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onsemi SZBZX84C36LT1
- Part No.:
- SZBZX84C36LT1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SZBZX84C36LT1.pdf
- Description:
- DIODE ZENER 36V 250MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:57,000
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Product details
Overview
SZBZX84C36LT1 from onsemi is a 36 V ±5.6% Zener voltage regulator diode in SOT-23 package, rated for 225 mW power dissipation at 25°C on FR-5 board, with 90 Ω dynamic impedance at 5 mA test current and 0.05 μA reverse leakage at 28.8 V, used for precision voltage reference and overvoltage protection in portable power rails.
For engineers reviewing the SZBZX84C36LT1 datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±5.6%), thermal coefficient (+25.2 mV/°C), junction-to-ambient thermal resistance (556 °C/W), and AEC-Q101 qualification status for automotive-grade reliability.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining stable output voltage across its cathode-anode terminals under varying load conditions via controlled reverse breakdown. Its 36 V nominal Zener voltage is specified at 5 mA test current (IZT), with dynamic impedance measured at both 1 mA and 20 mA to characterize regulation performance across operating ranges.
The diode features a temperature coefficient of +25.2 mV/°C at IZT = 5 mA, indicating positive drift with rising temperature, and exhibits 70 pF capacitance at 0 V bias and 1 MHz - critical for high-frequency noise suppression in low-power analog circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 34 V to 38 V at 5 mA - defines regulated output range for reference or clamping |
| Power Dissipation | 225 mW on FR-5 board at 25°C - sets maximum continuous power handling before thermal derating |
| Zener Impedance | 90 Ω at 5 mA - determines voltage regulation stability under load transients |
| Reverse Leakage | 0.05 μA at 28.8 V - ensures minimal quiescent current in standby mode |
| Temperature Coefficient | +25.2 mV/°C at 5 mA - quantifies voltage drift per degree Celsius for thermal design margining |
| Capacitance | 70 pF at 0 V, 1 MHz - impacts high-frequency bypass and EMI filtering capability |
| ESD Rating | Class 3 (>16 kV HBM) - supports robust handling in automated assembly and field operation |
Pinout & Package
SOT-23 plastic surface-mount package (Case 318, Style 8), void-free thermosetting epoxy body with corrosion-resistant finish, 260°C soldering tolerance for 10 seconds, cathode indicated by polarity band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Connected to lower-potential node; reverse-biased during regulation |
| 2 | No Connection | Internally unconnected; electrically isolated from die |
| 3 | Cathode | Connected to higher-potential node; carries regulated output current |
Key Features
| Feature | Design Value |
|---|---|
| Automated assembly optimized package | SOT-23 footprint enables high-speed pick-and-place placement on dense PCBs |
| Tight thermal resistance control | 556 °C/W junction-to-ambient allows predictable thermal rise in compact layouts |
| AEC-Q101 qualification | Validated for automotive applications including infotainment power supplies and sensor biasing |
| Pb-free construction | SZ prefix and "G" suffix confirm RoHS-compliant lead-free termination and packaging |
| High-density form factor | 2.9 mm × 1.3 mm × 1.0 mm body size supports miniaturized battery-powered designs |
Applications
| Smartphone Power Management | Automotive Cabin Sensors |
|---|---|
Use Scenario: Regulating auxiliary 3.3 V rail from switched-mode converter output in smartphone PMIC subsystem. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable feedback point for DC-DC error amplifier. Use Value: 36 V rating allows safe clamping of transient spikes up to 28.8 V while maintaining <0.05 μA leakage to preserve battery life. | Use Scenario: Providing precise bias voltage for MEMS pressure sensor signal conditioning in HVAC control module. IC Role / Device Role / Timing Role: Two-terminal voltage reference establishing known operating point for op-amp input stage. Use Value: +25.2 mV/°C TC enables predictable compensation in wide-temperature cabin environments (−40°C to +105°C). |
| Industrial IoT Node Power | USB-C PD Protection Circuit |
Use Scenario: Clamping surge-induced overvoltage on 24 V industrial fieldbus interface line. IC Role / Device Role / Timing Role: Transient voltage suppressor diverting ESD and lightning-induced energy to ground. Use Value: Class 3 HBM ESD rating (>16 kV) and 225 mW dissipation handle repeated 8 kV contact discharges without degradation. | Use Scenario: Protecting USB-C port CC line from 20 V fault conditions during power role swap. IC Role / Device Role / Timing Role: Overvoltage clamp limiting CC line voltage to prevent PHY damage during negotiation. Use Value: 34–38 V Zener range ensures reliable clamping above 20 V fault threshold while avoiding false triggering during normal 5 V signaling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84C36LT1 | Same electrical specs but lacks SZ prefix; not AEC-Q101 qualified | Restricted to commercial-grade consumer electronics, not automotive | Select when AEC-Q101 compliance is unnecessary and cost sensitivity is high |
| SZBZX84C36LT1G | Identical specs with Pb-free marking; same SOT-23 package and thermal performance | No functional difference; differs only in RoHS compliance documentation and traceability | Prefer for new designs requiring full environmental compliance and supply chain transparency |
Compared with BZX84C36LT1, SZBZX84C36LT1 adds AEC-Q101 qualification for automotive use, while SZBZX84C36LT1G provides identical performance with certified Pb-free construction - enabling direct substitution where regulatory or sourcing requirements differ.
