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onsemi SZBZX84C3V6LT1
- Part No.:
- SZBZX84C3V6LT1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SZBZX84C3V6LT1.pdf
- Description:
- DIODE ZENER 3.6V 225MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:48,000
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Product details
Overview
SZBZX84C3V6LT1 from onsemi is a 3.6 V ±5% Zener voltage regulator diode in SOT-23 package, rated for 225 mW power dissipation on FR-5 board at 25°C, with 90 Ω dynamic impedance at 5 mA test current and −3.5 mV/°C temperature coefficient - used for precision low-voltage reference and overvoltage protection in portable power rails.
For engineers reviewing the SZBZX84C3V6LT1 datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±5%), thermal coefficient (−3.5 mV/°C), leakage current (≤1 μA at 1 V), junction capacitance (450 pF), and AEC-Q101 qualification status for automotive-grade reliability.
Technical Context
This device operates as a two-terminal voltage reference using avalanche breakdown in silicon PN junction, with cathode-anode polarity confirmed by marking band and pinout (Pin 1 = Anode, Pin 3 = Cathode). Its 3.6 V nominal Zener voltage is specified at 5 mA test current (IZT), with tight regulation maintained across 1 mA to 20 mA operating range.
Designed for surface-mount assembly on high-density PCBs, it features Class 3 ESD rating (>16 kV HBM), Pb-free SOT-23 package compliant with UL 94 V-0 flammability standard, and junction temperature range of −65°C to +150°C - enabling use in space-constrained, thermally demanding environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 3.6 V nominal, 3.4–3.8 V min/max at 5 mA - defines stable reference point for biasing or clamping circuits |
| Power Dissipation | 225 mW on FR-5 board at 25°C - sets maximum continuous DC power handling before thermal derating |
| Zener Impedance | 90 Ω max at 5 mA - determines output voltage stability under varying load current |
| Reverse Leakage | ≤1 μA at VR = 1 V - ensures minimal quiescent current draw in standby mode |
| Temp Coefficient | −3.5 mV/°C at 5 mA - quantifies voltage drift per degree Celsius ambient change |
| Junction Cap | 450 pF at VR = 0 V, f = 1 MHz - impacts high-frequency noise filtering and transient response |
| ESD Rating | Class 3 (>16 kV) per HBM - supports robust handling during automated assembly and field operation |
Pinout & Package
SOT-23 (Case 318-08) surface-mount plastic package with void-free thermosetting epoxy, corrosion-resistant finish, and UL 94 V-0 flammability rating. Cathode indicated by polarity band; maximum soldering temperature 260°C for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Connected to lower-potential side of regulated node; forward-biased during normal conduction |
| 2 | No Connection | Internally unconnected; must remain floating - no PCB trace or pad required |
| 3 | Cathode | Connected to higher-potential side; Zener breakdown occurs between Pins 1 and 3 |
Key Features
| Feature | Design Value |
|---|---|
| 225 mW FR-5 Power Rating | Enables compact voltage regulation without heatsinking in handheld PCB layouts |
| AEC-Q101 Qualified | Validated for automotive applications including infotainment power supplies and sensor interfaces |
| Class 3 ESD Protection | Eliminates need for external ESD suppression in consumer portables and wearables |
| Pb-Free SOT-23 Package | Meets RoHS compliance requirements while maintaining full backward compatibility |
| Tight Thermal Coefficient | −3.5 mV/°C enables predictable voltage shift across industrial temperature range |
Applications
| Smartphone Power Management | Automotive Cabin Sensors |
|---|---|
Use Scenario: Regulating 3.3 V LDO feedback divider reference in smartphone PMIC subsystems. IC Role / Device Role / Timing Role: Zener diode providing stable 3.6 V reference for voltage-setting resistors in feedback network. Use Value: Maintains ±1% output accuracy over temperature due to matched TC and low ZZT. | Use Scenario: Overvoltage clamp protecting I²C bus lines in automotive cabin temperature sensors. IC Role / Device Role / Timing Role: Transient voltage suppressor placed between SDA/SCL and ground to limit spikes to 3.8 V. Use Value: Prevents latch-up in 3.3 V logic interface with <1 μA leakage at 1 V bias. |
| Industrial IoT Node | Medical Wearable Battery Monitor |
Use Scenario: Reference voltage source for ADC input scaling in battery-powered wireless sensor nodes. IC Role / Device Role / Timing Role: Precision shunt reference generating known voltage for ratiometric measurement calibration. Use Value: Delivers 450 pF capacitance compatible with 100 kSPS sampling without signal distortion. | Use Scenario: Low-current voltage monitor for lithium coin-cell backup in patient-worn ECG patches. IC Role / Device Role / Timing Role: Zener-based threshold detector triggering low-battery alert when main supply drops below 3.4 V. Use Value: Draws only 1 μA at 1 V reverse bias, extending coin-cell life beyond 2 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84C3V6LT1 | Same electrical specs but non-automotive grade; lacks AEC-Q101 qualification and SZ prefix | Not approved for automotive production; suitable for commercial-grade consumer devices only | Select when cost sensitivity outweighs automotive qualification requirements |
| SZBZX84C3V6LT1G | Identical electrical and mechanical specs; "G" suffix denotes Pb-free variant with same SOT-23 footprint | No functional difference; fully interchangeable in RoHS-compliant designs | Prefer for new designs requiring lead-free compliance and traceability |
Compared with BZX84C3V6LT1, SZBZX84C3V6LT1 adds AEC-Q101 qualification and site control for automotive use; compared with SZBZX84C3V6LT1G, the base part lacks Pb-free certification but shares identical Zener characteristics and thermal behavior.
