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onsemi BZX84C36LT3
- Part No.:
- BZX84C36LT3
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C36LT3.pdf
- Description:
- DIODE ZENER 36V 225MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:20,000
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Product details
Overview
BZX84C36LT3 from onsemi is a 36 V ±5% tolerance Zener diode in SOT-23 package, rated for 225 mW power dissipation on FR-5 board, with 90 Ω dynamic impedance at 5 mA test current and 0.05 µA reverse leakage at 28.8 V. It provides precision voltage regulation in space-constrained DC biasing and reference circuits for portable electronics.
For engineers reviewing the BZX84C36LT3 datasheet, pinout, applications, or equivalent options, key selection criteria include nominal Zener voltage (36 V), tolerance (±5%), thermal resistance (556 °C/W), ESD rating (>16 kV HBM), and SOT-23 footprint compatibility with automated assembly.
Technical Context
This device operates as a two-terminal voltage reference diode with cathode-anode polarity, featuring a nominal Zener breakdown voltage of 36 V at 5 mA test current (IZT), temperature coefficient of +25.2 mV/°C, and capacitance of 70 pF at 0 V bias and 1 MHz. Its SOT-23 package has no internal connection on pin 2.
The BZX84C36LT3 delivers stable regulation across −65°C to +150°C junction temperature range, with 225 mW power rating derated linearly above 25°C (1.8 mW/°C), and meets AEC-Q101 qualification for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 34 V to 38 V at IZT = 5 mA - defines regulated output voltage range under standard test conditions |
| Power Dissipation | 225 mW on FR-5 board at 25°C - sets maximum continuous DC power handling before thermal derating applies |
| Zener Impedance (ZZT) | 90 Ω at IZT = 5 mA - determines AC voltage variation under changing load current |
| Reverse Leakage Current | 0.05 µA at VR = 28.8 V - specifies minimum off-state current in voltage-clamp applications |
| Temperature Coefficient | +25.2 mV/°C at IZT = 5 mA - quantifies voltage drift per degree Celsius for stability-critical references |
| Capacitance | 70 pF at VR = 0 V, f = 1 MHz - impacts high-frequency noise filtering and signal integrity in RF bias networks |
| ESD Rating | Class 3 (>16 kV) per Human Body Model - ensures robustness during PCB handling and automated assembly |
Pinout & Package
SOT-23 plastic surface-mount package (Case 318, Style 8), void-free thermosetting construction, corrosion-resistant finish, UL 94 V-0 flammability rating, and 260°C max soldering temperature for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Forward-biased terminal; connects to lower-potential side of regulated circuit |
| 2 | No Connection | Internally unconnected lead; must remain floating in PCB layout |
| 3 | Cathode | Zener breakdown terminal; connects to higher-potential side and defines regulated voltage node |
Key Features
| Feature | Design Value |
|---|---|
| 225 mW Power Rating | Enables use in low-power bias networks without heatsinking on standard FR-5 PCBs |
| ±5% Zener Tolerance | Supports cost-sensitive designs where tight voltage accuracy is not required |
| AEC-Q101 Qualified | Validates suitability for automotive subsystems requiring extended temperature and reliability compliance |
| Pb-Free Packaging | Meets RoHS Directive 2011/65/EU and facilitates lead-free reflow soldering processes |
| ESD >16 kV (HBM) | Reduces risk of field failure due to electrostatic discharge during manufacturing and end-use |
Applications
| DC Bias Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable gate bias voltage for MOSFET amplifiers in portable audio front-ends. IC Role / Device Role / Timing Role: Zener voltage reference establishing fixed DC operating point for amplifier stage. Use Value: 36 V regulation enables rail-to-rail headroom control while maintaining low quiescent current draw. |
Use Scenario: Protecting microcontroller I/O pins from transient voltage spikes in industrial sensor interfaces. IC Role / Device Role / Timing Role: Shunt clamping element diverting excess energy to ground during ESD events. Use Value: 90 Ω dynamic impedance ensures fast response to transients without excessive voltage overshoot. |
| Power Supply Feedback | Low-Power Voltage Monitor |
Use Scenario: Setting feedback threshold in adjustable DC-DC converter error amplifiers for battery-powered IoT nodes. IC Role / Device Role / Timing Role: Precision reference source for optocoupler-based isolated feedback loop. Use Value: +25.2 mV/°C temperature coefficient allows predictable compensation in wide-temperature deployments. |
Use Scenario: Detecting brown-out conditions in medical wearable devices using comparator input thresholds. IC Role / Device Role / Timing Role: Stable voltage reference enabling accurate undervoltage lockout (UVLO) detection. Use Value: 0.05 µA leakage at 28.8 V minimizes standby current impact on battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5267BLT1 | 36 V nominal, ±5% tolerance, 200 mW rating, 100 Ω ZZT at 20 mA | Higher power derating slope (2.0 mW/°C) and lower ESD rating (Class 2, >8 kV) | Select when legacy footprint compatibility with MMBZ52xx series is required and 225 mW margin is not critical |
| BZX84C36LT1G | Identical electrical specs and SOT-23 package; differs only in tape-and-reel quantity (3,000 vs. 10,000 units) | No functional difference; same AEC-Q101 qualification and Pb-free construction | Choose BZX84C36LT3 for high-volume production runs requiring reduced reel changeovers |
Compared with MMBZ5267BLT1, BZX84C36LT3 offers higher power handling and superior ESD robustness; compared with BZX84C36LT1G, it provides identical performance with optimized logistics for large-batch manufacturing.
