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onsemi SZBZX84B15LT1G
- Part No.:
- SZBZX84B15LT1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SZBZX84B15LT1G.pdf
- Description:
- DIODE ZENER 15V 250MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:13,843
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Product details
Overview
SZBZX84B15LT1G from onsemi is a 15 V ±2% tight-tolerance Zener diode in SOT-23 package, rated for 250 mW power dissipation on FR-5 board, with 30 Ω dynamic impedance at 5 mA test current and 0.05 µA reverse leakage at 10.5 V. It provides precision voltage regulation in space-constrained power rail clamping and reference applications.
For engineers reviewing the SZBZX84B15LT1G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±2%), thermal coefficient (+9.2 mV/°C), ESD rating (>16 kV HBM), and automotive-grade AEC-Q101 qualification.
Technical Context
This device operates as a two-terminal voltage reference using controlled reverse-biased avalanche breakdown. Its 15 V nominal Zener voltage is specified at 5 mA test current with ±2% tolerance, and exhibits a positive temperature coefficient of +9.2 mV/°C over −65°C to +150°C junction range.
The SOT-23 package features anode (Pin 1), no-connection (Pin 2), and cathode (Pin 3) terminal configuration. It delivers 250 mW power handling on FR-5 board with 500 °C/W thermal resistance and supports automated surface-mount assembly per JEDEC standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 15.0 V ±2% (14.7–15.3 V) at 5 mA - enables precise 15 V rail clamping or reference generation |
| Power Dissipation | 250 mW on FR-5 board - supports compact low-power regulation without heatsinking |
| Zener Impedance | 30 Ω max at 5 mA - ensures stable output under varying load currents |
| Reverse Leakage | 0.05 µA max at 10.5 V - minimizes standby current in battery-powered systems |
| Temperature Coefficient | +9.2 mV/°C - quantifies voltage drift across operating temperature range |
| Capacitance | 110 pF at 0 V, 1 MHz - impacts high-frequency noise filtering capability |
| ESD Rating | Class 3 (>16 kV HBM) - withstands robust handling in manufacturing and field environments |
Pinout & Package
SOT-23 (TO-236) plastic surface-mount package, 2.90 × 1.30 × 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 |
|---|---|---|
| 1 | Anode | Connected to lower-potential side of regulated node; reverse-biased during Zener operation |
| 2 | No Connection | Internally unconnected; must remain floating - not usable as thermal pad or ground |
| 3 | Cathode | Connected to higher-potential side; polarity band identifies this terminal for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| Tight Zener voltage tolerance | ±2% (14.7–15.3 V) - reduces need for post-production calibration in reference circuits |
| AEC-Q101 qualification | Automotive-grade reliability with PPAP capability - suitable for under-hood and ADAS power management |
| Pb-free and RoHS compliant | Meets global environmental regulations and lead-free reflow soldering requirements (260°C/10 s) |
| High ESD immunity | Class 3 Human Body Model (>16 kV) - protects against electrostatic damage during handling and assembly |
| Optimized SMT package | SOT-23 footprint - enables high-density layout on portable and IoT PCBs with automated placement compatibility |
Applications
| USB Power Rail Protection | Automotive Sensor Reference |
|---|---|
Use Scenario: Clamping 5 V USB VBUS line against transient overvoltage events in portable accessories. IC Role / Device Role / Timing Role: Two-terminal shunt regulator absorbing surge energy above 15 V threshold. Use Value: Prevents downstream USB controller damage while maintaining <0.05 µA leakage to preserve battery life. |
Use Scenario: Providing stable 15 V reference for analog front-end circuitry in engine control sensors. IC Role / Device Role / Timing Role: Precision voltage reference source with AEC-Q101 qualification for harsh-temperature environments. Use Value: Enables ±2% reference accuracy across −40°C to +125°C ambient, supporting ISO 26262 functional safety compliance. |
| Industrial PLC I/O Module | Medical Wearable Battery Monitor |
Use Scenario: Regulating auxiliary 15 V supply for isolated digital I/O drivers in programmable logic controllers. IC Role / Device Role / Timing Role: Low-power Zener clamp stabilizing local bias rail under variable load conditions. Use Value: Delivers 250 mW dissipation capability in 2.9 mm × 1.3 mm footprint, enabling compact modular design. |
Use Scenario: Monitoring lithium-ion cell stack voltage via resistive divider with buffered reference. IC Role / Device Role / Timing Role: Low-leakage voltage reference minimizing quiescent current in always-on monitoring circuit. Use Value: 0.05 µA max reverse leakage at 10.5 V extends wearable runtime between charges without sacrificing accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84B15LT1G | Same electrical specs but non-automotive grade; lacks AEC-Q101 qualification and PPAP support | Acceptable for commercial-grade consumer electronics where automotive reliability is not required | Select when cost sensitivity outweighs need for automotive qualification and traceability |
| SZBZX84B15LT3G | Identical electrical and mechanical specs; differs only in tape-and-reel packaging (10,000 pcs vs. 3,000 pcs) | Preferred for high-volume production runs requiring reduced changeover frequency on SMT lines | Select when procurement volume exceeds 3,000 units and reel size optimization improves line efficiency |
Compared with BZX84B15LT1G, SZBZX84B15LT1G adds AEC-Q101 qualification and PPAP capability for automotive use, while SZBZX84B15LT3G offers identical performance in larger tape-and-reel format-enabling optimized logistics for volume manufacturing without electrical trade-offs.
