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onsemi BZX84C36LT3G
- Part No.:
- BZX84C36LT3G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C36LT3G.pdf
- Description:
- DIODE ZENER 36V 250MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:6,352
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Product details
Overview
BZX84C36LT3G from onsemi is a 36 V, ±5% tolerance Zener diode in SOT-23 package, rated for 250 mW power dissipation on FR-5 board at 25°C, with 90 Ω dynamic impedance at 5 mA test current and 0.05 μA reverse leakage at 28.8 V. It provides precise voltage regulation in space-constrained power rail protection circuits.
For engineers reviewing the BZX84C36LT3G datasheet, pinout, applications, or equivalent options, key selection criteria include nominal Zener voltage (36 V), tolerance (±5%), thermal resistance (500 °C/W), ESD rating (>16 kV HBM), and SOT-23 footprint compatibility with high-density PCB layouts.
Technical Context
This device operates as a two-terminal voltage reference using controlled reverse-biased avalanche breakdown. Its Zener voltage is specified at three test currents (2 mA, 5 mA, and 20 mA), enabling stable regulation across varying load conditions. The temperature coefficient of +25.2 mV/°C ensures predictable drift behavior over −65°C to +150°C junction range.
The SOT-23 package features a defined pinout (Pin 1: Anode, Pin 2: No Connection, Pin 3: Cathode) and supports automated assembly per IPC-7351 standards. With 70 pF capacitance at 0 V bias and 1 MHz, it maintains low signal coupling in noise-sensitive analog monitoring paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 34 V to 38 V at 5 mA - defines regulated output range under standard bias |
| Power Dissipation | 250 mW on FR-5 board - sets maximum continuous power handling without heatsinking |
| Zener Impedance | 90 Ω at 5 mA - determines output voltage stability under load transients |
| Reverse Leakage | 0.05 μA at 28.8 V - ensures minimal quiescent current in standby mode |
| Capacitance | 70 pF at 0 V, 1 MHz - impacts high-frequency noise filtering capability |
| ESD Rating | Class 3 (>16 kV HBM) - enables robust handling during board assembly and field operation |
| Thermal Resistance | 500 °C/W junction-to-ambient - informs derating requirements above 25°C ambient |
Pinout & Package
SOT-23 (TO-236) surface-mount plastic package, 2.90 mm × 1.30 mm × 1.00 mm, void-free thermosetting case with corrosion-resistant finish and UL 94 V-0 flammability rating. Cathode indicated by polarity band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | Forward current entry point; connected to lower-potential side of regulated node |
| Pin 2 | No Connection | Internally unconnected; must remain floating - no PCB trace or pad required |
| Pin 3 | Cathode | Reverse-bias terminal; connects to regulated voltage rail or reference node |
Key Features
| Feature | Design Value |
|---|---|
| Pb-Free & RoHS Compliant | Meets global environmental compliance mandates without requiring process requalification |
| Tight Thermal Stability | +25.2 mV/°C tempco enables predictable voltage shift in automotive cabin or industrial enclosure environments |
| High-Density Footprint | SOT-23 package occupies <1.5 mm² PCB area - ideal for multi-rail portable power management |
| Automated Assembly Optimized | Transfer-molded case geometry and solderable finish ensure >99.9% placement yield on pick-and-place lines |
| Low Capacitance Regulation | 70 pF capacitance minimizes loading effects on 1–10 MHz clock or sensor signal paths |
Applications
| USB Power Rail Clamp | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Clamping 5 V USB VBUS line against ESD events and overvoltage transients in portable accessories. IC Role / Device Role / Timing Role: Two-terminal shunt regulator acting as voltage clamp between VBUS and GND. Use Value: Limits transient excursions to ≤38 V while dissipating ≤250 mW, protecting downstream USB PHY and LDOs. |
Use Scenario: Generating clean 3.3 V reset threshold for ARM Cortex-M microcontrollers in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Precision voltage reference feeding RC-based reset timing network. Use Value: Delivers ±5% accuracy at 5 mA, ensuring deterministic reset assertion across −40°C to +85°C operating range. |
| Industrial Sensor Signal Conditioning | Automotive Body Control Module |
Use Scenario: Stabilizing 12 V supply rail for analog front-end amplifiers in pressure/temperature sensor modules. IC Role / Device Role / Timing Role: Shunt regulator maintaining reference voltage for ADC biasing and op-amp rails. Use Value: 90 Ω Zener impedance ensures <10 mV droop under 1 mA load variation, preserving measurement accuracy. |
Use Scenario: Providing overvoltage protection on LIN bus interface power rails in door module ECUs. IC Role / Device Role / Timing Role: Transient voltage suppressor clamping supply spikes during load dump events. Use Value: Class 3 ESD rating (>16 kV HBM) and 150°C max junction temperature support AEC-Q101-compliant designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84C36LT1G | Same electrical specs but supplied in 3,000-piece tape-and-reel vs. 10,000-piece for BZX84C36LT3G | Preferred for prototyping or low-volume production where smaller reels reduce inventory overhead | Select when reel size constraints dominate procurement planning |
| MMSZ4702T1G | 36 V nominal Zener, ±5% tolerance, but 350 mW rating on FR-4 and 50 Ω impedance at 5 mA | Better regulation stability under higher load current, but larger SOD-123 footprint requires PCB redesign | Choose when improved dynamic impedance justifies layout change and higher power margin is needed |
Compared with BZX84C36LT3G, BZX84C36LT1G offers identical performance in a smaller reel format, while MMSZ4702T1G delivers lower impedance and higher power rating at the cost of larger package size and non-drop-in layout compatibility.
