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onsemi SZBZX84C11LT1G
- Part No.:
- SZBZX84C11LT1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SZBZX84C11LT1G.pdf
- Description:
- DIODE ZENER 11V 250MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:7,615
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Product details
Overview
SZBZX84C11LT1G from onsemi is a 250 mW, 11 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 (10.4–11.6 V at 5 mA), 20 Ω dynamic impedance, and operates across −65°C to +150°C with AEC-Q101 qualification for automotive use.
For engineers reviewing the SZBZX84C11LT1G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage accuracy at 5 mA, thermal stability (5.4 mV/°C tempco), low leakage (<0.1 µA @ 8.8 V), and Pb-free SOT-23 compatibility with automated assembly.
Technical Context
This device functions as a two-terminal shunt voltage regulator, maintaining stable output by conducting reverse current when applied voltage exceeds its Zener breakdown threshold. Its operation relies on controlled avalanche and Zener mechanisms depending on voltage level, with dominant Zener behavior below ~5.6 V and mixed/avalanche dominance above - confirmed by its positive temperature coefficient (+5.4 mV/°C) at 11 V.
The SOT-23 package supports high-density PCB layouts and features cathode-indicated polarity banding, UL 94 V-0 flammability rating, and 260°C soldering tolerance. It is rated for 250 mW dissipation on FR-5 board with 500°C/W junction-to-ambient thermal resistance, and achieves ESD robustness >16 kV HBM per Class 3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10.4–11.6 V at IZT = 5 mA - defines regulated reference range under standard test conditions |
| Zener Impedance (ZZT) | 20 Ω max at IZT = 5 mA - determines regulation stiffness and output voltage variation under load changes |
| Reverse Leakage Current | <0.1 µA at VR = 8.8 V - ensures minimal standby power loss in bias/reference circuits |
| Temperature Coefficient | +5.4 mV/°C at IZT = 5 mA - quantifies voltage drift over temperature; enables compensation design |
| Capacitance | 130 pF at VR = 0 V, f = 1 MHz - impacts high-frequency noise filtering and transient response |
| Power Dissipation | 250 mW on FR-5 board - sets maximum continuous DC or pulsed power handling in standard layout |
| ESD Rating | Class 3 (>16 kV HBM) - ensures robustness against human-body model electrostatic discharge during handling |
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; pin 2 is internally unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Connected to lower-potential node; reverse-biased during regulation; carries full Zener current |
| 2 | No Connection | Internally isolated; no electrical function; must remain floating on PCB |
| 3 | Cathode | Connected to higher-potential node; voltage reference output point; marked by polarity band |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics requiring PPAP compliance |
| Pb-free & RoHS compliant | Meets global environmental regulations; compatible with lead-free reflow profiles up to 260°C |
| Tight thermal stability | +5.4 mV/°C tempco enables predictable voltage drift in wide-temperature industrial environments |
| Low capacitance (130 pF) | Minimizes signal coupling and phase shift in high-speed reference or clamping circuits |
| High ESD immunity (>16 kV HBM) | Reduces need for external protection in handheld and portable designs exposed to user handling |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable 11 V reference for microcontroller ADC inputs monitoring battery voltage and lamp status. IC Role / Device Role / Timing Role: Shunt voltage reference regulating supply rail for analog front-end circuitry. Use Value: Maintains <±1% reference accuracy over −40°C to +125°C ambient, enabling reliable fault detection without calibration drift. |
Use Scenario: Clamping and protecting 12 V sensor interface lines from transients in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Overvoltage protection element limiting input voltage to downstream op-amps and ADC drivers. Use Value: Responds within nanoseconds to 100 V spikes while dissipating <250 mW peak energy, preserving signal integrity. |
| Portable Medical Device Power Monitoring | 5G Small Cell Baseband Reference |
Use Scenario: Generating precise bias voltage for low-power analog health sensors (ECG, SpO₂) in battery-operated wearables. IC Role / Device Role / Timing Role: Low-current Zener reference supplying stable 11 V to ultra-low-quiescent LDOs. Use Value: Draws only 0.1 µA leakage at 8.8 V, extending battery life in always-on monitoring modes. |
Use Scenario: Stabilizing local oscillator supply rails in RF front-end subsystems where voltage ripple causes phase noise degradation. IC Role / Device Role / Timing Role: Noise-suppressing shunt regulator filtering supply-induced jitter on clock distribution paths. Use Value: 130 pF capacitance and 20 Ω impedance suppress sub-100 MHz supply noise without destabilizing feedback loops. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84C11LT1G | Same Zener voltage range (10.4–11.6 V), identical SOT-23 package, but lacks AEC-Q101 qualification and automotive traceability. | Approved for commercial/industrial use only; not suitable for automotive production or PPAP-controlled programs. | Select when cost sensitivity outweighs automotive compliance requirements and lifecycle traceability is not mandated. |
| SZBZX84C10LT1G | 10 V nominal Zener (9.4–10.6 V), same AEC-Q101 rating, 20 Ω ZZT, 130 pF capacitance, and SOT-23 footprint. | Provides tighter regulation margin for 10 V logic interfaces or legacy 10 V reference systems requiring automotive qualification. | Choose when system-level voltage tolerance requires 10 V instead of 11 V, with identical reliability and packaging constraints. |
Compared with BZX84C11LT1G and SZBZX84C10LT1G, SZBZX84C11LT1G uniquely satisfies automotive-grade voltage reference needs at 11 V while maintaining identical thermal, mechanical, and ESD performance - making it the only drop-in option for AEC-Q101-compliant 11 V regulation.
