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onsemi SZBZX84C22LT3G
- Part No.:
- SZBZX84C22LT3G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SZBZX84C22LT3G.pdf
- Description:
- DIODE ZENER 22V 250MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:8,895
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Product details
Overview
SZBZX84C22LT3G from onsemi is a 22 V ±5% Zener diode in SOT-23 package, rated for 250 mW power dissipation at 25°C, with 55 Ω dynamic impedance at 5 mA test current and 0.05 µA reverse leakage at 17.6 V. It serves as a precision voltage reference or overvoltage clamp in low-power portable electronics.
For engineers reviewing the SZBZX84C22LT3G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±5%), thermal coefficient (+15.4 mV/°C), ESD rating (>16 kV HBM), and automotive-grade AEC-Q101 qualification.
Technical Context
This device operates as a two-terminal voltage regulation element using controlled reverse-biased avalanche breakdown. Its nominal 22 V Zener voltage is specified at 5 mA test current (IZT), with dynamic impedance measured under AC conditions (IZ(AC) = 0.1 IZ(DC) at 1 kHz).
The SOT-23 package features pin 1 (anode), pin 2 (no connection), and pin 3 (cathode), with cathode polarity indicated by a band. It supports operation across −65°C to +150°C junction temperature range and meets Class 3 ESD immunity per Human Body Model.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20.8 V min / 22 V nom / 23.3 V max @ 5 mA - defines stable regulation point with ±5% tolerance |
| Power Dissipation | 250 mW on FR-5 board @ 25°C - sets maximum continuous DC power handling before thermal derating |
| Zener Impedance (ZZT) | 55 Ω @ 5 mA - determines output voltage stability under varying load current |
| Reverse Leakage Current | 0.05 µA @ 17.6 V - ensures minimal quiescent current in standby clamping applications |
| Temperature Coefficient | +15.4 mV/°C @ 5 mA - quantifies voltage drift with ambient temperature change |
| Capacitance | 85 pF @ 0 V, 1 MHz - impacts high-frequency noise filtering and transient response |
| ESD Rating | Class 3 (>16 kV) HBM - enables robustness in handheld and portable end-equipment |
Pinout & Package
SOT-23 (TO-236) surface-mount plastic package, 2.90 mm × 1.30 mm × 1.00 mm body size, void-free thermosetting case with corrosion-resistant finish, Pb-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Connected to lower-potential node in reverse-bias configuration; must be held at voltage ≤ cathode minus VZ |
| 2 | No Connection | Internally unconnected terminal; no PCB trace or solder joint required |
| 3 | Cathode | Connected to higher-potential node; polarity band on package identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including infotainment power rails and sensor biasing |
| 250 mW FR-5 rating | Enables compact voltage regulation without heatsinking in space-constrained PCBs |
| Tight thermal coefficient control | +15.4 mV/°C allows predictable voltage shift across industrial temperature range |
| High ESD immunity | Class 3 (>16 kV HBM) eliminates need for external TVS in many consumer interface circuits |
| Pb-free and RoHS compliant | Meets global environmental compliance requirements for commercial and automotive production |
Applications
| Portable Power Monitoring | Automotive Sensor Biasing |
|---|---|
Use Scenario: Monitoring battery voltage in Bluetooth earbuds during charging cycles. IC Role / Device Role / Timing Role: Zener reference for ADC input scaling and overvoltage detection circuit. Use Value: Stable 22 V reference enables accurate 0–4.2 V Li-ion battery measurement with <1% full-scale error. |
Use Scenario: Providing regulated bias voltage to MEMS pressure sensors in engine control units. IC Role / Device Role / Timing Role: Precision shunt regulator establishing clean 22 V rail for analog front-end conditioning. Use Value: AEC-Q101 qualification ensures reliable operation across −40°C to +125°C under engine bay thermal stress. |
| USB-C Port Protection | Industrial PLC Input Conditioning |
Use Scenario: Clamping transient surges on USB-C CC line during hot-plug events. IC Role / Device Role / Timing Role: Fast-response overvoltage clamp limiting CC line to safe 22 V peak. Use Value: 85 pF capacitance avoids signal integrity degradation while 0.05 µA leakage preserves low-power sleep mode. |
Use Scenario: Level-shifting and surge suppression for 24 V digital inputs in factory automation controllers. IC Role / Device Role / Timing Role: Shunt regulator absorbing induced transients on 24 V field wiring. Use Value: 250 mW rating handles repetitive 100 ns/1 kV fast transients without degradation over 10-year service life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84C22LT3G | Standard-grade version without AEC-Q101 qualification; identical electrical specs and SOT-23 pinout | Approved for commercial/industrial use only; not validated for automotive temperature cycling or humidity testing | Select when automotive qualification is unnecessary and cost sensitivity is high |
| SZBZX84C22LT1G | Same AEC-Q101 qualification and electrical specs, but supplied in 3,000-piece tape-and-reel vs. 10,000-piece for LT3G | Preferred for prototyping and low-volume production where smaller reels reduce inventory overhead | Select for NPI phases or when matching existing SMT line reel capacity constraints |
Compared with BZX84C22LT3G and SZBZX84C22LT1G, the SZBZX84C22LT3G provides identical regulation performance and automotive qualification while optimizing for high-volume automated assembly via its 10,000-unit reel packaging-reducing changeover frequency and feeder downtime in mass production.
