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onsemi SZBZX84C36LT3
- Part No.:
- SZBZX84C36LT3
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SZBZX84C36LT3.pdf
- Description:
- DIODE ZENER 36V 250MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:40,000
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Product details
Overview
SZBZX84C36LT3 from onsemi is a 36 V ±5.6% Zener 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. It provides precision voltage regulation in space-constrained portable electronics.
For engineers reviewing the SZBZX84C36LT3 datasheet, pinout, applications, or equivalent options, key selection criteria include nominal Zener voltage tolerance (±5.6%), thermal coefficient (+25.2 mV/°C), ESD robustness (>16 kV HBM), and Pb-free SOT-23 packaging compatibility with automated assembly.
Technical Context
This device operates as a two-terminal voltage reference diode with cathode-anode polarity, requiring no external bias circuitry. Its Zener breakdown is specified at three test currents (2 mA, 5 mA, 20 mA), enabling stable regulation across varying load conditions.
The junction temperature range spans −65°C to +150°C, and its −2.0 to +7.0 mV/°C temperature coefficient envelope ensures predictable drift behavior in automotive and industrial environments where ambient extremes occur.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 34 V to 38 V at 5 mA - defines regulated output voltage window under standard test condition |
| Power Dissipation | 225 mW on FR-5 board at 25°C - sets maximum continuous power handling before thermal derating begins |
| Zener Impedance | 90 Ω at 5 mA - determines output voltage stability under small-signal AC load variations |
| Reverse Leakage | 0.05 μA at 28.8 V - ensures minimal quiescent current draw in standby or low-power modes |
| Capacitance | 70 pF at 0 V, 1 MHz - impacts high-frequency noise filtering and signal integrity in RF-adjacent circuits |
| ESD Rating | Class 3 (>16 kV HBM) - enables direct handling without special ESD precautions during board assembly |
| Thermal Coefficient | +25.2 mV/°C at 5 mA - quantifies voltage drift per degree Celsius rise in junction temperature |
Pinout & Package
SOT-23 plastic surface-mount package (Case 318, Style 8), void-free thermosetting construction with corrosion-resistant finish, rated for 260°C soldering (10 s).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Forward-biased terminal; connects to lower-potential node in regulation path |
| 2 | No Connection | Internally unconnected; must remain floating-no PCB trace or pad required |
| 3 | Cathode | Zener breakdown terminal; connects to regulated output or reference node |
Key Features
| Feature | Design Value |
|---|---|
| 225 mW FR-5 power rating | Enables compact voltage clamping in high-density PCB layouts without heatsinking |
| ESD Class 3 compliance | Eliminates need for external ESD protection in handheld and portable designs |
| AEC-Q101 qualification | Validates reliability for automotive body electronics and infotainment power rails |
| Pb-free SOT-23 package | Meets RoHS Directive 2011/65/EU and supports lead-free reflow soldering profiles |
| Tight thermal resistance | 556 °C/W junction-to-ambient allows operation up to +85°C ambient without derating |
Applications
| Portable Power Management | Automotive Sensor Reference |
|---|---|
Use Scenario: Voltage reference for ADCs in battery-powered IoT sensors with 3.3 V or 5 V supply rails. IC Role / Device Role / Timing Role: Zener diode providing stable 36 V reference for precision analog front-end scaling. Use Value: Maintains <±1% reference accuracy over −40°C to +85°C due to known TC and low leakage. |
Use Scenario: Overvoltage clamp on LIN bus transceiver power input in vehicle door modules. IC Role / Device Role / Timing Role: Protection diode limiting rail voltage to prevent IC damage during load dump events. Use Value: Absorbs transient energy up to 225 mW without degradation, validated per AEC-Q101 stress tests. |
| Industrial PLC I/O Protection | Consumer Audio DC Bias |
Use Scenario: Input protection for 24 V digital input channels exposed to field wiring surges. IC Role / Device Role / Timing Role: Shunt regulator clamping induced transients before they reach optocoupler inputs. Use Value: 90 Ω Zener impedance ensures fast response to >100 ns spikes while maintaining low standby current. |
Use Scenario: DC bias generation for Class AB headphone amplifier stages in portable media players. IC Role / Device Role / Timing Role: Stable voltage source setting quiescent operating point of output transistors. Use Value: 70 pF capacitance avoids high-frequency coupling into audio signal paths, preserving SNR >95 dB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84C36LT1 | Same electrical specs but 3,000-piece tape-and-reel vs. 10,000-piece for SZBZX84C36LT3; non-SZ prefix indicates standard commercial grade | Lacks AEC-Q101 qualification and site-control requirements for automotive use | Select when cost sensitivity outweighs automotive qualification needs and volume demand fits 3k reels |
| SZBZX84C36LT3G | Identical electrical and mechanical specs; "G" suffix confirms Pb-free plating per J-STD-609 | No functional difference; used where explicit Pb-free compliance documentation is contractually mandated | Choose when RoHS certificate of compliance or material declaration is required for final product certification |
Compared with SZBZX84C36LT3, BZX84C36LT1 offers identical regulation performance but lacks automotive qualification and larger reel size, while SZBZX84C36LT3G adds formal Pb-free verification without altering electrical behavior-making SZBZX84C36LT3 optimal for AEC-Q101–required designs needing 10k reel efficiency.
