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onsemi SZBZX84C11LT3G
- Part No.:
- SZBZX84C11LT3G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SZBZX84C11LT3G.pdf
- Description:
- DIODE ZENER 11V 250MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:9,800
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Product details
Overview
SZBZX84C11LT3G 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 DC power rails. It delivers ±5% tolerance at 5 mA test current, 20 Ω dynamic impedance, and operates across −65°C to +150°C junction temperature range. It is used in automotive body control modules for ECU voltage stabilization.
For engineers reviewing the SZBZX84C11LT3G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±5%), thermal resistance (500 °C/W on FR-5), ESD rating (>16 kV HBM), reverse leakage (<0.1 μA at 8.8 V), and AEC-Q101 qualification for automotive use.
Technical Context
This device functions as a two-terminal shunt voltage regulator with cathode-anode polarity, operating in reverse breakdown mode. Its Zener voltage is specified at 10.4–11.6 V (min–max) under 5 mA test current, with temperature coefficient of +5.4 mV/°C and capacitance of 130 pF at 0 V bias and 1 MHz.
The SOT-23 package features void-free thermosetting plastic construction, UL 94 V-0 flammability rating, and Pb-free RoHS-compliant finish. It supports automated board assembly and withstands 260°C for 10 seconds during soldering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10.4–11.6 V @ IZT = 5 mA - defines stable regulation window for 12 V rail clamping |
| Power Dissipation | 250 mW on FR-5 board - limits continuous current to ~22.7 mA at 11 V without derating |
| Zener Impedance (ZZT) | 20 Ω @ 5 mA - ensures <220 mV output variation for ±1 mA load step changes |
| Reverse Leakage Current | <0.1 μA @ VR = 8.8 V - enables low-quiescent-power standby operation |
| Temperature Coefficient | +5.4 mV/°C @ 5 mA - predicts +0.54 V drift over 100°C ambient rise |
| Capacitance | 130 pF @ VR = 0 V, f = 1 MHz - impacts high-frequency noise filtering capability |
| ESD Rating | Class 3 (>16 kV) per HBM - protects against electrostatic discharge in handling and assembly |
Pinout & Package
SOT-23 (TO-236) surface-mount plastic package, 2.90 × 1.30 × 1.00 mm, void-free thermosetting case with corrosion-resistant, solderable finish. Cathode indicated by band; maximum soldering temperature 260°C for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Connected to lower-potential side of regulated node; reverse-biased during regulation |
| 2 | No Connection | Internally unconnected; no PCB trace or pad required |
| 3 | Cathode | Connected to higher-potential supply rail; carries full Zener current during clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, lighting, and body electronics |
| ±5% Zener voltage tolerance | Enables tighter regulation than standard 10% parts, reducing need for post-regulation trimming |
| 250 mW power rating on FR-5 | Supports robust transient suppression in compact layouts without heatsinking |
| ESD >16 kV (HBM) | Eliminates need for external ESD protection in handheld and infotainment subsystems |
| Pb-free and RoHS compliant | Meets global environmental compliance requirements for automotive and industrial end equipment |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Stabilizing 12 V supply rail for microcontroller I/O and CAN transceiver biasing in door module ECUs. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 11 V clamp to prevent overvoltage damage during load dump events. Use Value: Maintains logic-level integrity under ISO 7637-2 Pulse 5a (120 V/100 ms) transients due to 250 mW dissipation and AEC-Q101 reliability. |
Use Scenario: Biasing op-amp reference inputs in 4–20 mA loop-powered pressure transmitters. IC Role / Device Role / Timing Role: Two-terminal voltage reference establishing stable 11 V reference for DAC output scaling and ADC calibration. Use Value: Enables 0.5% full-scale accuracy over −40°C to +85°C due to +5.4 mV/°C TC and low 20 Ω ZZT. |
| Consumer Portable Charger Protection | Medical Infusion Pump Power Supervision |
|
Use Scenario: Overvoltage clamping on USB-C PD input stage to protect downstream buck converter and battery management IC. IC Role / Device Role / Timing Role: Fast-response shunt protector limiting input to 11.6 V max during adapter fault conditions. Use Value: Survives repeated 15 V/100 ms surges with <0.1 μA leakage preserving standby battery life up to 12 months. |
Use Scenario: Monitoring 24 V auxiliary supply in Class II medical devices to trigger shutdown if voltage exceeds safe threshold. IC Role / Device Role / Timing Role: Precision voltage threshold detector interfaced with comparator input via resistor divider. Use Value: Provides repeatable 11.0 V trip point with ±0.3 V total error (tolerance + temp drift), meeting IEC 60601-1 leakage current limits. |
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 electrical specs but 3,000-piece tape-and-reel packaging vs. 10,000-piece for SZBZX84C11LT3G; non-automotive grade marking | Lacks SZ-prefix AEC-Q101 qualification and PPAP capability; not approved for automotive production | Select when cost-sensitive consumer designs require identical performance without automotive certification |
| SZBZX84C10LT3G | 10 V nominal Zener voltage (9.4–10.6 V range), same SOT-23 package and AEC-Q101 qualification | Used where 10 V reference is required for 3.3 V LDO feedback or microcontroller brown-out detection | Choose for systems needing lower clamping voltage while retaining automotive qualification and packaging |
Compared with BZX84C11LT1G, SZBZX84C11LT3G adds automotive qualification and higher-volume packaging; compared with SZBZX84C10LT3G, it provides 1 V higher regulation setpoint critical for 12 V rail supervision.