Availability
SZBZX84C11LT1G is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, portable medical devices, and 5G baseband reference circuits requiring stable component supply with full AEC-Q101 traceability and long-term lifecycle support.
Supply support for SZBZX84C11LT1G 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 supplier specializing in energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
SZBZX84CxxxLT1G belongs to onsemi's AEC-Q101-qualified Zener regulator family, engineered specifically for automotive and high-reliability applications demanding tight voltage tolerance, extended temperature operation, and robust ESD immunity.
FAQ
What is the Zener voltage tolerance of SZBZX84C11LT1G at 5 mA test current?
The SZBZX84C11LT1G has a nominal Zener voltage of 11 V with a tolerance of ±5%, specified as 10.4 V minimum to 11.6 V maximum at IZT = 5 mA and TA = 25°C. This tolerance remains valid across its full operating temperature range and is verified per AEC-Q101 stress testing protocols.
Is SZBZX84C11LT1G pin-compatible with non-automotive BZX84C11LT1G?
Yes, SZBZX84C11LT1G shares identical SOT-23 pinout (pin 1: anode, pin 2: no connection, pin 3: cathode), mechanical dimensions, and thermal characteristics with BZX84C11LT1G. The SZ prefix denotes automotive qualification and enhanced process controls - no PCB layout change is required for migration.
What is the maximum power dissipation of SZBZX84C11LT1G on a standard FR-5 PCB?
SZBZX84C11LT1G is rated for 250 mW total power dissipation on FR-5 board at TA = 25°C, derating linearly by 2.0 mW/°C above that temperature. This rating assumes proper copper pour and thermal relief design per onsemi's recommended layout guidelines in the datasheet.
Does SZBZX84C11LT1G support lead-free reflow soldering processes?
Yes, SZBZX84C11LT1G is Pb-free and RoHS compliant, qualified for lead-free reflow with peak temperature up to 260°C for 10 seconds. Its thermosetting plastic case and corrosion-resistant finish ensure reliability under IPC-J-STD-020 moisture sensitivity level 1 conditions.
How does the temperature coefficient of SZBZX84C11LT1G affect its voltage stability?
SZBZX84C11LT1G exhibits a +5.4 mV/°C temperature coefficient at IZT = 5 mA, meaning its Zener voltage increases by approximately 5.4 mV per degree Celsius rise. This predictable positive drift allows designers to compensate reference circuits in wide-temperature applications such as automotive under-hood electronics.
SZBZX84C11LT1G 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):
- 11 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 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)
SZBZX84C11LT1G FAQ
1.How can I place an order for SZBZX84C11LT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZBZX84C11LT1G 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 SZBZX84C11LT1G reliable?
The price and inventory of SZBZX84C11LT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZBZX84C11LT1G is usually 5 days.
3.What payment methods are accepted for SZBZX84C11LT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZBZX84C11LT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZBZX84C11LT1G?
SZBZX84C11LT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZBZX84C11LT1G 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 SZBZX84C11LT1G?
For technical support, including SZBZX84C11LT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZBZX84C11LT1G requirements.
6.How does Aetrix verify that SZBZX84C11LT1G is sourced from the original manufacturer or authorized distributors?
All SZBZX84C11LT1G 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 SZBZX84C11LT1G meets industry standards.
7.What is the process for return or replacement of SZBZX84C11LT1G?
All SZBZX84C11LT1G units undergo pre-shipment inspection (PSI). If there is an issue with SZBZX84C11LT1G, 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 SZBZX84C11LT1G part is unused and in its original packaging.
Return procedure for SZBZX84C11LT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZBZX84C11LT1G Tags
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