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onsemi SZBZX84C16LT3G
- Part No.:
- SZBZX84C16LT3G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SZBZX84C16LT3G.pdf
- Description:
- DIODE ZENER 16V 250MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:24,600
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Product details
Overview
SZBZX84C16LT3G from onsemi is a 16 V ±5.6% Zener diode in SOT-23 package, rated for 250 mW power dissipation at 25°C, with 40 Ω dynamic impedance at 5 mA test current and 11.2 mV/°C temperature coefficient - used for precision voltage reference and overvoltage protection in portable power rails.
For engineers reviewing the SZBZX84C16LT3G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±5.6%), thermal coefficient (11.2 mV/°C), low leakage (50 nA @ 12.8 V), ESD robustness (>16 kV HBM), and automotive-grade AEC-Q101 qualification.
Technical Context
This device operates as a two-terminal voltage reference using avalanche breakdown in silicon PN junction. It delivers stable 16 V regulation across −65°C to +150°C junction temperature range with tight thermal coefficient control and minimal capacitance (105 pF @ 0 V, 1 MHz).
Designed for surface-mount high-density PCBs, it features a no-connection terminal (Pin 2) and polarity band indicating cathode (Pin 3). Its 250 mW FR-4 rating supports compact battery-powered designs where space and thermal margin are constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15.3 V min / 16.0 V nom / 17.1 V max @ 5 mA - defines regulated output voltage window under standard test conditions |
| Dynamic Impedance (ZZT) | 40 Ω max @ 5 mA - determines voltage deviation under load transients; lower value improves regulation stability |
| Reverse Leakage Current (IR) | 50 nA max @ 12.8 V - ensures minimal quiescent current draw in standby mode of low-power systems |
| Temperature Coefficient (TC) | +11.2 mV/°C @ 5 mA - quantifies voltage drift per degree; enables accurate thermal compensation in reference circuits |
| Capacitance (C) | 105 pF @ 0 V, 1 MHz - impacts high-frequency noise filtering capability and signal integrity in RF-adjacent applications |
| ESD Rating | Class 3 (>16 kV) HBM - guarantees robustness against handling-induced electrostatic discharge during assembly |
| Power Dissipation | 250 mW on FR-5 board @ 25°C - sets maximum continuous power handling before thermal derating begins |
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 | Forward-biased terminal; connects to lower-potential node in reverse-bias regulation configuration |
| 2 | No Connection | Internally unconnected; must remain floating - not tied to ground or any net |
| 3 | Cathode | Reverse-biased terminal; connects to higher-potential node and carries regulated output current |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Qualified | Validated for automotive applications including engine control modules and ADAS power supervision |
| Pb-Free & RoHS Compliant | Meets global environmental compliance requirements for industrial and consumer electronics manufacturing |
| Tight Thermal Coefficient | +11.2 mV/°C enables predictable voltage drift behavior in temperature-varying environments |
| Low Capacitance | 105 pF allows integration into high-speed signal paths without significant loading or bandwidth degradation |
| High ESD Robustness | Class 3 (>16 kV HBM) eliminates need for external ESD protection in handheld and portable designs |
Applications
| Portable Power Supervision | Automotive Sensor Reference |
|---|---|
Use Scenario: Monitoring Li-ion battery pack voltage in Bluetooth earbuds or smartwatches to prevent overcharge. IC Role / Device Role / Timing Role: Zener reference element providing stable 16 V threshold for comparator-based cutoff logic. Use Value: Enables accurate 1% voltage detection margin with minimal board area and zero external passive components. |
Use Scenario: Supplying stable bias voltage to analog front-end of tire pressure monitoring system (TPMS) sensor. IC Role / Device Role / Timing Role: Precision voltage reference for ADC reference rail in harsh-temperature automotive environments. Use Value: Maintains <±1.5% regulation error across −40°C to +125°C due to AEC-Q101 validation and known TC behavior. |
| USB-C PD Protection Clamp | Industrial PLC Input Conditioning |
Use Scenario: Clamping transient surges on USB-C VBUS line during hot-plug events in docking stations. IC Role / Device Role / Timing Role: Fast-response overvoltage clamp limiting VBUS to ≤17.1 V during ESD or load-dump events. Use Value: Absorbs 250 mW peak energy without latch-up, eliminating need for TVS diodes in cost-sensitive designs. |
Use Scenario: Level-shifting and voltage limiting for 24 V digital input channels in programmable logic controllers. IC Role / Device Role / Timing Role: Input protection element shunting excess voltage above 16 V to ground before reaching MCU GPIO. Use Value: Reduces input conditioning BOM count by replacing resistor-Zener networks with single SOT-23 device. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84C16LT3G | Standard-tolerance (±5.6%) Zener; same SOT-23 package, non-automotive grade | Lacks AEC-Q101 qualification and tighter process controls; suitable for commercial-grade products only | Select when automotive qualification is unnecessary and cost sensitivity outweighs reliability requirements |
| SZBZX84C15LT3G | 15 V nominal Zener (13.8–15.6 V range); identical package, AEC-Q101 qualified | Lower clamping threshold better suited for 12 V system rails or tighter regulation bands | Choose when design requires 15 V reference with same automotive compliance and thermal performance |
Compared with SZBZX84C16LT3G, BZX84C16LT3G offers identical electrical specs but lacks automotive qualification, while SZBZX84C15LT3G provides lower voltage regulation with matching AEC-Q101 reliability - enabling trade-offs between voltage level, qualification scope, and supply chain assurance.
