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onsemi SZBZX84C11LT1
- Part No.:
- SZBZX84C11LT1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SZBZX84C11LT1.pdf
- Description:
- DIODE ZENER 11V 225MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:105,000
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Product details
Overview
SZBZX84C11LT1 from onsemi is a 11 V ±5.5% (10.4–11.6 V) Zener diode in SOT-23 package, rated for 225 mW power dissipation on FR-5 board at 25°C, with 20 Ω dynamic impedance at 5 mA test current and 0.1 µA reverse leakage at 8.8 V, used for voltage regulation in space-constrained portable electronics.
For engineers reviewing the SZBZX84C11LT1 datasheet, pinout, applications, or equivalent options, key selection criteria include nominal Zener voltage tolerance, thermal resistance (556 °C/W), ESD rating (>16 kV HBM), junction temperature range (−65 to +150°C), and Pb-free SOT-23 packaging compatibility with automated assembly.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to clamp voltage at its specified Zener voltage. It exhibits a positive temperature coefficient of +5.4 mV/°C at 5 mA, enabling predictable drift compensation in bias networks.
Its SOT-23 package features a defined pinout (Anode–NC–Cathode), with terminal 2 internally unconnected and electrically isolated. The device meets AEC-Q101 qualification for automotive-grade reliability and supports Pb-free reflow soldering up to 260°C for 10 seconds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10.4–11.6 V @ IZT = 5 mA - defines regulated output voltage window under standard test conditions |
| Power Dissipation | 225 mW on FR-5 board @ 25°C - sets maximum continuous DC power handling before thermal derating begins |
| Zener Impedance (ZZT) | 20 Ω @ IZT = 5 mA - determines AC voltage regulation stability under varying load currents |
| Reverse Leakage Current | 0.1 µA @ VR = 8.8 V - specifies minimum off-state current that affects high-impedance bias networks |
| Temperature Coefficient | +5.4 mV/°C @ IZT = 5 mA - quantifies voltage drift per degree Celsius for precision reference design |
| Capacitance | 130 pF @ VR = 0 V, f = 1 MHz - impacts high-frequency noise filtering and signal integrity in RF-coupled circuits |
| ESD Rating | Class 3 (>16 kV) per Human Body Model - ensures robustness against electrostatic discharge during handling and PCB assembly |
Pinout & Package
SOT-23 (Case 318, Style 8) surface-mount plastic package with void-free thermosetting molding, corrosion-resistant finish, and UL 94 V-0 flammability rating. Cathode identified by polarity band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Forward-biased terminal; connects to lower-potential node in reverse-regulation configuration |
| 2 | No Connection | Internally unconnected lead; must remain floating-no PCB trace or pad connection required |
| 3 | Cathode | Reverse-biased terminal; connects to higher-potential node and serves as regulated output reference point |
Key Features
| Feature | Design Value |
|---|---|
| 225 mW Power Rating on FR-5 Board | Enables compact voltage clamping in high-density PCB layouts without forced-air cooling |
| AEC-Q101 Qualified | Validated for automotive applications including engine control modules and infotainment power rails |
| Pb-Free SOT-23 Package | Complies with RoHS Directive 2011/65/EU and supports lead-free reflow profiles (260°C/10 s) |
| ESD Robustness >16 kV HBM | Eliminates need for external ESD protection in handheld and portable product designs |
| Tight Thermal Resistance Control | 556 °C/W junction-to-ambient enables accurate thermal modeling for long-term reliability prediction |
Applications
| Portable Power Rail Clamping | Microcontroller Reset Circuit |
|---|---|
|
Use Scenario: Stabilizing 12 V supply rail in Bluetooth headset PCB where space limits use of larger regulators. IC Role / Device Role / Timing Role: Zener voltage reference providing overvoltage protection and stable bias for LDO input stage. Use Value: Maintains rail within ±0.5 V tolerance across −20°C to +70°C ambient using only 2.9 mm² board area. |
Use Scenario: Generating clean 11 V reset threshold for ARM Cortex-M0 MCU in smart sensor node. IC Role / Device Role / Timing Role: Precision voltage reference triggering POR circuit when main supply crosses 11 V. Use Value: Delivers <0.1 µA leakage at 8.8 V, minimizing quiescent current in battery-powered deep-sleep mode. |
| Automotive Cabin Controller Bias | Industrial Sensor Signal Conditioning |
|
Use Scenario: Providing stable 11 V reference for op-amp biasing in HVAC control panel operating at 105°C ambient. IC Role / Device Role / Timing Role: Temperature-compensated Zener regulator maintaining reference accuracy across full AEC-Q101 temperature range. Use Value: +5.4 mV/°C TC enables predictable drift correction in analog front-end calibration algorithms. |
Use Scenario: Clamping amplifier input to prevent saturation during transient overvoltage events in 4–20 mA loop transmitter. IC Role / Device Role / Timing Role: Fast-response shunt protector limiting input swing to 11.6 V peak without latch-up. Use Value: 20 Ω Zener impedance ensures <100 mV deviation under 5 mA surge current, preserving signal fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84C11LT1 | Same Zener voltage range (10.4–11.6 V) and SOT-23 package, but lacks AEC-Q101 qualification and automotive-grade traceability. | Restricted to commercial-grade consumer electronics; not suitable for automotive production programs. | Select BZX84C11LT1 only for cost-sensitive non-automotive designs where PPAP documentation is unnecessary. |
| SZBZX84C11LT1G | Identical electrical specs and AEC-Q101 qualification; differs only in Pb-free marking suffix and RoHS-compliant plating. | No functional difference; both support same reflow profiles and thermal performance. | SZBZX84C11LT1G is preferred for new designs requiring full RoHS compliance and documented Pb-free sourcing. |
Compared with BZX84C11LT1, SZBZX84C11LT1 offers certified automotive qualification and controlled change management, while SZBZX84C11LT1G adds explicit Pb-free compliance documentation-both share identical Zener characteristics but differ in certification scope and regulatory traceability.