Availability
SZBZX84C3V6LT1 is available at Aetrix Electronics and suitable for smartphone power management, automotive cabin sensors, and industrial IoT node designs requiring stable component supply with automotive-grade reliability and long-term lifecycle support.
Supply support for SZBZX84C3V6LT1 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, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and edge applications.
SZBZX84C3V6LT1 belongs to the BZX84CxxxLT1 family of Zener regulators designed specifically for space-constrained, high-reliability voltage reference and clamping in automotive and portable electronics.
FAQ
What is the Zener voltage tolerance of SZBZX84C3V6LT1?
The SZBZX84C3V6LT1 has a nominal Zener voltage of 3.6 V with a tolerance of ±5%, meaning the actual breakdown voltage falls between 3.4 V and 3.8 V when measured at 5 mA test current and 25°C ambient temperature. This tolerance is confirmed in the Electrical Characteristics table on page 3 of the official datasheet and applies strictly to the SZBZX84C3V6LT1 variant within the BZX84C series.
Is SZBZX84C3V6LT1 qualified for automotive applications?
Yes, SZBZX84C3V6LT1 is AEC-Q101 qualified and PPAP capable, as explicitly stated in the Features section of the datasheet. The "SZ" prefix denotes automotive and other applications requiring unique site and process controls, distinguishing it from commercial-grade BZX84C3V6LT1. This qualification covers stress testing for temperature cycling, humidity, and mechanical shock relevant to automotive under-hood and cabin environments.
What is the maximum power dissipation of SZBZX84C3V6LT1 on FR-5 board?
The maximum power dissipation of SZBZX84C3V6LT1 on FR-5 board is 225 mW at 25°C ambient temperature, with a derating factor of 1.8 mW/°C above that temperature. This value is specified in the Maximum Ratings table and reflects real-world thermal performance on standard 1.0 × 0.75 × 0.62 inch FR-5 substrates - critical for thermal design in densely populated PCBs where forced airflow is absent.
Does SZBZX84C3V6LT1 have a no-connect pin, and how should it be handled on PCB?
Yes, SZBZX84C3V6LT1 has Pin 2 designated as "No Connection" per the marking diagram and Electrical Characteristics table. This terminal is internally unconnected and must remain electrically floating - no PCB trace, pad, or via should be attached to it. Leaving Pin 2 unconnected avoids unintended parasitic coupling or solder bridging that could compromise Zener regulation accuracy or ESD robustness.
What is the Zener impedance of SZBZX84C3V6LT1 at 5 mA test current?
The Zener impedance (ZZT) of SZBZX84C3V6LT1 is 90 Ω maximum at 5 mA test current (IZT), as specified in the Electrical Characteristics table on page 3. This dynamic impedance directly affects output voltage regulation under load transients - lower values indicate better ability to maintain stable voltage during current variations, making SZBZX84C3V6LT1 suitable for precision reference applications where ripple rejection matters.
SZBZX84C3V6LT1 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):
- 3.6 V
- Tolerance:
- ±5%
- Power - Max:
- 225 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)
SZBZX84C3V6LT1 FAQ
1.How can I place an order for SZBZX84C3V6LT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SZBZX84C3V6LT1 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 SZBZX84C3V6LT1 reliable?
The price and inventory of SZBZX84C3V6LT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZBZX84C3V6LT1 is usually 5 days.
3.What payment methods are accepted for SZBZX84C3V6LT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZBZX84C3V6LT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZBZX84C3V6LT1?
SZBZX84C3V6LT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZBZX84C3V6LT1 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 SZBZX84C3V6LT1?
For technical support, including SZBZX84C3V6LT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZBZX84C3V6LT1 requirements.
6.How does Aetrix verify that SZBZX84C3V6LT1 is sourced from the original manufacturer or authorized distributors?
All SZBZX84C3V6LT1 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 SZBZX84C3V6LT1 meets industry standards.
7.What is the process for return or replacement of SZBZX84C3V6LT1?
All SZBZX84C3V6LT1 units undergo pre-shipment inspection (PSI). If there is an issue with SZBZX84C3V6LT1, 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 SZBZX84C3V6LT1 part is unused and in its original packaging.
Return procedure for SZBZX84C3V6LT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZBZX84C3V6LT1 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
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MMSZ4682T1G
onsemi
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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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