Availability
SZBZX84C16LT3G is available at Aetrix Electronics and suitable for portable power supervision, automotive sensor reference, USB-C PD protection clamp, and industrial PLC input conditioning requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SZBZX84C16LT3G 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 power management, analog, sensors, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.
SZBZX84C16LT3G belongs to the SZBZX84CxxxLTxG automotive Zener regulator family, engineered for reliable voltage reference and overvoltage protection in safety-critical and thermally demanding environments.
FAQ
What is the Zener voltage tolerance of SZBZX84C16LT3G?
The SZBZX84C16LT3G has a Zener voltage tolerance of ±5.6% around its nominal 16 V rating, specified as 15.3 V minimum and 17.1 V maximum at 5 mA test current. This tolerance reflects the standard C-series variation and is validated across −65°C to +150°C operating temperature range. The SZBZX84C16LT3G datasheet confirms this range under Electrical Characteristics Table on page 3.
Is SZBZX84C16LT3G qualified for automotive applications?
Yes, SZBZX84C16LT3G is AEC-Q101 qualified and PPAP capable, as explicitly stated in the "Features" section of the onsemi datasheet. The "SZ" prefix denotes automotive and other applications requiring unique site and control change requirements. This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and ESD - making SZBZX84C16LT3G suitable for engine control units, body electronics, and ADAS subsystems.
What is the pin configuration and polarity marking for SZBZX84C16LT3G?
SZBZX84C16LT3G uses SOT-23 package with Pin 1 = Anode, Pin 2 = No Connection, Pin 3 = Cathode. Polarity is indicated by a visible band on the package body adjacent to Pin 3. This configuration is confirmed in the "Marking Diagram" and "Mechanical Characteristics" sections of the datasheet, and applies identically across all BZX84Cxxx and SZBZX84Cxxx variants in SOT-23.
How does the temperature coefficient affect SZBZX84C16LT3G performance?
The SZBZX84C16LT3G exhibits a positive temperature coefficient of +11.2 mV/°C at 5 mA, meaning its Zener voltage increases linearly with junction temperature. This behavior is documented in the Electrical Characteristics table and Typical Characteristics Figure 1. Designers use this value to predict voltage drift in thermal environments - for example, a +50°C rise causes ~560 mV increase, critical for precision reference circuits where absolute accuracy matters.
What packaging and reel options are available for SZBZX84C16LT3G?
SZBZX84C16LT3G is supplied in Pb-free SOT-23 tape-and-reel format with 10,000 units per reel, as specified in the Ordering Information table on page 1 of the datasheet. The "LT3G" suffix explicitly denotes this packaging variant. Reel orientation, tape width, and pocket dimensions conform to onsemi's Tape and Reel Packaging Specification Brochure BRD8011/D, ensuring compatibility with standard pick-and-place equipment.
SZBZX84C16LT3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 16 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 11.2 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)
SZBZX84C16LT3G FAQ
1.How can I place an order for SZBZX84C16LT3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZBZX84C16LT3G 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 SZBZX84C16LT3G reliable?
The price and inventory of SZBZX84C16LT3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZBZX84C16LT3G is usually 5 days.
3.What payment methods are accepted for SZBZX84C16LT3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZBZX84C16LT3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZBZX84C16LT3G?
SZBZX84C16LT3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZBZX84C16LT3G 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 SZBZX84C16LT3G?
For technical support, including SZBZX84C16LT3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZBZX84C16LT3G requirements.
6.How does Aetrix verify that SZBZX84C16LT3G is sourced from the original manufacturer or authorized distributors?
All SZBZX84C16LT3G 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 SZBZX84C16LT3G meets industry standards.
7.What is the process for return or replacement of SZBZX84C16LT3G?
All SZBZX84C16LT3G units undergo pre-shipment inspection (PSI). If there is an issue with SZBZX84C16LT3G, 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 SZBZX84C16LT3G part is unused and in its original packaging.
Return procedure for SZBZX84C16LT3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZBZX84C16LT3G Tags
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