Availability
BZX84C36LT3 is available at Aetrix Electronics and suitable for DC bias reference, overvoltage clamp, and power supply feedback applications requiring stable component supply, consistent parametric performance, and automotive-grade reliability.
Supply support for BZX84C36LT3 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 delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The BZX84CxxxLT3 series belongs to onsemi's general-purpose Zener regulator product line, designed specifically for compact, high-density voltage reference and protection functions in portable and automotive electronics.
FAQ
What is the Zener voltage tolerance of BZX84C36LT3?
The BZX84C36LT3 has a nominal Zener voltage of 36 V with a tolerance of ±5%, meaning its actual breakdown voltage falls between 34 V and 38 V when tested at 5 mA. This tolerance is specified per the BZX84CxxxLT1 series standard and confirmed in the Electrical Characteristics table on page 3 of the official datasheet.
Does BZX84C36LT3 have an internal connection on pin 2?
No, BZX84C36LT3 has no internal connection on pin 2 - it is electrically isolated and must remain unconnected in the PCB layout. The device uses only pins 1 (anode) and 3 (cathode) for operation, as explicitly stated in the Pinout section of the datasheet.
Is BZX84C36LT3 qualified for automotive applications?
Yes, BZX84C36LT3 is AEC-Q101 qualified and PPAP capable, confirming its suitability for automotive subsystems including body electronics, infotainment power rails, and sensor interface protection circuits where extended temperature operation and reliability validation are required.
What is the maximum reverse leakage current for BZX84C36LT3?
The maximum reverse leakage current for BZX84C36LT3 is 0.05 µA at a reverse voltage of 28.8 V (80% of nominal Zener voltage), as specified in the Electrical Characteristics table. This value is measured at 25°C ambient and defines the upper bound of off-state conduction in clamp or reference configurations.
Can BZX84C36LT3 be used on FR-4 PCBs?
Yes, BZX84C36LT3 is rated for 225 mW power dissipation on FR-5 board, and while FR-4 has slightly lower thermal conductivity, the device remains usable on FR-4 with appropriate derating - typical design practice reduces the 225 mW rating by ~10–15% for FR-4 to maintain safe junction temperatures.
BZX84C36LT3 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):
- 36 V
- Tolerance:
- ±6%
- Power - Max:
- 225 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 25.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3 (TO-236)
BZX84C36LT3 FAQ
1.How can I place an order for BZX84C36LT3 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C36LT3 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 BZX84C36LT3 reliable?
The price and inventory of BZX84C36LT3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C36LT3 is usually 5 days.
3.What payment methods are accepted for BZX84C36LT3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C36LT3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C36LT3?
BZX84C36LT3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C36LT3 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 BZX84C36LT3?
For technical support, including BZX84C36LT3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C36LT3 requirements.
6.How does Aetrix verify that BZX84C36LT3 is sourced from the original manufacturer or authorized distributors?
All BZX84C36LT3 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 BZX84C36LT3 meets industry standards.
7.What is the process for return or replacement of BZX84C36LT3?
All BZX84C36LT3 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C36LT3, 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 BZX84C36LT3 part is unused and in its original packaging.
Return procedure for BZX84C36LT3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C36LT3 Tags
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