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onsemi SZBZX84C62LT1
- Part No.:
- SZBZX84C62LT1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SZBZX84C62LT1.pdf
- Description:
- DIODE ZENER 62V 225MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:75,000
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Product details
Overview
SZBZX84C62LT1 from onsemi is a 62 V ±5% Zener diode in SOT-23 package, rated for 225 mW power dissipation on FR-5 board, with 215 Ω dynamic impedance at 5 mA test current and 0.05 µA reverse leakage at 43.4 V. It serves as a precision voltage reference or overvoltage clamp in low-power portable electronics.
For engineers reviewing the SZBZX84C62LT1 datasheet, pinout, applications, or equivalent options, key selection criteria include nominal Zener voltage tolerance (±5%), thermal coefficient (+43.4 mV/°C), junction-to-ambient thermal resistance (556 °C/W), and ESD robustness (Class 3, >16 kV HBM).
Technical Context
This device operates as a two-terminal voltage regulator using avalanche breakdown at 62 V nominal, with specified Zener voltage measured under pulsed 5 mA test current (IZT1) at 25°C ambient. Its temperature coefficient of +43.4 mV/°C indicates positive drift above 6 V, requiring thermal design consideration in stable reference circuits.
The SOT-23 package features cathode-indicated polarity band, void-free thermosetting plastic case, UL 94 V-0 flammability rating, and 260°C maximum soldering temperature for 10 seconds. Pin 2 is internally unconnected - only pins 1 (anode) and 3 (cathode) are electrically active.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 58–66 V @ 5 mA - defines regulation range for voltage clamping or reference use |
| Power Dissipation | 225 mW on FR-5 board - sets max continuous DC or pulsed power handling at 25°C |
| Zener Impedance (ZZT) | 215 Ω @ 5 mA - determines output voltage stability under varying load current |
| Reverse Leakage Current | 0.05 µA @ 43.4 V - ensures minimal standby current in high-impedance bias networks |
| Temperature Coefficient | +43.4 mV/°C @ 5 mA - quantifies voltage drift per degree Celsius rise in junction temperature |
| Junction Temperature Range | −65°C to +150°C - supports operation in automotive under-hood or industrial environments |
| ESD Rating | Class 3 (>16 kV HBM) - enables direct handling without special ESD controls during assembly |
Pinout & Package
SOT-23 (TO-236) surface-mount package with 3 terminals; case style 318-08, dimensions 2.90 mm × 1.30 mm × 0.95 mm (L × W × H); cathode indicated by band on terminal 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Connected to lower-potential node in reverse-biased Zener configuration; carries forward current when used as rectifier |
| 2 | No Connection | Internally isolated; no electrical function - must remain unconnected on PCB |
| 3 | Cathode | Connected to higher-potential node; polarity band identifies this terminal for correct orientation during placement |
Key Features
| Feature | Design Value |
|---|---|
| 225 mW Power Rating on FR-5 | Enables compact voltage regulation in space-constrained PCBs without heatsinking |
| ESD Robustness >16 kV HBM | Eliminates need for external ESD protection in handheld and portable designs |
| AEC-Q101 Qualified | Validated for automotive applications including infotainment power rails and sensor interfaces |
| Pb-Free (G-suffix compatible) | Meets RoHS Directive 2011/65/EU and JEDEC J-STD-020 reflow profile requirements |
| Tight Thermal Resistance Control | 556 °C/W RJA allows accurate junction temperature estimation for reliability modeling |
Applications
| Portable Power Management | Automotive Sensor Biasing |
|---|---|
Use Scenario: Voltage reference for ADC input scaling in battery-powered IoT sensors. IC Role / Device Role / Timing Role: Provides stable 62 V reference point for high-side sensing circuitry. Use Value: Enables accurate 12-bit measurement resolution despite supply variation, leveraging ±5% VZ tolerance and low 0.05 µA leakage. |
Use Scenario: Overvoltage clamp on LIN bus transceiver power rail in vehicle door modules. IC Role / Device Role / Timing Role: Shunts transient surges above 66 V to protect downstream ICs. Use Value: Survives ISO 7637-2 pulse 1a/b/c events due to AEC-Q101 qualification and 150°C TJMAX. |
| Industrial PLC Input Protection | Consumer Audio DC-DC Feedback |
Use Scenario: Input stage protection for 24 V digital I/O channels exposed to field wiring transients. IC Role / Device Role / Timing Role: Acts as crowbar element limiting voltage to 66 V peak during surge events. Use Value: Maintains clamping performance across −40°C to +85°C ambient via validated TC of +43.4 mV/°C. |
Use Scenario: Secondary-side voltage reference in isolated flyback converter for USB-C audio dongles. IC Role / Device Role / Timing Role: Sets feedback threshold for optocoupler-driven regulation loop. Use Value: Delivers stable 62 V reference with <215 Ω ZZT, minimizing output ripple under dynamic load steps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84C62LT1 | Same Zener voltage range (58–66 V), but not AEC-Q101 qualified; 225 mW rating unchanged | Lacks automotive qualification; suitable for commercial-grade consumer products only | Select when cost sensitivity outweighs automotive compliance requirements |
| SZBZX84C62LT1G | Identical electrical specs and AEC-Q101 qualification; Pb-free packaging confirmed per J-STD-020 | Direct drop-in replacement with enhanced environmental compliance | Preferred for new designs targeting RoHS and ELV directive conformance |
Compared with SZBZX84C62LT1, BZX84C62LT1 lacks automotive qualification and traceability, while SZBZX84C62LT1G adds Pb-free compliance without sacrificing performance - making it the optimal upgrade path for production programs requiring both reliability and regulatory alignment.