Availability
SZBZX84C36LT3 is available at Aetrix Electronics and suitable for portable power management, automotive sensor reference, and industrial PLC I/O protection requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SZBZX84C36LT3 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 (Nasdaq: ON) is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
SZBZX84C36LT3 belongs to the BZX84CxxxLT1 family of Zener regulators designed specifically for high-density, low-power voltage reference and overvoltage protection in space-constrained portable and automotive systems.
FAQ
What is the Zener voltage tolerance of SZBZX84C36LT3?
The SZBZX84C36LT3 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. This tolerance is confirmed in the Electrical Characteristics table on page 3 of the official onsemi datasheet (Rev. 14, November 2011). The SZBZX84C36LT3 maintains this specification across its qualified operating temperature range.
Does SZBZX84C36LT3 require a current-limiting resistor in series?
Yes, SZBZX84C36LT3 requires an external series current-limiting resistor to set the operating Zener current within its specified range (2 mA to 20 mA). Without it, excessive current could exceed the 225 mW power rating and cause thermal failure. The resistor value is calculated using (VIN − 36 V)/IZ, where IZ is selected based on desired regulation stability and power dissipation limits for the SZBZX84C36LT3.
Is SZBZX84C36LT3 compatible with lead-free reflow soldering processes?
Yes, SZBZX84C36LT3 is Pb-free and qualified for lead-free reflow soldering per J-STD-020. Its package withstands peak temperatures up to 260°C for 10 seconds, matching standard Pb-free reflow profiles. The device marking includes no Pb indicator, and its construction uses thermosetting plastic with corrosion-resistant finish-both verified in the Mechanical Characteristics section of the onsemi datasheet for SZBZX84C36LT3.
What is the maximum reverse leakage current for SZBZX84C36LT3?
The maximum reverse leakage current for SZBZX84C36LT3 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 low leakage ensures minimal power loss in battery-critical applications and supports reliable operation in high-impedance reference circuits where current draw must be sub-nanoampere.
Can SZBZX84C36LT3 be used in automotive applications?
Yes, SZBZX84C36LT3 is AEC-Q101 qualified and PPAP capable, making it suitable for automotive applications including body control modules, sensor interfaces, and infotainment power rails. Its junction temperature range (−65°C to +150°C), ESD robustness (>16 kV HBM), and process-controlled manufacturing meet automotive reliability requirements-explicitly stated in the Features section of the onsemi datasheet for SZBZX84C36LT3.
SZBZX84C36LT3 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)
SZBZX84C36LT3 FAQ
1.How can I place an order for SZBZX84C36LT3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SZBZX84C36LT3 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 SZBZX84C36LT3 reliable?
The price and inventory of SZBZX84C36LT3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZBZX84C36LT3 is usually 5 days.
3.What payment methods are accepted for SZBZX84C36LT3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZBZX84C36LT3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZBZX84C36LT3?
SZBZX84C36LT3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZBZX84C36LT3 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 SZBZX84C36LT3?
For technical support, including SZBZX84C36LT3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZBZX84C36LT3 requirements.
6.How does Aetrix verify that SZBZX84C36LT3 is sourced from the original manufacturer or authorized distributors?
All SZBZX84C36LT3 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 SZBZX84C36LT3 meets industry standards.
7.What is the process for return or replacement of SZBZX84C36LT3?
All SZBZX84C36LT3 units undergo pre-shipment inspection (PSI). If there is an issue with SZBZX84C36LT3, 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 SZBZX84C36LT3 part is unused and in its original packaging.
Return procedure for SZBZX84C36LT3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZBZX84C36LT3 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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onsemi
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