Availability
SZBZX84C11LT3G is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and portable power protection requiring stable component supply with AEC-Q101 assurance.
Supply support for SZBZX84C11LT3G 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.
SZBZX84C11LT3G belongs to the SZBZX84CxxxLT3G series of AEC-Q101-qualified Zener regulators, engineered for reliable voltage reference and transient suppression in harsh automotive environments.
FAQ
What is the Zener voltage tolerance of SZBZX84C11LT3G?
The SZBZX84C11LT3G 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 5 mA test current. This tolerance is confirmed in the Electrical Characteristics table on page 3 of the onsemi datasheet (Rev. 23, August 2021). The SZBZX84C11LT3G maintains this specification across its qualified operating temperature range.
Is SZBZX84C11LT3G qualified for automotive applications?
Yes, SZBZX84C11LT3G 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 stress testing for temperature cycling, humidity, mechanical shock, and ESD, making SZBZX84C11LT3G suitable for under-hood and cabin ECU use.
What is the thermal resistance of SZBZX84C11LT3G on FR-5 board?
The thermal resistance, junction-to-ambient (RJA), of SZBZX84C11LT3G is 500 °C/W when mounted on an FR-5 board, per the Maximum Ratings table on page 2 of the onsemi datasheet. This value assumes standard JEDEC test conditions and directly determines allowable power dissipation before exceeding the 150°C maximum junction temperature.
Does SZBZX84C11LT3G have a no-connect pin, and how is it identified?
Yes, SZBZX84C11LT3G has Pin 2 designated as "No Connection", as confirmed in the Pinout diagrams on pages 2 and 3 of the datasheet and the Mechanical Case Outline on page 7. Pin 1 is Anode, Pin 2 is internally unconnected, and Pin 3 is Cathode - verified across all BZX84Cxxx and SZBZX84Cxxx variants in the SOT-23 (Style 8) configuration.
What is the maximum reverse leakage current for SZBZX84C11LT3G?
The maximum reverse leakage current (IR) for SZBZX84C11LT3G is 0.1 μA at VR = 8.8 V, as listed in the Electrical Characteristics table on page 3. This value is measured at 25°C ambient and reflects the device's ability to minimize standby power loss in battery-critical applications such as automotive telematics modules.
SZBZX84C11LT3G 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)
SZBZX84C11LT3G FAQ
1.How can I place an order for SZBZX84C11LT3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZBZX84C11LT3G 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 SZBZX84C11LT3G reliable?
The price and inventory of SZBZX84C11LT3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZBZX84C11LT3G is usually 5 days.
3.What payment methods are accepted for SZBZX84C11LT3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZBZX84C11LT3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZBZX84C11LT3G?
SZBZX84C11LT3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZBZX84C11LT3G 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 SZBZX84C11LT3G?
For technical support, including SZBZX84C11LT3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZBZX84C11LT3G requirements.
6.How does Aetrix verify that SZBZX84C11LT3G is sourced from the original manufacturer or authorized distributors?
All SZBZX84C11LT3G 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 SZBZX84C11LT3G meets industry standards.
7.What is the process for return or replacement of SZBZX84C11LT3G?
All SZBZX84C11LT3G units undergo pre-shipment inspection (PSI). If there is an issue with SZBZX84C11LT3G, 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 SZBZX84C11LT3G part is unused and in its original packaging.
Return procedure for SZBZX84C11LT3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZBZX84C11LT3G Tags
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