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onsemi SZBZX84C3V6LT3G
- Part No.:
- SZBZX84C3V6LT3G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SZBZX84C3V6LT3G.pdf
- Description:
- DIODE ZENER 3.6V 250MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:26,281
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Product details
Overview
SZBZX84C3V6LT3G from onsemi is a 3.6 V ±5% Zener diode in SOT-23 package, rated for 250 mW power dissipation on FR-5 board, with 90 Ω dynamic impedance at 5 mA test current and −3.5 mV/°C temperature coefficient - used for precision voltage reference and overvoltage protection in portable power rails.
For engineers reviewing the SZBZX84C3V6LT3G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener tolerance (±5%), thermal coefficient, leakage current (≤1 µA @ 1 V), and SOT-23 footprint compatibility with high-density PCB layouts.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to clamp voltage at nominal 3.6 V. Its design targets low-power regulation where space and thermal constraints limit use of larger packages.
It features Class 3 ESD robustness (>16 kV HBM), Pb-free construction, and AEC-Q101 qualification - confirming suitability for automotive and industrial environments requiring stable voltage clamping under transient stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 3.4 V to 3.8 V at 5 mA - defines tight regulation window for 3.3 V rail supervision |
| Power Dissipation | 250 mW on FR-5 board - supports continuous operation without heatsinking in handheld PCBs |
| Zener Impedance | 90 Ω max at 5 mA - ensures minimal output voltage shift under load variation |
| Temp Coefficient | −3.5 mV/°C - enables predictable drift compensation in ambient-temperature-sensitive circuits |
| Leakage Current | ≤1 µA at 1 V reverse bias - preserves battery life in always-on monitoring nodes |
| Capacitance | 450 pF at 0 V - impacts high-frequency noise filtering capability in decoupling applications |
| ESD Rating | Class 3 (>16 kV HBM) - withstands handling and system-level electrostatic discharge events |
Pinout & Package
Package: SOT-23 (TO-236), 2.90 × 1.30 × 1.00 mm, void-free thermosetting plastic case with corrosion-resistant finish; cathode indicated by polarity band; UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Connected to lower-potential node (e.g., ground or regulated rail return) |
| 2 | No Connection | Internally unconnected - must remain floating; no PCB trace or pad required |
| 3 | Cathode | Connected to higher-potential node (e.g., input supply or protected circuit node) |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q101 qualified and PPAP capable - meets automotive electronics reliability requirements |
| Pb-free & RoHS compliance | Fully compliant with EU RoHS Directive - supports green manufacturing and export compliance |
| High-density packaging | SOT-23 footprint enables placement in <1.5 mm pitch layouts - ideal for compact mobile PCBs |
| Tight thermal stability | −3.5 mV/°C tempco allows accurate voltage reference across −65°C to +150°C junction range |
| Robust ESD immunity | Class 3 HBM (>16 kV) eliminates need for external ESD protection in many I/O interface designs |
Applications
| USB Power Supervision | IoT Sensor Node Reference |
|---|---|
|
Use Scenario: Monitoring 5 V USB input to detect undervoltage or overvoltage conditions before enabling downstream LDOs. IC Role / Device Role / Timing Role: Zener clamping element providing precise 3.6 V threshold for comparator input. Use Value: Enables reliable brown-out detection with ≤0.2 V hysteresis margin due to tight ±5% VZ tolerance. |
Use Scenario: Providing stable reference for ADC in battery-powered environmental sensors operating at 3.3 V. IC Role / Device Role / Timing Role: Low-current voltage reference source replacing higher-power shunt regulators. Use Value: Delivers 3.6 V reference with <1 µA leakage, extending coin-cell battery life beyond 5 years. |
| Automotive Body Control Module | Industrial PLC Input Protection |
|
Use Scenario: Clamping CAN transceiver VCC rail against load-dump transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Transient voltage suppressor placed between regulator output and microcontroller supply pin. Use Value: Withstands >16 kV ESD and clamps spikes within 3.4–3.8 V window, preventing MCU reset or latch-up. |
Use Scenario: Protecting analog input channels from field-wiring surges in factory automation controllers. IC Role / Device Role / Timing Role: Front-end Zener limiter in signal conditioning path ahead of op-amp buffer. Use Value: Limits input swing to safe range while maintaining <450 pF capacitance - avoids bandwidth degradation above 100 kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84C3V6LT1G | Same electrical specs but 3,000-piece tape-and-reel vs. 10,000-piece for SZBZX84C3V6LT3G; non-SZ prefix | Lacks AEC-Q101 qualification and automotive PPAP support | Select when automotive qualification is not required and smaller reels suit prototyping or low-volume production |
| SZBZX84C3V6LT1G | Identical Zener parameters and AEC-Q101 rating; differs only in reel quantity (3,000 vs. 10,000) | No functional difference - same thermal, electrical, and mechanical behavior | Choose for pilot builds or inventory flexibility where smaller reels reduce WIP and shelf-life risk |
Compared with BZX84C3V6LT1G, SZBZX84C3V6LT3G adds automotive qualification and larger reel packaging; compared with SZBZX84C3V6LT1G, it offers identical performance with optimized logistics for high-volume production runs.
