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onsemi SZBZX84C6V8LT3G
- Part No.:
- SZBZX84C6V8LT3G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SZBZX84C6V8LT3G.pdf
- Description:
- DIODE ZENER 6.8V 250MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:20,000
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Product details
Overview
SZBZX84C6V8LT3G from onsemi is a 6.8 V, ±5% tolerance Zener diode in SOT-23 package, rated for 250 mW power dissipation at 25°C on FR-4 board, with 15 Ω dynamic impedance at 5 mA test current and 2 µA reverse leakage at 5.2 V. It serves as a precision voltage reference or overvoltage clamp in low-power portable electronics.
For engineers reviewing the SZBZX84C6V8LT3G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance, thermal resistance (500 °C/W), ESD rating (>16 kV HBM), junction temperature range (−65 to +150°C), and Pb-free RoHS compliance for automotive and high-density PCB designs.
Technical Context
This device operates as a two-terminal voltage-regulating diode relying on controlled reverse-biased avalanche breakdown. Its nominal 6.8 V Zener voltage is specified at 5 mA test current (IZT), with temperature coefficient of +1.2 mV/°C ensuring stable regulation across −55°C to +150°C ambient.
The SOT-23 package features cathode-indicated polarity band, void-free thermosetting plastic case, UL 94 V-0 flammability rating, and 260°C soldering tolerance for 10 seconds-optimized for automated surface-mount assembly on high-density boards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.4–7.2 V at IZT = 5 mA; ensures stable 6.8 V reference under typical bias conditions |
| Power Dissipation | 250 mW on FR-4 board at 25°C; derates 2.0 mW/°C above ambient, limiting usable power in hot environments |
| Zener Impedance | 15 Ω max at IZT = 5 mA; maintains tight voltage regulation under varying load currents |
| Reverse Leakage | 2 µA max at VR = 5.2 V; minimizes quiescent current in battery-powered circuits |
| ESD Rating | Class 3 (>16 kV) per Human Body Model; protects against electrostatic discharge during handling and assembly |
| Junction Temp Range | −65°C to +150°C; supports operation in automotive under-hood and industrial control environments |
| Capacitance | 155 pF at VR = 0 V, f = 1 MHz; impacts high-frequency noise filtering and transient response |
Pinout & Package
SOT-23 (TO-236) package: 2.90 mm × 1.30 mm × 1.00 mm body, 1.90 mm lead pitch, void-free thermosetting plastic case with corrosion-resistant finish. Cathode indicated by polarity band.
| 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-no PCB trace or pad required |
| 3 | Cathode | Reverse-biased terminal; connects to regulated output or voltage reference node |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Qualified | Validated for automotive applications including engine control modules and infotainment power rails |
| Pb-Free & RoHS Compliant | Meets global environmental regulations; compatible with lead-free reflow profiles |
| Tight Thermal Resistance | 500 °C/W junction-to-ambient enables reliable operation without heatsinking in space-constrained layouts |
| Optimized SMT Packaging | SOT-23 footprint supports high-speed pick-and-place assembly and 10,000-unit tape-and-reel delivery (LT3G) |
| Low Capacitance | 155 pF enables use in signal-line protection and RF-adjacent voltage clamping without degrading bandwidth |
Applications
| USB Power Delivery Clamp | Automotive Sensor Reference |
|---|---|
Use Scenario: Clamping transient overvoltage on USB 2.0 data lines during hot-plug events or ESD strikes. IC Role / Device Role / Timing Role: Two-terminal shunt regulator providing fast-response voltage limiting at 6.8 V threshold. Use Value: Prevents damage to downstream PHY ICs by diverting >16 kV HBM transients while maintaining <155 pF signal path capacitance. | Use Scenario: Supplying stable 6.8 V reference to analog sensor front-ends in engine coolant temperature or pressure modules. IC Role / Device Role / Timing Role: Precision Zener reference source with +1.2 mV/°C TC, operating across −40°C to +125°C vehicle temperature range. Use Value: Enables <±1% total voltage error over full automotive temperature range due to tight 6.4–7.2 V tolerance and AEC-Q101 qualification. |
| Portable Device Battery Monitor | Industrial PLC Input Protection |
Use Scenario: Monitoring lithium-ion cell voltage via resistive divider, where reference stability directly affects state-of-charge accuracy. IC Role / Device Role / Timing Role: Low-leakage (2 µA max) Zener element establishing known reference point for ADC measurement. Use Value: Reduces measurement drift by minimizing divider current error-critical for sub-10 mV SOC resolution in wearables and medical monitors. | Use Scenario: Protecting 24 V DC digital input channels in programmable logic controllers from surges and miswiring. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed before optocoupler input stage to limit transient energy. Use Value: Absorbs repetitive 250 mW pulses without degradation, extending system lifetime in factory automation environments with frequent EMI exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84C6V8LT3G | Same 6.8 V nominal, ±5% tolerance, SOT-23, but non-automotive grade; no AEC-Q101 qualification | Lacks PPAP support and automotive lifecycle documentation; unsuitable for Tier-1 automotive BOMs | Select when cost sensitivity outweighs automotive qualification requirements |
| SZBZX84B6V8LT1G | Tighter ±2% tolerance (6.66–6.94 V), same AEC-Q101 qualification, but 3,000-unit tape-and-reel packaging | Better voltage accuracy for precision references; lower volume packaging increases unit cost in high-volume production | Select when tighter regulation tolerance is required and smaller reels are acceptable |
Compared with SZBZX84C6V8LT3G, BZX84C6V8LT3G offers identical electrical specs but lacks automotive qualification, while SZBZX84B6V8LT1G improves voltage tolerance at the cost of packaging scalability-making SZBZX84C6V8LT3G optimal for cost-sensitive, high-volume automotive and industrial applications requiring validated reliability and 10,000-unit reel logistics.