Availability
SZBZX84C36LT1 is available at Aetrix Electronics and suitable for smartphone power management, automotive cabin sensors, and industrial IoT node power requiring stable component supply with guaranteed long-term continuity.
Supply support for SZBZX84C36LT1 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 computing, medical, and IoT applications.
The BZX84CxxxLT1 series is designed for space-constrained voltage regulation and overvoltage protection in portable and automotive electronics, emphasizing small-form-factor reliability and AEC-Q101 compliance.
FAQ
What is the Zener voltage tolerance of SZBZX84C36LT1?
The SZBZX84C36LT1 has a nominal Zener voltage of 36 V with a tolerance of ±5.6%, meaning the actual breakdown voltage falls between 34 V and 38 V when tested at 5 mA (IZT). This tolerance is confirmed in the Electrical Characteristics table on page 3 of the official datasheet and applies specifically to the SZBZX84C36LT1 variant within the BZX84CxxxLT1 series.
Is SZBZX84C36LT1 AEC-Q101 qualified?
Yes, SZBZX84C36LT1 is explicitly AEC-Q101 qualified and PPAP capable, as stated in the Features section of the datasheet. The "SZ" prefix denotes automotive and other applications requiring unique site and control change requirements, distinguishing it from commercial-grade BZX84C36LT1 variants that lack this qualification.
What is the thermal resistance of SZBZX84C36LT1 on FR-5 board?
The junction-to-ambient thermal resistance (RJA) of SZBZX84C36LT1 is 556 °C/W when mounted on FR-5 board, with power dissipation derated by 1.8 mW/°C above 25°C ambient. This value is specified in the Maximum Ratings table and directly impacts thermal design margins in enclosed or high-temperature environments.
Does SZBZX84C36LT1 have a connection on pin 2?
No, pin 2 of SZBZX84C36LT1 is internally unconnected (NC), as confirmed in the Pinout diagram and Electrical Characteristics notes. The device uses only pins 1 (anode) and 3 (cathode) for electrical operation; pin 2 serves no circuit function and must remain floating in PCB layout.
What is the reverse leakage current specification for SZBZX84C36LT1?
The reverse leakage current (IR) of SZBZX84C36LT1 is 0.05 μA maximum at 28.8 V (80% of nominal Zener voltage), measured at 25°C ambient. This parameter ensures minimal standby power loss in battery-critical applications and is verified in the Electrical Characteristics table under the "Max Reverse Leakage Current" column for the SZ/BZX84C36LT1, G entry.
SZBZX84C36LT1 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:
- ±5%
- 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3 (TO-236)
SZBZX84C36LT1 FAQ
1.How can I place an order for SZBZX84C36LT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SZBZX84C36LT1 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 SZBZX84C36LT1 reliable?
The price and inventory of SZBZX84C36LT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZBZX84C36LT1 is usually 5 days.
3.What payment methods are accepted for SZBZX84C36LT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZBZX84C36LT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZBZX84C36LT1?
SZBZX84C36LT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZBZX84C36LT1 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 SZBZX84C36LT1?
For technical support, including SZBZX84C36LT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZBZX84C36LT1 requirements.
6.How does Aetrix verify that SZBZX84C36LT1 is sourced from the original manufacturer or authorized distributors?
All SZBZX84C36LT1 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 SZBZX84C36LT1 meets industry standards.
7.What is the process for return or replacement of SZBZX84C36LT1?
All SZBZX84C36LT1 units undergo pre-shipment inspection (PSI). If there is an issue with SZBZX84C36LT1, 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 SZBZX84C36LT1 part is unused and in its original packaging.
Return procedure for SZBZX84C36LT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZBZX84C36LT1 Tags
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MMBZ5240B-7-F
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onsemi
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