Availability
SZBZX84C3V6LT3G is available at Aetrix Electronics and suitable for USB power supervision, IoT sensor node reference, and automotive body control module applications requiring stable component supply, long-term lifecycle assurance, and AEC-Q101-compliant sourcing.
Supply support for SZBZX84C3V6LT3G 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.
SZBZX84C3V6LT3G belongs to the SZBZX84CxxxLTxG automotive Zener series - engineered for high-reliability voltage regulation in safety-critical and thermally constrained environments.
FAQ
What is the Zener voltage tolerance of SZBZX84C3V6LT3G?
The SZBZX84C3V6LT3G has a nominal Zener voltage of 3.6 V with a tolerance of ±5%, meaning its actual breakdown voltage falls between 3.4 V and 3.8 V when tested at 5 mA. This tolerance is confirmed in the Electrical Characteristics table on page 3 of the onsemi datasheet. The SZBZX84C3V6LT3G maintains this specification across its full operating temperature range of −65°C to +150°C.
Is SZBZX84C3V6LT3G suitable for automotive applications?
Yes, SZBZX84C3V6LT3G is AEC-Q101 qualified and PPAP capable, making it suitable for automotive applications including body control modules, infotainment power rails, and sensor interface protection. Its construction includes Pb-free materials and meets stringent reliability testing requirements defined in the AEC standard. The SZBZX84C3V6LT3G also features Class 3 ESD immunity (>16 kV HBM), further supporting deployment in harsh vehicle environments.
What is the thermal resistance of SZBZX84C3V6LT3G on an FR-5 board?
The thermal resistance from junction to ambient (RJA) for SZBZX84C3V6LT3G is 500 °C/W when mounted on an FR-5 board, as specified in the Maximum Ratings table. This value assumes a standard 1.0 × 0.75 × 0.62 inch test board. At 25°C ambient, the device can dissipate up to 250 mW; above that temperature, derating is 2.0 mW/°C. This thermal profile makes the SZBZX84C3V6LT3G appropriate for compact, low-power PCB layouts without forced cooling.
Does SZBZX84C3V6LT3G have a no-connect pin, and how should it be handled on the PCB?
Yes, SZBZX84C3V6LT3G has Pin 2 designated as "No Connection" per the marking diagram and mechanical outline (Style 8). This terminal is internally unconnected and must remain electrically floating - no PCB trace, pad, or solder connection should be made to it. Leaving Pin 2 unconnected ensures correct device operation and avoids unintended parasitic paths. The SZBZX84C3V6LT3G pinout is strictly 1-Anode / 2-No Connection / 3-Cathode.
How does the temperature coefficient affect SZBZX84C3V6LT3G's performance in wide-temperature applications?
The SZBZX84C3V6LT3G has a temperature coefficient of −3.5 mV/°C at 5 mA, meaning its Zener voltage decreases by approximately 3.5 mV for every 1°C rise in junction temperature. Over a −40°C to +125°C ambient range, this results in a total VZ shift of about ±57.75 mV - well within its ±5% (±180 mV) tolerance band. This predictable drift allows designers to compensate in firmware or analog circuitry, and confirms the SZBZX84C3V6LT3G's suitability for industrial and automotive applications where ambient extremes are expected.
SZBZX84C3V6LT3G 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):
- 3.6 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1 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)
SZBZX84C3V6LT3G FAQ
1.How can I place an order for SZBZX84C3V6LT3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZBZX84C3V6LT3G 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 SZBZX84C3V6LT3G reliable?
The price and inventory of SZBZX84C3V6LT3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZBZX84C3V6LT3G is usually 5 days.
3.What payment methods are accepted for SZBZX84C3V6LT3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZBZX84C3V6LT3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZBZX84C3V6LT3G?
SZBZX84C3V6LT3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZBZX84C3V6LT3G 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 SZBZX84C3V6LT3G?
For technical support, including SZBZX84C3V6LT3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZBZX84C3V6LT3G requirements.
6.How does Aetrix verify that SZBZX84C3V6LT3G is sourced from the original manufacturer or authorized distributors?
All SZBZX84C3V6LT3G 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 SZBZX84C3V6LT3G meets industry standards.
7.What is the process for return or replacement of SZBZX84C3V6LT3G?
All SZBZX84C3V6LT3G units undergo pre-shipment inspection (PSI). If there is an issue with SZBZX84C3V6LT3G, 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 SZBZX84C3V6LT3G part is unused and in its original packaging.
Return procedure for SZBZX84C3V6LT3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZBZX84C3V6LT3G Tags
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