Availability
SZBZX84C22LT3G is available at Aetrix Electronics and suitable for portable power monitoring, automotive sensor biasing, USB-C port protection, and industrial PLC input conditioning requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for SZBZX84C22LT3G 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 silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
SZBZX84C22LT3G belongs to the SZBZX84CxxxLTxG automotive Zener diode family, engineered for reliable voltage regulation in harsh environments where AEC-Q101 compliance and high ESD immunity are mandatory.
FAQ
What is the Zener voltage tolerance of SZBZX84C22LT3G?
The SZBZX84C22LT3G has a nominal Zener voltage of 22 V with a tolerance of ±5%, meaning the actual breakdown voltage falls between 20.8 V and 23.3 V when tested at 5 mA. This tolerance is confirmed in the Electrical Characteristics table on page 3 of the onsemi datasheet, and applies specifically to the SZBZX84C22LT3G variant within the SZ-prefix automotive series.
Is SZBZX84C22LT3G qualified for automotive applications?
Yes, SZBZX84C22LT3G 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, and the device is designed for operation across −65°C to +150°C junction temperature range-meeting automotive reliability standards.
What is the pin configuration of SZBZX84C22LT3G?
SZBZX84C22LT3G uses the SOT-23 package with pin 1 as anode, pin 2 as no connection (unbonded), and pin 3 as cathode-confirmed in the Marking Diagram and Mechanical Characteristics sections of the datasheet. The cathode is marked by a polarity band on the package body, and this pinout is consistent across all BZX84Cxxx and SZBZX84Cxxx variants in SOT-23.
What is the maximum power dissipation of SZBZX84C22LT3G on FR-5 board?
SZBZX84C22LT3G is rated for 250 mW total power dissipation on FR-5 board at 25°C ambient temperature, with thermal derating of 2.0 mW/°C above that temperature. This value is listed in the Maximum Ratings table on page 2 of the onsemi datasheet and applies directly to the SZBZX84C22LT3G part number.
Does SZBZX84C22LT3G have ESD protection?
Yes, SZBZX84C22LT3G has an ESD rating of Class 3 (>16 kV) per Human Body Model, as documented in the Features section of the datasheet. This level of ESD immunity is built into the device structure and does not require external components, making it suitable for direct integration into handheld and automotive interface circuits.
SZBZX84C22LT3G 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):
- 22 V
- Tolerance:
- ±6%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 55 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 15.4 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)
SZBZX84C22LT3G FAQ
1.How can I place an order for SZBZX84C22LT3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZBZX84C22LT3G 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 SZBZX84C22LT3G reliable?
The price and inventory of SZBZX84C22LT3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZBZX84C22LT3G is usually 5 days.
3.What payment methods are accepted for SZBZX84C22LT3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZBZX84C22LT3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZBZX84C22LT3G?
SZBZX84C22LT3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZBZX84C22LT3G 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 SZBZX84C22LT3G?
For technical support, including SZBZX84C22LT3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZBZX84C22LT3G requirements.
6.How does Aetrix verify that SZBZX84C22LT3G is sourced from the original manufacturer or authorized distributors?
All SZBZX84C22LT3G 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 SZBZX84C22LT3G meets industry standards.
7.What is the process for return or replacement of SZBZX84C22LT3G?
All SZBZX84C22LT3G units undergo pre-shipment inspection (PSI). If there is an issue with SZBZX84C22LT3G, 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 SZBZX84C22LT3G part is unused and in its original packaging.
Return procedure for SZBZX84C22LT3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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