Availability
BZX84C36LT3G is available at Aetrix Electronics and suitable for USB power protection, microcontroller reset generation, industrial sensor biasing, and automotive body control module designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZX84C36LT3G 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 power management, analog, sensors, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The BZX84CxxxLT3G series belongs to onsemi's precision Zener voltage regulator product line, engineered for compact, high-reliability voltage reference and overvoltage protection in space-constrained portable and automotive electronics.
FAQ
What is the Zener voltage tolerance of BZX84C36LT3G?
The BZX84C36LT3G 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 confirmed in the Electrical Characteristics table on page 3 of the official onsemi datasheet, and applies across the full operating temperature range of −65°C to +150°C.
Does BZX84C36LT3G have a built-in capacitor or additional circuitry?
No, BZX84C36LT3G is a discrete two-terminal Zener diode with no integrated capacitors or auxiliary circuitry. Its 70 pF capacitance is parasitic, measured at 0 V bias and 1 MHz, and arises solely from the PN junction structure. The device contains only the Zener junction - Pin 2 is explicitly marked "No Connection" in the datasheet pinout diagram.
Can BZX84C36LT3G be used in place of BZX84C33LT3G?
BZX84C36LT3G is not a direct functional replacement for BZX84C33LT3G due to its higher nominal Zener voltage (36 V vs. 33 V) and different voltage range (34–38 V vs. 31–35 V). Substitution would alter regulation thresholds and may cause system-level overvoltage or undervoltage faults unless circuit analysis confirms acceptable margin - always verify with actual load and transient conditions.
What is the maximum reverse leakage current for BZX84C36LT3G?
The maximum reverse leakage current for BZX84C36LT3G is 0.05 μA, measured at a reverse voltage of 28.8 V (80% of nominal 36 V) and ambient temperature of 25°C. This value is specified in the Electrical Characteristics table on page 3 of the onsemi datasheet and reflects worst-case leakage under defined test conditions.
Is BZX84C36LT3G qualified for automotive applications?
The BZX84C36LT3G itself is not AEC-Q101 qualified; however, the SZBZX84C36LT3G variant (with "SZ" prefix) is explicitly stated as AEC-Q101 qualified and PPAP capable. For automotive use, designers must select the SZ-prefixed part - BZX84C36LT3G is intended for industrial and commercial applications per onsemi's ordering information and qualification statements.
BZX84C36LT3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- BZX84CxxxLT1G
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 36 V
- Tolerance:
- ±6%
- Power - Max:
- 250 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)
BZX84C36LT3G FAQ
1.How can I place an order for BZX84C36LT3G through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C36LT3G 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 BZX84C36LT3G reliable?
The price and inventory of BZX84C36LT3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C36LT3G is usually 5 days.
3.What payment methods are accepted for BZX84C36LT3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C36LT3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C36LT3G?
BZX84C36LT3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C36LT3G 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 BZX84C36LT3G?
For technical support, including BZX84C36LT3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C36LT3G requirements.
6.How does Aetrix verify that BZX84C36LT3G is sourced from the original manufacturer or authorized distributors?
All BZX84C36LT3G 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 BZX84C36LT3G meets industry standards.
7.What is the process for return or replacement of BZX84C36LT3G?
All BZX84C36LT3G units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C36LT3G, 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 BZX84C36LT3G part is unused and in its original packaging.
Return procedure for BZX84C36LT3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C36LT3G Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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