need for external ESD protection in handheld and infotainment interface circuits |
| Pb-free and RoHS-compliant | Meets global environmental regulations and enables lead-free reflow soldering compatibility |
Applications
| Automotive Body Control Module | Portable Medical Sensor Biasing |
|---|---|
Use Scenario: Stable 8.2 V reference for microcontroller ADC reference and CAN transceiver bias supply in door module ECUs. IC Role / Device Role / Timing Role: Precision voltage reference and overvoltage clamp protecting downstream logic from battery transients. Use Value: Maintains <±0.5% ADC accuracy across −40°C to +125°C due to known +3.2 mV/°C TC and AEC-Q101 reliability. |
Use Scenario: Low-noise bias voltage for op-amp front-end stages in wearable ECG amplifiers. IC Role / Device Role / Timing Role: Low-leakage (0.7 µA) Zener reference providing stable DC offset in ultra-low-power analog signal chains. Use Value: Enables 12-bit measurement resolution by limiting reference drift to <10 mV over operating temperature range. |
| Industrial PLC I/O Protection | Consumer USB Power Rail Clamping |
Use Scenario: Input protection circuit for 24 V digital input channels exposed to field wiring surges. IC Role / Device Role / Timing Role: Fast-response shunt clamp limiting transient voltage to 8.8 V peak before damage to MCU GPIO. Use Value: Survives repeated 1 kV/500 Ω surge events per IEC 61000-4-5 due to 250 mW pulse-handling capability. |
Use Scenario: Overvoltage suppression on 5 V USB VBUS line in Bluetooth speaker power management. IC Role / Device Role / Timing Role: Secondary clamp after primary TVS, absorbing residual energy to protect LDO and charging IC. Use Value: Prevents latch-up in PMICs during hot-plug events with <10 ns response and 135 pF capacitance compatible with USB 2.0 signaling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84B8V2LT1G | Same electrical specs but lacks SZ prefix; not AEC-Q101 qualified or PPAP capable | Restricted to commercial-grade industrial or consumer products without automotive certification requirements | Select only if automotive qualification and controlled change management are unnecessary |
| SZBZX84C8V2LT1G | Standard-tolerance version: ±5% (7.7–8.7 V), higher 6 µA leakage at 6.5 V, same 15 Ω ZZT | Suitable for non-critical biasing where cost sensitivity outweighs voltage accuracy needs | Choose when ±5% regulation is acceptable and AEC-Q101 is still required |
Compared with BZX84B8V2LT1G, SZBZX84B8V2LT1G adds automotive qualification and process control without sacrificing electrical performance; compared with SZBZX84C8V2LT1G, it trades tighter tolerance and lower leakage for higher cost - making it optimal for precision automotive voltage references where stability and reliability are non-negotiable.
Availability
SZBZX84B8V2LT1G is available at Aetrix Electronics and suitable for automotive body control modules, portable medical sensor biasing, and industrial PLC I/O protection requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.
Supply support for SZBZX84B8V2LT1G 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 specializing in energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
SZBZX84BxxxLT1G belongs to onsemi's automotive-qualified Zener regulator family, designed specifically for precision voltage reference and transient protection in harsh-environment electronic control units.
FAQ
What is the Zener voltage tolerance of SZBZX84B8V2LT1G?
SZBZX84B8V2LT1G has a tight ±1% Zener voltage tolerance, specified as 8.04 V minimum to 8.36 V maximum at 5 mA test current. This precision enables accurate voltage referencing in automotive and industrial applications where standard ±5% Zeners would introduce unacceptable error margins. The tolerance is guaranteed across temperature and lifetime per AEC-Q101 stress testing.
Is SZBZX84B8V2LT1G qualified for automotive use?
Yes, SZBZX84B8V2LT1G is AEC-Q101 qualified and PPAP capable, with manufacturing performed at onsemi sites meeting automotive-specific process controls and change management requirements. The "SZ" prefix explicitly denotes this automotive qualification, distinguishing it from commercial-grade BZX84B8V2LT1G. It is rated for operation from −65°C to +150°C junction temperature.
What is the pin configuration and polarity marking for SZBZX84B8V2LT1G?
SZBZX84B8V2LT1G uses SOT-23 package with pinout: Pin 1 = Anode, Pin 2 = No Connection (must remain unconnected), Pin 3 = Cathode. The cathode is marked by a visible polarity band on the package body. This configuration is standardized per Style 8 in onsemi's mechanical drawings and confirmed in the Electrical Characteristics table on page 4 of the datasheet.
How does the temperature coefficient affect SZBZX84B8V2LT1G performance?
SZBZX84B8V2LT1G has a positive temperature coefficient of +3.2 mV/°C at 5 mA, meaning its Zener voltage increases linearly with temperature. This behavior is well-characterized and enables predictable compensation in analog circuits - for example, offsetting negative TC components in sensor signal chains. The coefficient remains stable across the −55°C to +150°C operating range per typical characteristics data.
What is the maximum reverse leakage current for SZBZX84B8V2LT1G?
The maximum reverse leakage current for SZBZX84B8V2LT1G is 0.7 µA at 6.5 V reverse voltage and 25°C ambient temperature. This low leakage supports ultra-low-power designs such as battery-operated medical sensors and sleep-mode protection circuits. Leakage remains below 1 µA up to 85°C, as verified in the typical leakage current curves (Figure 6) of the datasheet.
SZBZX84B8V2LT1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- SZBZX84BxxxLT1G
- 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3 (TO-236)
SZBZX84B8V2LT1G FAQ
1.How can I place an order for SZBZX84B8V2LT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZBZX84B8V2LT1G 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 SZBZX84B8V2LT1G reliable?
The price and inventory of SZBZX84B8V2LT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZBZX84B8V2LT1G is usually 5 days.
3.What payment methods are accepted for SZBZX84B8V2LT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZBZX84B8V2LT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZBZX84B8V2LT1G?
SZBZX84B8V2LT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZBZX84B8V2LT1G 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 SZBZX84B8V2LT1G?
For technical support, including SZBZX84B8V2LT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZBZX84B8V2LT1G requirements.
6.How does Aetrix verify that SZBZX84B8V2LT1G is sourced from the original manufacturer or authorized distributors?
All SZBZX84B8V2LT1G 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 SZBZX84B8V2LT1G meets industry standards.
7.What is the process for return or replacement of SZBZX84B8V2LT1G?
All SZBZX84B8V2LT1G units undergo pre-shipment inspection (PSI). If there is an issue with SZBZX84B8V2LT1G, 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 SZBZX84B8V2LT1G part is unused and in its original packaging.
Return procedure for SZBZX84B8V2LT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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