Availability
SZBZX84C6V8LT3G is available at Aetrix Electronics and suitable for automotive power management, portable electronics voltage clamping, and industrial sensor reference circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SZBZX84C6V8LT3G 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 (formerly ON Semiconductor) is a global semiconductor manufacturer specializing in energy-efficient power management, analog, sensors, and connectivity solutions for automotive, industrial, cloud, and IoT markets.
SZBZX84C6V8LT3G belongs to the SZBZX84CxxxLTxG automotive Zener series-designed specifically for high-reliability voltage regulation in safety-critical and thermally demanding environments where AEC-Q101 validation and PPAP capability are mandatory.
FAQ
What is the maximum power dissipation of SZBZX84C6V8LT3G at 85°C ambient temperature?
SZBZX84C6V8LT3G has a 250 mW rating at 25°C, derating linearly at 2.0 mW/°C above that. At 85°C ambient, derating is (85 − 25) × 2.0 = 120 mW, so maximum allowable power is 250 − 120 = 130 mW. This ensures safe operation without exceeding junction temperature limits in compact enclosures or stacked PCBs.
Is SZBZX84C6V8LT3G pin-compatible with standard BZX84C6V8 variants?
Yes, SZBZX84C6V8LT3G uses the identical SOT-23 package with Pin 1 = Anode, Pin 2 = No Connection, Pin 3 = Cathode-matching all BZX84CxxxLTxG and SZBZX84CxxxLTxG family members. The SZ prefix denotes automotive qualification and unique site controls, not mechanical or electrical differences.
What does the "LT3G" suffix indicate in SZBZX84C6V8LT3G?
The "LT3G" suffix specifies tape-and-reel packaging with 10,000 units per reel and Pb-free (RoHS-compliant) construction. "L" denotes lead-free, "T" indicates tape-and-reel, "3" means 10,000-unit quantity, and "G" confirms RoHS compliance-distinguishing it from LT1G (3,000-unit) variants.
Can SZBZX84C6V8LT3G be used in place of a 6.8 V Zener in an existing design originally using BZX84C6V8LT1G?
Yes-SZBZX84C6V8LT3G shares identical electrical characteristics, thermal performance, and pinout with BZX84C6V8LT1G. The only differences are automotive qualification (AEC-Q101), PPAP capability, and packaging quantity (10k vs. 3k reel). No layout or schematic changes are needed for drop-in replacement in qualified designs.
What is the Zener voltage temperature coefficient of SZBZX84C6V8LT3G, and how does it affect regulation accuracy?
SZBZX84C6V8LT3G has a nominal temperature coefficient of +1.2 mV/°C at IZT = 5 mA. Over a −40°C to +125°C range (165°C delta), this contributes ±0.2 V drift-within its ±0.4 V tolerance band (6.4–7.2 V). This makes it suitable for applications where absolute accuracy is secondary to robustness and qualification.
SZBZX84C6V8LT3G 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):
- 6.8 V
- Tolerance:
- ±6%
- 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3 (TO-236)
SZBZX84C6V8LT3G FAQ
1.How can I place an order for SZBZX84C6V8LT3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZBZX84C6V8LT3G 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 SZBZX84C6V8LT3G reliable?
The price and inventory of SZBZX84C6V8LT3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZBZX84C6V8LT3G is usually 5 days.
3.What payment methods are accepted for SZBZX84C6V8LT3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZBZX84C6V8LT3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZBZX84C6V8LT3G?
SZBZX84C6V8LT3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZBZX84C6V8LT3G 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 SZBZX84C6V8LT3G?
For technical support, including SZBZX84C6V8LT3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZBZX84C6V8LT3G requirements.
6.How does Aetrix verify that SZBZX84C6V8LT3G is sourced from the original manufacturer or authorized distributors?
All SZBZX84C6V8LT3G 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 SZBZX84C6V8LT3G meets industry standards.
7.What is the process for return or replacement of SZBZX84C6V8LT3G?
All SZBZX84C6V8LT3G units undergo pre-shipment inspection (PSI). If there is an issue with SZBZX84C6V8LT3G, 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 SZBZX84C6V8LT3G part is unused and in its original packaging.
Return procedure for SZBZX84C6V8LT3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZBZX84C6V8LT3G Tags
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