Availability
SZBZX84C62LT1 is available at Aetrix Electronics and suitable for portable power management, automotive sensor biasing, industrial PLC input protection, and consumer audio DC-DC feedback applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SZBZX84C62LT1 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 focused on energy-efficient electronics, delivering silicon solutions for automotive, industrial, cloud, and IoT markets.
SZBZX84C62LT1 belongs to the BZX84CxxxLT1 family of Zener regulators designed specifically for high-density, low-power voltage reference and transient suppression in automotive and portable electronics.
FAQ
What is the Zener voltage tolerance of SZBZX84C62LT1?
The SZBZX84C62LT1 has a nominal Zener voltage of 62 V with a tolerance of ±5%, meaning its actual breakdown voltage falls between 58 V and 66 V when tested at 5 mA (IZT1) and 25°C ambient. This tolerance is defined per the BZX84C series standard and applies directly to the SZBZX84C62LT1 variant as confirmed in Table 3 of the official datasheet.
Is SZBZX84C62LT1 AEC-Q101 qualified?
Yes, SZBZX84C62LT1 is explicitly AEC-Q101 qualified and PPAP capable, as stated in the "Features" section of the datasheet. This qualification validates its reliability for automotive applications including engine control units, body electronics, and ADAS subsystems where extended temperature operation and long-term stability are required.
What is the thermal resistance (RJA) of SZBZX84C62LT1 on FR-5 board?
The junction-to-ambient thermal resistance (RJA) of SZBZX84C62LT1 is 556 °C/W when mounted on an FR-5 board, as specified in the "Maximum Ratings" table. This value assumes standard 1.0 × 0.75 × 0.62 inch board dimensions and is critical for calculating maximum allowable power dissipation at elevated ambient temperatures.
Does SZBZX84C62LT1 have a functional pin 2?
No, pin 2 of SZBZX84C62LT1 is internally unconnected (NC) and serves no electrical function. The device operates as a two-terminal Zener diode using only pin 1 (anode) and pin 3 (cathode), with polarity identified by the cathode band adjacent to pin 3 - confirmed in the "Marking Diagram" and "Electrical Characteristics" sections of the datasheet.
What is the maximum reverse leakage current for SZBZX84C62LT1?
The maximum reverse leakage current for SZBZX84C62LT1 is 0.05 µA, measured at a reverse voltage (VR) of 43.4 V - which corresponds to 70% of its nominal Zener voltage. This parameter is specified in the "Electrical Characteristics" table and reflects the device's ability to maintain low standby current in high-impedance bias networks.
SZBZX84C62LT1 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):
- 62 V
- Tolerance:
- ±6%
- Power - Max:
- 225 mW
- Impedance (Max) (Zzt):
- 215 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 43.4 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)
SZBZX84C62LT1 FAQ
1.How can I place an order for SZBZX84C62LT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SZBZX84C62LT1 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 SZBZX84C62LT1 reliable?
The price and inventory of SZBZX84C62LT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZBZX84C62LT1 is usually 5 days.
3.What payment methods are accepted for SZBZX84C62LT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZBZX84C62LT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZBZX84C62LT1?
SZBZX84C62LT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZBZX84C62LT1 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 SZBZX84C62LT1?
For technical support, including SZBZX84C62LT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZBZX84C62LT1 requirements.
6.How does Aetrix verify that SZBZX84C62LT1 is sourced from the original manufacturer or authorized distributors?
All SZBZX84C62LT1 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 SZBZX84C62LT1 meets industry standards.
7.What is the process for return or replacement of SZBZX84C62LT1?
All SZBZX84C62LT1 units undergo pre-shipment inspection (PSI). If there is an issue with SZBZX84C62LT1, 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 SZBZX84C62LT1 part is unused and in its original packaging.
Return procedure for SZBZX84C62LT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZBZX84C62LT1 Tags
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