Availability
SZBZX84B15LT1G is available at Aetrix Electronics and suitable for USB power protection, automotive sensor reference, industrial PLC I/O modules, and medical wearable battery monitoring requiring stable component supply across extended temperature ranges and automotive qualification.
Supply support for SZBZX84B15LT1G 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 is a global semiconductor manufacturer specializing in energy-efficient silicon solutions for automotive, industrial, cloud, and IoT applications.
SZBZX84B15LT1G belongs to the SZBZX84BxxxLT1G series of AEC-Q101-qualified Zener diodes designed for precision voltage regulation in automotive and high-reliability industrial systems.
FAQ
What is the Zener voltage tolerance of SZBZX84B15LT1G?
The SZBZX84B15LT1G has a tight Zener voltage tolerance of ±2%, specifying a nominal 15.0 V breakdown voltage ranging from 14.7 V to 15.3 V at 5 mA test current. This tighter tolerance compared to standard BZX84C-series devices makes SZBZX84B15LT1G suitable for applications demanding higher reference accuracy without external trimming.
Is SZBZX84B15LT1G qualified for automotive applications?
Yes, SZBZX84B15LT1G is AEC-Q101 qualified and PPAP capable, meeting automotive reliability requirements for use in engine control units, body electronics, and ADAS subsystems. The "SZ" prefix explicitly denotes automotive-grade process controls, site-specific change management, and enhanced traceability beyond commercial-grade BZX84B15LT1G.
What is the pin configuration of SZBZX84B15LT1G?
SZBZX84B15LT1G uses the SOT-23 package with Pin 1 = Anode, Pin 2 = No Connection (internally unconnected), and Pin 3 = Cathode. The cathode is marked by a polarity band on the package body. Pin 2 must remain unconnected on the PCB to avoid unintended parasitic paths or thermal stress.
What is the maximum power dissipation of SZBZX84B15LT1G?
SZBZX84B15LT1G is rated for 250 mW total power dissipation on FR-5 board at 25°C ambient, derating linearly by 2.0 mW/°C above that temperature. On alumina substrate, it supports up to 300 mW at 25°C. These ratings define safe continuous operating limits for thermal design in compact PCB layouts.
Does SZBZX84B15LT1G support lead-free soldering processes?
Yes, SZBZX84B15LT1G is Pb-free and RoHS compliant, qualified for lead-free reflow soldering with a maximum case temperature of 260°C for 10 seconds. Its thermosetting plastic case and corrosion-resistant finish ensure reliable wetting and joint integrity under JEDEC J-STD-020 moisture sensitivity level 1 conditions.
SZBZX84B15LT1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- SZBZX84BxxxLT1G
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 15 V
- Tolerance:
- ±2%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 10.5 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)
SZBZX84B15LT1G FAQ
1.How can I place an order for SZBZX84B15LT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZBZX84B15LT1G 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 SZBZX84B15LT1G reliable?
The price and inventory of SZBZX84B15LT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZBZX84B15LT1G is usually 5 days.
3.What payment methods are accepted for SZBZX84B15LT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZBZX84B15LT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZBZX84B15LT1G?
SZBZX84B15LT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZBZX84B15LT1G 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 SZBZX84B15LT1G?
For technical support, including SZBZX84B15LT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZBZX84B15LT1G requirements.
6.How does Aetrix verify that SZBZX84B15LT1G is sourced from the original manufacturer or authorized distributors?
All SZBZX84B15LT1G 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 SZBZX84B15LT1G meets industry standards.
7.What is the process for return or replacement of SZBZX84B15LT1G?
All SZBZX84B15LT1G units undergo pre-shipment inspection (PSI). If there is an issue with SZBZX84B15LT1G, 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 SZBZX84B15LT1G part is unused and in its original packaging.
Return procedure for SZBZX84B15LT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZBZX84B15LT1G Tags
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