Availability
SZBZX84C11LT1 is available at Aetrix Electronics and suitable for portable electronics, automotive cabin controllers, and industrial sensor signal conditioning requiring stable component supply with AEC-Q101 validation and Pb-free compliance.
Supply support for SZBZX84C11LT1 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 silicon solutions for automotive, industrial, cloud computing, and IoT applications.
SZBZX84C11LT1 belongs to the BZX84CxxxLT1 family of Zener regulators designed specifically for space-constrained, high-reliability voltage reference and clamping in automotive and portable electronics.
FAQ
What is the Zener voltage tolerance of SZBZX84C11LT1?
The SZBZX84C11LT1 has a nominal Zener voltage of 11 V with a tolerance range of 10.4 V to 11.6 V at 5 mA test current, corresponding to ±5.5% variation. This tolerance is verified per the onsemi BZX84CxxxLT1 series datasheet Rev. 14, page 3, and applies under standard ambient conditions (TA = 25°C). The SZBZX84C11LT1 maintains this specification across its qualified operating temperature range.
Does SZBZX84C11LT1 have a connected pin 2?
No, pin 2 of the SZBZX84C11LT1 is internally unconnected (NC) and must remain floating on the PCB-no trace, pad, or via should be attached to it. The official pinout is Anode (pin 1), NC (pin 2), Cathode (pin 3), as confirmed in the Electrical Characteristics table on page 3 of the onsemi datasheet. Connecting pin 2 may compromise device reliability or cause unintended current paths.
Is SZBZX84C11LT1 qualified for automotive use?
Yes, SZBZX84C11LT1 is AEC-Q101 qualified and PPAP capable, as explicitly stated in the Features section of the onsemi datasheet. The "SZ" prefix denotes automotive and other applications requiring unique site and control change requirements. This qualification covers temperature cycling, humidity testing, and mechanical stress validation per AEC standards, making SZBZX84C11LT1 suitable for under-hood and cabin control modules.
What is the maximum reverse leakage current for SZBZX84C11LT1?
The maximum reverse leakage current for SZBZX84C11LT1 is 0.1 µA at VR = 8.8 V, as specified in the Electrical Characteristics table on page 3 of the onsemi datasheet. This value is measured at TA = 25°C and defines the upper bound of off-state conduction, critical for low-power bias networks and battery-operated systems where standby current must be minimized.
Can SZBZX84C11LT1 be used in high-frequency applications?
SZBZX84C11LT1 exhibits 130 pF capacitance at 0 V bias and 1 MHz, limiting its effectiveness above ~1 MHz in AC-coupled or RF-sensitive circuits. Its primary design purpose is DC/low-frequency voltage regulation and clamping-not RF signal path use. For high-frequency bypass, pairing with a ceramic capacitor is recommended; standalone use above 10 MHz is not supported by datasheet characterization.
SZBZX84C11LT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 11 V
- Tolerance:
- ±5%
- Power - Max:
- 225 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)
SZBZX84C11LT1 FAQ
1.How can I place an order for SZBZX84C11LT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SZBZX84C11LT1 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 SZBZX84C11LT1 reliable?
The price and inventory of SZBZX84C11LT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZBZX84C11LT1 is usually 5 days.
3.What payment methods are accepted for SZBZX84C11LT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZBZX84C11LT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZBZX84C11LT1?
SZBZX84C11LT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZBZX84C11LT1 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 SZBZX84C11LT1?
For technical support, including SZBZX84C11LT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZBZX84C11LT1 requirements.
6.How does Aetrix verify that SZBZX84C11LT1 is sourced from the original manufacturer or authorized distributors?
All SZBZX84C11LT1 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 SZBZX84C11LT1 meets industry standards.
7.What is the process for return or replacement of SZBZX84C11LT1?
All SZBZX84C11LT1 units undergo pre-shipment inspection (PSI). If there is an issue with SZBZX84C11LT1, 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 SZBZX84C11LT1 part is unused and in its original packaging.
Return procedure for SZBZX84C11LT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZBZX84C11LT1 Tags
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